internal/rosa/package/kernel: 6.12.94 to 6.18.37

Finally jumping from 6.12 to 6.18, and the patches can be dropped.

Signed-off-by: Ophestra <cat@gensokyo.uk>

.gitattributes

@@ -1 +0,0 @@
-*.az linguist-language=Azalea

.gitea/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Build for release
-        run: nix build --print-out-paths --print-build-logs ./test#dist
+        run: nix build --print-out-paths --print-build-logs .#dist
 
       - name: Release
         uses: https://gitea.com/actions/release-action@main

.gitea/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run NixOS test
-        run: nix build --out-link "result" --print-out-paths --print-build-logs ./test#checks.x86_64-linux.hakurei
+        run: nix build --out-link "result" --print-out-paths --print-build-logs .#checks.x86_64-linux.hakurei
 
       - name: Upload test output
         uses: actions/upload-artifact@v3
@@ -29,7 +29,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run NixOS test
-        run: nix build --out-link "result" --print-out-paths --print-build-logs ./test#checks.x86_64-linux.race
+        run: nix build --out-link "result" --print-out-paths --print-build-logs .#checks.x86_64-linux.race
 
       - name: Upload test output
         uses: actions/upload-artifact@v3
@@ -46,7 +46,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run NixOS test
-        run: nix build --out-link "result" --print-out-paths --print-build-logs ./test#checks.x86_64-linux.sandbox
+        run: nix build --out-link "result" --print-out-paths --print-build-logs .#checks.x86_64-linux.sandbox
 
       - name: Upload test output
         uses: actions/upload-artifact@v3
@@ -63,7 +63,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run NixOS test
-        run: nix build --out-link "result" --print-out-paths --print-build-logs ./test#checks.x86_64-linux.sandbox-race
+        run: nix build --out-link "result" --print-out-paths --print-build-logs .#checks.x86_64-linux.sandbox-race
 
       - name: Upload test output
         uses: actions/upload-artifact@v3
@@ -80,7 +80,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run NixOS test
-        run: nix build --out-link "result" --print-out-paths --print-build-logs ./test#checks.x86_64-linux.sharefs
+        run: nix build --out-link "result" --print-out-paths --print-build-logs .#checks.x86_64-linux.sharefs
 
       - name: Upload test output
         uses: actions/upload-artifact@v3
@@ -103,7 +103,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run checks
-        run: nix --print-build-logs --experimental-features 'nix-command flakes' flake check ./test
+        run: nix --print-build-logs --experimental-features 'nix-command flakes' flake check
 
   dist:
     name: Create distribution
@@ -116,9 +116,9 @@ jobs:
         id: build-test
         run: >-
           export HAKUREI_REV="$(git rev-parse --short HEAD)" &&
-          sed -i.old 's/version = /version = "0.0.0-'$HAKUREI_REV'"; # version = /' test/package.nix &&
+          sed -i.old 's/version = /version = "0.0.0-'$HAKUREI_REV'"; # version = /' package.nix &&
-          nix build --print-out-paths --print-build-logs ./test#dist &&
+          nix build --print-out-paths --print-build-logs .#dist &&
-          mv test/{package.nix.old,package.nix} &&
+          mv package.nix.old package.nix &&
           echo "rev=$HAKUREI_REV" >> $GITHUB_OUTPUT
 
       - name: Upload test build

.gitignore

@@ -1,5 +1,4 @@
 # produced by tools and text editors
-*.swp
 *.qcow2
 *.test
 *.out

