cmd/irdump: formatted disassembly

.gitea/workflows/test.yml

@@ -89,6 +89,23 @@ jobs:
           path: result/*
           retention-days: 1
 
+  hpkg:
+    name: Hpkg
+    runs-on: nix
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Run NixOS test
+        run: nix build --out-link "result" --print-out-paths --print-build-logs .#checks.x86_64-linux.hpkg
+
+      - name: Upload test output
+        uses: actions/upload-artifact@v3
+        with:
+          name: "hpkg-vm-output"
+          path: result/*
+          retention-days: 1
+
   check:
     name: Flake checks
     needs:
@@ -97,6 +114,7 @@ jobs:
       - sandbox
       - sandbox-race
       - sharefs
+      - hpkg
     runs-on: nix
     steps:
       - name: Checkout

.github/workflows/README

@@ -0,0 +1,5 @@
+DO NOT ADD NEW ACTIONS HERE
+
+This port is solely for releasing to the github mirror and serves no purpose during development.
+All development happens at https://git.gensokyo.uk/security/hakurei. If you wish to contribute,
+request for an account on git.gensokyo.uk.

.github/workflows/release.yml

@@ -0,0 +1,46 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    name: Create release
+    runs-on: ubuntu-latest
+
+    permissions:
+      packages: write
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: nixbuild/nix-quick-install-action@v32
+        with:
+          nix_conf: |
+            keep-env-derivations = true
+            keep-outputs = true
+
+      - name: Restore and cache Nix store
+        uses: nix-community/cache-nix-action@v6
+        with:
+          primary-key: build-${{ runner.os }}-${{ hashFiles('**/*.nix') }}
+          restore-prefixes-first-match: build-${{ runner.os }}-
+          gc-max-store-size-linux: 1G
+          purge: true
+          purge-prefixes: build-${{ runner.os }}-
+          purge-created: 60
+          purge-primary-key: never
+
+      - name: Build for release
+        run: nix build --print-out-paths --print-build-logs .#dist
+
+      - name: Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |-
+            result/hakurei-**

.github/workflows/test.yml

@@ -0,0 +1,48 @@
+name: Test
+
+on:
+  - push
+
+jobs:
+  dist:
+    name: Create distribution
+    runs-on: ubuntu-latest
+    permissions:
+      actions: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: nixbuild/nix-quick-install-action@v32
+        with:
+          nix_conf: |
+            keep-env-derivations = true
+            keep-outputs = true
+
+      - name: Restore and cache Nix store
+        uses: nix-community/cache-nix-action@v6
+        with:
+          primary-key: build-${{ runner.os }}-${{ hashFiles('**/*.nix') }}
+          restore-prefixes-first-match: build-${{ runner.os }}-
+          gc-max-store-size-linux: 1G
+          purge: true
+          purge-prefixes: build-${{ runner.os }}-
+          purge-created: 60
+          purge-primary-key: never
+
+      - name: Build for test
+        id: build-test
+        run: >-
+          export HAKUREI_REV="$(git rev-parse --short HEAD)" &&
+          sed -i.old 's/version = /version = "0.0.0-'$HAKUREI_REV'"; # version = /' package.nix &&
+          nix build --print-out-paths --print-build-logs .#dist &&
+          mv package.nix.old package.nix &&
+          echo "rev=$HAKUREI_REV" >> $GITHUB_OUTPUT
+
+      - name: Upload test build
+        uses: actions/upload-artifact@v4
+        with:
+          name: "hakurei-${{ steps.build-test.outputs.rev }}"
+          path: result/*
+          retention-days: 1

.gitignore

@@ -28,7 +28,6 @@ go.work.sum
 # go generate
 /cmd/hakurei/LICENSE
 /internal/pkg/testdata/testtool
-/internal/rosa/hakurei_current.tar.gz
 
 # release
 /dist/hakurei-*

README.md

@@ -15,51 +15,164 @@
   <a href="https://hakurei.app"><img src="https://img.shields.io/website?url=https%3A%2F%2Fhakurei.app" alt="Website" /></a>
 </p>
 
-Hakurei is a tool for running sandboxed desktop applications as dedicated
+Hakurei is a tool for running sandboxed graphical applications as dedicated subordinate users on the Linux kernel.
-subordinate users on the Linux kernel. It implements the application container
+It implements the application container of [planterette (WIP)](https://git.gensokyo.uk/security/planterette),
-of [planterette (WIP)](https://git.gensokyo.uk/security/planterette), a
+a self-contained Android-like package manager with modern security features.
-self-contained Android-like package manager with modern security features.
 
-Interaction with hakurei happens entirely through structures described by
+## NixOS Module usage
-package [hst](https://pkg.go.dev/hakurei.app/hst). No native API is available
-due to internal details of uid isolation.
 
-## Notable Packages
+The NixOS module currently requires home-manager to configure subordinate users. Full module documentation can be found [here](options.md).
 
-Package [container](https://pkg.go.dev/hakurei.app/container) is general purpose
+To use the module, import it into your configuration with
-container tooling. It is used by the hakurei shim process running as the target
-subordinate user to set up the application container. It has a single dependency,
-[libseccomp](https://github.com/seccomp/libseccomp), to create BPF programs
-for the [system call filter](https://www.kernel.org/doc/html/latest/userspace-api/seccomp_filter.html).
 
-Package [internal/pkg](https://pkg.go.dev/hakurei.app/internal/pkg) provides
+```nix
-infrastructure for hermetic builds. This replaces the legacy nix-based testing
+{
-framework and serves as the build system of Rosa OS, currently developed under
+  inputs = {
-package [internal/rosa](https://pkg.go.dev/hakurei.app/internal/rosa).
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
 
-## Dependencies
+    hakurei = {
+      url = "git+https://git.gensokyo.uk/security/hakurei";
 
-`container` depends on:
+      # Optional but recommended to limit the size of your system closure.
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
 
-- [libseccomp](https://github.com/seccomp/libseccomp) to generate BPF programs.
+  outputs = { self, nixpkgs, hakurei, ... }:
+  {
+    nixosConfigurations.hakurei = nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+      modules = [
+        hakurei.nixosModules.hakurei
+      ];
+    };
+  };
+}
+```
 
-`cmd/hakurei` depends on:
+This adds the `environment.hakurei` option:
 
-- [acl](https://savannah.nongnu.org/projects/acl/) to export sockets to
+```nix
-  subordinate users.
+{ pkgs, ... }:
-- [wayland](https://gitlab.freedesktop.org/wayland/wayland) to set up
-  [security-context-v1](https://wayland.app/protocols/security-context-v1).
-- [xcb](https://xcb.freedesktop.org/) to grant and revoke subordinate users
-  access to the X server.
 
-`cmd/sharefs` depends on:
+{
+  environment.hakurei = {
+    enable = true;
+    stateDir = "/var/lib/hakurei";
+    users = {
+      alice = 0;
+      nixos = 10;
+    };
 
-- [fuse](https://github.com/libfuse/libfuse) to implement the filesystem.
+    commonPaths = [
+      {
+        src = "/sdcard";
+        write = true;
+      }
+    ];
 
-New dependencies will generally not be added. Patches adding new dependencies
+    extraHomeConfig = {
-are very likely to be rejected.
+      home.stateVersion = "23.05";
+    };
 
-## NixOS Module (deprecated)
+    apps = {
+      "org.chromium.Chromium" = {
+        name = "chromium";
+        identity = 1;
+        packages = [ pkgs.chromium ];
+        userns = true;
+        mapRealUid = true;
+        dbus = {
+          system = {
+            filter = true;
+            talk = [
+              "org.bluez"
+              "org.freedesktop.Avahi"
+              "org.freedesktop.UPower"
+            ];
+          };
+          session =
+            f:
+            f {
+              talk = [
+                "org.freedesktop.FileManager1"
+                "org.freedesktop.Notifications"
+                "org.freedesktop.ScreenSaver"
+                "org.freedesktop.secrets"
+                "org.kde.kwalletd5"
+                "org.kde.kwalletd6"
+              ];
+              own = [
+                "org.chromium.Chromium.*"
+                "org.mpris.MediaPlayer2.org.chromium.Chromium.*"
+                "org.mpris.MediaPlayer2.chromium.*"
+              ];
+              call = { };
+              broadcast = { };
+            };
+        };
+      };
 
-The NixOS module is in maintenance mode and will be removed once planterette is
+      "org.claws_mail.Claws-Mail" = {
-feature-complete. Full module documentation can be found [here](options.md).
+        name = "claws-mail";
+        identity = 2;
+        packages = [ pkgs.claws-mail ];
+        gpu = false;
+        capability.pulse = false;
+      };
+
+      "org.weechat" = {
+        name = "weechat";
+        identity = 3;
+        shareUid = true;
+        packages = [ pkgs.weechat ];
+        capability = {
+          wayland = false;
+          x11 = false;
+          dbus = true;
+          pulse = false;
+        };
+      };
+
+      "dev.vencord.Vesktop" = {
+        name = "discord";
+        identity = 3;
+        shareUid = true;
+        packages = [ pkgs.vesktop ];
+        share = pkgs.vesktop;
+        command = "vesktop --ozone-platform-hint=wayland";
+        userns = true;
+        mapRealUid = true;
+        capability.x11 = true;
+        dbus = {
+          session =
+            f:
+            f {
+              talk = [ "org.kde.StatusNotifierWatcher" ];
+              own = [ ];
+              call = { };
+              broadcast = { };
+            };
+          system.filter = true;
+        };
+      };
+
+      "io.looking-glass" = {
+        name = "looking-glass-client";
+        identity = 4;
+        useCommonPaths = false;
+        groups = [ "plugdev" ];
+        extraPaths = [
+          {
+            src = "/dev/shm/looking-glass";
+            write = true;
+          }
+        ];
+        extraConfig = {
+          programs.looking-glass-client.enable = true;
+        };
+      };
+    };
+  };
+}
+```

cmd/earlyinit/main.go

@@ -1,58 +0,0 @@
-package main
-
-import (
-	"log"
-	"os"
-	"runtime"
-	. "syscall"
-)
-
-func main() {
-	runtime.LockOSThread()
-	log.SetFlags(0)
-	log.SetPrefix("earlyinit: ")
-
-	if err := Mount(
-		"devtmpfs",
-		"/dev/",
-		"devtmpfs",
-		MS_NOSUID|MS_NOEXEC,
-		"",
-	); err != nil {
-		log.Fatalf("cannot mount devtmpfs: %v", err)
-	}
-
-	// The kernel might be unable to set up the console. When that happens,
-	// printk is called with "Warning: unable to open an initial console."
-	// and the init runs with no files. The checkfds runtime function
-	// populates 0-2 by opening /dev/null for them.
-	//
-	// This check replaces 1 and 2 with /dev/kmsg to improve the chance
-	// of output being visible to the user.
-	if fi, err := os.Stdout.Stat(); err == nil {
-		if stat, ok := fi.Sys().(*Stat_t); ok {
-			if stat.Rdev == 0x103 {
-				var fd int
-				if fd, err = Open(
-					"/dev/kmsg",
-					O_WRONLY|O_CLOEXEC,
-					0,
-				); err != nil {
-					log.Fatalf("cannot open kmsg: %v", err)
-				}
-
-				if err = Dup3(fd, Stdout, 0); err != nil {
-					log.Fatalf("cannot open stdout: %v", err)
-				}
-				if err = Dup3(fd, Stderr, 0); err != nil {
-					log.Fatalf("cannot open stderr: %v", err)
-				}
-
-				if err = Close(fd); err != nil {
-					log.Printf("cannot close kmsg: %v", err)
-				}
-			}
-		}
-	}
-
-}

cmd/hpkg/README

@@ -0,0 +1,7 @@
+This program is a proof of concept and is now deprecated. It is only kept
+around for API demonstration purposes and to make the most out of the test
+suite.
+
+This program is replaced by planterette, which can be found at
+https://git.gensokyo.uk/security/planterette. Development effort should be
+focused there instead.

cmd/hpkg/app.go

@@ -0,0 +1,173 @@
+package main
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+
+	"hakurei.app/container/check"
+	"hakurei.app/container/fhs"
+	"hakurei.app/hst"
+)
+
+type appInfo struct {
+	Name    string `json:"name"`
+	Version string `json:"version"`
+
+	// passed through to [hst.Config]
+	ID string `json:"id"`
+	// passed through to [hst.Config]
+	Identity int `json:"identity"`
+	// passed through to [hst.Config]
+	Groups []string `json:"groups,omitempty"`
+	// passed through to [hst.Config]
+	Devel bool `json:"devel,omitempty"`
+	// passed through to [hst.Config]
+	Userns bool `json:"userns,omitempty"`
+	// passed through to [hst.Config]
+	HostNet bool `json:"net,omitempty"`
+	// passed through to [hst.Config]
+	HostAbstract bool `json:"abstract,omitempty"`
+	// passed through to [hst.Config]
+	Device bool `json:"dev,omitempty"`
+	// passed through to [hst.Config]
+	Tty bool `json:"tty,omitempty"`
+	// passed through to [hst.Config]
+	MapRealUID bool `json:"map_real_uid,omitempty"`
+	// passed through to [hst.Config]
+	DirectWayland bool `json:"direct_wayland,omitempty"`
+	// passed through to [hst.Config]
+	SystemBus *hst.BusConfig `json:"system_bus,omitempty"`
+	// passed through to [hst.Config]
+	SessionBus *hst.BusConfig `json:"session_bus,omitempty"`
+	// passed through to [hst.Config]
+	Enablements *hst.Enablements `json:"enablements,omitempty"`
+
+	// passed through to [hst.Config]
+	Multiarch bool `json:"multiarch,omitempty"`
+	// passed through to [hst.Config]
+	Bluetooth bool `json:"bluetooth,omitempty"`
+
+	// allow gpu access within sandbox
+	GPU bool `json:"gpu"`
+	// store path to nixGL mesa wrappers
+	Mesa string `json:"mesa,omitempty"`
+	// store path to nixGL source
+	NixGL string `json:"nix_gl,omitempty"`
+	// store path to activate-and-exec script
+	Launcher *check.Absolute `json:"launcher"`
+	// store path to /run/current-system
+	CurrentSystem *check.Absolute `json:"current_system"`
+	// store path to home-manager activation package
+	ActivationPackage string `json:"activation_package"`
+}
+
+func (app *appInfo) toHst(pathSet *appPathSet, pathname *check.Absolute, argv []string, flagDropShell bool) *hst.Config {
+	config := &hst.Config{
+		ID: app.ID,
+
+		Enablements: app.Enablements,
+
+		SystemBus:     app.SystemBus,
+		SessionBus:    app.SessionBus,
+		DirectWayland: app.DirectWayland,
+
+		Identity: app.Identity,
+		Groups:   app.Groups,
+
+		Container: &hst.ContainerConfig{
+			Hostname: formatHostname(app.Name),
+			Filesystem: []hst.FilesystemConfigJSON{
+				{FilesystemConfig: &hst.FSBind{Target: fhs.AbsEtc, Source: pathSet.cacheDir.Append("etc"), Special: true}},
+				{FilesystemConfig: &hst.FSBind{Source: pathSet.nixPath.Append("store"), Target: pathNixStore}},
+				{FilesystemConfig: &hst.FSLink{Target: pathCurrentSystem, Linkname: app.CurrentSystem.String()}},
+				{FilesystemConfig: &hst.FSLink{Target: pathBin, Linkname: pathSwBin.String()}},
+				{FilesystemConfig: &hst.FSLink{Target: fhs.AbsUsrBin, Linkname: pathSwBin.String()}},
+				{FilesystemConfig: &hst.FSBind{Source: pathSet.metaPath, Target: hst.AbsPrivateTmp.Append("app")}},
+				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsEtc.Append("resolv.conf"), Optional: true}},
+				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("block"), Optional: true}},
+				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("bus"), Optional: true}},
+				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("class"), Optional: true}},
+				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("dev"), Optional: true}},
+				{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("devices"), Optional: true}},
+				{FilesystemConfig: &hst.FSBind{Target: pathDataData.Append(app.ID), Source: pathSet.homeDir, Write: true, Ensure: true}},
+			},
+
+			Username: "hakurei",
+			Shell:    pathShell,
+			Home:     pathDataData.Append(app.ID),
+
+			Path: pathname,
+			Args: argv,
+		},
+		ExtraPerms: []hst.ExtraPermConfig{
+			{Path: dataHome, Execute: true},
+			{Ensure: true, Path: pathSet.baseDir, Read: true, Write: true, Execute: true},
+		},
+	}
+
+	if app.Devel {
+		config.Container.Flags |= hst.FDevel
+	}
+	if app.Userns {
+		config.Container.Flags |= hst.FUserns
+	}
+	if app.HostNet {
+		config.Container.Flags |= hst.FHostNet
+	}
+	if app.HostAbstract {
+		config.Container.Flags |= hst.FHostAbstract
+	}
+	if app.Device {
+		config.Container.Flags |= hst.FDevice
+	}
+	if app.Tty || flagDropShell {
+		config.Container.Flags |= hst.FTty
+	}
+	if app.MapRealUID {
+		config.Container.Flags |= hst.FMapRealUID
+	}
+	if app.Multiarch {
+		config.Container.Flags |= hst.FMultiarch
+	}
+	config.Container.Flags |= hst.FShareRuntime | hst.FShareTmpdir
+	return config
+}
+
+func loadAppInfo(name string, beforeFail func()) *appInfo {
+	bundle := new(appInfo)
+	if f, err := os.Open(name); err != nil {
+		beforeFail()
+		log.Fatalf("cannot open bundle: %v", err)
+	} else if err = json.NewDecoder(f).Decode(&bundle); err != nil {
+		beforeFail()
+		log.Fatalf("cannot parse bundle metadata: %v", err)
+	} else if err = f.Close(); err != nil {
+		log.Printf("cannot close bundle metadata: %v", err)
+		// not fatal
+	}
+
+	if bundle.ID == "" {
+		beforeFail()
+		log.Fatal("application identifier must not be empty")
+	}
+	if bundle.Launcher == nil {
+		beforeFail()
+		log.Fatal("launcher must not be empty")
+	}
+	if bundle.CurrentSystem == nil {
+		beforeFail()
+		log.Fatal("current-system must not be empty")
+	}
+
+	return bundle
+}
+
+func formatHostname(name string) string {
+	if h, err := os.Hostname(); err != nil {
+		log.Printf("cannot get hostname: %v", err)
+		return "hakurei-" + name
+	} else {
+		return h + "-" + name
+	}
+}

cmd/hpkg/build.nix

@@ -0,0 +1,256 @@
+{
+  nixpkgsFor,
+  system,
+  nixpkgs,
+  home-manager,
+}:
+
+{
+  lib,
+  stdenv,
+  closureInfo,
+  writeScript,
+  runtimeShell,
+  writeText,
+  symlinkJoin,
+  vmTools,
+  runCommand,
+  fetchFromGitHub,
+
+  zstd,
+  nix,
+  sqlite,
+
+  name ? throw "name is required",
+  version ? throw "version is required",
+  pname ? "${name}-${version}",
+  modules ? [ ],
+  nixosModules ? [ ],
+  script ? ''
+    exec "$SHELL" "$@"
+  '',
+
+  id ? name,
+  identity ? throw "identity is required",
+  groups ? [ ],
+  userns ? false,
+  net ? true,
+  dev ? false,
+  no_new_session ? false,
+  map_real_uid ? false,
+  direct_wayland ? false,
+  system_bus ? null,
+  session_bus ? null,
+
+  allow_wayland ? true,
+  allow_x11 ? false,
+  allow_dbus ? true,
+  allow_audio ? true,
+  gpu ? allow_wayland || allow_x11,
+}:
+
+let
+  inherit (lib) optionals;
+
+  homeManagerConfiguration = home-manager.lib.homeManagerConfiguration {
+    pkgs = nixpkgsFor.${system};
+    modules = modules ++ [
+      {
+        home = {
+          username = "hakurei";
+          homeDirectory = "/data/data/${id}";
+          stateVersion = "22.11";
+        };
+      }
+    ];
+  };
+
+  launcher = writeScript "hakurei-${pname}" ''
+    #!${runtimeShell} -el
+    ${script}
+  '';
+
+  extraNixOSConfig =
+    { pkgs, ... }:
+    {
+      environment = {
+        etc.nixpkgs.source = nixpkgs.outPath;
+        systemPackages = [ pkgs.nix ];
+      };
+
+      imports = nixosModules;
+    };
+  nixos = nixpkgs.lib.nixosSystem {
+    inherit system;
+    modules = [
+      extraNixOSConfig
+      { nix.settings.experimental-features = [ "flakes" ]; }
+      { nix.settings.experimental-features = [ "nix-command" ]; }
+      { boot.isContainer = true; }
+      { system.stateVersion = "22.11"; }
+    ];
+  };
+
+  etc = vmTools.runInLinuxVM (
+    runCommand "etc" { } ''
+      mkdir -p /etc
+      ${nixos.config.system.build.etcActivationCommands}
+
+      # remove unused files
+      rm -rf /etc/sudoers
+
+      mkdir -p $out
+      tar -C /etc -cf "$out/etc.tar" .
+    ''
+  );
+
+  extendSessionDefault = id: ext: {
+    filter = true;
+
+    talk = [ "org.freedesktop.Notifications" ] ++ ext.talk;
+    own =
+      (optionals (id != null) [
+        "${id}.*"
+        "org.mpris.MediaPlayer2.${id}.*"
+      ])
+      ++ ext.own;
+
+    inherit (ext) call broadcast;
+  };
+
+  nixGL = fetchFromGitHub {
+    owner = "nix-community";
+    repo = "nixGL";
+    rev = "310f8e49a149e4c9ea52f1adf70cdc768ec53f8a";
+    hash = "sha256-lnzZQYG0+EXl/6NkGpyIz+FEOc/DSEG57AP1VsdeNrM=";
+  };
+
+  mesaWrappers =
+    let
+      isIntelX86Platform = system == "x86_64-linux";
+      nixGLPackages = import (nixGL + "/default.nix") {
+        pkgs = nixpkgs.legacyPackages.${system};
+        enable32bits = isIntelX86Platform;
+        enableIntelX86Extensions = isIntelX86Platform;
+      };
+    in
+    symlinkJoin {
+      name = "nixGL-mesa";
+      paths = with nixGLPackages; [
+        nixGLIntel
+        nixVulkanIntel
+      ];
+    };
+
+  info = builtins.toJSON {
+    inherit
+      name
+      version
+      id
+      identity
+      launcher
+      groups
+      userns
+      net
+      dev
+      no_new_session
+      map_real_uid
+      direct_wayland
+      system_bus
+      gpu
+      ;
+
+    session_bus =
+      if session_bus != null then
+        (session_bus (extendSessionDefault id))
+      else
+        (extendSessionDefault id {
+          talk = [ ];
+          own = [ ];
+          call = { };
+          broadcast = { };
+        });
+
+    enablements = {
+      wayland = allow_wayland;
+      x11 = allow_x11;
+      dbus = allow_dbus;
+      pipewire = allow_audio;
+    };
+
+    mesa = if gpu then mesaWrappers else null;
+    nix_gl = if gpu then nixGL else null;
+    current_system = nixos.config.system.build.toplevel;
+    activation_package = homeManagerConfiguration.activationPackage;
+  };
+in
+
+stdenv.mkDerivation {
+  name = "${pname}.pkg";
+  inherit version;
+  __structuredAttrs = true;
+
+  nativeBuildInputs = [
+    zstd
+    nix
+    sqlite
+  ];
+
+  buildCommand = ''
+    NIX_ROOT="$(mktemp -d)"
+    export USER="nobody"
+
+    # create bootstrap store
+    bootstrapClosureInfo="${
+      closureInfo {
+        rootPaths = [
+          nix
+          nixos.config.system.build.toplevel
+        ];
+      }
+    }"
+    echo "copying bootstrap store paths..."
+    mkdir -p "$NIX_ROOT/nix/store"
+    xargs -n 1 -a "$bootstrapClosureInfo/store-paths" cp -at "$NIX_ROOT/nix/store/"
+    NIX_REMOTE="local?root=$NIX_ROOT" nix-store --load-db < "$bootstrapClosureInfo/registration"
+    NIX_REMOTE="local?root=$NIX_ROOT" nix-store --optimise
+    sqlite3 "$NIX_ROOT/nix/var/nix/db/db.sqlite" "UPDATE ValidPaths SET registrationTime = ''${SOURCE_DATE_EPOCH}"
+    chmod -R +r "$NIX_ROOT/nix/var"
+
+    # create binary cache
+    closureInfo="${
+      closureInfo {
+        rootPaths = [
+          homeManagerConfiguration.activationPackage
+          launcher
+        ]
+        ++ optionals gpu [
+          mesaWrappers
+          nixGL
+        ];
+      }
+    }"
+    echo "copying application paths..."
+    TMP_STORE="$(mktemp -d)"
+    mkdir -p "$TMP_STORE/nix/store"
+    xargs -n 1 -a "$closureInfo/store-paths" cp -at "$TMP_STORE/nix/store/"
+    NIX_REMOTE="local?root=$TMP_STORE" nix-store --load-db < "$closureInfo/registration"
+    sqlite3 "$TMP_STORE/nix/var/nix/db/db.sqlite" "UPDATE ValidPaths SET registrationTime = ''${SOURCE_DATE_EPOCH}"
+    NIX_REMOTE="local?root=$TMP_STORE" nix --offline --extra-experimental-features nix-command \
+        --verbose --log-format raw-with-logs \
+        copy --all --no-check-sigs --to \
+        "file://$NIX_ROOT/res?compression=zstd&compression-level=19&parallel-compression=true"
+
+    # package /etc
+    mkdir -p "$NIX_ROOT/etc"
+    tar -C "$NIX_ROOT/etc" -xf "${etc}/etc.tar"
+
+    # write metadata
+    cp "${writeText "bundle.json" info}" "$NIX_ROOT/bundle.json"
+
+    # create an intermediate file to improve zstd performance
+    INTER="$(mktemp)"
+    tar -C "$NIX_ROOT" -cf "$INTER" .
+    zstd -T0 -19 -fo "$out" "$INTER"
+  '';
+}

cmd/hpkg/main.go

@@ -0,0 +1,335 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"log"
+	"os"
+	"os/signal"
+	"path"
+	"syscall"
+
+	"hakurei.app/command"
+	"hakurei.app/container/check"
+	"hakurei.app/container/fhs"
+	"hakurei.app/hst"
+	"hakurei.app/message"
+)
+
+var (
+	errSuccess = errors.New("success")
+)
+
+func main() {
+	log.SetPrefix("hpkg: ")
+	log.SetFlags(0)
+	msg := message.New(log.Default())
+
+	if err := os.Setenv("SHELL", pathShell.String()); err != nil {
+		log.Fatalf("cannot set $SHELL: %v", err)
+	}
+
+	if os.Geteuid() == 0 {
+		log.Fatal("this program must not run as root")
+	}
+
+	ctx, stop := signal.NotifyContext(context.Background(),
+		syscall.SIGINT, syscall.SIGTERM)
+	defer stop() // unreachable
+
+	var (
+		flagVerbose   bool
+		flagDropShell bool
+	)
+	c := command.New(os.Stderr, log.Printf, "hpkg", func([]string) error { msg.SwapVerbose(flagVerbose); return nil }).
+		Flag(&flagVerbose, "v", command.BoolFlag(false), "Print debug messages to the console").
+		Flag(&flagDropShell, "s", command.BoolFlag(false), "Drop to a shell in place of next hakurei action")
+
+	{
+		var (
+			flagDropShellActivate bool
+		)
+		c.NewCommand("install", "Install an application from its package", func(args []string) error {
+			if len(args) != 1 {
+				log.Println("invalid argument")
+				return syscall.EINVAL
+			}
+			pkgPath := args[0]
+			if !path.IsAbs(pkgPath) {
+				if dir, err := os.Getwd(); err != nil {
+					log.Printf("cannot get current directory: %v", err)
+					return err
+				} else {
+					pkgPath = path.Join(dir, pkgPath)
+				}
+			}
+
+			/*
+				Look up paths to programs started by hpkg.
+				This is done here to ease error handling as cleanup is not yet required.
+			*/
+
+			var (
+				_     = lookPath("zstd")
+				tar   = lookPath("tar")
+				chmod = lookPath("chmod")
+				rm    = lookPath("rm")
+			)
+
+			/*
+				Extract package and set up for cleanup.
+			*/
+
+			var workDir *check.Absolute
+			if p, err := os.MkdirTemp("", "hpkg.*"); err != nil {
+				log.Printf("cannot create temporary directory: %v", err)
+				return err
+			} else if workDir, err = check.NewAbs(p); err != nil {
+				log.Printf("invalid temporary directory: %v", err)
+				return err
+			}
+			cleanup := func() {
+				// should be faster than a native implementation
+				mustRun(msg, chmod, "-R", "+w", workDir.String())
+				mustRun(msg, rm, "-rf", workDir.String())
+			}
+			beforeRunFail.Store(&cleanup)
+
+			mustRun(msg, tar, "-C", workDir.String(), "-xf", pkgPath)
+
+			/*
+				Parse bundle and app metadata, do pre-install checks.
+			*/
+
+			bundle := loadAppInfo(path.Join(workDir.String(), "bundle.json"), cleanup)
+			pathSet := pathSetByApp(bundle.ID)
+
+			a := bundle
+			if s, err := os.Stat(pathSet.metaPath.String()); err != nil {
+				if !os.IsNotExist(err) {
+					cleanup()
+					log.Printf("cannot access %q: %v", pathSet.metaPath, err)
+					return err
+				}
+				// did not modify app, clean installation condition met later
+			} else if s.IsDir() {
+				cleanup()
+				log.Printf("metadata path %q is not a file", pathSet.metaPath)
+				return syscall.EBADMSG
+			} else {
+				a = loadAppInfo(pathSet.metaPath.String(), cleanup)
+				if a.ID != bundle.ID {
+					cleanup()
+					log.Printf("app %q claims to have identifier %q",
+						bundle.ID, a.ID)
+					return syscall.EBADE
+				}
+				// sec: should verify credentials
+			}
+
+			if a != bundle {
+				// do not try to re-install
+				if a.NixGL == bundle.NixGL &&
+					a.CurrentSystem == bundle.CurrentSystem &&
+					a.Launcher == bundle.Launcher &&
+					a.ActivationPackage == bundle.ActivationPackage {
+					cleanup()
+					log.Printf("package %q is identical to local application %q",
+						pkgPath, a.ID)
+					return errSuccess
+				}
+
+				// identity determines uid
+				if a.Identity != bundle.Identity {
+					cleanup()
+					log.Printf("package %q identity %d differs from installed %d",
+						pkgPath, bundle.Identity, a.Identity)
+					return syscall.EBADE
+				}
+
+				// sec: should compare version string
+				msg.Verbosef("installing application %q version %q over local %q",
+					bundle.ID, bundle.Version, a.Version)
+			} else {
+				msg.Verbosef("application %q clean installation", bundle.ID)
+				// sec: should install credentials
+			}
+
+			/*
+				Setup steps for files owned by the target user.
+			*/
+
+			withCacheDir(ctx, msg, "install", []string{
+				// export inner bundle path in the environment
+				"export BUNDLE=" + hst.PrivateTmp + "/bundle",
+				// replace inner /etc
+				"mkdir -p etc",
+				"chmod -R +w etc",
+				"rm -rf etc",
+				"cp -dRf $BUNDLE/etc etc",
+				// replace inner /nix
+				"mkdir -p nix",
+				"chmod -R +w nix",
+				"rm -rf nix",
+				"cp -dRf /nix nix",
+				// copy from binary cache
+				"nix copy --offline --no-check-sigs --all --from file://$BUNDLE/res --to $PWD",
+				// deduplicate nix store
+				"nix store --offline --store $PWD optimise",
+				// make cache directory world-readable for autoetc
+				"chmod 0755 .",
+			}, workDir, bundle, pathSet, flagDropShell, cleanup)
+
+			if bundle.GPU {
+				withCacheDir(ctx, msg, "mesa-wrappers", []string{
+					// link nixGL mesa wrappers
+					"mkdir -p nix/.nixGL",
+					"ln -s " + bundle.Mesa + "/bin/nixGLIntel nix/.nixGL/nixGL",
+					"ln -s " + bundle.Mesa + "/bin/nixVulkanIntel nix/.nixGL/nixVulkan",
+				}, workDir, bundle, pathSet, false, cleanup)
+			}
+
+			/*
+				Activate home-manager generation.
+			*/
+
+			withNixDaemon(ctx, msg, "activate", []string{
+				// clean up broken links
+				"mkdir -p .local/state/{nix,home-manager}",
+				"chmod -R +w .local/state/{nix,home-manager}",
+				"rm -rf .local/state/{nix,home-manager}",
+				// run activation script
+				bundle.ActivationPackage + "/activate",
+			}, false, func(config *hst.Config) *hst.Config { return config },
+				bundle, pathSet, flagDropShellActivate, cleanup)
+
+			/*
+				Installation complete. Write metadata to block re-installs or downgrades.
+			*/
+
+			// serialise metadata to ensure consistency
+			if f, err := os.OpenFile(pathSet.metaPath.String()+"~", os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644); err != nil {
+				cleanup()
+				log.Printf("cannot create metadata file: %v", err)
+				return err
+			} else if err = json.NewEncoder(f).Encode(bundle); err != nil {
+				cleanup()
+				log.Printf("cannot write metadata: %v", err)
+				return err
+			} else if err = f.Close(); err != nil {
+				log.Printf("cannot close metadata file: %v", err)
+				// not fatal
+			}
+
+			if err := os.Rename(pathSet.metaPath.String()+"~", pathSet.metaPath.String()); err != nil {
+				cleanup()
+				log.Printf("cannot rename metadata file: %v", err)
+				return err
+			}
+
+			cleanup()
+			return errSuccess
+		}).
+			Flag(&flagDropShellActivate, "s", command.BoolFlag(false), "Drop to a shell on activation")
+	}
+
+	{
+		var (
+			flagDropShellNixGL bool
+			flagAutoDrivers    bool
+		)
+		c.NewCommand("start", "Start an application", func(args []string) error {
+			if len(args) < 1 {
+				log.Println("invalid argument")
+				return syscall.EINVAL
+			}
+
+			/*
+				Parse app metadata.
+			*/
+
+			id := args[0]
+			pathSet := pathSetByApp(id)
+			a := loadAppInfo(pathSet.metaPath.String(), func() {})
+			if a.ID != id {
+				log.Printf("app %q claims to have identifier %q", id, a.ID)
+				return syscall.EBADE
+			}
+
+			/*
+				Prepare nixGL.
+			*/
+
+			if a.GPU && flagAutoDrivers {
+				withNixDaemon(ctx, msg, "nix-gl", []string{
+					"mkdir -p /nix/.nixGL/auto",
+					"rm -rf /nix/.nixGL/auto",
+					"export NIXPKGS_ALLOW_UNFREE=1",
+					"nix build --impure " +
+						"--out-link /nix/.nixGL/auto/opengl " +
+						"--override-input nixpkgs path:/etc/nixpkgs " +
+						"path:" + a.NixGL,
+					"nix build --impure " +
+						"--out-link /nix/.nixGL/auto/vulkan " +
+						"--override-input nixpkgs path:/etc/nixpkgs " +
+						"path:" + a.NixGL + "#nixVulkanNvidia",
+				}, true, func(config *hst.Config) *hst.Config {
+					config.Container.Filesystem = append(config.Container.Filesystem, []hst.FilesystemConfigJSON{
+						{FilesystemConfig: &hst.FSBind{Source: fhs.AbsEtc.Append("resolv.conf"), Optional: true}},
+						{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("block"), Optional: true}},
+						{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("bus"), Optional: true}},
+						{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("class"), Optional: true}},
+						{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("dev"), Optional: true}},
+						{FilesystemConfig: &hst.FSBind{Source: fhs.AbsSys.Append("devices"), Optional: true}},
+					}...)
+					appendGPUFilesystem(config)
+					return config
+				}, a, pathSet, flagDropShellNixGL, func() {})
+			}
+
+			/*
+				Create app configuration.
+			*/
+
+			pathname := a.Launcher
+			argv := make([]string, 1, len(args))
+			if flagDropShell {
+				pathname = pathShell
+				argv[0] = bash
+			} else {
+				argv[0] = a.Launcher.String()
+			}
+			argv = append(argv, args[1:]...)
+			config := a.toHst(pathSet, pathname, argv, flagDropShell)
+
+			/*
+				Expose GPU devices.
+			*/
+
+			if a.GPU {
+				config.Container.Filesystem = append(config.Container.Filesystem,
+					hst.FilesystemConfigJSON{FilesystemConfig: &hst.FSBind{Source: pathSet.nixPath.Append(".nixGL"), Target: hst.AbsPrivateTmp.Append("nixGL")}})
+				appendGPUFilesystem(config)
+			}
+
+			/*
+				Spawn app.
+			*/
+
+			mustRunApp(ctx, msg, config, func() {})
+			return errSuccess
+		}).
+			Flag(&flagDropShellNixGL, "s", command.BoolFlag(false), "Drop to a shell on nixGL build").
+			Flag(&flagAutoDrivers, "auto-drivers", command.BoolFlag(false), "Attempt automatic opengl driver detection")
+	}
+
+	c.MustParse(os.Args[1:], func(err error) {
+		msg.Verbosef("command returned %v", err)
+		if errors.Is(err, errSuccess) {
+			msg.BeforeExit()
+			os.Exit(0)
+		}
+	})
+	log.Fatal("unreachable")
+}

cmd/hpkg/paths.go

@@ -0,0 +1,117 @@
+package main
+
+import (
+	"log"
+	"os"
+	"os/exec"
+	"strconv"
+	"sync/atomic"
+
+	"hakurei.app/container/check"
+	"hakurei.app/container/fhs"
+	"hakurei.app/hst"
+	"hakurei.app/message"
+)
+
+const bash = "bash"
+
+var (
+	dataHome *check.Absolute
+)
+
+func init() {
+	// dataHome
+	if a, err := check.NewAbs(os.Getenv("HAKUREI_DATA_HOME")); err == nil {
+		dataHome = a
+	} else {
+		dataHome = fhs.AbsVarLib.Append("hakurei/" + strconv.Itoa(os.Getuid()))
+	}
+}
+
+var (
+	pathBin = fhs.AbsRoot.Append("bin")
+
+	pathNix           = check.MustAbs("/nix/")
+	pathNixStore      = pathNix.Append("store/")
+	pathCurrentSystem = fhs.AbsRun.Append("current-system")
+	pathSwBin         = pathCurrentSystem.Append("sw/bin/")
+	pathShell         = pathSwBin.Append(bash)
+
+	pathData     = check.MustAbs("/data")
+	pathDataData = pathData.Append("data")
+)
+
+func lookPath(file string) string {
+	if p, err := exec.LookPath(file); err != nil {
+		log.Fatalf("%s: command not found", file)
+		return ""
+	} else {
+		return p
+	}
+}
+
+var beforeRunFail = new(atomic.Pointer[func()])
+
+func mustRun(msg message.Msg, name string, arg ...string) {
+	msg.Verbosef("spawning process: %q %q", name, arg)
+	cmd := exec.Command(name, arg...)
+	cmd.Stdin, cmd.Stdout, cmd.Stderr = os.Stdin, os.Stdout, os.Stderr
+	if err := cmd.Run(); err != nil {
+		if f := beforeRunFail.Swap(nil); f != nil {
+			(*f)()
+		}
+		log.Fatalf("%s: %v", name, err)
+	}
+}
+
+type appPathSet struct {
+	// ${dataHome}/${id}
+	baseDir *check.Absolute
+	// ${baseDir}/app
+	metaPath *check.Absolute
+	// ${baseDir}/files
+	homeDir *check.Absolute
+	// ${baseDir}/cache
+	cacheDir *check.Absolute
+	// ${baseDir}/cache/nix
+	nixPath *check.Absolute
+}
+
+func pathSetByApp(id string) *appPathSet {
+	pathSet := new(appPathSet)
+	pathSet.baseDir = dataHome.Append(id)
+	pathSet.metaPath = pathSet.baseDir.Append("app")
+	pathSet.homeDir = pathSet.baseDir.Append("files")
+	pathSet.cacheDir = pathSet.baseDir.Append("cache")
+	pathSet.nixPath = pathSet.cacheDir.Append("nix")
+	return pathSet
+}
+
+func appendGPUFilesystem(config *hst.Config) {
+	config.Container.Filesystem = append(config.Container.Filesystem, []hst.FilesystemConfigJSON{
+		// flatpak commit 763a686d874dd668f0236f911de00b80766ffe79
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("dri"), Device: true, Optional: true}},
+		// mali
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("mali"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("mali0"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("umplock"), Device: true, Optional: true}},
+		// nvidia
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidiactl"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia-modeset"), Device: true, Optional: true}},
+		// nvidia OpenCL/CUDA
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia-uvm"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia-uvm-tools"), Device: true, Optional: true}},
+
+		// flatpak commit d2dff2875bb3b7e2cd92d8204088d743fd07f3ff
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia0"), Device: true, Optional: true}}, {FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia1"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia2"), Device: true, Optional: true}}, {FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia3"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia4"), Device: true, Optional: true}}, {FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia5"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia6"), Device: true, Optional: true}}, {FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia7"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia8"), Device: true, Optional: true}}, {FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia9"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia10"), Device: true, Optional: true}}, {FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia11"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia12"), Device: true, Optional: true}}, {FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia13"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia14"), Device: true, Optional: true}}, {FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia15"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia16"), Device: true, Optional: true}}, {FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia17"), Device: true, Optional: true}},
+		{FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia18"), Device: true, Optional: true}}, {FilesystemConfig: &hst.FSBind{Source: fhs.AbsDev.Append("nvidia19"), Device: true, Optional: true}},
+	}...)
+}

cmd/hpkg/proc.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"io"
+	"log"
+	"os"
+	"os/exec"
+
+	"hakurei.app/hst"
+	"hakurei.app/internal/info"
+	"hakurei.app/message"
+)
+
+var hakureiPathVal = info.MustHakureiPath().String()
+
+func mustRunApp(ctx context.Context, msg message.Msg, config *hst.Config, beforeFail func()) {
+	var (
+		cmd *exec.Cmd
+		st  io.WriteCloser
+	)
+
+	if r, w, err := os.Pipe(); err != nil {
+		beforeFail()
+		log.Fatalf("cannot pipe: %v", err)
+	} else {
+		if msg.IsVerbose() {
+			cmd = exec.CommandContext(ctx, hakureiPathVal, "-v", "app", "3")
+		} else {
+			cmd = exec.CommandContext(ctx, hakureiPathVal, "app", "3")
+		}
+		cmd.Stdin, cmd.Stdout, cmd.Stderr = os.Stdin, os.Stdout, os.Stderr
+		cmd.ExtraFiles = []*os.File{r}
+		st = w
+	}
+
+	go func() {
+		if err := json.NewEncoder(st).Encode(config); err != nil {
+			beforeFail()
+			log.Fatalf("cannot send configuration: %v", err)
+		}
+	}()
+
+	if err := cmd.Start(); err != nil {
+		beforeFail()
+		log.Fatalf("cannot start hakurei: %v", err)
+	}
+	if err := cmd.Wait(); err != nil {
+		var exitError *exec.ExitError
+		if errors.As(err, &exitError) {
+			beforeFail()
+			msg.BeforeExit()
+			os.Exit(exitError.ExitCode())
+		} else {
+			beforeFail()
+			log.Fatalf("cannot wait: %v", err)
+		}
+	}
+}

cmd/hpkg/test/configuration.nix

@@ -0,0 +1,62 @@
+{ pkgs, ... }:
+{
+  users.users = {
+    alice = {
+      isNormalUser = true;
+      description = "Alice Foobar";
+      password = "foobar";
+      uid = 1000;
+    };
+  };
+
+  home-manager.users.alice.home.stateVersion = "24.11";
+
+  # Automatically login on tty1 as a normal user:
+  services.getty.autologinUser = "alice";
+
+  environment = {
+    variables = {
+      SWAYSOCK = "/tmp/sway-ipc.sock";
+      WLR_RENDERER = "pixman";
+    };
+  };
+
+  # Automatically configure and start Sway when logging in on tty1:
+  programs.bash.loginShellInit = ''
+    if [ "$(tty)" = "/dev/tty1" ]; then
+      set -e
+
+      mkdir -p ~/.config/sway
+      (sed s/Mod4/Mod1/ /etc/sway/config &&
+      echo 'output * bg ${pkgs.nixos-artwork.wallpapers.simple-light-gray.gnomeFilePath} fill' &&
+      echo 'output Virtual-1 res 1680x1050') > ~/.config/sway/config
+
+      sway --validate
+      systemd-cat --identifier=session sway && touch /tmp/sway-exit-ok
+    fi
+  '';
+
+  programs.sway.enable = true;
+
+  virtualisation = {
+    diskSize = 6 * 1024;
+
+    qemu.options = [
+      # Need to switch to a different GPU driver than the default one (-vga std) so that Sway can launch:
+      "-vga none -device virtio-gpu-pci"
+
+      # Increase zstd performance:
+      "-smp 8"
+    ];
+  };
+
+  environment.hakurei = {
+    enable = true;
+    stateDir = "/var/lib/hakurei";
+    users.alice = 0;
+
+    extraHomeConfig = {
+      home.stateVersion = "23.05";
+    };
+  };
+}

cmd/hpkg/test/default.nix

@@ -0,0 +1,34 @@
+{
+  testers,
+  callPackage,
+
+  system,
+  self,
+}:
+let
+  buildPackage = self.buildPackage.${system};
+in
+testers.nixosTest {
+  name = "hpkg";
+  nodes.machine = {
+    environment.etc = {
+      "foot.pkg".source = callPackage ./foot.nix { inherit buildPackage; };
+    };
+
+    imports = [
+      ./configuration.nix
+
+      self.nixosModules.hakurei
+      self.inputs.home-manager.nixosModules.home-manager
+    ];
+  };
+
+  # adapted from nixos sway integration tests
+
+  # testScriptWithTypes:49: error: Cannot call function of unknown type
+  #           (machine.succeed if succeed else machine.execute)(
+  #           ^
+  # Found 1 error in 1 file (checked 1 source file)
+  skipTypeCheck = true;
+  testScript = builtins.readFile ./test.py;
+}

cmd/hpkg/test/foot.nix

@@ -0,0 +1,48 @@
+{
+  lib,
+  buildPackage,
+  foot,
+  wayland-utils,
+  inconsolata,
+}:
+
+buildPackage {
+  name = "foot";
+  inherit (foot) version;
+
+  identity = 2;
+  id = "org.codeberg.dnkl.foot";
+
+  modules = [
+    {
+      home.packages = [
+        foot
+
+        # For wayland-info:
+        wayland-utils
+      ];
+    }
+  ];
+
+  nixosModules = [
+    {
+      # To help with OCR:
+      environment.etc."xdg/foot/foot.ini".text = lib.generators.toINI { } {
+        main = {
+          font = "inconsolata:size=14";
+        };
+        colors = rec {
+          foreground = "000000";
+          background = "ffffff";
+          regular2 = foreground;
+        };
+      };
+
+      fonts.packages = [ inconsolata ];
+    }
+  ];
+
+  script = ''
+    exec foot "$@"
+  '';
+}

cmd/hpkg/test/test.py

@@ -0,0 +1,110 @@
+import json
+import shlex
+
+q = shlex.quote
+NODE_GROUPS = ["nodes", "floating_nodes"]
+
+
+def swaymsg(command: str = "", succeed=True, type="command"):
+    assert command != "" or type != "command", "Must specify command or type"
+    shell = q(f"swaymsg -t {q(type)} -- {q(command)}")
+    with machine.nested(
+            f"sending swaymsg {shell!r}" + " (allowed to fail)" * (not succeed)
+    ):
+        ret = (machine.succeed if succeed else machine.execute)(
+            f"su - alice -c {shell}"
+        )
+
+    # execute also returns a status code, but disregard.
+    if not succeed:
+        _, ret = ret
+
+    if not succeed and not ret:
+        return None
+
+    parsed = json.loads(ret)
+    return parsed
+
+
+def walk(tree):
+    yield tree
+    for group in NODE_GROUPS:
+        for node in tree.get(group, []):
+            yield from walk(node)
+
+
+def wait_for_window(pattern):
+    def func(last_chance):
+        nodes = (node["name"] for node in walk(swaymsg(type="get_tree")))
+
+        if last_chance:
+            nodes = list(nodes)
+            machine.log(f"Last call! Current list of windows: {nodes}")
+
+        return any(pattern in name for name in nodes)
+
+    retry(func)
+
+
+def collect_state_ui(name):
+    swaymsg(f"exec hakurei ps > '/tmp/{name}.ps'")
+    machine.copy_from_vm(f"/tmp/{name}.ps", "")
+    swaymsg(f"exec hakurei --json ps > '/tmp/{name}.json'")
+    machine.copy_from_vm(f"/tmp/{name}.json", "")
+    machine.screenshot(name)
+
+
+def check_state(name, enablements):
+    instances = json.loads(machine.succeed("sudo -u alice -i XDG_RUNTIME_DIR=/run/user/1000 hakurei --json ps"))
+    if len(instances) != 1:
+        raise Exception(f"unexpected state length {len(instances)}")
+    instance = instances[0]
+
+    if len(instance['container']['args']) != 1 or not (instance['container']['args'][0].startswith("/nix/store/")) or f"hakurei-{name}-" not in (instance['container']['args'][0]):
+        raise Exception(f"unexpected args {instance['container']['args']}")
+
+    if instance['enablements'] != enablements:
+        raise Exception(f"unexpected enablements {instance['enablements']}")
+
+
+start_all()
+machine.wait_for_unit("multi-user.target")
+
+# To check hakurei's version:
+print(machine.succeed("sudo -u alice -i hakurei version"))
+
+# Wait for Sway to complete startup:
+machine.wait_for_file("/run/user/1000/wayland-1")
+machine.wait_for_file("/tmp/sway-ipc.sock")
+
+# Prepare hpkg directory:
+machine.succeed("install -dm 0700 -o alice -g users /var/lib/hakurei/1000")
+
+# Install hpkg app:
+swaymsg("exec hpkg -v install /etc/foot.pkg && touch /tmp/hpkg-install-ok")
+machine.wait_for_file("/tmp/hpkg-install-ok")
+
+# Start app (foot) with Wayland enablement:
+swaymsg("exec hpkg -v start org.codeberg.dnkl.foot")
+wait_for_window("hakurei@machine-foot")
+machine.send_chars("clear; wayland-info && touch /tmp/success-client\n")
+machine.wait_for_file("/tmp/hakurei.0/tmpdir/2/success-client")
+collect_state_ui("app_wayland")
+check_state("foot", {"wayland": True, "dbus": True, "pipewire": True})
+# Verify acl on XDG_RUNTIME_DIR:
+print(machine.succeed("getfacl --absolute-names --omit-header --numeric /tmp/hakurei.0/runtime | grep 10002"))
+machine.send_chars("exit\n")
+machine.wait_until_fails("pgrep foot")
+# Verify acl cleanup on XDG_RUNTIME_DIR:
+machine.wait_until_fails("getfacl --absolute-names --omit-header --numeric /tmp/hakurei.0/runtime | grep 10002")
+
+# Exit Sway and verify process exit status 0:
+swaymsg("exit", succeed=False)
+machine.wait_for_file("/tmp/sway-exit-ok")
+
+# Print hakurei share and rundir contents:
+print(machine.succeed("find /tmp/hakurei.0 "
+    + "-path '/tmp/hakurei.0/runtime/*/*' -prune -o "
+    + "-path '/tmp/hakurei.0/tmpdir/*/*' -prune -o "
+    + "-print"))
+print(machine.fail("ls /run/user/1000/hakurei"))

cmd/hpkg/with.go

@@ -0,0 +1,130 @@
+package main
+
+import (
+	"context"
+	"os"
+	"strings"
+
+	"hakurei.app/container/check"
+	"hakurei.app/container/fhs"
+	"hakurei.app/hst"
+	"hakurei.app/message"
+)
+
+func withNixDaemon(
+	ctx context.Context,
+	msg message.Msg,
+	action string, command []string, net bool, updateConfig func(config *hst.Config) *hst.Config,
+	app *appInfo, pathSet *appPathSet, dropShell bool, beforeFail func(),
+) {
+	flags := hst.FMultiarch | hst.FUserns // nix sandbox requires userns
+	if net {
+		flags |= hst.FHostNet
+	}
+	if dropShell {
+		flags |= hst.FTty
+	}
+
+	mustRunAppDropShell(ctx, msg, updateConfig(&hst.Config{
+		ID: app.ID,
+
+		ExtraPerms: []hst.ExtraPermConfig{
+			{Path: dataHome, Execute: true},
+			{Ensure: true, Path: pathSet.baseDir, Read: true, Write: true, Execute: true},
+		},
+
+		Identity: app.Identity,
+
+		Container: &hst.ContainerConfig{
+			Hostname: formatHostname(app.Name) + "-" + action,
+
+			Filesystem: []hst.FilesystemConfigJSON{
+				{FilesystemConfig: &hst.FSBind{Target: fhs.AbsEtc, Source: pathSet.cacheDir.Append("etc"), Special: true}},
+				{FilesystemConfig: &hst.FSBind{Source: pathSet.nixPath, Target: pathNix, Write: true}},
+				{FilesystemConfig: &hst.FSLink{Target: pathCurrentSystem, Linkname: app.CurrentSystem.String()}},
+				{FilesystemConfig: &hst.FSLink{Target: pathBin, Linkname: pathSwBin.String()}},
+				{FilesystemConfig: &hst.FSLink{Target: fhs.AbsUsrBin, Linkname: pathSwBin.String()}},
+				{FilesystemConfig: &hst.FSBind{Target: pathDataData.Append(app.ID), Source: pathSet.homeDir, Write: true, Ensure: true}},
+			},
+
+			Username: "hakurei",
+			Shell:    pathShell,
+			Home:     pathDataData.Append(app.ID),
+
+			Path: pathShell,
+			Args: []string{bash, "-lc", "rm -f /nix/var/nix/daemon-socket/socket && " +
+				// start nix-daemon
+				"nix-daemon --store / & " +
+				// wait for socket to appear
+				"(while [ ! -S /nix/var/nix/daemon-socket/socket ]; do sleep 0.01; done) && " +
+				// create directory so nix stops complaining
+				"mkdir -p /nix/var/nix/profiles/per-user/root/channels && " +
+				strings.Join(command, " && ") +
+				// terminate nix-daemon
+				" && pkill nix-daemon",
+			},
+
+			Flags: flags,
+		},
+	}), dropShell, beforeFail)
+}
+
+func withCacheDir(
+	ctx context.Context,
+	msg message.Msg,
+	action string, command []string, workDir *check.Absolute,
+	app *appInfo, pathSet *appPathSet, dropShell bool, beforeFail func(),
+) {
+	flags := hst.FMultiarch
+	if dropShell {
+		flags |= hst.FTty
+	}
+
+	mustRunAppDropShell(ctx, msg, &hst.Config{
+		ID: app.ID,
+
+		ExtraPerms: []hst.ExtraPermConfig{
+			{Path: dataHome, Execute: true},
+			{Ensure: true, Path: pathSet.baseDir, Read: true, Write: true, Execute: true},
+			{Path: workDir, Execute: true},
+		},
+
+		Identity: app.Identity,
+
+		Container: &hst.ContainerConfig{
+			Hostname: formatHostname(app.Name) + "-" + action,
+
+			Filesystem: []hst.FilesystemConfigJSON{
+				{FilesystemConfig: &hst.FSBind{Target: fhs.AbsEtc, Source: workDir.Append(fhs.Etc), Special: true}},
+				{FilesystemConfig: &hst.FSBind{Source: workDir.Append("nix"), Target: pathNix}},
+				{FilesystemConfig: &hst.FSLink{Target: pathCurrentSystem, Linkname: app.CurrentSystem.String()}},
+				{FilesystemConfig: &hst.FSLink{Target: pathBin, Linkname: pathSwBin.String()}},
+				{FilesystemConfig: &hst.FSLink{Target: fhs.AbsUsrBin, Linkname: pathSwBin.String()}},
+				{FilesystemConfig: &hst.FSBind{Source: workDir, Target: hst.AbsPrivateTmp.Append("bundle")}},
+				{FilesystemConfig: &hst.FSBind{Target: pathDataData.Append(app.ID, "cache"), Source: pathSet.cacheDir, Write: true, Ensure: true}},
+			},
+
+			Username: "nixos",
+			Shell:    pathShell,
+			Home:     pathDataData.Append(app.ID, "cache"),
+
+			Path: pathShell,
+			Args: []string{bash, "-lc", strings.Join(command, " && ")},
+
+			Flags: flags,
+		},
+	}, dropShell, beforeFail)
+}
+
+func mustRunAppDropShell(ctx context.Context, msg message.Msg, config *hst.Config, dropShell bool, beforeFail func()) {
+	if dropShell {
+		if config.Container != nil {
+			config.Container.Args = []string{bash, "-l"}
+		}
+		mustRunApp(ctx, msg, config, beforeFail)
+		beforeFail()
+		msg.BeforeExit()
+		os.Exit(0)
+	}
+	mustRunApp(ctx, msg, config, beforeFail)
+}

cmd/irdump/main.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"errors"
+	"log"
+	"os"
+
+	"hakurei.app/command"
+	"hakurei.app/internal/pkg"
+)
+
+func main() {
+	log.SetFlags(0)
+	log.SetPrefix("irdump: ")
+
+	var (
+		flagOutput string
+		flagReal   bool
+		flagHeader bool
+		flagForce  bool
+		flagRaw    bool
+	)
+	c := command.New(os.Stderr, log.Printf, "irdump", func(args []string) (err error) {
+		var input *os.File
+		if len(args) != 1 {
+			return errors.New("irdump requires 1 argument")
+		}
+		if input, err = os.Open(args[0]); err != nil {
+			return
+		}
+		defer input.Close()
+
+		var output *os.File
+		if flagOutput == "" {
+			output = os.Stdout
+		} else {
+			defer output.Close()
+			if output, err = os.Create(flagOutput); err != nil {
+				return
+			}
+		}
+
+		var out string
+		if out, err = pkg.Disassemble(input, flagReal, flagHeader, flagForce, flagRaw); err != nil {
+			return
+		}
+		if _, err = output.WriteString(out); err != nil {
+			return
+		}
+		return
+	}).Flag(
+		&flagOutput,
+		"o", command.StringFlag(""),
+		"Output file for asm (leave empty for stdout)",
+	).Flag(
+		&flagReal,
+		"r", command.BoolFlag(false),
+		"skip label generation; idents print real value",
+	).Flag(
+		&flagHeader,
+		"H", command.BoolFlag(false),
+		"display artifact headers",
+	).Flag(
+		&flagForce,
+		"f", command.BoolFlag(false),
+		"force display (skip validations)",
+	).Flag(
+		&flagRaw,
+		"R", command.BoolFlag(false),
+		"don't format output",
+	)
+
+	c.MustParse(os.Args[1:], func(err error) {
+		log.Fatal(err)
+	})
+}

cmd/mbf/main.go

@@ -4,22 +4,17 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"io"
 	"log"
 	"os"
 	"os/signal"
 	"path/filepath"
 	"runtime"
 	"syscall"
-	"time"
 	"unique"
 
 	"hakurei.app/command"
 	"hakurei.app/container"
 	"hakurei.app/container/check"
-	"hakurei.app/container/fhs"
-	"hakurei.app/container/seccomp"
-	"hakurei.app/container/std"
 	"hakurei.app/internal/pkg"
 	"hakurei.app/internal/rosa"
 	"hakurei.app/message"
@@ -56,16 +51,10 @@ func main() {
 		flagCures  int
 		flagBase   string
 		flagTShift int
-		flagIdle   bool
 	)
 	c := command.New(os.Stderr, log.Printf, "mbf", func([]string) (err error) {
 		msg.SwapVerbose(!flagQuiet)
 
-		flagBase = os.ExpandEnv(flagBase)
-		if flagBase == "" {
-			flagBase = "cache"
-		}
-
 		var base *check.Absolute
 		if flagBase, err = filepath.Abs(flagBase); err != nil {
 			return
@@ -81,11 +70,6 @@ func main() {
 				cache.SetThreshold(1 << flagTShift)
 			}
 		}
-
-		if flagIdle {
-			pkg.SchedPolicy = container.SCHED_IDLE
-		}
-
 		return
 	}).Flag(
 		&flagQuiet,
@@ -97,16 +81,12 @@ func main() {
 		"Maximum number of dependencies to cure at any given time",
 	).Flag(
 		&flagBase,
-		"d", command.StringFlag("$MBF_CACHE_DIR"),
+		"d", command.StringFlag("cache"),
 		"Directory to store cured artifacts",
 	).Flag(
 		&flagTShift,
 		"tshift", command.IntFlag(-1),
 		"Dependency graph size exponent, to the power of 2",
-	).Flag(
-		&flagIdle,
-		"sched-idle", command.BoolFlag(false),
-		"Set SCHED_IDLE scheduling policy",
 	)
 
 	{
@@ -129,33 +109,13 @@ func main() {
 		)
 	}
 
-	{
-		var (
-			flagGentoo   string
-			flagChecksum string
-
-			flagStage0 bool
-		)
 	c.NewCommand(
 		"stage3",
 		"Check for toolchain 3-stage non-determinism",
 		func(args []string) (err error) {
-				t := rosa.Std
+			_, _, _, stage1 := (rosa.Std - 2).NewLLVM()
-				if flagGentoo != "" {
+			_, _, _, stage2 := (rosa.Std - 1).NewLLVM()
-					t -= 3 // magic number to discourage misuse
+			_, _, _, stage3 := rosa.Std.NewLLVM()
-
-					var checksum pkg.Checksum
-					if len(flagChecksum) != 0 {
-						if err = pkg.Decode(&checksum, flagChecksum); err != nil {
-							return
-						}
-					}
-					rosa.SetGentooStage3(flagGentoo, checksum)
-				}
-
-				_, _, _, stage1 := (t - 2).NewLLVM()
-				_, _, _, stage2 := (t - 1).NewLLVM()
-				_, _, _, stage3 := t.NewLLVM()
 			var (
 				pathname *check.Absolute
 				checksum [2]unique.Handle[pkg.Checksum]
@@ -186,35 +146,9 @@ func main() {
 					"("+pkg.Encode(checksum[0].Value())+")",
 				)
 			}
-
-				if flagStage0 {
-					if pathname, _, err = cache.Cure(
-						t.Load(rosa.Stage0),
-					); err != nil {
-						return err
-					}
-					log.Println(pathname)
-				}
-
 			return
 		},
-		).
-			Flag(
-				&flagGentoo,
-				"gentoo", command.StringFlag(""),
-				"Bootstrap from a Gentoo stage3 tarball",
-			).
-			Flag(
-				&flagChecksum,
-				"checksum", command.StringFlag(""),
-				"Checksum of Gentoo stage3 tarball",
-			).
-			Flag(
-				&flagStage0,
-				"stage0", command.BoolFlag(false),
-				"Create bootstrap stage0 tarball",
 	)
-	}
 
 	{
 		var (
@@ -228,7 +162,7 @@ func main() {
 					return errors.New("cure requires 1 argument")
 				}
 				if p, ok := rosa.ResolveName(args[0]); !ok {
-					return fmt.Errorf("unknown artifact %q", args[0])
+					return fmt.Errorf("unsupported artifact %q", args[0])
 				} else if flagDump == "" {
 					pathname, _, err := cache.Cure(rosa.Std.Load(p))
 					if err == nil {
@@ -261,167 +195,6 @@ func main() {
 			)
 	}
 