README.md

@@ -11,7 +11,7 @@
   <a href="https://git.gensokyo.uk/rosa/hakurei/actions"><img src="https://git.gensokyo.uk/rosa/hakurei/actions/workflows/test.yml/badge.svg?branch=staging&style=flat-square" alt="Gitea Workflow Status" /></a>
   <br/>
   <a href="https://git.gensokyo.uk/rosa/hakurei/releases"><img src="https://img.shields.io/gitea/v/release/rosa/hakurei?gitea_url=https%3A%2F%2Fgit.gensokyo.uk&color=purple" alt="Release" /></a>
-  <a href="https://git.gensokyo.uk/rosa/hakurei/src/branch/master/LICENSE"><img src="https://img.shields.io/badge/license-MIT-pink" alt="MIT License" /></a>
+  <a href="https://goreportcard.com/report/hakurei.app"><img src="https://goreportcard.com/badge/hakurei.app" alt="Go Report Card" /></a>
   <a href="https://hakurei.app"><img src="https://img.shields.io/website?url=https%3A%2F%2Fhakurei.app" alt="Website" /></a>
 </p>
 
@@ -58,3 +58,8 @@ package [internal/rosa](https://pkg.go.dev/hakurei.app/internal/rosa).
 
 New dependencies will generally not be added. Patches adding new dependencies
 are very likely to be rejected.
+
+## NixOS Module (deprecated)
+
+The NixOS module is in maintenance mode and will be removed once planterette is
+feature-complete. Full module documentation can be found [here](options.md).

cmd/app/app.go

@@ -4,7 +4,6 @@ import (
 	"bufio"
 	"fmt"
 	"io"
-	"os"
 	"strconv"
 	"strings"
 
@@ -336,19 +335,3 @@ func parse(
 
 	return &c, nil
 }
-
-// list prints names of non-hidden entries in pathname.
-func list(pathname *check.Absolute, dir bool) error {
-	dents, err := os.ReadDir(pathname.String())
-	if err != nil {
-		return err
-	}
-	for _, dent := range dents {
-		name := dent.Name()
-		if (dent.IsDir() != dir) || (len(name) > 0 && name[0] == '.') {
-			continue
-		}
-		fmt.Println(dent.Name())
-	}
-	return nil
-}

cmd/app/main.go

@@ -7,6 +7,7 @@ package main
 import (
 	"context"
 	"errors"
+	"fmt"
 	"io"
 	"log"
 	"os"
@@ -76,7 +77,17 @@ func main() {
 			"enter", "Enter mutable state template",
 			func(args []string) error {
 				if len(args) != 1 {
-					return list(template, true)
+					dents, err := os.ReadDir(template.String())
+					if err != nil {
+						return err
+					}
+					for _, dent := range dents {
+						if !dent.IsDir() {
+							continue
+						}
+						fmt.Println(dent.Name())
+					}
+					return nil
 				}
 
 				config := hst.Config{
@@ -148,7 +159,17 @@ func main() {
 			"run", "Start the named application",
 			func(args []string) error {
 				if len(args) < 1 {
-					return list(base.Append("app"), false)
+					dents, err := os.ReadDir(base.Append("app").String())
+					if err != nil {
+						return err
+					}
+					for _, dent := range dents {
+						if dent.IsDir() {
+							continue
+						}
+						fmt.Println(dent.Name())
+					}
+					return nil
 				}
 
 				var config *hst.Config

cmd/dist/VERSION

@@ -1 +1 @@
-v0.4.6
+v0.4.5

cmd/dist/main.go

@@ -57,7 +57,7 @@ func main() {
 	verbose := os.Getenv("VERBOSE") != ""
 	runTests := os.Getenv("HAKUREI_DIST_MAKE") == ""
 	version = getenv("HAKUREI_VERSION", strings.TrimSpace(version))
-	prefix := getenv("PREFIX", "/usr/local")
+	prefix := getenv("PREFIX", "/usr")
 	destdir := getenv("DESTDIR", "dist")
 
 	if verbose {
@@ -217,7 +217,7 @@ func main() {
 	mustWriteFile("comp/", nil, os.ModeDir|0755)
 	mustWriteFile("comp/_hakurei", comp, 0644)
 	mustWriteFile("install.sh", []byte(`#!/bin/sh -e
-cd "$(dirname -- "$0")"
+cd "$(dirname -- "$0")" || exit 1
 
 install -vDm0755 "bin/hakurei" "${DESTDIR}`+prefix+`/bin/hakurei"
 install -vDm0755 "bin/sharefs" "${DESTDIR}`+prefix+`/bin/sharefs"
@@ -230,7 +230,7 @@ fi
 install -vDm0644 "comp/_hakurei" "${DESTDIR}`+prefix+`/share/zsh/site-functions/_hakurei"
 `), 0755)
 