-	c.NewCommand(
-		"status",
-		"Display the status file of an artifact",
-		func(args []string) error {
-			if len(args) != 1 {
-				return errors.New("status requires 1 argument")
-			}
-			if p, ok := rosa.ResolveName(args[0]); !ok {
-				return fmt.Errorf("unknown artifact %q", args[0])
-			} else {
-				r, err := cache.OpenStatus(rosa.Std.Load(p))
-				if err != nil {
-					if errors.Is(err, os.ErrNotExist) {
-						return errors.New(args[0] + " was never cured")
-					}
-					return err
-				}
-
-				_, err = io.Copy(os.Stdout, r)
-				return errors.Join(err, r.Close())
-			}
-		},
-	)
-
-	{
-		var (
-			flagNet     bool
-			flagSession bool
-
-			flagWithToolchain bool
-		)
-		c.NewCommand(
-			"shell",
-			"Interactive shell in the specified Rosa OS environment",
-			func(args []string) error {
-				root := make([]pkg.Artifact, 0, 6+len(args))
-				for _, arg := range args {
-					p, ok := rosa.ResolveName(arg)
-					if !ok {
-						return fmt.Errorf("unknown artifact %q", arg)
-					}
-					root = append(root, rosa.Std.Load(p))
-				}
-
-				if flagWithToolchain {
-					musl, compilerRT, runtimes, clang := rosa.Std.NewLLVM()
-					root = append(root, musl, compilerRT, runtimes, clang)
-				} else {
-					root = append(root, rosa.Std.Load(rosa.Musl))
-				}
-				root = append(root,
-					rosa.Std.Load(rosa.Mksh),
-					rosa.Std.Load(rosa.Toybox),
-				)
-
-				type cureRes struct {
-					pathname *check.Absolute
-					checksum unique.Handle[pkg.Checksum]
-				}
-				cured := make(map[pkg.Artifact]cureRes)
-				for _, a := range root {
-					pathname, checksum, err := cache.Cure(a)
-					if err != nil {
-						return err
-					}
-					cured[a] = cureRes{pathname, checksum}
-				}
-
-				layers := pkg.PromoteLayers(root, func(a pkg.Artifact) (
-					*check.Absolute,
-					unique.Handle[pkg.Checksum],
-				) {
-					res := cured[a]
-					return res.pathname, res.checksum
-				}, func(i int, d pkg.Artifact) {
-					r := pkg.Encode(cache.Ident(d).Value())
-					if s, ok := d.(fmt.Stringer); ok {
-						if name := s.String(); name != "" {
-							r += "-" + name
-						}
-					}
-					msg.Verbosef("promoted layer %d as %s", i, r)
-				})
-
-				z := container.New(ctx, msg)
-				z.WaitDelay = 3 * time.Second
-				z.SeccompPresets = pkg.SeccompPresets
-				z.SeccompFlags |= seccomp.AllowMultiarch
-				z.ParentPerm = 0700
-				z.HostNet = flagNet
-				z.RetainSession = flagSession
-				z.Hostname = "localhost"
-				z.Uid, z.Gid = (1<<10)-1, (1<<10)-1
-				z.Stdin, z.Stdout, z.Stderr = os.Stdin, os.Stdout, os.Stderr
-
-				var tempdir *check.Absolute
-				if s, err := filepath.Abs(os.TempDir()); err != nil {
-					return err
-				} else if tempdir, err = check.NewAbs(s); err != nil {
-					return err
-				}
-
-				z.Dir = fhs.AbsRoot
-				z.Env = []string{
-					"SHELL=/system/bin/mksh",
-					"PATH=/system/bin",
-					"HOME=/",
-				}
-				z.Path = rosa.AbsSystem.Append("bin", "mksh")
-				z.Args = []string{"mksh"}
-				z.
-					OverlayEphemeral(fhs.AbsRoot, layers...).
-					Place(
-						fhs.AbsEtc.Append("hosts"),
-						[]byte("127.0.0.1 localhost\n"),
-					).
-					Place(
-						fhs.AbsEtc.Append("passwd"),
-						[]byte("media_rw:x:1023:1023::/:/system/bin/sh\n"+
-							"nobody:x:65534:65534::/proc/nonexistent:/system/bin/false\n"),
-					).
-					Place(
-						fhs.AbsEtc.Append("group"),
-						[]byte("media_rw:x:1023:\nnobody:x:65534:\n"),
-					).
-					Bind(tempdir, fhs.AbsTmp, std.BindWritable).
-					Proc(fhs.AbsProc).Dev(fhs.AbsDev, true)
-
-				if err := z.Start(); err != nil {
-					return err
-				}
-				if err := z.Serve(); err != nil {
-					return err
-				}
-				return z.Wait()
-			},
-		).
-			Flag(
-				&flagNet,
-				"net", command.BoolFlag(false),
-				"Share host net namespace",
-			).
-			Flag(
-				&flagSession,
-				"session", command.BoolFlag(false),
-				"Retain session",
-			).
-			Flag(
-				&flagWithToolchain,
-				"with-toolchain", command.BoolFlag(false),
-				"Include the stage3 LLVM toolchain",
-			)
-
-	}
-
-	c.Command(
-		"help",
-		"Show this help message",
-		func([]string) error { c.PrintHelp(); return nil },
-	)
-
 	c.MustParse(os.Args[1:], func(err error) {
 		if cache != nil {
 			cache.Close()

cmd/pkgserver/main.go

@@ -1,55 +0,0 @@
-package main
-
-import (
-	"embed"
-	"fmt"
-	"net/http"
-)
-
-//go:generate sh -c "sass ui/static/dark.scss ui/static/dark.css && sass ui/static/light.scss ui/static/light.css && tsc ui/static/index.ts"
-//go:embed ui/*
-var content embed.FS
-
-func serveWebUI(w http.ResponseWriter, r *http.Request) {
-	fmt.Printf("serveWebUI: %s\n", r.URL.Path)
-	w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
-	w.Header().Set("Pragma", "no-cache")
-	w.Header().Set("Expires", "0")
-	w.Header().Set("X-Content-Type-Options", "nosniff")
-	w.Header().Set("X-XSS-Protection", "1")
-	w.Header().Set("X-Frame-Options", "DENY")
-
-	http.ServeFileFS(w, r, content, "ui/index.html")
-}
-func serveStaticContent(w http.ResponseWriter, r *http.Request) {
-	fmt.Printf("serveStaticContent: %s\n", r.URL.Path)
-	switch r.URL.Path {
-	case "/static/style.css":
-		darkTheme := r.CookiesNamed("dark_theme")
-		if len(darkTheme) > 0 && darkTheme[0].Value == "true" {
-			http.ServeFileFS(w, r, content, "ui/static/dark.css")
-		} else {
-			http.ServeFileFS(w, r, content, "ui/static/light.css")
-		}
-		break
-	case "/favicon.ico":
-		http.ServeFileFS(w, r, content, "ui/static/favicon.ico")
-		break
-	case "/static/index.js":
-		http.ServeFileFS(w, r, content, "ui/static/index.js")
-		break
-	default:
-		http.NotFound(w, r)
-
-	}
-}
-func serveAPI(w http.ResponseWriter, r *http.Request) {
-
-}
-func main() {
-	http.HandleFunc("GET /{$}", serveWebUI)
-	http.HandleFunc("GET /favicon.ico", serveStaticContent)
-	http.HandleFunc("GET /static/", serveStaticContent)
-	http.HandleFunc("GET /api/", serveAPI)
-	http.ListenAndServe(":8067", nil)
-}

cmd/pkgserver/ui/index.html

@@ -1,26 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <link rel="stylesheet" href="static/style.css">
-    <title>Hakurei PkgServer</title>
-    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script>
-    <script src="static/index.js"></script>
-</head>
-<body>
-<h1>Hakurei PkgServer</h1>
-
-<table id="pkg-list">
-    <tr><th>Status</th><th>Name</th><th>Version</th></tr>
-</table>
-<p>Showing entries <span id="entry-counter"></span>.</p>
-<span class="bottom-nav"><a href="javascript:prevPage()">&laquo; Previous</a> <span id="page-number">1</span> <a href="javascript:nextPage()">Next &raquo;</a></span>
-<span><label for="count">Entries per page:</label><select name="count" id="count">
-    <option value="10">10</option>
-    <option value="25">25</option>
-    <option value="50">50</option>
-    <option value="100">100</option>
-</select></span>
-</body>
-<footer>&copy; <a href="https://hakurei.app/">Hakurei</a>. Licensed under the MIT license.</footer>
-</html>

cmd/pkgserver/ui/static/dark.css

@@ -1,6 +0,0 @@
-@use 'common';
-html {
-  background-color: #2c2c2c;
-  color: ghostwhite; }
-
-/*# sourceMappingURL=dark.css.map */

cmd/pkgserver/ui/static/dark.css.map

@@ -1,7 +0,0 @@
-{
-"version": 3,
-"mappings": "AAAA,aAAa;AAEb,IAAK;EACH,gBAAgB,EAAE,OAAO;EACzB,KAAK,EAAE,UAAU",
-"sources": ["dark.scss"],
-"names": [],
-"file": "dark.css"
-}

cmd/pkgserver/ui/static/dark.scss

@@ -1,6 +0,0 @@
-@use 'common';
-
-html {
-  background-color: #2c2c2c;
-  color: ghostwhite;
-}

cmd/pkgserver/ui/static/index.js

@@ -1,67 +0,0 @@
-"use strict";
-var PackageEntry = /** @class */ (function () {
-    function PackageEntry() {
-    }
-    return PackageEntry;
-}());
-var State = /** @class */ (function () {
-    function State() {
-        this.entriesPerPage = 10;
-        this.currentPage = 1;
-        this.entryIndex = 0;
-        this.loadedEntries = [];
-    }
-    State.prototype.getEntriesPerPage = function () {
-        return this.entriesPerPage;
-    };
-    State.prototype.setEntriesPerPage = function (entriesPerPage) {
-        this.entriesPerPage = entriesPerPage;
-        this.updateRange();
-    };
-    State.prototype.getCurrentPage = function () {
-        return this.currentPage;
-    };
-    State.prototype.setCurrentPage = function (page) {
-        this.currentPage = page;
-        document.getElementById("page-number").innerText = String(this.currentPage);
-        this.updateRange();
-    };
-    State.prototype.getEntryIndex = function () {
-        return this.entryIndex;
-    };
-    State.prototype.setEntryIndex = function (entryIndex) {
-        this.entryIndex = entryIndex;
-        this.updateRange();
-    };
-    State.prototype.getLoadedEntries = function () {
-        return this.loadedEntries;
-    };
-    State.prototype.getMaxPage = function () {
-        return this.loadedEntries.length / this.entriesPerPage;
-    };
-    State.prototype.updateRange = function () {
-        var max = Math.min(this.entryIndex + this.entriesPerPage, this.loadedEntries.length);
-        document.getElementById("entry-counter").innerText = "".concat(this.entryIndex, "-").concat(max, " of ").concat(this.loadedEntries.length);
-    };
-    return State;
-}());
-var STATE;
-function prevPage() {
-    var current = STATE.getCurrentPage();
-    if (current > 1) {
-        STATE.setCurrentPage(STATE.getCurrentPage() - 1);
-    }
-}
-function nextPage() {
-    var current = STATE.getCurrentPage();
-    if (current < STATE.getMaxPage()) {
-        STATE.setCurrentPage(STATE.getCurrentPage() + 1);
-    }
-}
-document.addEventListener("DOMContentLoaded", function () {
-    STATE = new State();
-    STATE.updateRange();
-    document.getElementById("count").addEventListener("change", function (event) {
-        STATE.setEntriesPerPage(parseInt(event.target.value));
-    });
-});

cmd/pkgserver/ui/static/index.ts

@@ -1,66 +0,0 @@
-"use strict"
-
-class PackageEntry {
-
-}
-class State {
-    entriesPerPage: number = 10
-    currentPage: number = 1
-    entryIndex: number = 0
-    loadedEntries: PackageEntry[] = []
-    getEntriesPerPage(): number {
-        return this.entriesPerPage
-    }
-    setEntriesPerPage(entriesPerPage: number) {
-        this.entriesPerPage = entriesPerPage
-        this.updateRange()
-    }
-    getCurrentPage(): number {
-        return this.currentPage
-    }
-    setCurrentPage(page: number) {
-        this.currentPage = page
-        document.getElementById("page-number").innerText = String(this.currentPage)
-        this.updateRange()
-    }
-    getEntryIndex(): number {
-        return this.entryIndex
-    }
-    setEntryIndex(entryIndex: number) {
-        this.entryIndex = entryIndex
-        this.updateRange()
-    }
-    getLoadedEntries(): PackageEntry[] {
-        return this.loadedEntries
-    }
-    getMaxPage(): number {
-        return this.loadedEntries.length / this.entriesPerPage
-    }
-    updateRange() {
-        let max = Math.min(this.entryIndex + this.entriesPerPage, this.loadedEntries.length)
-        document.getElementById("entry-counter").innerText = `${this.entryIndex}-${max} of ${this.loadedEntries.length}`
-    }
-}
-
-let STATE: State
-
-function prevPage() {
-    let current = STATE.getCurrentPage()
-    if (current > 1) {
-        STATE.setCurrentPage(STATE.getCurrentPage() - 1)
-    }
-}
-function nextPage() {
-    let current = STATE.getCurrentPage()
-    if (current < STATE.getMaxPage()) {
-        STATE.setCurrentPage(STATE.getCurrentPage() + 1)
-    }
-}
-
-document.addEventListener("DOMContentLoaded", () => {
-    STATE = new State()
-    STATE.updateRange()
-    document.getElementById("count").addEventListener("change", (event) => {
-        STATE.setEntriesPerPage(parseInt((event.target as HTMLSelectElement).value))
-    })
-})

cmd/pkgserver/ui/static/light.css

@@ -1,6 +0,0 @@
-@use 'common';
-html {
-  background-color: #d3d3d3;
-  color: black; }
-
-/*# sourceMappingURL=light.css.map */

cmd/pkgserver/ui/static/light.css.map

@@ -1,7 +0,0 @@
-{
-"version": 3,
-"mappings": "AAAA,aAAa;AAEb,IAAK;EACH,gBAAgB,EAAE,OAAO;EACzB,KAAK,EAAE,KAAK",
-"sources": ["light.scss"],
-"names": [],
-"file": "light.css"
-}

cmd/pkgserver/ui/static/light.scss

@@ -1,6 +0,0 @@
-@use 'common';
-
-html {
-  background-color: #d3d3d3;
-  color: black;
-}

cmd/sharefs/fuse.go

@@ -33,7 +33,6 @@ import (
 
 	"hakurei.app/container"
 	"hakurei.app/container/check"
-	"hakurei.app/container/fhs"
 	"hakurei.app/container/std"
 	"hakurei.app/hst"
 	"hakurei.app/internal/helper/proc"
@@ -442,7 +441,12 @@ func _main(s ...string) (exitCode int) {
 		// keep fuse_parse_cmdline happy in the container
 		z.Tmpfs(check.MustAbs(container.Nonexistent), 1<<10, 0755)
 
-		z.Path = fhs.AbsProcSelfExe
+		if a, err := check.NewAbs(container.MustExecutable(msg)); err != nil {
+			log.Println(err)
+			return 5
+		} else {
+			z.Path = a
+		}
 		z.Args = s
 		z.ForwardCancel = true
 		z.SeccompPresets |= std.PresetStrict

container/autoetc.go

@@ -10,7 +10,8 @@ import (
 
 func init() { gob.Register(new(AutoEtcOp)) }
 
-// Etc is a helper for appending [AutoEtcOp] to [Ops].
+// Etc appends an [Op] that expands host /etc into a toplevel symlink mirror with /etc semantics.
+// This is not a generic setup op. It is implemented here to reduce ipc overhead.
 func (f *Ops) Etc(host *check.Absolute, prefix string) *Ops {
 	e := &AutoEtcOp{prefix}
 	f.Mkdir(fhs.AbsEtc, 0755)
@@ -19,9 +20,6 @@ func (f *Ops) Etc(host *check.Absolute, prefix string) *Ops {
 	return f
 }
 
-// AutoEtcOp expands host /etc into a toplevel symlink mirror with /etc semantics.
-//
-// This is not a generic setup op. It is implemented here to reduce ipc overhead.
 type AutoEtcOp struct{ Prefix string }
 
 func (e *AutoEtcOp) Valid() bool                                { return e != nil }

container/autoroot.go

@@ -11,15 +11,13 @@ import (
 
 func init() { gob.Register(new(AutoRootOp)) }
 
-// Root is a helper for appending [AutoRootOp] to [Ops].
+// Root appends an [Op] that expands a directory into a toplevel bind mount mirror on container root.
+// This is not a generic setup op. It is implemented here to reduce ipc overhead.
 func (f *Ops) Root(host *check.Absolute, flags int) *Ops {
 	*f = append(*f, &AutoRootOp{host, flags, nil})
 	return f
 }
 
-// AutoRootOp expands a directory into a toplevel bind mount mirror on container root.
-//
-// This is not a generic setup op. It is implemented here to reduce ipc overhead.
 type AutoRootOp struct {
 	Host *check.Absolute
 	// passed through to bindMount

container/capability.go

@@ -50,16 +50,10 @@ func capset(hdrp *capHeader, datap *[2]capData) error {
 }
 
 // capBoundingSetDrop drops a capability from the calling thread's capability bounding set.
-func capBoundingSetDrop(cap uintptr) error {
+func capBoundingSetDrop(cap uintptr) error { return Prctl(syscall.PR_CAPBSET_DROP, cap, 0) }
-	return Prctl(syscall.PR_CAPBSET_DROP, cap, 0)
-}
 
 // capAmbientClearAll clears the ambient capability set of the calling thread.
-func capAmbientClearAll() error {
+func capAmbientClearAll() error { return Prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0) }
-	return Prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0)
-}
 
 // capAmbientRaise adds to the ambient capability set of the calling thread.
-func capAmbientRaise(cap uintptr) error {
+func capAmbientRaise(cap uintptr) error { return Prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, cap) }
-	return Prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_RAISE, cap)
-}

container/check/overlay.go

@@ -11,8 +11,7 @@ const (
 	SpecialOverlayPath = ":"
 )
 
-// EscapeOverlayDataSegment escapes a string for formatting into the data
+// EscapeOverlayDataSegment escapes a string for formatting into the data argument of an overlay mount call.
-// argument of an overlay mount system call.
 func EscapeOverlayDataSegment(s string) string {
 	if s == "" {
 		return ""

container/container.go

@@ -1,5 +1,4 @@
-// Package container implements unprivileged Linux containers with built-in
+// Package container implements unprivileged Linux containers with built-in support for syscall filtering.
-// support for syscall filtering.
 package container
 
 import (
@@ -38,30 +37,24 @@ type (
 	Container struct {
 		// Whether the container init should stay alive after its parent terminates.
 		AllowOrphan bool
-		// Scheduling policy to set via sched_setscheduler(2). The zero value
-		// skips this call. Supported policies are [SCHED_BATCH], [SCHED_IDLE].
-		SchedPolicy int
 		// Cgroup fd, nil to disable.
 		Cgroup *int
-		// ExtraFiles passed through to initial process in the container, with
+		// ExtraFiles passed through to initial process in the container,
-		// behaviour identical to its [exec.Cmd] counterpart.
+		// with behaviour identical to its [exec.Cmd] counterpart.
 		ExtraFiles []*os.File
 
-		// Write end of a pipe connected to the init to deliver [Params].
+		// param pipe for shim and init
 		setup *os.File
-		// Cancels the context passed to the underlying cmd.
+		// cancels cmd
 		cancel context.CancelFunc
-		// Closed after Wait returns. Keeps the spawning thread alive.
+		// closed after Wait returns
 		wait chan struct{}
 
 		Stdin  io.Reader
 		Stdout io.Writer
 		Stderr io.Writer
 
-		// Custom cancellation behaviour for the underlying [exec.Cmd]. Must
-		// deliver [CancelSignal] before returning.
 		Cancel    func(cmd *exec.Cmd) error
-		// Copied to the underlying [exec.Cmd].
 		WaitDelay time.Duration
 
 		cmd *exec.Cmd
@@ -290,11 +283,7 @@ func (p *Container) Start() error {
 
 	// place setup pipe before user supplied extra files, this is later restored by init
 	if fd, f, err := Setup(&p.cmd.ExtraFiles); err != nil {
-		return &StartError{
+		return &StartError{true, "set up params stream", err, false, false}
-			Fatal: true,
-			Step:  "set up params stream",
-			Err:   err,
-		}
 	} else {
 		p.setup = f
 		p.cmd.Env = []string{setupEnv + "=" + strconv.Itoa(fd)}
@@ -306,16 +295,10 @@ func (p *Container) Start() error {
 		runtime.LockOSThread()
 		p.wait = make(chan struct{})
 
-		// setup depending on per-thread state must happen here
+		done <- func() error { // setup depending on per-thread state must happen here
-		done <- func() error {
+			// PR_SET_NO_NEW_PRIVS: depends on per-thread state but acts on all processes created from that thread
-			// PR_SET_NO_NEW_PRIVS: thread-directed but acts on all processes
-			// created from the calling thread
 			if err := SetNoNewPrivs(); err != nil {
-				return &StartError{
+				return &StartError{true, "prctl(PR_SET_NO_NEW_PRIVS)", err, false, false}
-					Fatal: true,
-					Step:  "prctl(PR_SET_NO_NEW_PRIVS)",
-					Err:   err,
-				}
 			}
 
 			// landlock: depends on per-thread state but acts on a process group
@@ -327,40 +310,28 @@ func (p *Container) Start() error {
 
 				if abi, err := LandlockGetABI(); err != nil {
 					if p.HostAbstract {
-						// landlock can be skipped here as it restricts access
+						// landlock can be skipped here as it restricts access to resources
-						// to resources already covered by namespaces (pid)
+						// already covered by namespaces (pid)
 						goto landlockOut
 					}
-					return &StartError{Step: "get landlock ABI", Err: err}
+					return &StartError{false, "get landlock ABI", err, false, false}
 				} else if abi < 6 {
 					if p.HostAbstract {
 						// see above comment
 						goto landlockOut
 					}
-					return &StartError{
+					return &StartError{false, "kernel version too old for LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET", ENOSYS, true, false}
-						Step:   "kernel too old for LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET",
-						Err:    ENOSYS,
-						Origin: true,
-					}
 				} else {
 					p.msg.Verbosef("landlock abi version %d", abi)
 				}
 
 				if rulesetFd, err := rulesetAttr.Create(0); err != nil {
-					return &StartError{
+					return &StartError{true, "create landlock ruleset", err, false, false}
-						Fatal: true,
-						Step:  "create landlock ruleset",
-						Err:   err,
-					}
 				} else {
 					p.msg.Verbosef("enforcing landlock ruleset %s", rulesetAttr)
 					if err = LandlockRestrictSelf(rulesetFd, 0); err != nil {
 						_ = Close(rulesetFd)
-						return &StartError{
+						return &StartError{true, "enforce landlock ruleset", err, false, false}
-							Fatal: true,
-							Step:  "enforce landlock ruleset",
-							Err:   err,
-						}
 					}
 					if err = Close(rulesetFd); err != nil {
 						p.msg.Verbosef("cannot close landlock ruleset: %v", err)
@@ -371,30 +342,9 @@ func (p *Container) Start() error {
 			landlockOut:
 			}
 
-			// sched_setscheduler: thread-directed but acts on all processes
-			// created from the calling thread
-			if p.SchedPolicy > 0 {
-				p.msg.Verbosef("setting scheduling policy %d", p.SchedPolicy)
-				if err := schedSetscheduler(
-					0, // calling thread
-					p.SchedPolicy,
-					&schedParam{0},
-				); err != nil {
-					return &StartError{
-						Fatal: true,
-						Step:  "enforce landlock ruleset",
-						Err:   err,
-					}
-				}
-			}
-
 			p.msg.Verbose("starting container init")
 			if err := p.cmd.Start(); err != nil {
-				return &StartError{
+				return &StartError{false, "start container init", err, false, true}
-					Step:        "start container init",
-					Err:         err,
-					Passthrough: true,
-				}
 			}
 			return nil
 		}()
@@ -406,7 +356,6 @@ func (p *Container) Start() error {
 }
 
 // Serve serves [Container.Params] to the container init.
-//
 // Serve must only be called once.
 func (p *Container) Serve() error {
 	if p.setup == nil {
@@ -416,21 +365,12 @@ func (p *Container) Serve() error {
 	setup := p.setup
 	p.setup = nil
 	if err := setup.SetDeadline(time.Now().Add(initSetupTimeout)); err != nil {
-		return &StartError{
+		return &StartError{true, "set init pipe deadline", err, false, true}
-			Fatal:       true,
-			Step:        "set init pipe deadline",
-			Err:         err,
-			Passthrough: true,
-		}
 	}
 
 	if p.Path == nil {
 		p.cancel()
-		return &StartError{
+		return &StartError{false, "invalid executable pathname", EINVAL, true, false}
-			Step:   "invalid executable pathname",
-			Err:    EINVAL,
-			Origin: true,
-		}
 	}
 
 	// do not transmit nil
@@ -455,8 +395,7 @@ func (p *Container) Serve() error {
 	return err
 }
 
-// Wait blocks until the container init process to exit and releases any
+// Wait waits for the container init process to exit and releases any resources associated with the [Container].
-// resources associated with the [Container].
 func (p *Container) Wait() error {
 	if p.cmd == nil || p.cmd.Process == nil {
 		return EINVAL
@@ -501,13 +440,11 @@ func (p *Container) StderrPipe() (r io.ReadCloser, err error) {
 }
 
 func (p *Container) String() string {
-	return fmt.Sprintf(
+	return fmt.Sprintf("argv: %q, filter: %v, rules: %d, flags: %#x, presets: %#x",
-		"argv: %q, filter: %v, rules: %d, flags: %#x, presets: %#x",
+		p.Args, !p.SeccompDisable, len(p.SeccompRules), int(p.SeccompFlags), int(p.SeccompPresets))
-		p.Args, !p.SeccompDisable, len(p.SeccompRules), int(p.SeccompFlags), int(p.SeccompPresets),
-	)
 }
 
-// ProcessState returns the address of os.ProcessState held by the underlying [exec.Cmd].
+// ProcessState returns the address to os.ProcessState held by the underlying [exec.Cmd].
 func (p *Container) ProcessState() *os.ProcessState {
 	if p.cmd == nil {
 		return nil
@@ -515,8 +452,7 @@ func (p *Container) ProcessState() *os.ProcessState {
 	return p.cmd.ProcessState
 }
 
-// New returns the address to a new instance of [Container]. This value requires
+// New returns the address to a new instance of [Container] that requires further initialisation before use.
-// further initialisation before use.
 func New(ctx context.Context, msg message.Msg) *Container {
 	if msg == nil {
 		msg = message.New(nil)
@@ -525,18 +461,12 @@ func New(ctx context.Context, msg message.Msg) *Container {
 	p := &Container{ctx: ctx, msg: msg, Params: Params{Ops: new(Ops)}}
 	c, cancel := context.WithCancel(ctx)
 	p.cancel = cancel
-	p.cmd = exec.CommandContext(c, fhs.ProcSelfExe)
+	p.cmd = exec.CommandContext(c, MustExecutable(msg))
 	return p
 }
 
 // NewCommand calls [New] and initialises the [Params.Path] and [Params.Args] fields.
-func NewCommand(
+func NewCommand(ctx context.Context, msg message.Msg, pathname *check.Absolute, name string, args ...string) *Container {
-	ctx context.Context,
-	msg message.Msg,
-	pathname *check.Absolute,
-	name string,
-	args ...string,
-) *Container {
 	z := New(ctx, msg)
 	z.Path = pathname
 	z.Args = append([]string{name}, args...)

container/container_test.go

@@ -773,13 +773,14 @@ func TestMain(m *testing.M) {
 func helperNewContainerLibPaths(ctx context.Context, libPaths *[]*check.Absolute, args ...string) (c *container.Container) {
 	msg := message.New(nil)
 	msg.SwapVerbose(testing.Verbose())
+	executable := check.MustAbs(container.MustExecutable(msg))
 
 	c = container.NewCommand(ctx, msg, absHelperInnerPath, "helper", args...)
 	c.Env = append(c.Env, envDoCheck+"=1")
-	c.Bind(fhs.AbsProcSelfExe, absHelperInnerPath, 0)
+	c.Bind(executable, absHelperInnerPath, 0)
 
 	// in case test has cgo enabled
-	if entries, err := ldd.Resolve(ctx, msg, nil); err != nil {
+	if entries, err := ldd.Resolve(ctx, msg, executable); err != nil {
 		log.Fatalf("ldd: %v", err)
 	} else {
 		*libPaths = ldd.Path(entries)

container/dispatcher.go

@@ -21,8 +21,7 @@ type osFile interface {
 	fs.File
 }
 
-// syscallDispatcher provides methods that make state-dependent system calls as
+// syscallDispatcher provides methods that make state-dependent system calls as part of their behaviour.
-// part of their behaviour.
 type syscallDispatcher interface {
 	// new starts a goroutine with a new instance of syscallDispatcher.
 	// A syscallDispatcher must never be used in any goroutine other than the one owning it,

container/dispatcher_test.go

@@ -238,11 +238,8 @@ func sliceAddr[S any](s []S) *[]S { return &s }
 
 func newCheckedFile(t *testing.T, name, wantData string, closeErr error) osFile {
 	f := &checkedOsFile{t: t, name: name, want: wantData, closeErr: closeErr}
-	// check happens in Close, and cleanup is not guaranteed to run, so relying
+	// check happens in Close, and cleanup is not guaranteed to run, so relying on it for sloppy implementations will cause sporadic test results
-	// on it for sloppy implementations will cause sporadic test results
+	f.cleanup = runtime.AddCleanup(f, func(name string) { f.t.Fatalf("checkedOsFile %s became unreachable without a call to Close", name) }, f.name)
-	f.cleanup = runtime.AddCleanup(f, func(name string) {
-		panic("checkedOsFile " + name + " became unreachable without a call to Close")
-	}, name)
 	return f
 }
 

container/errors.go

@@ -43,8 +43,7 @@ func messageFromError(err error) (m string, ok bool) {
 }
 
 // messagePrefix checks and prefixes the error message of a non-pointer error.
-// While this is usable for pointer errors, such use should be avoided as nil
+// While this is usable for pointer errors, such use should be avoided as nil check is omitted.
-// check is omitted.
 func messagePrefix[T error](prefix string, err error) (string, bool) {
 	var targetError T
 	if errors.As(err, &targetError) {

container/executable.go

@@ -28,9 +28,6 @@ func copyExecutable(msg message.Msg) {
 	}
 }
 
-// MustExecutable calls [os.Executable] and terminates the process on error.
-//
-// Deprecated: This is no longer used and will be removed in 0.4.
 func MustExecutable(msg message.Msg) string {
 	executableOnce.Do(func() { copyExecutable(msg) })
 	return executable

container/fhs/abs.go

@@ -42,8 +42,6 @@ var (
 	AbsDevShm = unsafeAbs(DevShm)
 	// AbsProc is [Proc] as [check.Absolute].
 	AbsProc = unsafeAbs(Proc)
-	// AbsProcSelfExe is [ProcSelfExe] as [check.Absolute].
-	AbsProcSelfExe = unsafeAbs(ProcSelfExe)
 	// AbsSys is [Sys] as [check.Absolute].
 	AbsSys = unsafeAbs(Sys)
 )

container/fhs/fhs.go

@@ -9,8 +9,7 @@ const (
 	// Tmp points to the place for small temporary files.
 	Tmp = "/tmp/"
 
-	// Run points to a "tmpfs" file system for system packages to place runtime
+	// Run points to a "tmpfs" file system for system packages to place runtime data, socket files, and similar.
-	// data, socket files, and similar.
 	Run = "/run/"
 	// RunUser points to a directory containing per-user runtime directories,
 	// each usually individually mounted "tmpfs" instances.
@@ -18,12 +17,10 @@ const (
 
 	// Usr points to vendor-supplied operating system resources.
 	Usr = "/usr/"
-	// UsrBin points to binaries and executables for user commands that shall
+	// UsrBin points to binaries and executables for user commands that shall appear in the $PATH search path.
-	// appear in the $PATH search path.
 	UsrBin = Usr + "bin/"
 
-	// Var points to persistent, variable system data. Writable during normal
+	// Var points to persistent, variable system data. Writable during normal system operation.
-	// system operation.
 	Var = "/var/"
 	// VarLib points to persistent system data.
 	VarLib = Var + "lib/"
@@ -32,20 +29,12 @@ const (
 
 	// Dev points to the root directory for device nodes.
 	Dev = "/dev/"
-	// DevShm is the place for POSIX shared memory segments, as created via
+	// DevShm is the place for POSIX shared memory segments, as created via shm_open(3).
-	// shm_open(3).
 	DevShm = "/dev/shm/"
-	// Proc points to a virtual kernel file system exposing the process list and
+	// Proc points to a virtual kernel file system exposing the process list and other functionality.
-	// other functionality.
 	Proc = "/proc/"
-	// ProcSys points to a hierarchy below /proc/ that exposes a number of
+	// ProcSys points to a hierarchy below /proc/ that exposes a number of kernel tunables.
-	// kernel tunables.
 	ProcSys = Proc + "sys/"
-	// ProcSelf resolves to the process's own /proc/pid directory.
+	// Sys points to a virtual kernel file system exposing discovered devices and other functionality.
-	ProcSelf = Proc + "self/"
-	// ProcSelfExe is a symbolic link to program pathname.
-	ProcSelfExe = ProcSelf + "exe"
-	// Sys points to a virtual kernel file system exposing discovered devices
-	// and other functionality.
 	Sys = "/sys/"
 )

container/init.go

@@ -33,12 +33,12 @@ const (
 	- This path is only accessible by init and root:
 	  The container init sets SUID_DUMP_DISABLE and terminates if that fails.
 
-	It should be noted that none of this should become relevant at any point
+	It should be noted that none of this should become relevant at any point since the resulting
-	since the resulting intermediate root tmpfs should be effectively anonymous. */
+	intermediate root tmpfs should be effectively anonymous. */
 	intermediateHostPath = fhs.Proc + "self/fd"
 
-	// setupEnv is the name of the environment variable holding the string
+	// setupEnv is the name of the environment variable holding the string representation of
-	// representation of the read end file descriptor of the setup params pipe.
+	// the read end file descriptor of the setup params pipe.
 	setupEnv = "HAKUREI_SETUP"
 
 	// exitUnexpectedWait4 is the exit code if wait4 returns an unexpected errno.
@@ -59,8 +59,7 @@ type (
 		// late is called right before starting the initial process.
 		late(state *setupState, k syscallDispatcher) error
 
-		// prefix returns a log message prefix, and whether this Op prints no
+		// prefix returns a log message prefix, and whether this Op prints no identifying message on its own.
-		// identifying message on its own.
 		prefix() (string, bool)
 
 		Is(op Op) bool
@@ -72,11 +71,9 @@ type (
 	setupState struct {
 		nonrepeatable uintptr
 
-		// Whether early reaping has concluded. Must only be accessed in the
+		// Whether early reaping has concluded. Must only be accessed in the wait4 loop.
-		// wait4 loop.
 		processConcluded bool
-		// Process to syscall.WaitStatus populated in the wait4 loop. Freed
+		// Process to syscall.WaitStatus populated in the wait4 loop. Freed after early reaping concludes.
-		// after early reaping concludes.
 		process map[int]WaitStatus
 		// Synchronises access to process.
 		processMu sync.RWMutex
@@ -219,10 +216,9 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 	defer cancel()
 
 	/* early is called right before pivot_root into intermediate root;
-	this step is mostly for gathering information that would otherwise be
+	this step is mostly for gathering information that would otherwise be difficult to obtain
-	difficult to obtain via library functions after pivot_root, and
+	via library functions after pivot_root, and implementations are expected to avoid changing
-	implementations are expected to avoid changing the state of the mount
+	the state of the mount namespace */
-	namespace */
 	for i, op := range *params.Ops {
 		if op == nil || !op.Valid() {
 			k.fatalf(msg, "invalid op at index %d", i)
@@ -262,10 +258,10 @@ func initEntrypoint(k syscallDispatcher, msg message.Msg) {
 		k.fatalf(msg, "cannot enter intermediate root: %v", err)
 	}
 
-	/* apply is called right after pivot_root and entering the new root. This
+	/* apply is called right after pivot_root and entering the new root;
-	step sets up the container filesystem, and implementations are expected to
+	this step sets up the container filesystem, and implementations are expected to keep the host root
-	keep the host root and sysroot mount points intact but otherwise can do
+	and sysroot mount points intact but otherwise can do whatever they need to;
-	whatever they need to. Calling chdir is allowed but discouraged. */
+	chdir is allowed but discouraged */
 	for i, op := range *params.Ops {
 		// ops already checked during early setup
 		if prefix, ok := op.prefix(); ok {

container/initbind.go

@@ -12,16 +12,14 @@ import (
 
 func init() { gob.Register(new(BindMountOp)) }
 
-// Bind is a helper for appending [BindMountOp] to [Ops].
+// Bind appends an [Op] that bind mounts host path [BindMountOp.Source] on container path [BindMountOp.Target].
 func (f *Ops) Bind(source, target *check.Absolute, flags int) *Ops {
 	*f = append(*f, &BindMountOp{nil, source, target, flags})
 	return f
 }
 
-// BindMountOp creates a bind mount from host path Source to container path Target.
+// BindMountOp bind mounts host path Source on container path Target.
-//
+// Note that Flags uses bits declared in this package and should not be set with constants in [syscall].
-// Note that Flags uses bits declared in the [std] package and should not be set
-// with constants in [syscall].
 type BindMountOp struct {
 	sourceFinal, Source, Target *check.Absolute
 

container/initdaemon.go

@@ -24,7 +24,8 @@ const (
 	daemonTimeout = 5 * time.Second
 )
 
-// Daemon is a helper for appending [DaemonOp] to [Ops].
+// Daemon appends an [Op] that starts a daemon in the container and blocks until
+// [DaemonOp.Target] appears.
 func (f *Ops) Daemon(target, path *check.Absolute, args ...string) *Ops {
 	*f = append(*f, &DaemonOp{target, path, args})
 	return f

container/initdev.go

@@ -19,9 +19,7 @@ func (f *Ops) Dev(target *check.Absolute, mqueue bool) *Ops {
 }
 
 // DevWritable appends an [Op] that mounts a writable subset of host /dev.
-//
+// There is usually no good reason to write to /dev, so this should always be followed by a [RemountOp].
-// There is usually no good reason to write to /dev, so this should always be
-// followed by a [RemountOp].
 func (f *Ops) DevWritable(target *check.Absolute, mqueue bool) *Ops {
 	*f = append(*f, &MountDevOp{target, mqueue, true})
 	return f

container/initmkdir.go

@@ -10,7 +10,7 @@ import (
 
 func init() { gob.Register(new(MkdirOp)) }
 
-// Mkdir is a helper for appending [MkdirOp] to [Ops].
+// Mkdir appends an [Op] that creates a directory in the container filesystem.
 func (f *Ops) Mkdir(name *check.Absolute, perm os.FileMode) *Ops {
 	*f = append(*f, &MkdirOp{name, perm})
 	return f

container/initoverlay.go

@@ -54,11 +54,8 @@ func (e *OverlayArgumentError) Error() string {
 	}
 }
 
-// Overlay is a helper for appending [MountOverlayOp] to [Ops].
+// Overlay appends an [Op] that mounts the overlay pseudo filesystem on [MountOverlayOp.Target].
-func (f *Ops) Overlay(
+func (f *Ops) Overlay(target, state, work *check.Absolute, layers ...*check.Absolute) *Ops {
-	target, state, work *check.Absolute,
-	layers ...*check.Absolute,
-) *Ops {
 	*f = append(*f, &MountOverlayOp{
 		Target: target,
 		Lower:  layers,
@@ -68,12 +65,13 @@ func (f *Ops) Overlay(
 	return f
 }
 
-// OverlayEphemeral appends a [MountOverlayOp] with an ephemeral upperdir and workdir.
+// OverlayEphemeral appends an [Op] that mounts the overlay pseudo filesystem on [MountOverlayOp.Target]
+// with an ephemeral upperdir and workdir.
 func (f *Ops) OverlayEphemeral(target *check.Absolute, layers ...*check.Absolute) *Ops {
 	return f.Overlay(target, fhs.AbsRoot, nil, layers...)
 }
 
-// OverlayReadonly appends a readonly [MountOverlayOp].
+// OverlayReadonly appends an [Op] that mounts the overlay pseudo filesystem readonly on [MountOverlayOp.Target]
 func (f *Ops) OverlayReadonly(target *check.Absolute, layers ...*check.Absolute) *Ops {
 	return f.Overlay(target, nil, nil, layers...)
 }
@@ -84,34 +82,25 @@ type MountOverlayOp struct {
 
 	// Any filesystem, does not need to be on a writable filesystem.
 	Lower []*check.Absolute
-	// Formatted for [OptionOverlayLowerdir].
+	// formatted for [OptionOverlayLowerdir], resolved, prefixed and escaped during early
-	//
-	// Resolved, prefixed and escaped during early.
 	lower []string
-
 	// The upperdir is normally on a writable filesystem.
 	//
-	// If Work is nil and Upper holds the special value [fhs.AbsRoot], an
+	// If Work is nil and Upper holds the special value [fhs.AbsRoot],
-	// ephemeral upperdir and workdir will be set up.
+	// an ephemeral upperdir and workdir will be set up.
 	//
-	// If both Work and Upper are nil, upperdir and workdir is omitted and the
+	// If both Work and Upper are nil, upperdir and workdir is omitted and the overlay is mounted readonly.
-	// overlay is mounted readonly.
 	Upper *check.Absolute
-	// Formatted for [OptionOverlayUpperdir].
+	// formatted for [OptionOverlayUpperdir], resolved, prefixed and escaped during early
-	//
-	// Resolved, prefixed and escaped during early.
 	upper string
-
 	// The workdir needs to be an empty directory on the same filesystem as upperdir.
 	Work *check.Absolute
-	// Formatted for [OptionOverlayWorkdir].
+	// formatted for [OptionOverlayWorkdir], resolved, prefixed and escaped during early
-	//
-	// Resolved, prefixed and escaped during early.
 	work string
 
 	ephemeral bool
 
-	// Used internally for mounting to the intermediate root.
+	// used internally for mounting to the intermediate root
 	noPrefix bool
 }
 

container/initplace.go

@@ -16,7 +16,7 @@ const (
 
 func init() { gob.Register(new(TmpfileOp)) }
 
-// Place is a helper for appending [TmpfileOp] to [Ops].
+// Place appends an [Op] that places a file in container path [TmpfileOp.Path] containing [TmpfileOp.Data].
 func (f *Ops) Place(name *check.Absolute, data []byte) *Ops {
 	*f = append(*f, &TmpfileOp{name, data})
 	return f

container/initplace_test.go

@@ -21,7 +21,7 @@ func TestTmpfileOp(t *testing.T) {
 			Path: samplePath,
 			Data: sampleData,
 		}, nil, nil, []stub.Call{
-			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, (*checkedOsFile)(nil), stub.UniqueError(5)),
+			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.32768", sampleDataString, nil), stub.UniqueError(5)),
 		}, stub.UniqueError(5)},
 
 		{"Write", &Params{ParentPerm: 0700}, &TmpfileOp{
@@ -35,14 +35,14 @@ func TestTmpfileOp(t *testing.T) {
 			Path: samplePath,
 			Data: sampleData,
 		}, nil, nil, []stub.Call{
-			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.Close", sampleDataString, stub.UniqueError(3)), nil),
+			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.32768", sampleDataString, stub.UniqueError(3)), nil),
 		}, stub.UniqueError(3)},
 
 		{"ensureFile", &Params{ParentPerm: 0700}, &TmpfileOp{
 			Path: samplePath,
 			Data: sampleData,
 		}, nil, nil, []stub.Call{
-			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.ensureFile", sampleDataString, nil), nil),
+			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.32768", sampleDataString, nil), nil),
 			call("ensureFile", stub.ExpectArgs{"/sysroot/etc/passwd", os.FileMode(0444), os.FileMode(0700)}, nil, stub.UniqueError(2)),
 		}, stub.UniqueError(2)},
 
@@ -50,29 +50,29 @@ func TestTmpfileOp(t *testing.T) {
 			Path: samplePath,
 			Data: sampleData,
 		}, nil, nil, []stub.Call{
-			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.bindMount", sampleDataString, nil), nil),
+			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.32768", sampleDataString, nil), nil),
 			call("ensureFile", stub.ExpectArgs{"/sysroot/etc/passwd", os.FileMode(0444), os.FileMode(0700)}, nil, nil),
-			call("bindMount", stub.ExpectArgs{"tmp.bindMount", "/sysroot/etc/passwd", uintptr(0x5), false}, nil, stub.UniqueError(1)),
+			call("bindMount", stub.ExpectArgs{"tmp.32768", "/sysroot/etc/passwd", uintptr(0x5), false}, nil, stub.UniqueError(1)),
 		}, stub.UniqueError(1)},
 
 		{"remove", &Params{ParentPerm: 0700}, &TmpfileOp{
 			Path: samplePath,
 			Data: sampleData,
 		}, nil, nil, []stub.Call{
-			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.remove", sampleDataString, nil), nil),
+			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.32768", sampleDataString, nil), nil),
 			call("ensureFile", stub.ExpectArgs{"/sysroot/etc/passwd", os.FileMode(0444), os.FileMode(0700)}, nil, nil),
-			call("bindMount", stub.ExpectArgs{"tmp.remove", "/sysroot/etc/passwd", uintptr(0x5), false}, nil, nil),
+			call("bindMount", stub.ExpectArgs{"tmp.32768", "/sysroot/etc/passwd", uintptr(0x5), false}, nil, nil),
-			call("remove", stub.ExpectArgs{"tmp.remove"}, nil, stub.UniqueError(0)),
+			call("remove", stub.ExpectArgs{"tmp.32768"}, nil, stub.UniqueError(0)),
 		}, stub.UniqueError(0)},
 
 		{"success", &Params{ParentPerm: 0700}, &TmpfileOp{
 			Path: samplePath,
 			Data: sampleData,
 		}, nil, nil, []stub.Call{
-			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.success", sampleDataString, nil), nil),
+			call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.32768", sampleDataString, nil), nil),
 			call("ensureFile", stub.ExpectArgs{"/sysroot/etc/passwd", os.FileMode(0444), os.FileMode(0700)}, nil, nil),
-			call("bindMount", stub.ExpectArgs{"tmp.success", "/sysroot/etc/passwd", uintptr(0x5), false}, nil, nil),
+			call("bindMount", stub.ExpectArgs{"tmp.32768", "/sysroot/etc/passwd", uintptr(0x5), false}, nil, nil),
-			call("remove", stub.ExpectArgs{"tmp.success"}, nil, nil),
+			call("remove", stub.ExpectArgs{"tmp.32768"}, nil, nil),
 		}, nil},
 	})
 

container/initproc.go

@@ -10,7 +10,7 @@ import (
 
 func init() { gob.Register(new(MountProcOp)) }
 
-// Proc is a helper for appending [MountProcOp] to [Ops].
+// Proc appends an [Op] that mounts a private instance of proc.
 func (f *Ops) Proc(target *check.Absolute) *Ops {
 	*f = append(*f, &MountProcOp{target})
 	return f

container/initremount.go

@@ -9,7 +9,7 @@ import (
 
 func init() { gob.Register(new(RemountOp)) }
 
-// Remount is a helper for appending [RemountOp] to [Ops].
+// Remount appends an [Op] that applies [RemountOp.Flags] on container path [RemountOp.Target].
 func (f *Ops) Remount(target *check.Absolute, flags uintptr) *Ops {
 	*f = append(*f, &RemountOp{target, flags})
 	return f

container/landlock.go

@@ -38,7 +38,6 @@ const (
 	_LANDLOCK_ACCESS_FS_DELIM
 )
 
-// String returns a space-separated string of [LandlockAccessFS] flags.
 func (f LandlockAccessFS) String() string {
 	switch f {
 	case LANDLOCK_ACCESS_FS_EXECUTE:
@@ -117,7 +116,6 @@ const (
 	_LANDLOCK_ACCESS_NET_DELIM
 )
 
-// String returns a space-separated string of [LandlockAccessNet] flags.
 func (f LandlockAccessNet) String() string {
 	switch f {
 	case LANDLOCK_ACCESS_NET_BIND_TCP:
@@ -154,7 +152,6 @@ const (
 	_LANDLOCK_SCOPE_DELIM
 )
 
-// String returns a space-separated string of [LandlockScope] flags.
 func (f LandlockScope) String() string {
 	switch f {
 	case LANDLOCK_SCOPE_ABSTRACT_UNIX_SOCKET:
@@ -187,12 +184,10 @@ type RulesetAttr struct {
 	HandledAccessFS LandlockAccessFS
 	// Bitmask of handled network actions.
 	HandledAccessNet LandlockAccessNet
-	// Bitmask of scopes restricting a Landlock domain from accessing outside
+	// Bitmask of scopes restricting a Landlock domain from accessing outside resources (e.g. IPCs).
-	// resources (e.g. IPCs).
 	Scoped LandlockScope
 }
 
-// String returns a user-facing description of [RulesetAttr].
 func (rulesetAttr *RulesetAttr) String() string {
 	if rulesetAttr == nil {
 		return "NULL"
@@ -213,7 +208,6 @@ func (rulesetAttr *RulesetAttr) String() string {
 	return strings.Join(elems, ", ")
 }
 
-// Create loads the ruleset into the kernel.
 func (rulesetAttr *RulesetAttr) Create(flags uintptr) (fd int, err error) {
 	var pointer, size uintptr
 	// NULL needed for abi version
@@ -222,13 +216,10 @@ func (rulesetAttr *RulesetAttr) Create(flags uintptr) (fd int, err error) {
 		size = unsafe.Sizeof(*rulesetAttr)
 	}
 
-	rulesetFd, _, errno := syscall.Syscall(
+	rulesetFd, _, errno := syscall.Syscall(std.SYS_LANDLOCK_CREATE_RULESET, pointer, size, flags)
-		std.SYS_LANDLOCK_CREATE_RULESET,
-		pointer, size,
-		flags,
-	)
 	fd = int(rulesetFd)
 	err = errno
+
 	if fd < 0 {
 		return
 	}
@@ -239,19 +230,12 @@ func (rulesetAttr *RulesetAttr) Create(flags uintptr) (fd int, err error) {
 	return fd, nil
 }
 
-// LandlockGetABI returns the ABI version supported by the kernel.
 func LandlockGetABI() (int, error) {
 	return (*RulesetAttr)(nil).Create(LANDLOCK_CREATE_RULESET_VERSION)
 }
 
-// LandlockRestrictSelf applies a loaded ruleset to the calling thread.
 func LandlockRestrictSelf(rulesetFd int, flags uintptr) error {
-	r, _, errno := syscall.Syscall(
+	r, _, errno := syscall.Syscall(std.SYS_LANDLOCK_RESTRICT_SELF, uintptr(rulesetFd), flags, 0)
-		std.SYS_LANDLOCK_RESTRICT_SELF,
-		uintptr(rulesetFd),
-		flags,
-		0,
-	)
 	if r != 0 {
 		return errno
 	}

container/netlink.go

@@ -99,7 +99,7 @@ done:
 				}
 				if m.Header.Type == NLMSG_ERROR {
 					if len(m.Data) >= 4 {
-						errno := Errno(-std.Int(binary.NativeEndian.Uint32(m.Data)))
+						errno := Errno(-std.ScmpInt(binary.NativeEndian.Uint32(m.Data)))
 						if errno == 0 {
 							return nil
 						}

container/path.go

@@ -15,10 +15,7 @@ import (
 
 const (
 	// Nonexistent is a path that cannot exist.
-	//
+	// /proc is chosen because a system with covered /proc is unsupported by this package.
-	// This path can never be presented by the kernel if proc is mounted on
-	// /proc/. This can only exist if parts of /proc/ is covered, or proc is not
-	// mounted at all. Neither configuration is supported by this package.
 	Nonexistent = fhs.Proc + "nonexistent"
 
 	hostPath    = fhs.Root + hostDir

container/seccomp/libseccomp.go

@@ -88,22 +88,18 @@ var resPrefix = [...]string{
 	7: "seccomp_load failed",
 }
 
-// cbAllocateBuffer is the function signature for the function handle passed to
+// cbAllocateBuffer is the function signature for the function handle passed to hakurei_export_filter
-// hakurei_scmp_make_filter which allocates the buffer that the resulting bpf
+// which allocates the buffer that the resulting bpf program is copied into, and writes its slice header
-// program is copied into, and writes its slice header to a value held by the caller.
+// to a value held by the caller.
 type cbAllocateBuffer = func(len C.size_t) (buf unsafe.Pointer)
 
-// hakurei_scmp_allocate allocates a buffer of specified size known to the
-// runtime through a callback passed in a [cgo.Handle].
-//
 //export hakurei_scmp_allocate
 func hakurei_scmp_allocate(f C.uintptr_t, len C.size_t) (buf unsafe.Pointer) {
 	return cgo.Handle(f).Value().(cbAllocateBuffer)(len)
 }
 
-// makeFilter generates a bpf program from a slice of [std.NativeRule] and
+// makeFilter generates a bpf program from a slice of [std.NativeRule] and writes the resulting byte slice to p.
-// writes the resulting byte slice to p. The filter is installed to the current
+// The filter is installed to the current process if p is nil.
-// process if p is nil.
 func makeFilter(rules []std.NativeRule, flags ExportFlag, p *[]byte) error {
 	if len(rules) == 0 {
 		return ErrInvalidRules
@@ -174,8 +170,8 @@ func Export(rules []std.NativeRule, flags ExportFlag) (data []byte, err error) {
 	return
 }
 
-// Load generates a bpf program from a slice of [std.NativeRule] and enforces it
+// Load generates a bpf program from a slice of [std.NativeRule] and enforces it on the current process.
-// on the current process. Errors returned by libseccomp is wrapped in [LibraryError].
+// Errors returned by libseccomp is wrapped in [LibraryError].
 func Load(rules []std.NativeRule, flags ExportFlag) error { return makeFilter(rules, flags, nil) }
 
 type (

container/seccomp/std_test.go

@@ -24,8 +24,8 @@ func TestSyscallResolveName(t *testing.T) {
 }
 
 func TestRuleType(t *testing.T) {
-	assertKind[std.Uint, scmpUint](t)
+	assertKind[std.ScmpUint, scmpUint](t)
-	assertKind[std.Int, scmpInt](t)
+	assertKind[std.ScmpInt, scmpInt](t)
 
 	assertSize[std.NativeRule, syscallRule](t)
 	assertKind[std.ScmpDatum, scmpDatum](t)

container/std/seccomp.go

@@ -7,28 +7,24 @@ import (
 
 type (
 	// ScmpUint is equivalent to C.uint.
-	//
+	ScmpUint uint32
-	// Deprecated: This type has been renamed to Uint and will be removed in 0.4.
-	ScmpUint = Uint
 	// ScmpInt is equivalent to C.int.
-	//
+	ScmpInt int32
-	// Deprecated: This type has been renamed to Int and will be removed in 0.4.
-	ScmpInt = Int
 
 	// ScmpSyscall represents a syscall number passed to libseccomp via [NativeRule.Syscall].
-	ScmpSyscall Int
+	ScmpSyscall ScmpInt
 	// ScmpErrno represents an errno value passed to libseccomp via [NativeRule.Errno].
-	ScmpErrno Int
+	ScmpErrno ScmpInt
 
 	// ScmpCompare is equivalent to enum scmp_compare;
-	ScmpCompare Uint
+	ScmpCompare ScmpUint
 	// ScmpDatum is equivalent to scmp_datum_t.
 	ScmpDatum uint64
 
 	// ScmpArgCmp is equivalent to struct scmp_arg_cmp.
 	ScmpArgCmp struct {
 		// argument number, starting at 0
-		Arg Uint `json:"arg"`
+		Arg ScmpUint `json:"arg"`
 		// the comparison op, e.g. SCMP_CMP_*
 		Op ScmpCompare `json:"op"`
 

container/std/types.go

@@ -1,8 +0,0 @@
-package std
-
-type (
-	// Uint is equivalent to C.uint.
-	Uint uint32
-	// Int is equivalent to C.int.
-	Int int32
-)

container/syscall.go

@@ -3,8 +3,6 @@ package container
 import (
 	. "syscall"
 	"unsafe"
-
-	"hakurei.app/container/std"
 )
 
 // Prctl manipulates various aspects of the behavior of the calling thread or process.
@@ -43,49 +41,6 @@ func Isatty(fd int) bool {
 	return r == 0
 }
 
-// include/uapi/linux/sched.h
-const (
-	SCHED_NORMAL = iota
-	SCHED_FIFO
-	SCHED_RR
-	SCHED_BATCH
-	_ // SCHED_ISO: reserved but not implemented yet
-	SCHED_IDLE
-	SCHED_DEADLINE
-	SCHED_EXT
-)
-
-// schedParam is equivalent to struct sched_param from include/linux/sched.h.
-type schedParam struct {
-	// sched_priority
-	priority std.Int
-}
-
-// schedSetscheduler sets both the scheduling policy and parameters for the
-// thread whose ID is specified in tid. If tid equals zero, the scheduling
-// policy and parameters of the calling thread will be set.
-//
-// This function is unexported because it is [very subtle to use correctly]. The
-// function signature in libc is misleading: pid actually refers to a thread ID.
-// The glibc wrapper for this system call ignores this semantic and exposes
-// this counterintuitive behaviour.
-//
-// This function is only called from the container setup thread. Do not reuse
-// this if you do not have something similar in place!
-//
-// [very subtle to use correctly]: https://www.openwall.com/lists/musl/2016/03/01/4
-func schedSetscheduler(tid, policy int, param *schedParam) error {
-	if r, _, errno := Syscall(
-		SYS_SCHED_SETSCHEDULER,
-		uintptr(tid),
-		uintptr(policy),
-		uintptr(unsafe.Pointer(param)),
-	); r < 0 {
-		return errno
-	}
-	return nil
-}
-
 // IgnoringEINTR makes a function call and repeats it if it returns an
 // EINTR error. This appears to be required even though we install all
 // signal handlers with SA_RESTART: see #22838, #38033, #38836, #40846.

container/vfs/mangle.go

@@ -2,8 +2,6 @@ package vfs
 
 import "strings"
 
-// Unmangle reverses mangling of strings done by the kernel. Its behaviour is
-// consistent with the equivalent function in util-linux.
 func Unmangle(s string) string {
 	if !strings.ContainsRune(s, '\\') {
 		return s

container/vfs/mountinfo.go

@@ -24,7 +24,6 @@ var (
 	ErrMountInfoSep    = errors.New("bad optional fields separator")
 )
 
-// A DecoderError describes a nonrecoverable error decoding a mountinfo stream.
 type DecoderError struct {
 	Op   string
 	Line int
@@ -52,8 +51,7 @@ func (e *DecoderError) Error() string {
 }
 
 type (
-	// A MountInfoDecoder reads and decodes proc_pid_mountinfo(5) entries from
+	// A MountInfoDecoder reads and decodes proc_pid_mountinfo(5) entries from an input stream.
-	// an input stream.
 	MountInfoDecoder struct {
 		s *bufio.Scanner
 		m *MountInfo
@@ -74,16 +72,13 @@ type (
 	MountInfoEntry struct {
 		// mount ID: a unique ID for the mount (may be reused after umount(2)).
 		ID int `json:"id"`
-		// parent ID: the ID of the parent mount (or of self for the root of
+		// parent ID: the ID of the parent mount (or of self for the root of this mount namespace's mount tree).
-		// this mount namespace's mount tree).
 		Parent int `json:"parent"`
 		// major:minor: the value of st_dev for files on this filesystem (see stat(2)).
 		Devno DevT `json:"devno"`
-		// root: the pathname of the directory in the filesystem which forms the
+		// root: the pathname of the directory in the filesystem which forms the root of this mount.
-		// root of this mount.
 		Root string `json:"root"`
-		// mount point: the pathname of the mount point relative to the
+		// mount point: the pathname of the mount point relative to the process's root directory.
-		// process's root directory.
 		Target string `json:"target"`
 		// mount options: per-mount options (see mount(2)).
 		VfsOptstr string `json:"vfs_optstr"`
@@ -131,8 +126,7 @@ func (e *MountInfoEntry) Flags() (flags uintptr, unmatched []string) {
 
 // NewMountInfoDecoder returns a new decoder that reads from r.
 //
-// The decoder introduces its own buffering and may read data from r beyond the
+// The decoder introduces its own buffering and may read data from r beyond the mountinfo entries requested.
-// mountinfo entries requested.
 func NewMountInfoDecoder(r io.Reader) *MountInfoDecoder {
 	return &MountInfoDecoder{s: bufio.NewScanner(r)}
 }
@@ -277,8 +271,6 @@ func parseMountInfoLine(s string, ent *MountInfoEntry) error {
 	return nil
 }
 
-// EqualWithIgnore compares to [MountInfoEntry] values, ignoring fields that
-// compare equal to ignore.
 func (e *MountInfoEntry) EqualWithIgnore(want *MountInfoEntry, ignore string) bool {
 	return (e.ID == want.ID || want.ID == -1) &&
 		(e.Parent == want.Parent || want.Parent == -1) &&
@@ -292,8 +284,6 @@ func (e *MountInfoEntry) EqualWithIgnore(want *MountInfoEntry, ignore string) bo
 		(e.FsOptstr == want.FsOptstr || want.FsOptstr == ignore)
 }
 
-// String returns a user-facing representation of a [MountInfoEntry]. It fits
-// roughly into the mountinfo format, but without mangling.
 func (e *MountInfoEntry) String() string {
 	return fmt.Sprintf("%d %d %d:%d %s %s %s %s %s %s %s",
 		e.ID, e.Parent, e.Devno[0], e.Devno[1], e.Root, e.Target, e.VfsOptstr,

container/vfs/unfold.go

@@ -6,7 +6,6 @@ import (
 	"strings"
 )
 
-// UnfoldTargetError is a pathname that never appeared in a mount hierarchy.
 type UnfoldTargetError string
 
 func (e UnfoldTargetError) Error() string {
@@ -28,7 +27,6 @@ func (n *MountInfoNode) Collective() iter.Seq[*MountInfoNode] {
 	return func(yield func(*MountInfoNode) bool) { n.visit(yield) }
 }
 
-// visit recursively visits all visible mountinfo nodes.
 func (n *MountInfoNode) visit(yield func(*MountInfoNode) bool) bool {
 	if !n.Covered && !yield(n) {
 		return false

dist/release.sh

@@ -13,7 +13,7 @@ echo
 echo '# Building hakurei.'
 go generate ./...
 go build -trimpath -v -o "${out}/bin/" -ldflags "-s -w
-  -buildid= -linkmode external -extldflags=-static
+  -buildid= -extldflags '-static'
   -X hakurei.app/internal/info.buildVersion=${VERSION}
   -X hakurei.app/internal/info.hakureiPath=/usr/bin/hakurei
   -X hakurei.app/internal/info.hsuPath=/usr/bin/hsu
@@ -21,7 +21,7 @@ go build -trimpath -v -o "${out}/bin/" -ldflags "-s -w
 echo
 
 echo '# Testing hakurei.'
-go test -ldflags='-buildid= -linkmode external -extldflags=-static' ./...
+go test -ldflags='-buildid= -extldflags=-static' ./...
 echo
 
 echo '# Creating distribution.'

flake.nix

@@ -29,6 +29,20 @@
     {
       nixosModules.hakurei = import ./nixos.nix self.packages;
 
+      buildPackage = forAllSystems (
+        system:
+        nixpkgsFor.${system}.callPackage (
+          import ./cmd/hpkg/build.nix {
+            inherit
+              nixpkgsFor
+              system
+              nixpkgs
+              home-manager
+              ;
+          }
+        )
+      );
+
       checks = forAllSystems (
         system:
         let
@@ -57,6 +71,8 @@
 
           sharefs = callPackage ./cmd/sharefs/test { inherit system self; };
 
+          hpkg = callPackage ./cmd/hpkg/test { inherit system self; };
+
           formatting = runCommandLocal "check-formatting" { nativeBuildInputs = [ nixfmt-rfc-style ]; } ''
             cd ${./.}
 
@@ -111,6 +127,11 @@
               glibc
               xdg-dbus-proxy
 
+              # hpkg
+              zstd
+              gnutar
+              coreutils
+
               # for check
               util-linux
               nettools
@@ -198,7 +219,7 @@
                   ./test/interactive/trace.nix
 
                   self.nixosModules.hakurei
-                  home-manager.nixosModules.home-manager
+                  self.inputs.home-manager.nixosModules.home-manager
                 ];
               };
             in

internal/azalea/azalea.go

@@ -1,69 +0,0 @@
-//go:generate gocc -a azalea.bnf
-package azalea
-
-import (
-	"io"
-	"io/fs"
-	"os"
-	"path/filepath"
-	"strconv"
-	"strings"
-
-	"hakurei.app/container/check"
-)
-
-type Parser struct {
-	Generator
-}
-
-func NewParser(gen Generator) *Parser {
-	return &Parser{
-		Generator: gen,
-	}
-}
-func (p Parser) Initialise() {
-
-}
-
-func (p Parser) Consume(ns string, file io.Reader) error {
-	return nil
-}
-
-// ConsumeDir walks a directory and consumes all Azalea source files within it and all its subdirectories, as long as they end with the .az extension.
-func (p Parser) ConsumeDir(dir *check.Absolute) error {
-	ds := dir.String()
-	return filepath.WalkDir(ds, func(path string, d fs.DirEntry, err error) (e error) {
-		if err != nil {
-			return err
-		}
-		if d.IsDir() || !strings.HasSuffix(d.Name(), ".az") {
-			return
-		}
-		rel, e := filepath.Rel(ds, path)
-		ns := strings.TrimSuffix(rel, ".az")
-		f, e := os.Open(path)
-		return p.Consume(ns, f)
-	})
-}
-
-// ConsumeAll consumes all provided readers as Azalea source code, each given the namespace `r%d` where `%d` is the index of the reader in the provided arguments.
-func (p Parser) ConsumeAll(in ...io.Reader) error {
-	for i, r := range in {
-		err := p.Consume("r"+strconv.FormatInt(int64(i), 10), r)
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// ConsumeStrings consumes all provided strings as Azalea source code, each given the namespace `s%d` where `%d` is the index of the string in the provided arugments.
-func (p Parser) ConsumeStrings(in ...string) error {
-	for i, s := range in {
-		err := p.Consume("s"+strconv.FormatInt(int64(i), 10), strings.NewReader(s))
-		if err != nil {
-			return err
-		}
-	}
-	return nil
-}

internal/azalea/generator.go

@@ -1,36 +0,0 @@
-package azalea
-
-import (
-	"io"
-)
-
-type Generator interface {
-	Finalise() (error, io.Writer)
-}
-
-type JsonGenerator struct {
-	t any
-}
-
-func NewJsonGenerator[T any]() JsonGenerator {
-	t := new(T)
-
-	return JsonGenerator{
-		t,
-	}
-}
-
-func (j *JsonGenerator) Finalise() (error, io.Writer) {
-
-}
-
-type PkgIRGenerator struct {
-}
-
-func NewPkgIRGenerator() PkgIRGenerator {
-	return PkgIRGenerator{}
-}
-
-func (p *PkgIRGenerator) Finalise() (error, io.Writer) {
-
-}

internal/lockedfile/internal/filelock/filelock.go

@@ -8,6 +8,7 @@
 package filelock
 
 import (
+	"errors"
 	"io/fs"
 )
 
@@ -73,3 +74,10 @@ func (lt lockType) String() string {
 		return "Unlock"
 	}
 }
+
+// IsNotSupported returns a boolean indicating whether the error is known to
+// report that a function is not supported (possibly for a specific input).
+// It is satisfied by errors.ErrUnsupported as well as some syscall errors.
+func IsNotSupported(err error) bool {
+	return errors.Is(err, errors.ErrUnsupported)
+}

internal/lockedfile/internal/filelock/filelock_test.go

@@ -14,7 +14,7 @@ import (
 	"testing"
 	"time"
 