-	mustWriteFromPath("LICENSE", "LICENSE", 0)
+	mustWriteFromPath("README.md", "README.md", 0)
 	mustWriteFile("hsurc.default", []byte("1000 0"), 0400)
 	mustWriteFromPath("bin/hsu", filepath.Join(s, "hsu"), 04511)
 	for _, name := range []string{

cmd/hakurei/command_test.go

@@ -19,9 +19,10 @@ func TestHelp(t *testing.T) {
 		want string
 	}{
 		{
-			"main", []string{}, `usage: hakurei [-h | --help] [-v] [--insecure] [--json] <command> [<args>]
+			"main", []string{}, `
+Usage:	hakurei [-h | --help] [-v] [--insecure] [--json] COMMAND [OPTIONS]
 
-commands:
+Commands:
     run         Load and start container from configuration file
     exec        Configure and start a permissive container
     show        Show live or local instance configuration
@@ -34,14 +35,10 @@ commands:
 `,
 		},
 		{
-			"exec", []string{"exec", "-h"}, `usage: hakurei exec [-h | --help] [--dbus-config <value>]
+			"exec", []string{"exec", "-h"}, `
-                    [--dbus-system <value>] [--mpris] [--dbus-log]
+Usage:	hakurei exec [-h | --help] [--dbus-config <value>] [--dbus-system <value>] [--mpris] [--dbus-log] [--id <value>] [-a <int>] [-g <value>] [-d <value>] [-u <value>] [--policy <value>] [--priority <int>] [--private-runtime] [--private-tmpdir] [--wayland] [-X] [--dbus] [--pipewire] [--pulse] COMMAND [OPTIONS]
-                    [--id <value>] [-a <int>] [-g <value>] [-d <value>]
-                    [-u <value>] [--policy <value>] [--priority <int>]
-                    [--private-runtime] [--private-tmpdir] [--wayland] [-X]
-                    [--dbus] [--pipewire] [--pulse] <command> [<args>]
 
-flags:
+Flags:
   -X	Enable direct connection to X11
   -a int
     	Application identity

cmd/hsu/package.nix

@@ -8,7 +8,7 @@ buildGoModule {
   pname = "${hakurei.pname}-hsu";
   inherit (hakurei) version;
 
-  src = ../cmd/hsu;
+  src = ./.;
   inherit (hakurei) vendorHash;
   env.CGO_ENABLED = 0;
 

cmd/mbf/cache.go

@@ -5,7 +5,6 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
-	"strconv"
 	"testing"
 
 	"hakurei.app/check"
@@ -22,66 +21,41 @@ type cache struct {
 	// Should generally not be used directly.
 	c *pkg.Cache
 
-	attr pkg.CacheAttr
+	cures, jobs int
 	// Primarily to work around missing landlock LSM.
 	hostAbstract bool
 	// Set SCHED_IDLE.
 	idle bool
 	// Unset [pkg.CSuppressInit].
 	verboseInit bool
-	// Whether to enable output colours.
-	color bool
-	// Unset [pkg.CExternShallow].
-	deep bool
 	// Loaded artifact of [rosa.QEMU].
 	qemu pkg.Artifact
 
 	base, mirror string
 }
 
-// writeTitle sets title of the terminal connected to [message.Msg].
-func writeTitle(msg message.Msg, s string) {
-	msg.Suspend()
-	w := msg.GetLogger().Writer()
-	_, _ = w.Write([]byte("\x1b]0;" + s + "\a"))
-	msg.Resume()
-}
-
 // open opens the underlying [pkg.Cache].
 func (cache *cache) open() (err error) {
 	if cache.c != nil {
 		return os.ErrInvalid
 	}
 