-	"hakurei.app/container/fhs"
+	"hakurei.app/container"
 	"hakurei.app/internal/lockedfile/internal/filelock"
 	"hakurei.app/internal/lockedfile/internal/testexec"
 )
@@ -197,7 +197,7 @@ func TestLockNotDroppedByExecCommand(t *testing.T) {
 	// Some kinds of file locks are dropped when a duplicated or forked file
 	// descriptor is unlocked. Double-check that the approach used by os/exec does
 	// not accidentally drop locks.
-	cmd := testexec.CommandContext(t, t.Context(), fhs.ProcSelfExe, "-test.run=^$")
+	cmd := testexec.CommandContext(t, t.Context(), container.MustExecutable(nil), "-test.run=^$")
 	if err := cmd.Run(); err != nil {
 		t.Fatalf("exec failed: %v", err)
 	}

internal/lockedfile/lockedfile.go

@@ -94,11 +94,6 @@ func (f *File) Close() error {
 
 	err := closeFile(f.osFile.File)
 	f.cleanup.Stop()
-	// f may be dead at the moment after we access f.cleanup,
-	// so the cleanup can fire before Stop completes. Keep f
-	// alive while we call Stop. See the documentation for
-	// runtime.Cleanup.Stop.
-	runtime.KeepAlive(f)
 	return err
 }
 

internal/lockedfile/lockedfile_test.go

@@ -15,7 +15,7 @@ import (
 	"testing"
 	"time"
 
-	"hakurei.app/container/fhs"
+	"hakurei.app/container"
 	"hakurei.app/internal/lockedfile"
 	"hakurei.app/internal/lockedfile/internal/testexec"
 )
@@ -215,7 +215,7 @@ func TestSpuriousEDEADLK(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	cmd := testexec.CommandContext(t, t.Context(), fhs.ProcSelfExe, "-test.run=^"+t.Name()+"$")
+	cmd := testexec.CommandContext(t, t.Context(), container.MustExecutable(nil), "-test.run=^"+t.Name()+"$")
 	cmd.Env = append(os.Environ(), fmt.Sprintf("%s=%s", dirVar, dir))
 
 	qDone := make(chan struct{})

internal/pkg/asm.go

@@ -0,0 +1,216 @@
+package pkg
+
+import (
+	"encoding/binary"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+)
+
+type asmOutLine struct {
+	pos       int
+	word      int
+	kindData  int64
+	valueData []byte
+	indent    int
+	kind      string
+	value     string
+}
+
+var spacingLine = asmOutLine{
+	pos:       -1,
+	kindData:  -1,
+	valueData: nil,
+	indent:    0,
+	kind:      "",
+	value:     "",
+}
+
+func Disassemble(r io.Reader, real bool, showHeader bool, force bool, raw bool) (s string, err error) {
+	var lines []asmOutLine
+	sb := new(strings.Builder)
+	header := true
+	pos := new(int)
+
+	for err == nil {
+		if header {
+			var kind uint64
+			var size uint64
+			var bsize []byte
+			p := *pos
+			if _, kind, err = nextUint64(r, pos); err != nil {
+				break
+			}
+			if bsize, size, err = nextUint64(r, pos); err != nil {
+				break
+			}
+			if showHeader {
+				lines = append(lines, asmOutLine{p, 8, int64(kind), bsize, 0, "head  " + intToKind(kind), ""})
+			}
+			for i := 0; uint64(i) < size; i++ {
+				var did Checksum
+				var dkind uint64
+				p := *pos
+				if _, dkind, err = nextUint64(r, pos); err != nil {
+					break
+				}
+				if _, did, err = nextIdent(r, pos); err != nil {
+					break
+				}
+				if showHeader {
+					lines = append(lines, asmOutLine{p, 8, int64(dkind), nil, 1, intToKind(dkind), Encode(did)})
+				}
+			}
+			header = false
+		}
+		var k uint32
+		p := *pos
+		if _, k, err = nextUint32(r, pos); err != nil {
+			break
+		}
+		kind := IRValueKind(k)
+		switch kind {
+		case IRKindEnd:
+			var a uint32
+			var ba []byte
+			if ba, a, err = nextUint32(r, pos); err != nil {
+				break
+			}
+			if a&1 != 0 {
+				var sum Checksum
+				if _, sum, err = nextIdent(r, pos); err != nil {
+					break
+				}
+				lines = append(lines, asmOutLine{p, 4, int64(kind), ba, 1, "end ", Encode(sum)})
+			} else {
+				lines = append(lines, asmOutLine{p, 4, int64(kind), []byte{0, 0, 0, 0}, 1, "end ", ""})
+			}
+			lines = append(lines, spacingLine)
+			header = true
+			continue
+
+		case IRKindIdent:
+			var a []byte
+			// discard ancillary
+			if a, _, err = nextUint32(r, pos); err != nil {
+				break
+			}
+			var sum Checksum
+			if _, sum, err = nextIdent(r, pos); err != nil {
+				break
+			}
+
+			lines = append(lines, asmOutLine{p, 4, int64(kind), a, 1, "id  ", Encode(sum)})
+			continue
+		case IRKindUint32:
+			var i uint32
+			var bi []byte
+			if bi, i, err = nextUint32(r, pos); err != nil {
+				break
+			}
+			lines = append(lines, asmOutLine{p, 4, int64(kind), bi, 1, "int ", strconv.FormatUint(uint64(i), 10)})
+		case IRKindString:
+			var l uint32
+			var bl []byte
+			if bl, l, err = nextUint32(r, pos); err != nil {
+				break
+			}
+			s := make([]byte, l+(wordSize-(l)%wordSize)%wordSize)
+			var n int
+			if n, err = r.Read(s); err != nil {
+				break
+			}
+			*pos = *pos + n
+
+			lines = append(lines, asmOutLine{p, 4, int64(kind), bl, 1, "str ", strconv.Quote(string(s[:l]))})
+			continue
+		default:
+			var bi []byte
+			if bi, _, err = nextUint32(r, pos); err != nil {
+				break
+			}
+			lines = append(lines, asmOutLine{p, 4, int64(kind), bi, 1, "????", ""})
+		}
+	}
+	if err != io.EOF {
+		return
+	}
+	err = nil
+	for _, line := range lines {
+		if raw {
+			if line.pos != -1 {
+				sb.WriteString(fmt.Sprintf("%s\t%s\n", line.kind, line.value))
+			}
+		} else {
+			if line.pos == -1 {
+				sb.WriteString("\n")
+			} else if line.word == 4 {
+				sb.WriteString(fmt.Sprintf("%06x:  %04x %04x%s          %s  %s\n", line.pos, binary.LittleEndian.AppendUint32(nil, uint32(line.kindData)), line.valueData, headerSpacing(showHeader), line.kind, line.value))
+			} else {
+				kind := binary.LittleEndian.AppendUint64(nil, uint64(line.kindData))
+				value := line.valueData
+				if len(value) == 8 {
+					sb.WriteString(fmt.Sprintf("%06x:  %04x %04x %04x %04x      %s  %s\n", line.pos, kind[:4], kind[4:], value[:4], value[4:], line.kind, line.value))
+				} else {
+					sb.WriteString(fmt.Sprintf("%06x:  %04x %04x                        %s  %s\n", line.pos, kind[:4], kind[4:], line.kind, line.value))
+				}
+
+			}
+		}
+
+	}
+	return sb.String(), err
+}
+func nextUint32(r io.Reader, pos *int) ([]byte, uint32, error) {
+	i := make([]byte, 4)
+	_, err := r.Read(i)
+	if err != nil {
+		return i, 0, err
+	}
+	p := *pos + 4
+	*pos = p
+	return i, binary.LittleEndian.Uint32(i), nil
+}
+func nextUint64(r io.Reader, pos *int) ([]byte, uint64, error) {
+	i := make([]byte, 8)
+	_, err := r.Read(i)
+	if err != nil {
+		return i, 0, err
+	}
+	p := *pos + 8
+	*pos = p
+	return i, binary.LittleEndian.Uint64(i), nil
+}
+func nextIdent(r io.Reader, pos *int) ([]byte, Checksum, error) {
+	i := make([]byte, 48)
+	if _, err := r.Read(i); err != nil {
+		return i, Checksum{}, err
+	}
+	p := *pos + 48
+	*pos = p
+	return i, Checksum(i), nil
+}
+func intToKind(i uint64) string {
+	switch Kind(i) {
+	case KindHTTPGet:
+		return "http"
+	case KindTar:
+		return "tar "
+	case KindExec:
+		return "exec"
+	case KindExecNet:
+		return "exen"
+	case KindFile:
+		return "file"
+	default:
+		return fmt.Sprintf("$%d  ", i-KindCustomOffset)
+	}
+}
+func headerSpacing(showHeader bool) string {
+	if showHeader {
+		return "              "
+	}
+
+	return ""
+}

internal/pkg/exec.go

@@ -23,7 +23,7 @@ import (
 	"hakurei.app/message"
 )
 
-// AbsWork is the container pathname [TContext.GetWorkDir] is mounted on.
+// AbsWork is the container pathname [CureContext.GetWorkDir] is mounted on.
 var AbsWork = fhs.AbsRoot.Append("work/")
 
 // ExecPath is a slice of [Artifact] and the [check.Absolute] pathname to make
@@ -39,23 +39,22 @@ type ExecPath struct {
 	W bool
 }
 
-// SchedPolicy is the [container] scheduling policy.
+// layers returns pathnames collected from A deduplicated by checksum.
-var SchedPolicy int
+func (p *ExecPath) layers(f *FContext) []*check.Absolute {
+	msg := f.GetMessage()
 
-// PromoteLayers returns artifacts with identical-by-content layers promoted to
+	layers := make([]*check.Absolute, 0, len(p.A))
-// the highest priority instance, as if mounted via [ExecPath].
+	checksums := make(map[unique.Handle[Checksum]]struct{}, len(p.A))
-func PromoteLayers(
+	for i := range p.A {
-	artifacts []Artifact,
+		d := p.A[len(p.A)-1-i]
-	getArtifact func(Artifact) (*check.Absolute, unique.Handle[Checksum]),
+		pathname, checksum := f.GetArtifact(d)
-	report func(i int, d Artifact),
-) []*check.Absolute {
-	layers := make([]*check.Absolute, 0, len(artifacts))
-	checksums := make(map[unique.Handle[Checksum]]struct{}, len(artifacts))
-	for i := range artifacts {
-		d := artifacts[len(artifacts)-1-i]
-		pathname, checksum := getArtifact(d)
 		if _, ok := checksums[checksum]; ok {
-			report(len(artifacts)-1-i, d)
+			if msg.IsVerbose() {
+				msg.Verbosef(
+					"promoted layer %d as %s",
+					len(p.A)-1-i, reportName(d, f.cache.Ident(d)),
+				)
+			}
 			continue
 		}
 		checksums[checksum] = struct{}{}
@@ -65,19 +64,6 @@ func PromoteLayers(
 	return layers
 }
 
-// layers returns pathnames collected from A deduplicated via [PromoteLayers].
-func (p *ExecPath) layers(f *FContext) []*check.Absolute {
-	msg := f.GetMessage()
-	return PromoteLayers(p.A, f.GetArtifact, func(i int, d Artifact) {
-		if msg.IsVerbose() {
-			msg.Verbosef(
-				"promoted layer %d as %s",
-				i, reportName(d, f.cache.Ident(d)),
-			)
-		}
-	})
-}
-
 // Path returns a populated [ExecPath].
 func Path(pathname *check.Absolute, writable bool, a ...Artifact) ExecPath {
 	return ExecPath{pathname, a, writable}
@@ -361,7 +347,6 @@ const (
 // scanVerbose prefixes program output for a verbose [message.Msg].
 func scanVerbose(
 	msg message.Msg,
-	cancel context.CancelFunc,
 	done chan<- struct{},
 	prefix string,
 	r io.Reader,
@@ -376,15 +361,10 @@ func scanVerbose(
 		msg.Verbose(prefix, s.Text())
 	}
 	if err := s.Err(); err != nil && !errors.Is(err, os.ErrClosed) {
-		cancel()
 		msg.Verbose("*"+prefix, err)
 	}
 }
 
-// SeccompPresets is the [seccomp] presets used by exec artifacts.
-const SeccompPresets = std.PresetStrict &
-	^(std.PresetDenyNS | std.PresetDenyDevel)
-
 // cure is like Cure but allows optional host net namespace. This is used for
 // the [KnownChecksum] variant where networking is allowed.
 func (a *execArtifact) cure(f *FContext, hostNet bool) (err error) {
@@ -408,22 +388,15 @@ func (a *execArtifact) cure(f *FContext, hostNet bool) (err error) {
 
 	z := container.New(ctx, f.GetMessage())
 	z.WaitDelay = execWaitDelay
-	z.SeccompPresets = SeccompPresets
+	z.SeccompPresets |= std.PresetStrict & ^std.PresetDenyNS
 	z.SeccompFlags |= seccomp.AllowMultiarch
 	z.ParentPerm = 0700
 	z.HostNet = hostNet
 	z.Hostname = "cure"
-	z.SchedPolicy = SchedPolicy
 	if z.HostNet {
 		z.Hostname = "cure-net"
 	}
 	z.Uid, z.Gid = (1<<10)-1, (1<<10)-1
-
-	var status io.Writer
-	if status, err = f.GetStatusWriter(); err != nil {
-		return
-	}
-
 	if msg := f.GetMessage(); msg.IsVerbose() {
 		var stdout, stderr io.ReadCloser
 		if stdout, err = z.StdoutPipe(); err != nil {
@@ -440,31 +413,10 @@ func (a *execArtifact) cure(f *FContext, hostNet bool) (err error) {
 			}
 		}()
 
-		bw := f.cache.getWriter(status)
 		stdoutDone, stderrDone := make(chan struct{}), make(chan struct{})
-		go scanVerbose(
+		go scanVerbose(msg, stdoutDone, "("+a.name+":1)", stdout)
-			msg, cancel, stdoutDone,
+		go scanVerbose(msg, stderrDone, "("+a.name+":2)", stderr)
-			"("+a.name+":1)",
+		defer func() { <-stdoutDone; <-stderrDone }()
-			io.TeeReader(stdout, bw),
-		)
-		go scanVerbose(
-			msg, cancel, stderrDone,
-			"("+a.name+":2)",
-			io.TeeReader(stderr, bw),
-		)
-		defer func() {
-			<-stdoutDone
-			<-stderrDone
-
-			flushErr := bw.Flush()
-			if err == nil {
-				err = flushErr
-			}
-			f.cache.putWriter(bw)
-
-		}()
-	} else {
-		z.Stdout, z.Stderr = status, status
 	}
 
 	z.Dir, z.Env, z.Path, z.Args = a.dir, a.env, a.path, a.args

internal/pkg/ir.go

@@ -150,7 +150,7 @@ func (i *IContext) WriteUint32(v uint32) {
 }
 
 // irMaxStringLength is the maximum acceptable wire size of [IRKindString].
-const irMaxStringLength = 1 << 24
+const irMaxStringLength = 1 << 20
 
 // IRStringError is a string value too big to encode in IR.
 type IRStringError string
@@ -310,13 +310,6 @@ type (
 	// verbose logging is enabled. Artifacts may only depend on artifacts
 	// previously described in the IR stream.
 	//
-	// IRDecoder rejects an IR stream on the first decoding error, it does not
-	// check against nonzero reserved ancillary data or incorrectly ordered or
-	// redundant unstructured dependencies. An invalid IR stream as such will
-	// yield [Artifact] values with identifiers disagreeing with those computed
-	// by IRDecoder. For this reason, IRDecoder does not access the ident cache
-	// to avoid putting [Cache] into an inconsistent state.
-	//
 	// Methods of IRDecoder are not safe for concurrent use.
 	IRDecoder struct {
 		// Address of underlying [Cache], must not be exposed directly.

internal/pkg/pkg.go

@@ -28,21 +28,15 @@ import (
 	"unsafe"
 
 	"hakurei.app/container/check"
-	"hakurei.app/internal/info"
 	"hakurei.app/internal/lockedfile"
 	"hakurei.app/message"
 )
 
-const (
-	// programName is the string identifying this build system.
-	programName = "internal/pkg"
-)
-
 type (
 	// A Checksum is a SHA-384 checksum computed for a cured [Artifact].
 	Checksum = [sha512.Size384]byte
 
-	// An ID is a unique identifier returned by [KnownIdent.ID]. This value must
+	// An ID is a unique identifier returned by [Artifact.ID]. This value must
 	// be deterministically determined ahead of time.
 	ID Checksum
 )
@@ -71,75 +65,18 @@ func MustDecode(s string) (checksum Checksum) {
 	return
 }
 
-// common holds elements and receives methods shared between different contexts.
-type common struct {
-	// Address of underlying [Cache], should be zeroed or made unusable after
-	// Cure returns and must not be exposed directly.
-	cache *Cache
-}
-
 // TContext is passed to [TrivialArtifact.Cure] and provides information and
 // methods required for curing the [TrivialArtifact].
 //
 // Methods of TContext are safe for concurrent use. TContext is valid
 // until [TrivialArtifact.Cure] returns.
 type TContext struct {
+	// Address of underlying [Cache], should be zeroed or made unusable after
+	// [TrivialArtifact.Cure] returns and must not be exposed directly.
+	cache *Cache
+
 	// Populated during [Cache.Cure].
 	work, temp *check.Absolute
-
-	// Target [Artifact] encoded identifier.
-	ids string
-	// Pathname status was created at.
-	statusPath *check.Absolute
-	// File statusHeader and logs are written to.
-	status *os.File
-	// Error value during prepareStatus.
-	statusErr error
-
-	common
-}
-
-// statusHeader is the header written to all status files in dirStatus.
-var statusHeader = func() string {
-	s := programName
-	if v := info.Version(); v != info.FallbackVersion {
-		s += " " + v
-	}
-	s += " (" + runtime.GOARCH + ")"
-	if name, err := os.Hostname(); err == nil {
-		s += " on " + name
-	}
-	s += "\n\n"
-	return s
-}()
-
-// prepareStatus initialises the status file once.
-func (t *TContext) prepareStatus() error {
-	if t.statusPath != nil || t.status != nil {
-		return t.statusErr
-	}
-
-	t.statusPath = t.cache.base.Append(
-		dirStatus,
-		t.ids,
-	)
-	if t.status, t.statusErr = os.OpenFile(
-		t.statusPath.String(),
-		syscall.O_CREAT|syscall.O_EXCL|syscall.O_WRONLY,
-		0400,
-	); t.statusErr != nil {
-		return t.statusErr
-	}
-
-	_, t.statusErr = t.status.WriteString(statusHeader)
-	return t.statusErr
-}
-
-// GetStatusWriter returns a [io.Writer] for build logs. The caller must not
-// seek this writer before the position it was first returned in.
-func (t *TContext) GetStatusWriter() (io.Writer, error) {
-	err := t.prepareStatus()
-	return t.status, err
 }
 
 // destroy destroys the temporary directory and joins its errors with the error
@@ -147,15 +84,12 @@ func (t *TContext) GetStatusWriter() (io.Writer, error) {
 // directory is removed similarly. [Cache] is responsible for making sure work
 // is never left behind for a successful [Cache.Cure].
 //
-// If implementation had requested status, it is closed with error joined with
-// the error referred to by errP. If the error referred to by errP is non-nil,
-// the status file is removed from the filesystem.
-//
 // destroy must be deferred by [Cache.Cure] if [TContext] is passed to any Cure
 // implementation. It should not be called prior to that point.
 func (t *TContext) destroy(errP *error) {
 	if chmodErr, removeErr := removeAll(t.temp); chmodErr != nil || removeErr != nil {
 		*errP = errors.Join(*errP, chmodErr, removeErr)
+		return
 	}
 
 	if *errP != nil {
@@ -163,31 +97,17 @@ func (t *TContext) destroy(errP *error) {
 		if chmodErr != nil || removeErr != nil {
 			*errP = errors.Join(*errP, chmodErr, removeErr)
 		} else if errors.Is(*errP, os.ErrExist) {
-			var linkError *os.LinkError
-			if errors.As(*errP, &linkError) && linkError != nil &&
-				linkError.Op == "rename" {
 			// two artifacts may be backed by the same file
 			*errP = nil
 		}
 	}
 }
 
-	if t.status != nil {
-		if err := t.status.Close(); err != nil {
-			*errP = errors.Join(*errP, err)
-		}
-		if *errP != nil {
-			*errP = errors.Join(*errP, os.Remove(t.statusPath.String()))
-		}
-		t.status = nil
-	}
-}
-
 // Unwrap returns the underlying [context.Context].
-func (c *common) Unwrap() context.Context { return c.cache.ctx }
+func (t *TContext) Unwrap() context.Context { return t.cache.ctx }
 
 // GetMessage returns [message.Msg] held by the underlying [Cache].
-func (c *common) GetMessage() message.Msg { return c.cache.msg }
+func (t *TContext) GetMessage() message.Msg { return t.cache.msg }
 
 // GetWorkDir returns a pathname to a directory which [Artifact] is expected to
 // write its output to. This is not the final resting place of the [Artifact]
@@ -206,13 +126,13 @@ func (t *TContext) GetTempDir() *check.Absolute { return t.temp }
 // If err is nil, the caller must close the resulting [io.ReadCloser] and return
 // its error, if any. Failure to read r to EOF may result in a spurious
 // [ChecksumMismatchError], or the underlying implementation may block on Close.
-func (c *common) Open(a Artifact) (r io.ReadCloser, err error) {
+func (t *TContext) Open(a Artifact) (r io.ReadCloser, err error) {
 	if f, ok := a.(FileArtifact); ok {
-		return c.cache.openFile(f)
+		return t.cache.openFile(f)
 	}
 
 	var pathname *check.Absolute
-	if pathname, _, err = c.cache.Cure(a); err != nil {
+	if pathname, _, err = t.cache.Cure(a); err != nil {
 		return
 	}
 
@@ -244,7 +164,7 @@ type FContext struct {
 }
 
 // InvalidLookupError is the identifier of non-dependency [Artifact] looked up
-// via [FContext.GetArtifact] by a misbehaving [Artifact] implementation.
+// via [FContext.Pathname] by a misbehaving [Artifact] implementation.
 type InvalidLookupError ID
 
 func (e InvalidLookupError) Error() string {
@@ -271,7 +191,14 @@ func (f *FContext) GetArtifact(a Artifact) (
 //
 // Methods of RContext are safe for concurrent use. RContext is valid
 // until [FileArtifact.Cure] returns.
-type RContext struct{ common }
+type RContext struct {
+	// Address of underlying [Cache], should be zeroed or made unusable after
+	// [FileArtifact.Cure] returns and must not be exposed directly.
+	cache *Cache
+}
+
+// Unwrap returns the underlying [context.Context].
+func (r *RContext) Unwrap() context.Context { return r.cache.ctx }
 
 // An Artifact is a read-only reference to a piece of data that may be created
 // deterministically but might not currently be available in memory or on the
@@ -450,9 +377,6 @@ const (
 	// dirChecksum is the directory name appended to Cache.base for storing
 	// artifacts named after their [Checksum].
 	dirChecksum = "checksum"
-	// dirStatus is the directory name appended to Cache.base for storing
-	// artifact metadata and logs named after their [ID].
-	dirStatus = "status"
 
 	// dirWork is the directory name appended to Cache.base for working
 	// pathnames set up during [Cache.Cure].
@@ -542,7 +466,7 @@ type Cache struct {
 	// Synchronises entry into exclusive artifacts for the cure method.
 	exclMu sync.Mutex
 	// Buffered I/O free list, must not be accessed directly.
-	brPool, bwPool sync.Pool
+	bufioPool sync.Pool
 
 	// Unlocks the on-filesystem cache. Must only be called from Close.
 	unlock func()
@@ -624,26 +548,6 @@ func (c *Cache) unsafeIdent(a Artifact, encodeKind bool) (
 	return
 }
 
-// getReader is like [bufio.NewReader] but for brPool.
-func (c *Cache) getReader(r io.Reader) *bufio.Reader {
-	br := c.brPool.Get().(*bufio.Reader)
-	br.Reset(r)
-	return br
-}
-
-// putReader adds br to brPool.
-func (c *Cache) putReader(br *bufio.Reader) { c.brPool.Put(br) }
-
-// getWriter is like [bufio.NewWriter] but for bwPool.
-func (c *Cache) getWriter(w io.Writer) *bufio.Writer {
-	bw := c.bwPool.Get().(*bufio.Writer)
-	bw.Reset(w)
-	return bw
-}
-
-// putWriter adds bw to bwPool.
-func (c *Cache) putWriter(bw *bufio.Writer) { c.bwPool.Put(bw) }
-
 // A ChecksumMismatchError describes an [Artifact] with unexpected content.
 type ChecksumMismatchError struct {
 	// Actual and expected checksums.
@@ -665,9 +569,6 @@ type ScrubError struct {
 	// Dangling identifier symlinks. This can happen if the content-addressed
 	// entry was removed while scrubbing due to a checksum mismatch.
 	DanglingIdentifiers []ID
-	// Dangling status files. This can happen if a dangling status symlink was
-	// removed while scrubbing.
-	DanglingStatus []ID
 	// Miscellaneous errors, including [os.ReadDir] on checksum and identifier
 	// directories, [Decode] on entry names and [os.RemoveAll] on inconsistent
 	// entries.
@@ -719,13 +620,6 @@ func (e *ScrubError) Error() string {
 		}
 		segments = append(segments, s)
 	}
-	if len(e.DanglingStatus) > 0 {
-		s := "dangling status:\n"
-		for _, id := range e.DanglingStatus {
-			s += Encode(id) + "\n"
-		}
-		segments = append(segments, s)
-	}
 	if len(e.Errs) > 0 {
 		s := "errors during scrub:\n"
 		for pathname, errs := range e.errs {
@@ -904,36 +798,6 @@ func (c *Cache) Scrub(checks int) error {
 		wg.Wait()
 	}
 
-	dir = c.base.Append(dirStatus)
-	if entries, readdirErr := os.ReadDir(dir.String()); readdirErr != nil {
-		if !errors.Is(readdirErr, os.ErrNotExist) {
-			addErr(dir, readdirErr)
-		}
-	} else {
-		wg.Add(len(entries))
-		for _, ent := range entries {
-			w <- checkEntry{ent, func(ent os.DirEntry, want *Checksum) bool {
-				got := p.Get().(*Checksum)
-				defer p.Put(got)
-
-				if _, err := os.Stat(c.base.Append(
-					dirIdentifier,
-					ent.Name(),
-				).String()); err != nil {
-					if !errors.Is(err, os.ErrNotExist) {
-						addErr(dir.Append(ent.Name()), err)
-					}
-					seMu.Lock()
-					se.DanglingStatus = append(se.DanglingStatus, *want)
-					seMu.Unlock()
-					return false
-				}
-				return true
-			}}
-		}
-		wg.Wait()
-	}
-
 	if len(c.identPending) > 0 {
 		addErr(c.base, errors.New(
 			"scrub began with pending artifacts",
@@ -964,7 +828,6 @@ func (c *Cache) Scrub(checks int) error {
 
 	if len(se.ChecksumMismatches) > 0 ||
 		len(se.DanglingIdentifiers) > 0 ||
-		len(se.DanglingStatus) > 0 ||
 		len(se.Errs) > 0 {
 		slices.SortFunc(se.ChecksumMismatches, func(a, b ChecksumMismatchError) int {
 			return bytes.Compare(a.Want[:], b.Want[:])
@@ -972,9 +835,6 @@ func (c *Cache) Scrub(checks int) error {
 		slices.SortFunc(se.DanglingIdentifiers, func(a, b ID) int {
 			return bytes.Compare(a[:], b[:])
 		})
-		slices.SortFunc(se.DanglingStatus, func(a, b ID) int {
-			return bytes.Compare(a[:], b[:])
-		})
 		return &se
 	} else {
 		return nil
@@ -1065,17 +925,16 @@ func (c *Cache) openFile(f FileArtifact) (r io.ReadCloser, err error) {
 		if !errors.Is(err, os.ErrNotExist) {
 			return
 		}
-		id := c.Ident(f)
 		if c.msg.IsVerbose() {
-			rn := reportName(f, id)
+			rn := reportName(f, c.Ident(f))
-			c.msg.Verbosef("curing %s in memory...", rn)
+			c.msg.Verbosef("curing %s to memory...", rn)
 			defer func() {
 				if err == nil {
-					c.msg.Verbosef("opened %s for reading", rn)
+					c.msg.Verbosef("cured %s to memory", rn)
 				}
 			}()
 		}
-		return f.Cure(&RContext{common{c}})
+		return f.Cure(&RContext{c})
 	}
 	return
 }
@@ -1272,9 +1131,6 @@ type DependencyCureError []*CureError
 // unwrapM recursively expands underlying errors into a caller-supplied map.
 func (e *DependencyCureError) unwrapM(me map[unique.Handle[ID]]*CureError) {
 	for _, err := range *e {
-		if _, ok := me[err.Ident]; ok {
-			continue
-		}
 		if _e, ok := err.Err.(*DependencyCureError); ok {
 			_e.unwrapM(me)
 			continue
@@ -1358,6 +1214,13 @@ func (c *Cache) exitCure(a Artifact, curesExempt bool) {
 	<-c.cures
 }
 
+// getWriter is like [bufio.NewWriter] but for bufioPool.
+func (c *Cache) getWriter(w io.Writer) *bufio.Writer {
+	bw := c.bufioPool.Get().(*bufio.Writer)
+	bw.Reset(w)
+	return bw
+}
+
 // measuredReader implements [io.ReadCloser] and measures the checksum during
 // Close. If the underlying reader is not read to EOF, Close blocks until all
 // remaining data is consumed and validated.
@@ -1440,6 +1303,9 @@ func (r *RContext) NewMeasuredReader(
 	return r.cache.newMeasuredReader(rc, checksum)
 }
 
+// putWriter adds bw to bufioPool.
+func (c *Cache) putWriter(bw *bufio.Writer) { c.bufioPool.Put(bw) }
+
 // cure implements Cure without checking the full dependency graph.
 func (c *Cache) cure(a Artifact, curesExempt bool) (
 	pathname *check.Absolute,
@@ -1571,7 +1437,7 @@ func (c *Cache) cure(a Artifact, curesExempt bool) (
 		if err = c.enterCure(a, curesExempt); err != nil {
 			return
 		}
-		r, err = f.Cure(&RContext{common{c}})
+		r, err = f.Cure(&RContext{c})
 		if err == nil {
 			if checksumPathname == nil || c.IsStrict() {
 				h := sha512.New384()
@@ -1647,12 +1513,7 @@ func (c *Cache) cure(a Artifact, curesExempt bool) (
 		return
 	}
 
-	t := TContext{
+	t := TContext{c, c.base.Append(dirWork, ids), c.base.Append(dirTemp, ids)}
-		c.base.Append(dirWork, ids),
-		c.base.Append(dirTemp, ids),
-		ids, nil, nil, nil,
-		common{c},
-	}
 	switch ca := a.(type) {
 	case TrivialArtifact:
 		defer t.destroy(&err)
@@ -1790,18 +1651,6 @@ func (pending *pendingArtifactDep) cure(c *Cache) {
 	pending.errsMu.Unlock()
 }
 
-// OpenStatus attempts to open the status file associated to an [Artifact]. If
-// err is nil, the caller must close the resulting reader.
-func (c *Cache) OpenStatus(a Artifact) (r io.ReadSeekCloser, err error) {
-	c.identMu.RLock()
-	r, err = os.Open(c.base.Append(
-		dirStatus,
-		Encode(c.Ident(a).Value())).String(),
-	)
-	c.identMu.RUnlock()
-	return
-}
-
 // Close cancels all pending cures and waits for them to clean up.
 func (c *Cache) Close() {
 	c.closeOnce.Do(func() {
@@ -1850,7 +1699,6 @@ func open(
 	for _, name := range []string{
 		dirIdentifier,
 		dirChecksum,
-		dirStatus,
 		dirWork,
 	} {
 		if err := os.MkdirAll(base.Append(name).String(), 0700); err != nil &&
@@ -1865,16 +1713,13 @@ func open(
 		msg:  msg,
 		base: base,
 
-		identPool: sync.Pool{New: func() any { return new(extIdent) }},
-
 		ident:        make(map[unique.Handle[ID]]unique.Handle[Checksum]),
 		identErr:     make(map[unique.Handle[ID]]error),
 		identPending: make(map[unique.Handle[ID]]<-chan struct{}),
-
-		brPool: sync.Pool{New: func() any { return new(bufio.Reader) }},
-		bwPool: sync.Pool{New: func() any { return new(bufio.Writer) }},
 	}
 	c.ctx, c.cancel = context.WithCancel(ctx)
+	c.identPool.New = func() any { return new(extIdent) }
+	c.bufioPool.New = func() any { return new(bufio.Writer) }
 
 	if lock || !testing.Testing() {
 		if unlock, err := lockedfile.MutexAt(

internal/pkg/pkg_test.go

@@ -314,11 +314,6 @@ func checkWithCache(t *testing.T, testCases []cacheTestCase) {
 				t.Fatal(err)
 			}
 
-			// destroy non-deterministic status files
-			if err := os.RemoveAll(base.Append("status").String()); err != nil {
-				t.Fatal(err)
-			}
-
 			var checksum pkg.Checksum
 			if err := pkg.HashDir(&checksum, base); err != nil {
 				t.Fatalf("HashDir: error = %v", err)
@@ -387,9 +382,6 @@ func cureMany(t *testing.T, c *pkg.Cache, steps []cureStep) {
 		} else if step.pathname != ignorePathname && !pathname.Is(step.pathname) {
 			t.Fatalf("Cure: pathname = %q, want %q", pathname, step.pathname)
 		} else if checksum != makeChecksumH(step.checksum) {
-			if checksum == (unique.Handle[pkg.Checksum]{}) {
-				checksum = unique.Make(pkg.Checksum{})
-			}
 			t.Fatalf(
 				"Cure: checksum = %s, want %s",
 				pkg.Encode(checksum.Value()), pkg.Encode(step.checksum),

internal/pkg/tar.go

@@ -10,7 +10,8 @@ import (
 	"io/fs"
 	"net/http"
 	"os"
-	"path"
+
+	"hakurei.app/container/check"
 )
 
 const (
@@ -99,6 +100,7 @@ func (e DisallowedTypeflagError) Error() string {
 
 // Cure cures the [Artifact], producing a directory located at work.
 func (a *tarArtifact) Cure(t *TContext) (err error) {
+	temp := t.GetTempDir()
 	var tr io.ReadCloser
 	if tr, err = t.Open(a.f); err != nil {
 		return
@@ -114,9 +116,7 @@ func (a *tarArtifact) Cure(t *TContext) (err error) {
 			err = closeErr
 		}
 	}(tr)
-	br := t.cache.getReader(tr)
+	tr = io.NopCloser(tr)
-	defer t.cache.putReader(br)
-	tr = io.NopCloser(br)
 
 	switch a.compression {
 	case TarUncompressed:
@@ -137,24 +137,14 @@ func (a *tarArtifact) Cure(t *TContext) (err error) {
 	}
 
 	type dirTargetPerm struct {
-		path string
+		path *check.Absolute
 		mode fs.FileMode
 	}
 	var madeDirectories []dirTargetPerm
 
-	if err = os.MkdirAll(t.GetTempDir().String(), 0700); err != nil {
+	if err = os.MkdirAll(temp.String(), 0700); err != nil {
 		return
 	}
-	var root *os.Root
-	if root, err = os.OpenRoot(t.GetTempDir().String()); err != nil {
-		return
-	}
-	defer func() {
-		closeErr := root.Close()
-		if err == nil {
-			err = closeErr
-		}
-	}()
 
 	var header *tar.Header
 	r := tar.NewReader(tr)
@@ -168,8 +158,9 @@ func (a *tarArtifact) Cure(t *TContext) (err error) {
 			}
 		}
 
+		pathname := temp.Append(header.Name)
 		if typeflag >= '0' && typeflag <= '9' && typeflag != tar.TypeDir {
-			if err = root.MkdirAll(path.Dir(header.Name), 0700); err != nil {
+			if err = os.MkdirAll(pathname.Dir().String(), 0700); err != nil {
 				return
 			}
 		}
@@ -177,8 +168,8 @@ func (a *tarArtifact) Cure(t *TContext) (err error) {
 		switch typeflag {
 		case tar.TypeReg:
 			var f *os.File
-			if f, err = root.OpenFile(
+			if f, err = os.OpenFile(
-				header.Name,
+				pathname.String(),
 				os.O_CREATE|os.O_EXCL|os.O_WRONLY,
 				header.FileInfo().Mode()&0500,
 			); err != nil {
@@ -193,29 +184,26 @@ func (a *tarArtifact) Cure(t *TContext) (err error) {
 			break
 
 		case tar.TypeLink:
-			if err = root.Link(
+			if err = os.Link(
-				header.Linkname,
+				temp.Append(header.Linkname).String(),
-				header.Name,
+				pathname.String(),
 			); err != nil {
 				return
 			}
 			break
 
 		case tar.TypeSymlink:
-			if err = root.Symlink(
+			if err = os.Symlink(header.Linkname, pathname.String()); err != nil {
-				header.Linkname,
-				header.Name,
-			); err != nil {
 				return
 			}
 			break
 
 		case tar.TypeDir:
 			madeDirectories = append(madeDirectories, dirTargetPerm{
-				path: header.Name,
+				path: pathname,
 				mode: header.FileInfo().Mode(),
 			})
-			if err = root.MkdirAll(header.Name, 0700); err != nil {
+			if err = os.MkdirAll(pathname.String(), 0700); err != nil {
 				return
 			}
 			break
@@ -232,7 +220,7 @@ func (a *tarArtifact) Cure(t *TContext) (err error) {
 	}
 	if err == nil {
 		for _, e := range madeDirectories {
-			if err = root.Chmod(e.path, e.mode&0500); err != nil {
+			if err = os.Chmod(e.path.String(), e.mode&0500); err != nil {
 				return
 			}
 		}
@@ -240,7 +228,6 @@ func (a *tarArtifact) Cure(t *TContext) (err error) {
 		return
 	}
 
-	temp := t.GetTempDir()
 	if err = os.Chmod(temp.String(), 0700); err != nil {
 		return
 	}

internal/rosa/acl.go

@@ -2,19 +2,18 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newAttr() (pkg.Artifact, string) {
+func (t Toolchain) newAttr() pkg.Artifact {
 	const (
 		version  = "2.5.2"
 		checksum = "YWEphrz6vg1sUMmHHVr1CRo53pFXRhq_pjN-AlG8UgwZK1y6m7zuDhxqJhD0SV0l"
 	)
-	return t.NewPackage("attr", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("attr", version, t.NewPatchedSource(
+		"attr", version, pkg.NewHTTPGetTar(
 			nil, "https://download.savannah.nongnu.org/releases/attr/"+
 				"attr-"+version+".tar.gz",
 			mustDecode(checksum),
 			pkg.TarGzip,
-	), &PackageAttr{
+		), true, [2]string{"libgen-basename", `From 8a80d895dfd779373363c3a4b62ecce5a549efb2 Mon Sep 17 00:00:00 2001
-		Patches: [][2]string{
-			{"libgen-basename", `From 8a80d895dfd779373363c3a4b62ecce5a549efb2 Mon Sep 17 00:00:00 2001
 From: "Haelwenn (lanodan) Monnier" <contact@hacktivis.me>
 Date: Sat, 30 Mar 2024 10:17:10 +0100
 Subject: tools/attr.c: Add missing libgen.h include for basename(3)
@@ -39,9 +38,7 @@ index f12e4af..6a3c1e9 100644
  #include <attr/attributes.h>
  
 -- 
-cgit v1.1`},
+cgit v1.1`}, [2]string{"musl-errno", `diff --git a/test/attr.test b/test/attr.test
-
-			{"musl-errno", `diff --git a/test/attr.test b/test/attr.test
 index 6ce2f9b..e9bde92 100644
 --- a/test/attr.test
 +++ b/test/attr.test
@@ -55,48 +52,39 @@ index 6ce2f9b..e9bde92 100644
         $ setfattr -n user. -v value f
         > setfattr: f: Invalid argument
 `},
-		},
+	), &MakeAttr{
-
 		ScriptEarly: `
 ln -s ../../system/bin/perl /usr/bin
 `,
-	}, (*MakeHelper)(nil),
+		Configure: [][2]string{
-		Perl,
+			{"enable-static"},
-	), version
+		},
+	},
+		t.Load(Perl),
+	)
 }
-func init() {
+func init() { artifactsF[Attr] = Toolchain.newAttr }
-	artifactsM[Attr] = Metadata{
-		f: Toolchain.newAttr,
 
-		Name:        "attr",
+func (t Toolchain) newACL() pkg.Artifact {
-		Description: "Commands for Manipulating Filesystem Extended Attributes",
-		Website:     "https://savannah.nongnu.org/projects/attr/",
-	}
-}
-
-func (t Toolchain) newACL() (pkg.Artifact, string) {
 	const (
 		version  = "2.3.2"
 		checksum = "-fY5nwH4K8ZHBCRXrzLdguPkqjKI6WIiGu4dBtrZ1o0t6AIU73w8wwJz_UyjIS0P"
 	)
-	return t.NewPackage("acl", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("acl", version, pkg.NewHTTPGetTar(
-		nil, "https://download.savannah.nongnu.org/releases/acl/"+
+		nil,
+		"https://download.savannah.nongnu.org/releases/acl/"+
 			"acl-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), nil, &MakeHelper{
+	), &MakeAttr{
+		Configure: [][2]string{
+			{"enable-static"},
+		},
+
 		// makes assumptions about uid_map/gid_map
 		SkipCheck: true,
 	},
-		Attr,
+		t.Load(Attr),
-	), version
+	)
-}
-func init() {
-	artifactsM[ACL] = Metadata{
-		f: Toolchain.newACL,
-
-		Name:        "acl",
-		Description: "Commands for Manipulating POSIX Access Control Lists",
-		Website:     "https://savannah.nongnu.org/projects/acl/",
-	}
 }
+func init() { artifactsF[ACL] = Toolchain.newACL }

internal/rosa/all.go

@@ -10,40 +10,20 @@ import (
 type PArtifact int
 
 const (
-	// ImageInitramfs is the Rosa OS initramfs archive.
+	ACL PArtifact = iota
-	ImageInitramfs PArtifact = iota
-
-	// Kernel is the generic Rosa OS Linux kernel.
-	Kernel
-	// KernelHeaders is an installation of kernel headers for [Kernel].
-	KernelHeaders
-	// KernelSource is a writable kernel source tree installed to [AbsUsrSrc].
-	KernelSource
-
-	ACL
-	ArgpStandalone
 	Attr
 	Autoconf
 	Automake
-	BC
 	Bash
 	Binutils
-	Bison
-	Bzip2
 	CMake
 	Coreutils
 	Curl
-	DTC
 	Diffutils
-	Elfutils
-	Fakeroot
 	Findutils
-	Flex
 	Fuse
-	GMP
-	GLib
 	Gawk
-	GenInitCPIO
+	GMP
 	Gettext
 	Git
 	Go
@@ -53,11 +33,9 @@ const (
 	Hakurei
 	HakureiDist
 	IniConfig
-	Kmod
+	KernelHeaders
 	LibXau
-	Libcap
 	Libexpat
-	Libiconv
 	Libpsl
 	Libffi
 	Libgd
@@ -65,52 +43,31 @@ const (
 	Libseccomp
 	Libucontext
 	Libxml2
-	Libxslt
 	M4
 	MPC
 	MPFR
 	Make
 	Meson
 	Mksh
-	MuslFts
-	MuslObstack
 	NSS
 	NSSCACert
-	Ncurses
 	Ninja
 	OpenSSL
-	PCRE2
 	Packaging
 	Patch
 	Perl
-	PerlLocaleGettext
-	PerlMIMECharset
-	PerlModuleBuild
-	PerlPodParser
-	PerlSGMLS
-	PerlTermReadKey
-	PerlTextCharWidth
-	PerlTextWrapI18N
-	PerlUnicodeGCString
-	PerlYAMLTiny
 	PkgConfig
 	Pluggy
-	Procps
 	PyTest
 	Pygments
 	Python
-	QEMU
 	Rsync
 	Sed
 	Setuptools
-	SquashfsTools
-	TamaGo
-	Tar
-	Texinfo
 	Toybox
 	toyboxEarly
 	Unzip
-	UtilLinux
+	utilMacros
 	Wayland
 	WaylandProtocols
 	XCB
@@ -118,82 +75,101 @@ const (
 	Xproto
 	XZ
 	Zlib
-	Zstd
 
-	// PresetUnexportedStart is the first unexported preset.
+	buildcatrust
-	PresetUnexportedStart
-
-	buildcatrust = iota - 1
-	utilMacros
-
-	// Musl is a standalone libc that does not depend on the toolchain.
-	Musl
 
 	// gcc is a hacked-to-pieces GCC toolchain meant for use in intermediate
 	// stages only. This preset and its direct output must never be exposed.
 	gcc
 
-	// Stage0 is a tarball containing all compile-time dependencies of artifacts
+	// _presetEnd is the total number of presets and does not denote a preset.
-	// part of the [Std] toolchain.
+	_presetEnd
-	Stage0
-
-	// PresetEnd is the total number of presets and does not denote a preset.
-	PresetEnd
 )
 
-// Metadata is stage-agnostic information of a [PArtifact] not directly
-// representable in the resulting [pkg.Artifact].
-type Metadata struct {
-	f func(t Toolchain) (a pkg.Artifact, version string)
-
-	// Unique package name.
-	Name string `json:"name"`
-	// Short user-facing description.
-	Description string `json:"description"`
-	// Project home page.
-	Website string `json:"website,omitempty"`
-}
-
-// Unversioned denotes an unversioned [PArtifact].
-const Unversioned = "\x00"
-
 var (
-	// artifactsM is an array of [PArtifact] metadata.
+	// artifactsF is an array of functions for the result of [PArtifact].
-	artifactsM [PresetEnd]Metadata
+	artifactsF [_presetEnd]func(t Toolchain) pkg.Artifact
 
-	// artifacts stores the result of Metadata.f.
+	// artifacts stores the result of artifactsF.
-	artifacts [_toolchainEnd][len(artifactsM)]pkg.Artifact
+	artifacts [_toolchainEnd][len(artifactsF)]pkg.Artifact
-	// versions stores the version of [PArtifact].
-	versions [_toolchainEnd][len(artifactsM)]string
 	// artifactsOnce is for lazy initialisation of artifacts.
-	artifactsOnce [_toolchainEnd][len(artifactsM)]sync.Once
+	artifactsOnce [_toolchainEnd][len(artifactsF)]sync.Once
 )
 
-// GetMetadata returns [Metadata] of a [PArtifact].
-func GetMetadata(p PArtifact) *Metadata { return &artifactsM[p] }
-
 // Load returns the resulting [pkg.Artifact] of [PArtifact].
 func (t Toolchain) Load(p PArtifact) pkg.Artifact {
 	artifactsOnce[t][p].Do(func() {
-		artifacts[t][p], versions[t][p] = artifactsM[p].f(t)
+		artifacts[t][p] = artifactsF[p](t)
 	})
 	return artifacts[t][p]
 }
 
-// Version returns the version string of [PArtifact].
-func (t Toolchain) Version(p PArtifact) string {
-	artifactsOnce[t][p].Do(func() {
-		artifacts[t][p], versions[t][p] = artifactsM[p].f(t)
-	})
-	return versions[t][p]
-}
-
 // ResolveName returns a [PArtifact] by name.
 func ResolveName(name string) (p PArtifact, ok bool) {
-	for i := range PresetUnexportedStart {
+	p, ok = map[string]PArtifact{
-		if name == artifactsM[i].Name {
+		"acl":               ACL,
-			return i, true
+		"attr":              Attr,
-		}
+		"autoconf":          Autoconf,
-	}
+		"automake":          Automake,
-	return 0, false
+		"bash":              Bash,
+		"binutils":          Binutils,
+		"cmake":             CMake,
+		"coreutils":         Coreutils,
+		"curl":              Curl,
+		"diffutils":         Diffutils,
+		"findutils":         Findutils,
+		"fuse":              Fuse,
+		"gawk":              Gawk,
+		"gmp":               GMP,
+		"gettext":           Gettext,
+		"git":               Git,
+		"go":                Go,
+		"gperf":             Gperf,
+		"grep":              Grep,
+		"gzip":              Gzip,
+		"hakurei":           Hakurei,
+		"hakurei-dist":      HakureiDist,
+		"iniconfig":         IniConfig,
+		"kernel-headers":    KernelHeaders,
+		"libXau":            LibXau,
+		"libexpat":          Libexpat,
+		"libpsl":            Libpsl,
+		"libseccomp":        Libseccomp,
+		"libucontext":       Libucontext,
+		"libxml2":           Libxml2,
+		"libffi":            Libffi,
+		"libgd":             Libgd,
+		"libtool":           Libtool,
+		"m4":                M4,
+		"mpc":               MPC,
+		"mpfr":              MPFR,
+		"make":              Make,
+		"meson":             Meson,
+		"mksh":              Mksh,
+		"nss":               NSS,
+		"nss-cacert":        NSSCACert,
+		"ninja":             Ninja,
+		"openssl":           OpenSSL,
+		"packaging":         Packaging,
+		"patch":             Patch,
+		"perl":              Perl,
+		"pkg-config":        PkgConfig,
+		"pluggy":            Pluggy,
+		"pytest":            PyTest,
+		"pygments":          Pygments,
+		"python":            Python,
+		"rsync":             Rsync,
+		"sed":               Sed,
+		"setuptools":        Setuptools,
+		"toybox":            Toybox,
+		"unzip":             Unzip,
+		"wayland":           Wayland,
+		"wayland-protocols": WaylandProtocols,
+		"xcb":               XCB,
+		"xcb-proto":         XCBProto,
+		"xproto":            Xproto,
+		"xz":                XZ,
+		"zlib":              Zlib,
+	}[name]
+	return
 }

internal/rosa/all_test.go

@@ -1,53 +0,0 @@
-package rosa_test
-
-import (
-	"testing"
-
-	"hakurei.app/internal/rosa"
-)
-
-func TestLoad(t *testing.T) {
-	t.Parallel()
-
-	for i := range rosa.PresetEnd {
-		p := rosa.PArtifact(i)
-		t.Run(rosa.GetMetadata(p).Name, func(t *testing.T) {
-			t.Parallel()
-
-			rosa.Std.Load(p)
-		})
-	}
-}
-
-func TestResolveName(t *testing.T) {
-	t.Parallel()
-
-	for i := range rosa.PresetUnexportedStart {
-		p := i
-		name := rosa.GetMetadata(p).Name
-		t.Run(name, func(t *testing.T) {
-			t.Parallel()
-
-			if got, ok := rosa.ResolveName(name); !ok {
-				t.Fatal("ResolveName: ok = false")
-			} else if got != p {
-				t.Fatalf("ResolveName: %d, want %d", got, p)
-			}
-		})
-	}
-}
-func TestResolveNameUnexported(t *testing.T) {
-	t.Parallel()
-
-	for i := rosa.PresetUnexportedStart; i < rosa.PresetEnd; i++ {
-		p := i
-		name := rosa.GetMetadata(p).Name
-		t.Run(name, func(t *testing.T) {
-			t.Parallel()
-
-			if got, ok := rosa.ResolveName(name); ok {
-				t.Fatalf("ResolveName: resolved unexported preset %d", got)
-			}
-		})
-	}
-}

internal/rosa/argp-standalone.go

@@ -1,36 +0,0 @@
-package rosa
-
-import "hakurei.app/internal/pkg"
-
-func (t Toolchain) newArgpStandalone() (pkg.Artifact, string) {
-	const (
-		version  = "1.3"
-		checksum = "vtW0VyO2pJ-hPyYmDI2zwSLS8QL0sPAUKC1t3zNYbwN2TmsaE-fADhaVtNd3eNFl"
-	)
-	return t.NewPackage("argp-standalone", version, pkg.NewHTTPGetTar(
-		nil, "http://www.lysator.liu.se/~nisse/misc/"+
-			"argp-standalone-"+version+".tar.gz",
-		mustDecode(checksum),
-		pkg.TarGzip,
-	), &PackageAttr{
-		Env: []string{
-			"CC=cc -std=gnu89 -fPIC",
-		},
-	}, &MakeHelper{
-		Install: `
-install -D -m644 /usr/src/argp-standalone/argp.h /work/system/include/argp.h
-install -D -m755 libargp.a /work/system/lib/libargp.a
-`,
-	},
-		Diffutils,
-	), version
-}
-func init() {
-	artifactsM[ArgpStandalone] = Metadata{
-		f: Toolchain.newArgpStandalone,
-
-		Name:        "argp-standalone",
-		Description: "hierarchical argument parsing library broken out from glibc",
-		Website:     "http://www.lysator.liu.se/~nisse/misc/",
-	}
-}

internal/rosa/bzip2.go

@@ -1,36 +0,0 @@
-package rosa
-
-import "hakurei.app/internal/pkg"
-
-func (t Toolchain) newBzip2() (pkg.Artifact, string) {
-	const (
-		version  = "1.0.8"
-		checksum = "cTLykcco7boom-s05H1JVsQi1AtChYL84nXkg_92Dm1Xt94Ob_qlMg_-NSguIK-c"
-	)
-	return t.NewPackage("bzip2", version, pkg.NewHTTPGetTar(
-		nil, "https://sourceware.org/pub/bzip2/bzip2-"+version+".tar.gz",
-		mustDecode(checksum),
-		pkg.TarGzip,
-	), &PackageAttr{
-		Writable:    true,
-		EnterSource: true,
-	}, &MakeHelper{
-		// uses source tree as scratch space
-		SkipConfigure: true,
-		SkipCheck:     true,
-		InPlace:       true,
-		Make: []string{
-			"CC=cc",
-		},
-		Install: "make PREFIX=/work/system install",
-	}), version
-}
-func init() {
-	artifactsM[Bzip2] = Metadata{
-		f: Toolchain.newBzip2,
-
-		Name:        "bzip2",
-		Description: "a freely available, patent free, high-quality data compressor",
-		Website:     "https://sourceware.org/bzip2/",
-	}
-}

internal/rosa/cmake.go

@@ -1,167 +1,82 @@
 package rosa
 
 import (
-	"path"
 	"slices"
 	"strings"
 
+	"hakurei.app/container/check"
 	"hakurei.app/internal/pkg"
 )
 
-func (t Toolchain) newCMake() (pkg.Artifact, string) {
+func (t Toolchain) newCMake() pkg.Artifact {
 	const (
-		version  = "4.2.3"
+		version  = "4.2.1"
-		checksum = "Y4uYGnLrDQX78UdzH7fMzfok46Nt_1taDIHSmqgboU1yFi6f0iAXBDegMCu4eS-J"
+		checksum = "Y3OdbMsob6Xk2y1DCME6z4Fryb5_TkFD7knRT8dTNIRtSqbiCJyyDN9AxggN_I75"
 	)
-	return t.NewPackage("cmake", version, pkg.NewHTTPGetTar(
+	return t.New("cmake-"+version, 0, []pkg.Artifact{
+		t.Load(Make),
+		t.Load(KernelHeaders),
+	}, nil, nil, `
+cd "$(mktemp -d)"
+/usr/src/cmake/bootstrap \
+	--prefix=/system \
+	--parallel="$(nproc)" \
+	-- \
+	-DCMAKE_USE_OPENSSL=OFF
+make "-j$(nproc)"
+make DESTDIR=/work install
+`, pkg.Path(AbsUsrSrc.Append("cmake"), true, t.NewPatchedSource(
+		// expected to be writable in the copy made during bootstrap
+		"cmake", version, pkg.NewHTTPGetTar(
 			nil, "https://github.com/Kitware/CMake/releases/download/"+
 				"v"+version+"/cmake-"+version+".tar.gz",
 			mustDecode(checksum),
 			pkg.TarGzip,
-	), &PackageAttr{
+		), false,
-		// test suite expects writable source tree
+	)))
-		Writable: true,
-
-		// expected to be writable in the copy made during bootstrap
-		Chmod: true,
-
-		Patches: [][2]string{
-			{"bootstrap-test-no-openssl", `diff --git a/Tests/BootstrapTest.cmake b/Tests/BootstrapTest.cmake
-index 137de78bc1..b4da52e664 100644
---- a/Tests/BootstrapTest.cmake
-+++ b/Tests/BootstrapTest.cmake
-@@ -9,7 +9,7 @@ if(NOT nproc EQUAL 0)
- endif()
- message(STATUS "running bootstrap: ${bootstrap} ${ninja_arg} ${parallel_arg}")
- execute_process(
--  COMMAND ${bootstrap} ${ninja_arg} ${parallel_arg}
-+  COMMAND ${bootstrap} ${ninja_arg} ${parallel_arg} -- -DCMAKE_USE_OPENSSL=OFF
-   WORKING_DIRECTORY "${bin_dir}"
-   RESULT_VARIABLE result
-   )
-`},
-
-			{"disable-broken-tests-musl", `diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt
-index 2ead810437..f85cbb8b1c 100644
---- a/Tests/CMakeLists.txt
-+++ b/Tests/CMakeLists.txt
-@@ -384,7 +384,6 @@ if(BUILD_TESTING)
-     add_subdirectory(CMakeLib)
-   endif()
-   add_subdirectory(CMakeOnly)
--  add_subdirectory(RunCMake)
- 
-   add_subdirectory(FindPackageModeMakefileTest)
- 
-@@ -528,9 +527,6 @@ if(BUILD_TESTING)
-                                  -DCMake_TEST_CUDA:BOOL=${CMake_TEST_CUDA}
-                                  -DCMake_INSTALL_NAME_TOOL_BUG:BOOL=${CMake_INSTALL_NAME_TOOL_BUG}
-                                  )
--  ADD_TEST_MACRO(ExportImport ExportImport)
--  set_property(TEST ExportImport APPEND
--    PROPERTY LABELS "CUDA")
-   ADD_TEST_MACRO(Unset Unset)
-   ADD_TEST_MACRO(PolicyScope PolicyScope)
-   ADD_TEST_MACRO(EmptyLibrary EmptyLibrary)
-@@ -624,7 +620,6 @@ if(BUILD_TESTING)
-   # run test for BundleUtilities on supported platforms/compilers
-   if((MSVC OR
-       MINGW OR
--      CMAKE_SYSTEM_NAME MATCHES "Linux" OR
-       CMAKE_SYSTEM_NAME MATCHES "Darwin")
-     AND NOT CMAKE_GENERATOR STREQUAL "Watcom WMake")
- 
-@@ -3095,10 +3090,6 @@ if(BUILD_TESTING)
-     "${CMake_SOURCE_DIR}/Tests/CTestTestFdSetSize/test.cmake.in"
-     "${CMake_BINARY_DIR}/Tests/CTestTestFdSetSize/test.cmake"
-     @ONLY ESCAPE_QUOTES)
--  add_test(CTestTestFdSetSize ${CMAKE_CTEST_COMMAND}
--    -S "${CMake_BINARY_DIR}/Tests/CTestTestFdSetSize/test.cmake" -j20 -V --timeout 120
--    --output-log "${CMake_BINARY_DIR}/Tests/CTestTestFdSetSize/testOutput.log"
--    )
- 
-   if(CMAKE_TESTS_CDASH_SERVER)
-     set(regex "^([^:]+)://([^/]+)(.*)$")
-`},
-		},
-	}, &MakeHelper{
-		OmitDefaults: true,
-
-		ConfigureName: "/usr/src/cmake/bootstrap",
-		Configure: [][2]string{
-			{"prefix", "/system"},
-			{"parallel", `"$(nproc)"`},
-			{"--"},
-			{"-DCMAKE_USE_OPENSSL", "OFF"},
-			{"-DCMake_TEST_NO_NETWORK", "ON"},
-		},
-		Check: []string{
-			"CTEST_OUTPUT_ON_FAILURE=1",
-			"CTEST_PARALLEL_LEVEL=128",
-			"test",
-		},
-	},
-		KernelHeaders,
-	), version
 }
-func init() {
+func init() { artifactsF[CMake] = Toolchain.newCMake }
-	artifactsM[CMake] = Metadata{
-		f: Toolchain.newCMake,
-
-		Name:        "cmake",
-		Description: "cross-platform, open-source build system",
-		Website:     "https://cmake.org/",
-	}
-}
-
-// CMakeHelper is the [CMake] build system helper.
-type CMakeHelper struct {
-	// Joined with name with a dash if non-empty.
-	Variant string
 
+// CMakeAttr holds the project-specific attributes that will be applied to a new
+// [pkg.Artifact] compiled via [CMake].
+type CMakeAttr struct {
 	// Path elements joined with source.
 	Append []string
+	// Use source tree as scratch space.
+	Writable bool
 
 	// CMake CACHE entries.
 	Cache [][2]string
+	// Additional environment variables.
+	Env []string
+	// Runs before cmake.
+	ScriptEarly string
+	// Runs after cmake, replaces default.
+	ScriptConfigured string
 	// Runs after install.
 	Script string
+
+	// Override the default installation prefix [AbsSystem].
+	Prefix *check.Absolute
+
+	// Passed through to [Toolchain.New].
+	Paths []pkg.ExecPath
+	// Passed through to [Toolchain.New].
+	Flag int
 }
 
-var _ Helper = new(CMakeHelper)
+// NewViaCMake returns a [pkg.Artifact] for compiling and installing via [CMake].
-
+func (t Toolchain) NewViaCMake(
-// name returns its arguments and an optional variant string joined with '-'.
+	name, version, variant string,
-func (attr *CMakeHelper) name(name, version string) string {
+	source pkg.Artifact,
-	if attr != nil && attr.Variant != "" {
+	attr *CMakeAttr,
-		name += "-" + attr.Variant
+	extra ...pkg.Artifact,
+) pkg.Artifact {
+	if name == "" || version == "" || variant == "" {
+		panic("names must be non-empty")
 	}
-	return name + "-" + version
-}
-
-// extra returns a hardcoded slice of [CMake] and [Ninja].
-func (*CMakeHelper) extra(int) []PArtifact {
-	return []PArtifact{CMake, Ninja}
-}
-
-// wantsChmod returns false.
-func (*CMakeHelper) wantsChmod() bool { return false }
-
-// wantsWrite returns false.
-func (*CMakeHelper) wantsWrite() bool { return false }
-
-// scriptEarly returns the zero value.
-func (*CMakeHelper) scriptEarly() string { return "" }
-
-// createDir returns true.
-func (*CMakeHelper) createDir() bool { return true }
-
-// wantsDir returns a hardcoded, deterministic pathname.
-func (*CMakeHelper) wantsDir() string { return "/cure/" }
-
-// script generates the cure script.
-func (attr *CMakeHelper) script(name string) string {
 	if attr == nil {
-		attr = &CMakeHelper{
+		attr = &CMakeAttr{
 			Cache: [][2]string{
 				{"CMAKE_BUILD_TYPE", "Release"},
 			},
@@ -171,7 +86,26 @@ func (attr *CMakeHelper) script(name string) string {
 		panic("CACHE must be non-empty")
 	}
 
-	return `
+	scriptConfigured := "cmake --build .\ncmake --install .\n"
+	if attr.ScriptConfigured != "" {
+		scriptConfigured = attr.ScriptConfigured
+	}
+
+	prefix := attr.Prefix
+	if prefix == nil {
+		prefix = AbsSystem
+	}
+
+	sourcePath := AbsUsrSrc.Append(name)
+	return t.New(name+"-"+variant+"-"+version, attr.Flag, stage3Concat(t, extra,
+		t.Load(CMake),
+		t.Load(Ninja),
+	), nil, slices.Concat([]string{
+		"ROSA_SOURCE=" + sourcePath.String(),
+		"ROSA_CMAKE_SOURCE=" + sourcePath.Append(attr.Append...).String(),
+		"ROSA_INSTALL_PREFIX=/work" + prefix.String(),
+	}, attr.Env), attr.ScriptEarly+`
+mkdir /cure && cd /cure
 cmake -G Ninja \
 	-DCMAKE_C_COMPILER_TARGET="${ROSA_TRIPLE}" \
 	-DCMAKE_CXX_COMPILER_TARGET="${ROSA_TRIPLE}" \
@@ -183,9 +117,9 @@ cmake -G Ninja \
 			}
 		}
 	}), " \\\n\t")+` \
-	-DCMAKE_INSTALL_PREFIX=/work/system \
+	-DCMAKE_INSTALL_PREFIX="${ROSA_INSTALL_PREFIX}" \
-	'/usr/src/` + name + `/` + path.Join(attr.Append...) + `'
+	"${ROSA_CMAKE_SOURCE}"
-cmake --build .
+`+scriptConfigured+attr.Script, slices.Concat([]pkg.ExecPath{
-cmake --install .
+		pkg.Path(sourcePath, attr.Writable, source),
-` + attr.Script
+	}, attr.Paths)...)
 }

internal/rosa/curl.go

@@ -2,37 +2,31 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newCurl() (pkg.Artifact, string) {
+func (t Toolchain) newCurl() pkg.Artifact {
 	const (
 		version  = "8.18.0"
 		checksum = "YpOolP_sx1DIrCEJ3elgVAu0wTLDS-EZMZFvOP0eha7FaLueZUlEpuMwDzJNyi7i"
 	)
-	return t.NewPackage("curl", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("curl", version, pkg.NewHTTPGetTar(
 		nil, "https://curl.se/download/curl-"+version+".tar.bz2",
 		mustDecode(checksum),
 		pkg.TarBzip2,
-	), nil, &MakeHelper{
+	), &MakeAttr{
+		Env: []string{
+			"TFLAGS=-j256",
+		},
 		Configure: [][2]string{
 			{"with-openssl"},
 			{"with-ca-bundle", "/system/etc/ssl/certs/ca-bundle.crt"},
 		},
-		Check: []string{
+		ScriptConfigured: `
-			"TFLAGS=-j256",
+make "-j$(nproc)"
-			"check",
+`,
 	},
-	},
+		t.Load(Perl),
-		Perl,
 
-		Libpsl,
+		t.Load(Libpsl),
-		OpenSSL,
+		t.Load(OpenSSL),
-	), version
+	)
-}
-func init() {
-	artifactsM[Curl] = Metadata{
-		f: Toolchain.newCurl,
-
-		Name:        "curl",
-		Description: "command line tool and library for transferring data with URLs",
-		Website:     "https://curl.se/",
-	}
 }
+func init() { artifactsF[Curl] = Toolchain.newCurl }

internal/rosa/dtc.go

@@ -1,41 +0,0 @@
-package rosa
-
-import "hakurei.app/internal/pkg"
-
-func (t Toolchain) newDTC() (pkg.Artifact, string) {
-	const (
-		version  = "1.7.2"
-		checksum = "vUoiRynPyYRexTpS6USweT5p4SVHvvVJs8uqFkkVD-YnFjwf6v3elQ0-Etrh00Dt"
-	)
-	return t.NewPackage("dtc", version, pkg.NewHTTPGetTar(
-		nil, "https://git.kernel.org/pub/scm/utils/dtc/dtc.git/snapshot/"+
-			"dtc-v"+version+".tar.gz",
-		mustDecode(checksum),
-		pkg.TarGzip,
-	), &PackageAttr{
-		// works around buggy test:
-		// fdtdump-runtest.sh /usr/src/dtc/tests/fdtdump.dts
-		Writable: true,
-		Chmod:    true,
-	}, &MesonHelper{
-		Setup: [][2]string{
-			{"Dyaml", "disabled"},
-			{"Dstatic-build", "true"},
-		},
-	},
-		Flex,
-		Bison,
-		M4,
-		Coreutils,
-		Diffutils,
-	), version
-}
-func init() {
-	artifactsM[DTC] = Metadata{
-		f: Toolchain.newDTC,
-
-		Name:        "dtc",
-		Description: "The Device Tree Compiler",
-		Website:     "https://git.kernel.org/pub/scm/utils/dtc/dtc.git/",
-	}
-}

internal/rosa/elfutils.go

@@ -1,49 +0,0 @@
-package rosa
-
-import "hakurei.app/internal/pkg"
-
-func (t Toolchain) newElfutils() (pkg.Artifact, string) {
-	const (
-		version  = "0.194"
-		checksum = "Q3XUygUPv9vR1TkWucwUsQ8Kb1_F6gzk-KMPELr3cC_4AcTrprhVPMvN0CKkiYRa"
-	)
-	return t.NewPackage("elfutils", version, pkg.NewHTTPGetTar(
-		nil, "https://sourceware.org/elfutils/ftp/"+
-			version+"/elfutils-"+version+".tar.bz2",
-		mustDecode(checksum),
-		pkg.TarBzip2,
-	), &PackageAttr{
-		Env: []string{
-			"CC=cc" +
-				// nonstandard glibc extension
-				" -DFNM_EXTMATCH=0",
-		},
-	}, &MakeHelper{
-		// nonstandard glibc extension
-		SkipCheck: true,
-
-		Configure: [][2]string{
-			{"enable-deterministic-archives"},
-		},
-	},
-		M4,
-		PkgConfig,
-
-		Zlib,
-		Bzip2,
-		Zstd,
-		ArgpStandalone,
-		MuslFts,
-		MuslObstack,
-		KernelHeaders,
-	), version
-}
-func init() {
-	artifactsM[Elfutils] = Metadata{
-		f: Toolchain.newElfutils,
-
-		Name:        "elfutils",
-		Description: "utilities and libraries to handle ELF files and DWARF data",
-		Website:     "https://sourceware.org/elfutils/",
-	}
-}

internal/rosa/fakeroot.go

@@ -1,59 +0,0 @@
-package rosa
-
-import "hakurei.app/internal/pkg"
-
-func (t Toolchain) newFakeroot() (pkg.Artifact, string) {
-	const (
-		version  = "1.37.2"
-		checksum = "4ve-eDqVspzQ6VWDhPS0NjW3aSenBJcPAJq_BFT7OOFgUdrQzoTBxZWipDAGWxF8"
-	)
-	return t.NewPackage("fakeroot", version, pkg.NewHTTPGetTar(
-		nil, "https://salsa.debian.org/clint/fakeroot/-/archive/upstream/"+
-			version+"/fakeroot-upstream-"+version+".tar.bz2",
-		mustDecode(checksum),
-		pkg.TarBzip2,
-	), &PackageAttr{
-		Patches: [][2]string{
-			{"remove-broken-docs", `diff --git a/doc/Makefile.am b/doc/Makefile.am
-index f135ad9..85c784c 100644
---- a/doc/Makefile.am
-+++ b/doc/Makefile.am
-@@ -1,5 +1,4 @@
- AUTOMAKE_OPTIONS=foreign
--SUBDIRS = de es fr nl pt ro sv
- 
- man_MANS = faked.1 fakeroot.1
- 
-`},
-		},
-
-		Env: []string{
-			"CONFIG_SHELL=/bin/sh",
-		},
-	}, &MakeHelper{
-		Generate: "./bootstrap",
-
-		// makes assumptions about /etc/passwd
-		SkipCheck: true,
-	},
-		M4,
-		Perl,
-		Autoconf,
-		Automake,
-		Libtool,
-		PkgConfig,
-
-		Attr,
-		Libcap,
-		KernelHeaders,
-	), version
-}
-func init() {
-	artifactsM[Fakeroot] = Metadata{
-		f: Toolchain.newFakeroot,
-
-		Name:        "fakeroot",
-		Description: "tool for simulating superuser privileges",
-		Website:     "https://salsa.debian.org/clint/fakeroot",
-	}
-}

internal/rosa/flex.go

@@ -1,29 +0,0 @@
-package rosa
-
-import (
-	"hakurei.app/internal/pkg"
-)
-
-func (t Toolchain) newFlex() (pkg.Artifact, string) {
-	const (
-		version  = "2.6.4"
-		checksum = "p9POjQU7VhgOf3x5iFro8fjhy0NOanvA7CTeuWS_veSNgCixIJshTrWVkc5XLZkB"
-	)
-	return t.NewPackage("flex", version, pkg.NewHTTPGetTar(
-		nil, "https://github.com/westes/flex/releases/download/"+
-			"v"+version+"/flex-"+version+".tar.gz",
-		mustDecode(checksum),
-		pkg.TarGzip,
-	), nil, (*MakeHelper)(nil),
-		M4,
-	), version
-}
-func init() {
-	artifactsM[Flex] = Metadata{
-		f: Toolchain.newFlex,
-
-		Name:        "flex",
-		Description: "scanner generator for lexing in C and C++",
-		Website:     "https://github.com/westes/flex/",
-	}
-}

internal/rosa/fuse.go

@@ -2,43 +2,44 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newFuse() (pkg.Artifact, string) {
+func (t Toolchain) newFuse() pkg.Artifact {
 	const (
 		version  = "3.18.1"
 		checksum = "COb-BgJRWXLbt9XUkNeuiroQizpMifXqxgieE1SlkMXhs_WGSyJStrmyewAw2hd6"
 	)
-	return t.NewPackage("fuse", version, pkg.NewHTTPGetTar(
+	return t.New("fuse-"+version, 0, []pkg.Artifact{
+		t.Load(Python),
+		t.Load(Meson),
+		t.Load(Ninja),
+
+		t.Load(IniConfig),
+		t.Load(Packaging),
+		t.Load(Pluggy),
+		t.Load(Pygments),
+		t.Load(PyTest),
+
+		t.Load(KernelHeaders),
+	}, nil, nil, `
+cd "$(mktemp -d)"
+meson setup \
+	--reconfigure \
+	--buildtype=release \
+	--prefix=/system \
+	--prefer-static \
+	-Dtests=true \
+	-Duseroot=false \
+	-Dinitscriptdir=/system/init.d \
+	-Ddefault_library=both \
+	. /usr/src/fuse
+meson compile
+python3 -m pytest test/
+meson install \
+	--destdir=/work
+`, pkg.Path(AbsUsrSrc.Append("fuse"), false, pkg.NewHTTPGetTar(
 		nil, "https://github.com/libfuse/libfuse/releases/download/"+
 			"fuse-"+version+"/fuse-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), nil, &MesonHelper{
+	)))
-		Setup: [][2]string{
-			{"Ddefault_library", "both"},
-			{"Dtests", "true"},
-			{"Duseroot", "false"},
-			{"Dinitscriptdir", "/system/etc"},
-		},
-
-		ScriptCompiled: "python3 -m pytest test/",
-		// this project uses pytest
-		SkipTest: true,
-	},
-		IniConfig,
-		Packaging,
-		Pluggy,
-		Pygments,
-		PyTest,
-
-		KernelHeaders,
-	), version
-}
-func init() {
-	artifactsM[Fuse] = Metadata{
-		f: Toolchain.newFuse,
-
-		Name:        "fuse",
-		Description: "the reference implementation of the Linux FUSE interface",
-		Website:     "https://github.com/libfuse/libfuse/",
-	}
 }
+func init() { artifactsF[Fuse] = Toolchain.newFuse }

internal/rosa/git.go

@@ -1,30 +1,40 @@
 package rosa
 
-import "hakurei.app/internal/pkg"
+import (
+	"hakurei.app/internal/pkg"
+)
 
-func (t Toolchain) newGit() (pkg.Artifact, string) {
+func (t Toolchain) newGit() pkg.Artifact {
 	const (
 		version  = "2.52.0"
 		checksum = "uH3J1HAN_c6PfGNJd2OBwW4zo36n71wmkdvityYnrh8Ak0D1IifiAvEWz9Vi9DmS"
 	)
-	return t.NewPackage("git", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("git", version, t.NewPatchedSource(
+		"git", version, pkg.NewHTTPGetTar(
 			nil, "https://www.kernel.org/pub/software/scm/git/"+
 				"git-"+version+".tar.gz",
 			mustDecode(checksum),
 			pkg.TarGzip,
-	), &PackageAttr{
+		), false,
-		ScriptEarly: `
+	), &MakeAttr{
-ln -s ../../system/bin/perl /usr/bin/ || true
-`,
-
 		// uses source tree as scratch space
-		EnterSource: true,
+		Writable: true,
-	}, &MakeHelper{
 		InPlace:  true,
-		Generate: "make configure",
+
-		ScriptMakeEarly: `
+		// test suite in subdirectory
+		SkipCheck: true,
+
+		Make: []string{"all"},
+		ScriptEarly: `
+cd /usr/src/git
+
+make configure
+`,
+		Script: `
+ln -s ../../system/bin/perl /usr/bin/ || true
+
 function disable_test {
-	local test=$1 pattern=${2:-''}
+	local test=$1 pattern=$2
 	if [ $# -eq 1 ]; then
 		rm "t/${test}.sh"
 	else
@@ -46,34 +56,26 @@ disable_test t9300-fast-import
 disable_test t0211-trace2-perf
 disable_test t1517-outside-repo
 disable_test t2200-add-update
+
+make \
+	-C t \
+	GIT_PROVE_OPTS="--jobs 32 --failures" \
+	prove
 `,
-		Check: []string{
-			"-C t",
-			`GIT_PROVE_OPTS="--jobs 32 --failures"`,
-			"prove",
 	},
-	},
+		t.Load(Perl),
-		Perl,
+		t.Load(Diffutils),
-		Diffutils,
+		t.Load(M4),
-		M4,
+		t.Load(Autoconf),
-		Autoconf,
+		t.Load(Gettext),
-		Gettext,
 
-		Zlib,
+		t.Load(Zlib),
-		Curl,
+		t.Load(Curl),
-		OpenSSL,
+		t.Load(OpenSSL),
-		Libexpat,
+		t.Load(Libexpat),
-	), version
+	)
-}
-func init() {
-	artifactsM[Git] = Metadata{
-		f: Toolchain.newGit,
-
-		Name:        "git",
-		Description: "distributed version control system",
-		Website:     "https://www.git-scm.com/",
-	}
 }
+func init() { artifactsF[Git] = Toolchain.newGit }
 
 // NewViaGit returns a [pkg.Artifact] for cloning a git repository.
 func (t Toolchain) NewViaGit(

internal/rosa/gnu.go

@@ -2,127 +2,79 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newM4() (pkg.Artifact, string) {
+func (t Toolchain) newM4() pkg.Artifact {
 	const (
 		version  = "1.4.20"
 		checksum = "RT0_L3m4Co86bVBY3lCFAEs040yI1WdeNmRylFpah8IZovTm6O4wI7qiHJN3qsW9"
 	)
-	return t.NewPackage("m4", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("m4", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/m4/m4-"+version+".tar.bz2",
 		mustDecode(checksum),
 		pkg.TarBzip2,
-	), &PackageAttr{
+	), &MakeAttr{
 		Writable: true,
 		ScriptEarly: `
+cd /usr/src/m4
 chmod +w tests/test-c32ispunct.sh && echo '#!/bin/sh' > tests/test-c32ispunct.sh
 `,
-	}, (*MakeHelper)(nil),
+	},
-		Diffutils,
+		t.Load(Diffutils),
-	), version
-}
-func init() {
-	artifactsM[M4] = Metadata{
-		f: Toolchain.newM4,
-
-		Name:        "m4",
-		Description: "a macro processor with GNU extensions",
-		Website:     "https://www.gnu.org/software/m4/",
-	}
-}
-
-func (t Toolchain) newBison() (pkg.Artifact, string) {
-	const (
-		version  = "3.8.2"
-		checksum = "BhRM6K7URj1LNOkIDCFDctSErLS-Xo5d9ba9seg10o6ACrgC1uNhED7CQPgIY29Y"
 	)
-	return t.NewPackage("bison", version, pkg.NewHTTPGetTar(
-		nil, "https://ftpmirror.gnu.org/gnu/bison/bison-"+version+".tar.gz",
-		mustDecode(checksum),
-		pkg.TarGzip,
-	), nil, (*MakeHelper)(nil),
-		M4,
-		Diffutils,
-		Sed,
-	), version
 }
-func init() {
+func init() { artifactsF[M4] = Toolchain.newM4 }
-	artifactsM[Bison] = Metadata{
-		f: Toolchain.newBison,
 
-		Name:        "bison",
+func (t Toolchain) newSed() pkg.Artifact {
-		Description: "a general-purpose parser generator",
-		Website:     "https://www.gnu.org/software/bison/",
-	}
-}
-
-func (t Toolchain) newSed() (pkg.Artifact, string) {
 	const (
 		version  = "4.9"
 		checksum = "pe7HWH4PHNYrazOTlUoE1fXmhn2GOPFN_xE62i0llOr3kYGrH1g2_orDz0UtZ9Nt"
 	)
-	return t.NewPackage("sed", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("sed", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/sed/sed-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), nil, (*MakeHelper)(nil),
+	), nil,
-		Diffutils,
+		t.Load(Diffutils),
-	), version
+	)
 }
-func init() {
+func init() { artifactsF[Sed] = Toolchain.newSed }
-	artifactsM[Sed] = Metadata{
-		f: Toolchain.newSed,
 
-		Name:        "sed",
+func (t Toolchain) newAutoconf() pkg.Artifact {
-		Description: "a non-interactive command-line text editor",
-		Website:     "https://www.gnu.org/software/sed/",
-	}
-}
-
-func (t Toolchain) newAutoconf() (pkg.Artifact, string) {
 	const (
 		version  = "2.72"
 		checksum = "-c5blYkC-xLDer3TWEqJTyh1RLbOd1c5dnRLKsDnIrg_wWNOLBpaqMY8FvmUFJ33"
 	)
-	return t.NewPackage("autoconf", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("autoconf", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/autoconf/autoconf-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &PackageAttr{
+	), &MakeAttr{
-		Flag: TExclusive,
+		Make: []string{
-	}, &MakeHelper{
-		Check: []string{
 			`TESTSUITEFLAGS="-j$(nproc)"`,
-			"check",
 		},
+		Flag: TExclusive,
 	},
-		M4,
+		t.Load(M4),
-		Perl,
+		t.Load(Perl),
-		Bash,
+		t.Load(Bash),
-		Diffutils,
+		t.Load(Diffutils),
-	), version
+	)
 }
-func init() {
+func init() { artifactsF[Autoconf] = Toolchain.newAutoconf }
-	artifactsM[Autoconf] = Metadata{
-		f: Toolchain.newAutoconf,
 
-		Name:        "autoconf",
+func (t Toolchain) newAutomake() pkg.Artifact {
-		Description: "M4 macros to produce self-contained configure script",
-		Website:     "https://www.gnu.org/software/autoconf/",
-	}
-}
-
-func (t Toolchain) newAutomake() (pkg.Artifact, string) {
 	const (
 		version  = "1.18.1"
 		checksum = "FjvLG_GdQP7cThTZJLDMxYpRcKdpAVG-YDs1Fj1yaHlSdh_Kx6nRGN14E0r_BjcG"
 	)
-	return t.NewPackage("automake", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("automake", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/automake/automake-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &PackageAttr{
+	), &MakeAttr{
 		Writable: true,
 		ScriptEarly: `
+cd /usr/src/automake
+
 test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
 
 test_disable '#!/bin/sh' t/objcxx-minidemo.sh
@@ -132,90 +84,66 @@ test_disable '#!/bin/sh' t/dist-no-built-sources.sh
 test_disable '#!/bin/sh' t/distname.sh
 test_disable '#!/bin/sh' t/pr9.sh
 `,
-	}, (*MakeHelper)(nil),
+	},
-		M4,
+		t.Load(M4),
-		Perl,
+		t.Load(Perl),
-		Grep,
+		t.Load(Grep),
-		Gzip,
+		t.Load(Gzip),
-		Autoconf,
+		t.Load(Autoconf),
-		Diffutils,
+		t.Load(Diffutils),
-	), version
+	)
 }
-func init() {
+func init() { artifactsF[Automake] = Toolchain.newAutomake }
-	artifactsM[Automake] = Metadata{
-		f: Toolchain.newAutomake,
 
-		Name:        "automake",
+func (t Toolchain) newLibtool() pkg.Artifact {
-		Description: "a tool for automatically generating Makefile.in files",
-		Website:     "https://www.gnu.org/software/automake/",
-	}
-}
-
-func (t Toolchain) newLibtool() (pkg.Artifact, string) {
 	const (
 		version  = "2.5.4"
 		checksum = "pa6LSrQggh8mSJHQfwGjysAApmZlGJt8wif2cCLzqAAa2jpsTY0jZ-6stS3BWZ2Q"
 	)
-	return t.NewPackage("libtool", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("libtool", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/libtool/libtool-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), nil, &MakeHelper{
+	), &MakeAttr{
-		Check: []string{
+		Make: []string{
-			`TESTSUITEFLAGS="-j$(nproc)"`,
+			`TESTSUITEFLAGS=32`,
-			"check",
 		},
 	},
-		M4,
+		t.Load(M4),
-		Diffutils,
+		t.Load(Diffutils),
-	), version
+	)
 }
-func init() {
+func init() { artifactsF[Libtool] = Toolchain.newLibtool }
-	artifactsM[Libtool] = Metadata{
-		f: Toolchain.newLibtool,
 
-		Name:        "libtool",
+func (t Toolchain) newGzip() pkg.Artifact {
-		Description: "a generic library support script",
-		Website:     "https://www.gnu.org/software/libtool/",
-	}
-}
-
-func (t Toolchain) newGzip() (pkg.Artifact, string) {
 	const (
 		version  = "1.14"
 		checksum = "NWhjUavnNfTDFkZJyAUonL9aCOak8GVajWX2OMlzpFnuI0ErpBFyj88mz2xSjz0q"
 	)
-	return t.NewPackage("gzip", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("gzip", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/gzip/gzip-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), nil, &MakeHelper{
+	), &MakeAttr{
 		// dependency loop
 		SkipCheck: true,
-	}), version
+	})
 }
-func init() {
+func init() { artifactsF[Gzip] = Toolchain.newGzip }
-	artifactsM[Gzip] = Metadata{
-		f: Toolchain.newGzip,
 
-		Name:        "gzip",
+func (t Toolchain) newGettext() pkg.Artifact {
-		Description: "a popular data compression program",
-		Website:     "https://www.gnu.org/software/gzip/",
-	}
-}
-
-func (t Toolchain) newGettext() (pkg.Artifact, string) {
 	const (
 		version  = "1.0"
 		checksum = "3MasKeEdPeFEgWgzsBKk7JqWqql1wEMbgPmzAfs-mluyokoW0N8oQVxPQoOnSdgC"
 	)
-	return t.NewPackage("gettext", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("gettext", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/gettext/gettext-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &PackageAttr{
+	), &MakeAttr{
 		Writable: true,
 		ScriptEarly: `
+cd /usr/src/gettext
 test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
 
 test_disable '#!/bin/sh' gettext-tools/tests/msgcat-22
@@ -230,36 +158,29 @@ test_disable 'int main(){return 0;}' gettext-tools/gnulib-tests/test-stdcountof-
 
 touch gettext-tools/autotools/archive.dir.tar
 `,
-	}, (*MakeHelper)(nil),
+	},
-		Diffutils,
+		t.Load(Diffutils),
-		Gzip,
+		t.Load(Gzip),
-		Sed,
+		t.Load(Sed),
 
-		KernelHeaders,
+		t.Load(KernelHeaders),
-	), version
+	)
 }
-func init() {
+func init() { artifactsF[Gettext] = Toolchain.newGettext }
-	artifactsM[Gettext] = Metadata{
-		f: Toolchain.newGettext,
 
-		Name:        "gettext",
+func (t Toolchain) newDiffutils() pkg.Artifact {
-		Description: "tools for producing multi-lingual messages",
-		Website:     "https://www.gnu.org/software/gettext/",
-	}
-}
-
-func (t Toolchain) newDiffutils() (pkg.Artifact, string) {
 	const (
 		version  = "3.12"
 		checksum = "9J5VAq5oA7eqwzS1Yvw-l3G5o-TccUrNQR3PvyB_lgdryOFAfxtvQfKfhdpquE44"
 	)
-	return t.NewPackage("diffutils", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("diffutils", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/diffutils/diffutils-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &PackageAttr{
+	), &MakeAttr{
 		Writable: true,
 		ScriptEarly: `
+cd /usr/src/diffutils
 test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
 
 test_disable '#!/bin/sh' gnulib-tests/test-c32ispunct.sh
@@ -267,454 +188,254 @@ test_disable 'int main(){return 0;}' gnulib-tests/test-c32ispunct.c
 test_disable '#!/bin/sh' tests/cmp
 `,
 		Flag: TEarly,
-	}, (*MakeHelper)(nil)), version
+	})
 }
-func init() {
+func init() { artifactsF[Diffutils] = Toolchain.newDiffutils }
-	artifactsM[Diffutils] = Metadata{
-		f: Toolchain.newDiffutils,
 
-		Name:        "diffutils",
+func (t Toolchain) newPatch() pkg.Artifact {
-		Description: "several programs related to finding differences between files",
-		Website:     "https://www.gnu.org/software/diffutils/",
-	}
-}
-
-func (t Toolchain) newPatch() (pkg.Artifact, string) {
 	const (
 		version  = "2.8"
 		checksum = "MA0BQc662i8QYBD-DdGgyyfTwaeALZ1K0yusV9rAmNiIsQdX-69YC4t9JEGXZkeR"
 	)
-	return t.NewPackage("patch", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("patch", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/patch/patch-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &PackageAttr{
+	), &MakeAttr{
 		Writable: true,
 		ScriptEarly: `
+cd /usr/src/patch
 test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
 
 test_disable '#!/bin/sh' tests/ed-style
 test_disable '#!/bin/sh' tests/need-filename
 `,
 		Flag: TEarly,
-	}, (*MakeHelper)(nil)), version
+	})
 }
-func init() {
+func init() { artifactsF[Patch] = Toolchain.newPatch }
-	artifactsM[Patch] = Metadata{
-		f: Toolchain.newPatch,
 
-		Name:        "patch",
+func (t Toolchain) newBash() pkg.Artifact {
-		Description: "a program to apply diff output to files",
-		Website:     "https://savannah.gnu.org/projects/patch/",
-	}
-}
-
-func (t Toolchain) newBash() (pkg.Artifact, string) {
 	const (
 		version  = "5.3"
 		checksum = "4LQ_GRoB_ko-Ih8QPf_xRKA02xAm_TOxQgcJLmFDT6udUPxTAWrsj-ZNeuTusyDq"
 	)
-	return t.NewPackage("bash", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("bash", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/bash/bash-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &PackageAttr{
+	), &MakeAttr{
-		Flag: TEarly,
-	}, &MakeHelper{
 		Script: "ln -s bash /work/system/bin/sh\n",
 		Configure: [][2]string{
 			{"without-bash-malloc"},
 		},
-	}), version
+		Flag: TEarly,
+	})
 }
-func init() {
+func init() { artifactsF[Bash] = Toolchain.newBash }
-	artifactsM[Bash] = Metadata{
-		f: Toolchain.newBash,
 
-		Name:        "bash",
+func (t Toolchain) newCoreutils() pkg.Artifact {
-		Description: "the Bourne Again SHell",
-		Website:     "https://www.gnu.org/software/bash/",
-	}
-}
-
-func (t Toolchain) newCoreutils() (pkg.Artifact, string) {
 	const (
 		version  = "9.9"
 		checksum = "B1_TaXj1j5aiVIcazLWu8Ix03wDV54uo2_iBry4qHG6Y-9bjDpUPlkNLmU_3Nvw6"
 	)
-	return t.NewPackage("coreutils", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("coreutils", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/coreutils/coreutils-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &PackageAttr{
+	), &MakeAttr{
 		Writable: true,
 		ScriptEarly: `
+cd /usr/src/coreutils
 test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
 
 test_disable '#!/bin/sh' gnulib-tests/test-c32ispunct.sh
 test_disable '#!/bin/sh' tests/split/line-bytes.sh
 test_disable '#!/bin/sh' tests/dd/no-allocate.sh
-test_disable '#!/bin/sh' tests/env/env.sh
 test_disable 'int main(){return 0;}' gnulib-tests/test-chown.c
 test_disable 'int main(){return 0;}' gnulib-tests/test-fchownat.c
 test_disable 'int main(){return 0;}' gnulib-tests/test-lchown.c
 `,
 		Flag: TEarly,
-	}, &MakeHelper{
-		Configure: [][2]string{
-			{"enable-single-binary", "symlinks"},
 	},
-	},
+		t.Load(Perl),
-		Perl,
+		t.Load(Bash),
-		Bash,
 
-		KernelHeaders,
+		t.Load(KernelHeaders),
-	), version
-}
-func init() {
-	artifactsM[Coreutils] = Metadata{
-		f: Toolchain.newCoreutils,
-
-		Name:        "coreutils",
-		Description: "the basic file, shell and text manipulation utilities",
-		Website:     "https://www.gnu.org/software/coreutils/",
-	}
-}
-
-func (t Toolchain) newTexinfo() (pkg.Artifact, string) {
-	const (
-		version  = "7.2"
-		checksum = "9EelM5b7QGMAY5DKrAm_El8lofBGuFWlaBPSBhh7l_VQE8054MBmC0KBvGrABqjv"
 	)
-	return t.NewPackage("texinfo", version, pkg.NewHTTPGetTar(
-		nil, "https://ftpmirror.gnu.org/gnu/texinfo/texinfo-"+version+".tar.gz",
-		mustDecode(checksum),
-		pkg.TarGzip,
-	), nil, &MakeHelper{
-		// nonstandard glibc extension
-		SkipCheck: true,
-	},
-		Perl,
-	), version
 }
-func init() {
+func init() { artifactsF[Coreutils] = Toolchain.newCoreutils }
-	artifactsM[Texinfo] = Metadata{
-		f: Toolchain.newTexinfo,
 
-		Name:        "texinfo",
+func (t Toolchain) newGperf() pkg.Artifact {
-		Description: "the GNU square-wheel-reinvension of man pages",
-		Website:     "https://www.gnu.org/software/texinfo/",
-	}
-}
-
-func (t Toolchain) newGperf() (pkg.Artifact, string) {
 	const (
 		version  = "3.3"
 		checksum = "RtIy9pPb_Bb8-31J2Nw-rRGso2JlS-lDlVhuNYhqR7Nt4xM_nObznxAlBMnarJv7"
 	)
-	return t.NewPackage("gperf", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("gperf", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gperf/gperf-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), nil, (*MakeHelper)(nil),
+	), nil,
-		Diffutils,
+		t.Load(Diffutils),
-	), version
+	)
 }
-func init() {
+func init() { artifactsF[Gperf] = Toolchain.newGperf }
-	artifactsM[Gperf] = Metadata{
-		f: Toolchain.newGperf,
 
-		Name:        "gperf",
+func (t Toolchain) newGawk() pkg.Artifact {
-		Description: "a perfect hash function generator",
-		Website:     "https://www.gnu.org/software/gperf/",
-	}
-}
-
-func (t Toolchain) newGawk() (pkg.Artifact, string) {
 	const (
 		version  = "5.3.2"
 		checksum = "uIs0d14h_d2DgMGYwrPtegGNyt_bxzG3D6Fe-MmExx_pVoVkQaHzrtmiXVr6NHKk"
 	)
-	return t.NewPackage("gawk", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("gawk", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/gawk/gawk-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &PackageAttr{
+	), &MakeAttr{
 		Flag: TEarly,
-	}, &MakeHelper{
+
 		// dependency loop
 		SkipCheck: true,
-	}), version
+	})
 }
-func init() {
+func init() { artifactsF[Gawk] = Toolchain.newGawk }
-	artifactsM[Gawk] = Metadata{
-		f: Toolchain.newGawk,
 
-		Name:        "gawk",
+func (t Toolchain) newGrep() pkg.Artifact {
-		Description: "an implementation of awk with GNU extensions",
-		Website:     "https://www.gnu.org/software/gawk/",
-	}
-}
-
-func (t Toolchain) newGrep() (pkg.Artifact, string) {
 	const (
 		version  = "3.12"
 		checksum = "qMB4RjaPNRRYsxix6YOrjE8gyAT1zVSTy4nW4wKW9fqa0CHYAuWgPwDTirENzm_1"
 	)
-	return t.NewPackage("grep", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("grep", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/grep/grep-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &PackageAttr{
+	), &MakeAttr{
 		Writable: true,
 		ScriptEarly: `
+cd /usr/src/grep
+
 test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
 
 test_disable '#!/bin/sh' gnulib-tests/test-c32ispunct.sh
 test_disable 'int main(){return 0;}' gnulib-tests/test-c32ispunct.c
 `,
-	}, (*MakeHelper)(nil),
+	},
-		Diffutils,
+		t.Load(Diffutils),
-	), version
+	)
 }
-func init() {
+func init() { artifactsF[Grep] = Toolchain.newGrep }
-	artifactsM[Grep] = Metadata{
-		f: Toolchain.newGrep,
 
-		Name:        "grep",
+func (t Toolchain) newFindutils() pkg.Artifact {
-		Description: "searches input for lines containing a match to a pattern",
-		Website:     "https://www.gnu.org/software/grep/",
-	}
-}
-
-func (t Toolchain) newFindutils() (pkg.Artifact, string) {
 	const (
 		version  = "4.10.0"
 		checksum = "ZXABdNBQXL7QjTygynRRTdXYWxQKZ0Wn5eMd3NUnxR0xaS0u0VfcKoTlbo50zxv6"
 	)
-	return t.NewPackage("findutils", version, pkg.NewHTTPGet(
+	return t.NewViaMake("findutils", version, pkg.NewHTTPGet(
 		nil, "https://ftpmirror.gnu.org/gnu/findutils/findutils-"+version+".tar.xz",
 		mustDecode(checksum),
-	), &PackageAttr{
+	), &MakeAttr{
-		SourceKind: sourceTarXZ,
+		SourceSuffix: ".tar.xz",
 		ScriptEarly: `
+cd /usr/src/
+tar xf findutils.tar.xz
+mv findutils-` + version + ` findutils
+
+cd findutils
 echo '#!/bin/sh' > gnulib-tests/test-c32ispunct.sh
 echo 'int main(){return 0;}' > tests/xargs/test-sigusr.c
 `,
-	}, (*MakeHelper)(nil),
-		Diffutils,
-		XZ,
-		Sed,
-	), version
-}
-func init() {
-	artifactsM[Findutils] = Metadata{
-		f: Toolchain.newFindutils,
-
-		Name:        "findutils",
-		Description: "the basic directory searching utilities",
-		Website:     "https://www.gnu.org/software/findutils/",
-	}
-}
-
-func (t Toolchain) newBC() (pkg.Artifact, string) {
-	const (
-		version  = "1.08.2"
-		checksum = "8h6f3hjV80XiFs6v9HOPF2KEyg1kuOgn5eeFdVspV05ODBVQss-ey5glc8AmneLy"
-	)
-	return t.NewPackage("bc", version, pkg.NewHTTPGetTar(
-		nil, "https://ftpmirror.gnu.org/gnu/bc/bc-"+version+".tar.gz",
-		mustDecode(checksum),
-		pkg.TarGzip,
-	), &PackageAttr{
-		// source expected to be writable
-		Writable: true,
-		Chmod:    true,
-	}, (*MakeHelper)(nil),
-		Perl,
-		Texinfo,
-	), version
-}
-func init() {
-	artifactsM[BC] = Metadata{
-		f: Toolchain.newBC,
-
-		Name:        "bc",
-		Description: "an arbitrary precision numeric processing language",
-		Website:     "https://www.gnu.org/software/bc/",
-	}
-}
-
-func (t Toolchain) newLibiconv() (pkg.Artifact, string) {
-	const (
-		version  = "1.18"
-		checksum = "iV5q3VxP5VPdJ-X7O5OQI4fGm8VjeYb5viLd1L3eAHg26bbHb2_Qn63XPF3ucVZr"
-	)
-	return t.NewPackage("libiconv", version, pkg.NewHTTPGetTar(
-		nil, "https://ftpmirror.gnu.org/gnu/libiconv/libiconv-"+version+".tar.gz",
-		mustDecode(checksum),
-		pkg.TarGzip,
-	), nil, (*MakeHelper)(nil)), version
-}
-func init() {
-	artifactsM[Libiconv] = Metadata{
-		f: Toolchain.newLibiconv,
-
-		Name:        "libiconv",
-		Description: "iconv implementation independent of glibc",
-		Website:     "https://www.gnu.org/software/libiconv/",
-	}
-}
-
-func (t Toolchain) newTar() (pkg.Artifact, string) {
-	const (
-		version  = "1.35"
-		checksum = "zSaoSlVUDW0dSfm4sbL4FrXLFR8U40Fh3zY5DWhR5NCIJ6GjU6Kc4VZo2-ZqpBRA"
-	)
-	return t.NewPackage("tar", version, pkg.NewHTTPGetTar(
-		nil, "https://ftpmirror.gnu.org/gnu/tar/tar-"+version+".tar.gz",
-		mustDecode(checksum),
-		pkg.TarGzip,
-	), nil, &MakeHelper{
-		Configure: [][2]string{
-			{"disable-acl"},
-			{"without-posix-acls"},
-			{"without-xattrs"},
 	},
-		Check: []string{
+		t.Load(Diffutils),
-			// very expensive
+		t.Load(XZ),
-			"TARTEST_SKIP_LARGE_FILES=1",
+		t.Load(Sed),
-
+	)
-			`TESTSUITEFLAGS="-j$(nproc)"`,
-			"check",
-		},
-	},
-		Diffutils,
-
-		Gzip,
-		Bzip2,
-		Zstd,
-	), version
 }
-func init() {
+func init() { artifactsF[Findutils] = Toolchain.newFindutils }
-	artifactsM[Tar] = Metadata{
-		f: Toolchain.newTar,
 
-		Name:        "tar",
+func (t Toolchain) newBinutils() pkg.Artifact {
-		Description: "provides the ability to create tar archives",
-		Website:     "https://www.gnu.org/software/tar/",
-	}
-}
-
-func (t Toolchain) newBinutils() (pkg.Artifact, string) {
 	const (
 		version  = "2.45"
 		checksum = "hlLtqqHDmzAT2OQVHaKEd_io2DGFvJkaeS-igBuK8bRRir7LUKGHgHYNkDVKaHTT"
 	)
-	return t.NewPackage("binutils", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("binutils", version, pkg.NewHTTPGetTar(
 		nil, "https://ftpmirror.gnu.org/gnu/binutils/binutils-"+version+".tar.bz2",
 		mustDecode(checksum),
 		pkg.TarBzip2,
-	), nil, (*MakeHelper)(nil),
+	), &MakeAttr{
-		Bash,
+		ScriptConfigured: `
-	), version
+make "-j$(nproc)"
+`,
+	},
+		t.Load(Bash),
+	)
 }
-func init() {
+func init() { artifactsF[Binutils] = Toolchain.newBinutils }
-	artifactsM[Binutils] = Metadata{
-		f: Toolchain.newBinutils,
 
-		Name:        "binutils",
+func (t Toolchain) newGMP() pkg.Artifact {
-		Description: "a collection of binary tools",
-		Website:     "https://www.gnu.org/software/binutils/",
-	}
-}
-
-func (t Toolchain) newGMP() (pkg.Artifact, string) {
 	const (
 		version  = "6.3.0"
 		checksum = "yrgbgEDWKDdMWVHh7gPbVl56-sRtVVhfvv0M_LX7xMUUk_mvZ1QOJEAnt7g4i3k5"
 	)
-	return t.NewPackage("gmp", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("gmp", version, pkg.NewHTTPGetTar(
 		nil, "https://gcc.gnu.org/pub/gcc/infrastructure/"+
 			"gmp-"+version+".tar.bz2",
 		mustDecode(checksum),
 		pkg.TarBzip2,
-	), nil, (*MakeHelper)(nil),
+	), &MakeAttr{
-		M4,
+		ScriptConfigured: `
-	), version
+make "-j$(nproc)"
+`,
+	},
+		t.Load(M4),
+	)
 }
-func init() {
+func init() { artifactsF[GMP] = Toolchain.newGMP }
-	artifactsM[GMP] = Metadata{
-		f: Toolchain.newGMP,
 
-		Name:        "gmp",
+func (t Toolchain) newMPFR() pkg.Artifact {
-		Description: "a free library for arbitrary precision arithmetic",
-		Website:     "https://gmplib.org/",
-	}
-}
-
-func (t Toolchain) newMPFR() (pkg.Artifact, string) {
 	const (
 		version  = "4.2.2"
 		checksum = "wN3gx0zfIuCn9r3VAn_9bmfvAYILwrRfgBjYSD1IjLqyLrLojNN5vKyQuTE9kA-B"
 	)
-	return t.NewPackage("mpfr", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("mpfr", version, pkg.NewHTTPGetTar(
 		nil, "https://gcc.gnu.org/pub/gcc/infrastructure/"+
 			"mpfr-"+version+".tar.bz2",
 		mustDecode(checksum),
 		pkg.TarBzip2,
-	), nil, (*MakeHelper)(nil),
+	), nil,
-		GMP,
+		t.Load(GMP),
-	), version
+	)
 }
-func init() {
+func init() { artifactsF[MPFR] = Toolchain.newMPFR }
-	artifactsM[MPFR] = Metadata{
-		f: Toolchain.newMPFR,
 
-		Name:        "mpfr",
+func (t Toolchain) newMPC() pkg.Artifact {
-		Description: "a C library for multiple-precision floating-point computations",
-		Website:     "https://www.mpfr.org/",
-	}
-}
-
-func (t Toolchain) newMPC() (pkg.Artifact, string) {
 	const (
 		version  = "1.3.1"
 		checksum = "o8r8K9R4x7PuRx0-JE3-bC5jZQrtxGV2nkB773aqJ3uaxOiBDCID1gKjPaaDxX4V"
 	)
-	return t.NewPackage("mpc", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("mpc", version, pkg.NewHTTPGetTar(
 		nil, "https://gcc.gnu.org/pub/gcc/infrastructure/"+
 			"mpc-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), nil, (*MakeHelper)(nil),
+	), nil,
-		GMP,
+		t.Load(GMP),
-		MPFR,
+		t.Load(MPFR),
-	), version
+	)
 }
-func init() {
+func init() { artifactsF[MPC] = Toolchain.newMPC }
-	artifactsM[MPC] = Metadata{
-		f: Toolchain.newMPC,
 
-		Name:        "mpc",
+func (t Toolchain) newGCC() pkg.Artifact {
-		Description: "a C library for the arithmetic of complex numbers",
-		Website:     "https://www.multiprecision.org/",
-	}
-}
-
-func (t Toolchain) newGCC() (pkg.Artifact, string) {
 	const (
 		version  = "15.2.0"
 		checksum = "TXJ5WrbXlGLzy1swghQTr4qxgDCyIZFgJry51XEPTBZ8QYbVmFeB4lZbSMtPJ-a1"
 	)
-	return t.NewPackage("gcc", version, pkg.NewHTTPGetTar(
+	return t.NewViaMake("gcc", version, t.NewPatchedSource(
+		"gcc", version,
+		pkg.NewHTTPGetTar(
 			nil, "https://ftp.tsukuba.wide.ad.jp/software/gcc/releases/"+
 				"gcc-"+version+"/gcc-"+version+".tar.gz",
 			mustDecode(checksum),
 			pkg.TarGzip,
-	), &PackageAttr{
+		), true, [2]string{"musl-off64_t-loff_t", `diff --git a/libgo/sysinfo.c b/libgo/sysinfo.c
-		Patches: [][2]string{
-			{"musl-off64_t-loff_t", `diff --git a/libgo/sysinfo.c b/libgo/sysinfo.c
 index 180f5c31d74..44d7ea73f7d 100644
 --- a/libgo/sysinfo.c
 +++ b/libgo/sysinfo.c
@@ -730,9 +451,7 @@ index 180f5c31d74..44d7ea73f7d 100644
 
  // The following section introduces explicit references to types and
  // constants of interest to support bootstrapping libgo using a
-`},
+`}, [2]string{"musl-legacy-lfs", `diff --git a/libgo/go/internal/syscall/unix/at_largefile.go b/libgo/go/internal/syscall/unix/at_largefile.go
-
-			{"musl-legacy-lfs", `diff --git a/libgo/go/internal/syscall/unix/at_largefile.go b/libgo/go/internal/syscall/unix/at_largefile.go
 index 82e0dcfd074..16151ecad1b 100644
 --- a/libgo/go/internal/syscall/unix/at_largefile.go
 +++ b/libgo/go/internal/syscall/unix/at_largefile.go
@@ -860,18 +579,11 @@ index f84860891e6..7efc9615985 100644
  }
 
  #endif
-`},
+`}), &MakeAttr{
-		},
-
 		ScriptEarly: `
 ln -s system/lib /
 ln -s system/lib /work/
 `,
-
-		// GCC spends most of its time in its many configure scripts, however
-		// it also saturates the CPU for a consequential amount of time.
-		Flag: TExclusive,
-	}, &MakeHelper{
 		Configure: [][2]string{
 			{"disable-multilib"},
 			{"with-multilib-list", `""`},
@@ -892,24 +604,20 @@ ln -s system/lib /work/
 		// well in its current state. That does not matter as long as the
 		// toolchain it produces passes its own test suite.
 		SkipCheck: true,
+
+		// GCC spends most of its time in its many configure scripts, however
+		// it also saturates the CPU for a consequential amount of time.
+		Flag: TExclusive,
 	},
-		Binutils,
+		t.Load(Binutils),
 
-		GMP,
+		t.Load(GMP),
-		MPFR,
+		t.Load(MPFR),
-		MPC,
+		t.Load(MPC),
 
-		Zlib,
+		t.Load(Zlib),
-		Libucontext,
+		t.Load(Libucontext),
-		KernelHeaders,
+		t.Load(KernelHeaders),
-	), version
+	)
-}
-func init() {
-	artifactsM[gcc] = Metadata{
-		f: Toolchain.newGCC,
-
-		Name:        "gcc",
-		Description: "The GNU Compiler Collection",
-		Website:     "https://www.gnu.org/software/gcc/",
-	}
 }
+func init() { artifactsF[gcc] = Toolchain.newGCC }

internal/rosa/go.go

@@ -62,7 +62,7 @@ ln -s \
 	)))
 }
 
-func (t Toolchain) newGoLatest() (pkg.Artifact, string) {
+func (t Toolchain) newGoLatest() pkg.Artifact {
 	var (
 		bootstrapEnv   []string
 		bootstrapExtra []pkg.Artifact
@@ -143,7 +143,7 @@ sed -i \
 	go125 := t.newGo(
 		"1.25.7",
 		"fyylHdBVRUobnBjYj3NKBaYPUw3kGmo2mEELiZonOYurPfbarNU1x77B99Fjut7Q",
-		[]string{"CGO_ENABLED=0"}, `
+		finalEnv, `
 sed -i \
 	's,/lib/ld-musl-`+linuxArch()+`.so.1,/system/bin/linker,' \
 	cmd/link/internal/`+runtime.GOARCH+`/obj.go
@@ -153,29 +153,6 @@ rm \
 `, go123,
 	)
 
-	const (
+	return go125
-		version  = "1.26.0"
-		checksum = "uHLcrgBc0NMcyTMDLRNAZIcOx0RyQlyekSl9xbWSwj3esEFWJysYLfLa3S8p39Nh"
-	)
-	return t.newGo(
-		version,
-		checksum,
-		finalEnv, `
-sed -i \
-	's,/lib/ld-musl-`+linuxArch()+`.so.1,/system/bin/linker,' \
-	cmd/link/internal/`+runtime.GOARCH+`/obj.go
-
-rm \
-	os/root_unix_test.go
-`, go125,
-	), version
-}
-func init() {
-	artifactsM[Go] = Metadata{
-		f: Toolchain.newGoLatest,
-
-		Name:        "go",
-		Description: "the Go programming language toolchain",
-		Website:     "https://go.dev/",
-	}
 }
+func init() { artifactsF[Go] = Toolchain.newGoLatest }

internal/rosa/gtk.go

@@ -1,59 +0,0 @@
-package rosa
-
-import (
-	"strings"
-
-	"hakurei.app/container/fhs"
-	"hakurei.app/internal/pkg"
-)
-
-func (t Toolchain) newGLib() (pkg.Artifact, string) {
-	const (
-		version  = "2.86.4"
-		checksum = "AfTjBrrxtXXPL6dFa1LfTe40PyPSth62CoIkM5m_VJTUngGLOFHw6I4XE7RGQE8G"
-	)
-	return t.NewPackage("glib", version, pkg.NewHTTPGet(
-		nil, "https://download.gnome.org/sources/glib/"+
-			strings.Join(strings.SplitN(version, ".", 3)[:2], ".")+
-			"/glib-"+version+".tar.xz",
-		mustDecode(checksum),
-	), &PackageAttr{
-		SourceKind: sourceTarXZ,
-
-		Paths: []pkg.ExecPath{
-			pkg.Path(fhs.AbsEtc.Append(
-				"machine-id",
-			), false, pkg.NewFile(
-				"glib-machine-id",
-				[]byte("ffffffffffffffffffffffffffffffff\n"),
-			)),
-			pkg.Path(AbsSystem.Append(
-				"var/lib/dbus/machine-id",
-			), false, pkg.NewFile(
-				"glib-machine-id",
-				[]byte("fefefefefefefefefefefefefefefefe\n"),
-			)),
-		},
-	}, &MesonHelper{
-		Setup: [][2]string{
-			{"Ddefault_library", "both"},
-		},
-	},
-		XZ,
-		Packaging,
-		Bash,
-
-		PCRE2,
-		Libffi,
-		Zlib,
-	), version
-}
-func init() {
-	artifactsM[GLib] = Metadata{
-		f: Toolchain.newGLib,
-
-		Name:        "glib",
-		Description: "the GNU library of miscellaneous stuff",
-		Website:     "https://gitlab.gnome.org/GNOME/glib/",
-	}
-}

internal/rosa/hakurei.go

@@ -1,9 +1,15 @@
 package rosa
 
-import "hakurei.app/internal/pkg"
+import (
+	"hakurei.app/internal/pkg"
+)
 
 func (t Toolchain) newHakurei(suffix, script string) pkg.Artifact {
-	return t.New("hakurei"+suffix+"-"+hakureiVersion, 0, []pkg.Artifact{
+	const (
+		version  = "0.3.4"
+		checksum = "wVwSLo75a2OnH5tgxNWXR_YhiOJUFnYM_9-sJtxAEOKhcPE0BJafs6PU8o5JzyCT"
+	)
+	return t.New("hakurei"+suffix+"-"+version, 0, []pkg.Artifact{
 		t.Load(Go),
 
 		t.Load(Gzip),
@@ -37,10 +43,214 @@ echo
 chmod -R +w /usr/src/hakurei
 cd /usr/src/hakurei
 
-HAKUREI_VERSION='v`+hakureiVersion+`'
+HAKUREI_VERSION='v`+version+`'
-`+script, pkg.Path(AbsUsrSrc.Append("hakurei"), true, t.NewPatchedSource(
+`+script, pkg.Path(AbsUsrSrc.Append("hakurei"), true, t.NewPatchedSource("hakurei", version, pkg.NewHTTPGetTar(
-		"hakurei", hakureiVersion, hakureiSource, true, hakureiPatches...,
+		nil, "https://git.gensokyo.uk/security/hakurei/archive/"+
-	)), pkg.Path(AbsUsrSrc.Append("hostname", "main.go"), false, pkg.NewFile(
+			"v"+version+".tar.gz",
+		mustDecode(checksum),
+		pkg.TarGzip,
+	), true, [2]string{"dist-00-tests", `From 67e453f5c4de915de23ecbe5980e595758f0f2fb Mon Sep 17 00:00:00 2001
+From: Ophestra <cat@gensokyo.uk>
+Date: Tue, 27 Jan 2026 06:49:48 +0900
+Subject: [PATCH] dist: run tests
+
+This used to be impossible due to nix jank which has been addressed.
+
+Signed-off-by: Ophestra <cat@gensokyo.uk>
+---
+ dist/release.sh          | 21 ++++++++++++++++-----
+ flake.nix                | 32 ++++++++++++++++++++------------
+ internal/acl/acl_test.go |  2 +-
+ package.nix              |  2 +-
+ 4 files changed, 38 insertions(+), 19 deletions(-)
+
+diff --git a/dist/release.sh b/dist/release.sh
+index 4dcb278..0ba9104 100755
+--- a/dist/release.sh
++++ b/dist/release.sh
+@@ -2,19 +2,30 @@
+ cd "$(dirname -- "$0")/.."
+ VERSION="${HAKUREI_VERSION:-untagged}"
+ pname="hakurei-${VERSION}"
+-out="dist/${pname}"
++out="${DESTDIR:-dist}/${pname}"
+ 
++echo '# Preparing distribution files.'
+ mkdir -p "${out}"
+ cp -v "README.md" "dist/hsurc.default" "dist/install.sh" "${out}"
+ cp -rv "dist/comp" "${out}"
++echo
+ 
++echo '# Building hakurei.'
+ go generate ./...
+-go build -trimpath -v -o "${out}/bin/" -ldflags "-s -w -buildid= -extldflags '-static'
++go build -trimpath -v -o "${out}/bin/" -ldflags "-s -w
++  -buildid= -extldflags '-static'
+   -X hakurei.app/internal/info.buildVersion=${VERSION}
+   -X hakurei.app/internal/info.hakureiPath=/usr/bin/hakurei
+   -X hakurei.app/internal/info.hsuPath=/usr/bin/hsu
+   -X main.hakureiPath=/usr/bin/hakurei" ./...
++echo
+ 
+-rm -f "./${out}.tar.gz" && tar -C dist -czf "${out}.tar.gz" "${pname}"
+-rm -rf "./${out}"
+-(cd dist && sha512sum "${pname}.tar.gz" > "${pname}.tar.gz.sha512")
++echo '# Testing hakurei.'
++go test -ldflags='-buildid= -extldflags=-static' ./...
++echo
++
++echo '# Creating distribution.'
++rm -f "${out}.tar.gz" && tar -C "${out}/.." -vczf "${out}.tar.gz" "${pname}"
++rm -rf "${out}"
++(cd "${out}/.." && sha512sum "${pname}.tar.gz" > "${pname}.tar.gz.sha512")
++echo
+diff --git a/flake.nix b/flake.nix
+index 9e09c61..2340b92 100644
+--- a/flake.nix
++++ b/flake.nix
+@@ -143,19 +143,27 @@
+             "bin/mount.fuse.sharefs" = "${hakurei}/libexec/sharefs";
+           };
+ 
+-          dist = pkgs.runCommand "${hakurei.name}-dist" { buildInputs = hakurei.targetPkgs ++ [ pkgs.pkgsStatic.musl ]; } ''
+-            # go requires XDG_CACHE_HOME for the build cache
+-            export XDG_CACHE_HOME="$(mktemp -d)"
++          dist =
++            pkgs.runCommand "${hakurei.name}-dist"
++              {
++                buildInputs = hakurei.targetPkgs ++ [
++                  pkgs.pkgsStatic.musl
++                ];
++              }
++              ''
++                cd $(mktemp -d) \
++                    && cp -r ${hakurei.src}/. . \
++                    && chmod +w cmd && cp -r ${hsu.src}/. cmd/hsu/ \
++                    && chmod -R +w .
+ 
+-            # get a different workdir as go does not like /build
+-            cd $(mktemp -d) \
+-                && cp -r ${hakurei.src}/. . \
+-                && chmod +w cmd && cp -r ${hsu.src}/. cmd/hsu/ \
+-                && chmod -R +w .
+-
+-            export HAKUREI_VERSION="v${hakurei.version}"
+-            CC="clang -O3 -Werror" ./dist/release.sh && mkdir $out && cp -v "dist/hakurei-$HAKUREI_VERSION.tar.gz"* $out
+-          '';
++                CC="musl-clang -O3 -Werror -Qunused-arguments" \
++                GOCACHE="$(mktemp -d)" \
++                HAKUREI_TEST_SKIP_ACL=1 \
++                PATH="${pkgs.pkgsStatic.musl.bin}/bin:$PATH" \
++                DESTDIR="$out" \
++                HAKUREI_VERSION="v${hakurei.version}" \
++                  ./dist/release.sh
++              '';
+         }
+       );
+ 
+diff --git a/internal/acl/acl_test.go b/internal/acl/acl_test.go
+index af6da55..19ce45a 100644
+--- a/internal/acl/acl_test.go
++++ b/internal/acl/acl_test.go
+@@ -24,7 +24,7 @@ var (
+ )
+ 
+ func TestUpdate(t *testing.T) {
+-	if os.Getenv("GO_TEST_SKIP_ACL") == "1" {
++	if os.Getenv("HAKUREI_TEST_SKIP_ACL") == "1" {
+ 		t.Skip("acl test skipped")
+ 	}
+ 
+diff --git a/package.nix b/package.nix
+index 00c4401..2eaa2ec 100644
+--- a/package.nix
++++ b/package.nix
+@@ -89,7 +89,7 @@ buildGoModule rec {
+     CC = "clang -O3 -Werror";
+ 
+     # nix build environment does not allow acls
+-    GO_TEST_SKIP_ACL = 1;
++    HAKUREI_TEST_SKIP_ACL = 1;
+   };
+ 
+   buildInputs = [`}, [2]string{"container-tests", `From bf14a412e47344fff2681f4b24d1ecc7415bfcb0 Mon Sep 17 00:00:00 2001
+From: Ophestra <cat@gensokyo.uk>
+Date: Sat, 31 Jan 2026 10:59:56 +0900
+Subject: [PATCH] container: fix host-dependent test cases
+
+These are not fully controlled by hakurei and may change depending on host configuration.
+
+Signed-off-by: Ophestra <cat@gensokyo.uk>
+---
+ container/container_test.go | 27 +++++++++++++++------------
+ 1 file changed, 15 insertions(+), 12 deletions(-)
+
+diff --git a/container/container_test.go b/container/container_test.go
+index d737a18..98713cb 100644
+--- a/container/container_test.go
++++ b/container/container_test.go
+@@ -275,12 +275,12 @@ var containerTestCases = []struct {
+ 		),
+ 		earlyMnt(
+ 			ent("/", "/dev", "ro,nosuid,nodev,relatime", "tmpfs", "devtmpfs", ignore),
+-			ent("/null", "/dev/null", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
+-			ent("/zero", "/dev/zero", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
+-			ent("/full", "/dev/full", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
+-			ent("/random", "/dev/random", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
+-			ent("/urandom", "/dev/urandom", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
+-			ent("/tty", "/dev/tty", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
++			ent("/null", "/dev/null", ignore, "devtmpfs", "devtmpfs", ignore),
++			ent("/zero", "/dev/zero", ignore, "devtmpfs", "devtmpfs", ignore),
++			ent("/full", "/dev/full", ignore, "devtmpfs", "devtmpfs", ignore),
++			ent("/random", "/dev/random", ignore, "devtmpfs", "devtmpfs", ignore),
++			ent("/urandom", "/dev/urandom", ignore, "devtmpfs", "devtmpfs", ignore),
++			ent("/tty", "/dev/tty", ignore, "devtmpfs", "devtmpfs", ignore),
+ 			ent("/", "/dev/pts", "rw,nosuid,noexec,relatime", "devpts", "devpts", "rw,mode=620,ptmxmode=666"),
+ 			ent("/", "/dev/mqueue", "rw,nosuid,nodev,noexec,relatime", "mqueue", "mqueue", "rw"),
+ 			ent("/", "/dev/shm", "rw,nosuid,nodev,relatime", "tmpfs", "tmpfs", ignore),
+@@ -293,12 +293,12 @@ var containerTestCases = []struct {
+ 		),
+ 		earlyMnt(
+ 			ent("/", "/dev", "ro,nosuid,nodev,relatime", "tmpfs", "devtmpfs", ignore),
+-			ent("/null", "/dev/null", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
+-			ent("/zero", "/dev/zero", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
+-			ent("/full", "/dev/full", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
+-			ent("/random", "/dev/random", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
+-			ent("/urandom", "/dev/urandom", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
+-			ent("/tty", "/dev/tty", "rw,nosuid", "devtmpfs", "devtmpfs", ignore),
++			ent("/null", "/dev/null", ignore, "devtmpfs", "devtmpfs", ignore),
++			ent("/zero", "/dev/zero", ignore, "devtmpfs", "devtmpfs", ignore),
++			ent("/full", "/dev/full", ignore, "devtmpfs", "devtmpfs", ignore),
++			ent("/random", "/dev/random", ignore, "devtmpfs", "devtmpfs", ignore),
++			ent("/urandom", "/dev/urandom", ignore, "devtmpfs", "devtmpfs", ignore),
++			ent("/tty", "/dev/tty", ignore, "devtmpfs", "devtmpfs", ignore),
+ 			ent("/", "/dev/pts", "rw,nosuid,noexec,relatime", "devpts", "devpts", "rw,mode=620,ptmxmode=666"),
+ 			ent("/", "/dev/shm", "rw,nosuid,nodev,relatime", "tmpfs", "tmpfs", ignore),
+ 		),
+@@ -696,6 +696,9 @@ func init() {
+ 					mnt[i].VfsOptstr = strings.TrimSuffix(mnt[i].VfsOptstr, ",relatime")
+ 					mnt[i].VfsOptstr = strings.TrimSuffix(mnt[i].VfsOptstr, ",noatime")
+ 
++					cur.FsOptstr = strings.Replace(cur.FsOptstr, ",seclabel", "", 1)
++					mnt[i].FsOptstr = strings.Replace(mnt[i].FsOptstr, ",seclabel", "", 1)
++
+ 					if !cur.EqualWithIgnore(mnt[i], "\x00") {
+ 						fail = true
+ 						log.Printf("[FAIL] %s", cur)`}, [2]string{"dist-01-tarball-name", `diff --git a/dist/release.sh b/dist/release.sh
+index 0ba9104..2990ee1 100755
+--- a/dist/release.sh
++++ b/dist/release.sh
+@@ -1,7 +1,7 @@
+ #!/bin/sh -e
+ cd "$(dirname -- "$0")/.."
+ VERSION="${HAKUREI_VERSION:-untagged}"
+-pname="hakurei-${VERSION}"
++pname="hakurei-${VERSION}-$(go env GOARCH)"
+ out="${DESTDIR:-dist}/${pname}"
+
+ echo '# Preparing distribution files.'
+`}),
+	), pkg.Path(AbsUsrSrc.Append("hostname", "main.go"), false, pkg.NewFile(
 		"hostname.go",
 		[]byte(`
 package main
@@ -58,8 +268,7 @@ func main() {
 	)))
 }
 func init() {
-	artifactsM[Hakurei] = Metadata{
+	artifactsF[Hakurei] = func(t Toolchain) pkg.Artifact {
-		f: func(t Toolchain) (pkg.Artifact, string) {
 		return t.newHakurei("", `
 mkdir -p /work/system/libexec/hakurei/
 
@@ -67,7 +276,6 @@ echo '# Building hakurei.'
 go generate -v ./...
 go build -trimpath -v -o /work/system/libexec/hakurei -ldflags="-s -w
 	-buildid=
-	-linkmode external
 	-extldflags=-static
 	-X hakurei.app/internal/info.buildVersion="$HAKUREI_VERSION"
 	-X hakurei.app/internal/info.hakureiPath=/system/bin/hakurei
@@ -76,7 +284,7 @@ go build -trimpath -v -o /work/system/libexec/hakurei -ldflags="-s -w
 echo
 
 echo '# Testing hakurei.'
-go test -ldflags='-buildid= -linkmode external -extldflags=-static' ./...
+go test -ldflags='-buildid= -extldflags=-static' ./...
 echo
 
 mkdir -p /work/system/bin/
@@ -84,23 +292,12 @@ mkdir -p /work/system/bin/
 	hakurei \
 	sharefs \
 	../../bin/)
-`), hakureiVersion
+`)
-		},
-
-		Name:        "hakurei",
-		Description: "low-level userspace tooling for Rosa OS",
-		Website:     "https://hakurei.app/",
 	}
-	artifactsM[HakureiDist] = Metadata{
+	artifactsF[HakureiDist] = func(t Toolchain) pkg.Artifact {
-		f: func(t Toolchain) (pkg.Artifact, string) {
 		return t.newHakurei("-dist", `
 export HAKUREI_VERSION
 DESTDIR=/work /usr/src/hakurei/dist/release.sh
-`), hakureiVersion
+`)
-		},
-
-		Name:        "hakurei-dist",
-		Description: "low-level userspace tooling for Rosa OS (distribution tarball)",
-		Website:     "https://hakurei.app/",
 	}
 }

internal/rosa/hakurei_current.go

@@ -1,26 +0,0 @@
-//go:build current
-
-package rosa
-
-import (
-	_ "embed"
-
-	"hakurei.app/internal/pkg"
-)
-
-const hakureiVersion = "1.0-current"
-
-// hakureiSourceTarball is a compressed tarball of the hakurei source code.
-//
-//go:generate tar -zc -C ../.. --exclude .git --exclude *.tar.gz -f hakurei_current.tar.gz .
-//go:embed hakurei_current.tar.gz
-var hakureiSourceTarball []byte
-
-// hakureiSource is the source code at the time this package is compiled.
-var hakureiSource = pkg.NewTar(pkg.NewFile(
-	"hakurei-current.tar.gz",
-	hakureiSourceTarball,
-), pkg.TarGzip)
-
-// hakureiPatches are patches applied against the compile-time source tree.
-var hakureiPatches [][2]string

internal/rosa/hakurei_release.go

@@ -1,51 +0,0 @@
-//go:build !current
-
-package rosa
-
-import "hakurei.app/internal/pkg"
-
-const hakureiVersion = "0.3.5"
-
-// hakureiSource is the source code of a hakurei release.
-var hakureiSource = pkg.NewHTTPGetTar(
-	nil, "https://git.gensokyo.uk/security/hakurei/archive/"+
-		"v"+hakureiVersion+".tar.gz",
-	mustDecode("6Tn38NLezRD2d3aGdFg5qFfqn8_KvC6HwMKwJMPvaHmVw8xRgxn8B0PObswl2mOk"),
-	pkg.TarGzip,
-)
-
-// hakureiPatches are patches applied against a hakurei release.
-var hakureiPatches = [][2]string{
-	{"createTemp-error-injection", `diff --git a/container/dispatcher_test.go b/container/dispatcher_test.go
-index 5de37fc..fe0c4db 100644
---- a/container/dispatcher_test.go
-+++ b/container/dispatcher_test.go
-@@ -238,8 +238,11 @@ func sliceAddr[S any](s []S) *[]S { return &s }
-
- func newCheckedFile(t *testing.T, name, wantData string, closeErr error) osFile {
-        f := &checkedOsFile{t: t, name: name, want: wantData, closeErr: closeErr}
--       // check happens in Close, and cleanup is not guaranteed to run, so relying on it for sloppy implementations will cause sporadic test results
--       f.cleanup = runtime.AddCleanup(f, func(name string) { f.t.Fatalf("checkedOsFile %s became unreachable without a call to Close", name) }, f.name)
-+       // check happens in Close, and cleanup is not guaranteed to run, so relying
-+       // on it for sloppy implementations will cause sporadic test results
-+       f.cleanup = runtime.AddCleanup(f, func(name string) {
-+               panic("checkedOsFile " + name + " became unreachable without a call to Close")
-+       }, name)
-        return f
- }
-
-diff --git a/container/initplace_test.go b/container/initplace_test.go
-index afeddbe..1c2f20b 100644
---- a/container/initplace_test.go
-+++ b/container/initplace_test.go
-@@ -21,7 +21,7 @@ func TestTmpfileOp(t *testing.T) {
-                        Path: samplePath,
-                        Data: sampleData,
-                }, nil, nil, []stub.Call{
--                       call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, newCheckedFile(t, "tmp.32768", sampleDataString, nil), stub.UniqueError(5)),
-+                       call("createTemp", stub.ExpectArgs{"/", "tmp.*"}, (*checkedOsFile)(nil), stub.UniqueError(5)),
-                }, stub.UniqueError(5)},
-
-                {"Write", &Params{ParentPerm: 0700}, &TmpfileOp{
-`},
-}