-	var hostname string
-	if hostname, err = os.Hostname(); err != nil {
-		return
-	}
-
 	var base *check.Absolute
 	if cache.base, err = filepath.Abs(cache.base); err != nil {
 		return
 	} else if base, err = check.NewAbs(cache.base); err != nil {
 		return
 	}
-	var notify chan bool
 
+	var flags int
 	if cache.idle {
-		cache.attr.Flags |= pkg.CSchedIdle
+		flags |= pkg.CSchedIdle
 	}
 	if cache.hostAbstract {
-		cache.attr.Flags |= pkg.CHostAbstract
+		flags |= pkg.CHostAbstract
 	}
 	if !cache.verboseInit {
-		cache.attr.Flags |= pkg.CSuppressInit
+		flags |= pkg.CSuppressInit
-	}
-	if !cache.deep {
-		cache.attr.Flags |= pkg.CExternShallow
-	}
-	if cache.color {
-		cache.attr.Flags |= pkg.CColourOutput
-		notify = make(chan bool, 1<<12)
-		cache.attr.Notify = notify
 	}
 
 	done := make(chan struct{})
@@ -103,8 +77,10 @@ func (cache *cache) open() (err error) {
 	cache.c, err = pkg.Open(
 		cache.ctx,
 		cache.msg,
+		flags,
+		cache.cures,
+		cache.jobs,
 		base,
-		&cache.attr,
 	)
 	if err != nil {
 		return
@@ -119,40 +95,13 @@ func (cache *cache) open() (err error) {
 			return
 		}
 		var r rosa.Remote
-		if r, err = rosa.NewRemote(http.DefaultClient, cache.mirror, pub); err != nil {
+		if r, err = rosa.NewRemote(cache.mirror, pub, http.DefaultClient); err != nil {
 			cache.c.Close()
 			return err
 		}
 		cache.c.SetExternal(r)
 	}
 
-	if cache.attr.Notify != nil {
-		cache.msg.Suspend()
-		_, _ = cache.msg.GetLogger().Writer().Write([]byte("\x1b[22;0t"))
-		cache.msg.Resume()
-
-		prefix := hostname + ": mbf "
-		go func() {
-			var n, nc uint64
-			for enter := range notify {
-				if enter {
-					nc++
-				} else {
-					nc--
-					n++
-				}
-
-				if nc == 0 {
-					writeTitle(cache.msg, prefix[:len(prefix)-1])
-					continue
-				}
-				writeTitle(cache.msg, prefix+
-					"("+strconv.FormatUint(nc, 10)+
-					" running, "+strconv.FormatUint(n, 10)+" complete)")
-			}
-		}()
-	}
-
 	if cache.qemu != nil {
 		var pathname *check.Absolute
 		pathname, _, err = cache.c.Cure(cache.qemu)
@@ -173,11 +122,6 @@ func (cache *cache) open() (err error) {
 func (cache *cache) Close() {
 	if cache.c != nil {
 		cache.c.Close()
-		if cache.attr.Notify != nil {
-			cache.msg.Suspend()
-			_, _ = cache.msg.GetLogger().Writer().Write([]byte("\x1b[23;0t"))
-			cache.msg.Resume()
-		}
 	}
 }
 

cmd/mbf/daemon_test.go

@@ -28,8 +28,8 @@ func TestNoReply(t *testing.T) {
 	c, err := pkg.Open(
 		t.Context(),
 		message.New(log.New(os.Stderr, "cir: ", 0)),
+		0, 0, 0,
 		check.MustAbs(t.TempDir()),
-		nil,
 	)
 	if err != nil {
 		t.Fatalf("Open: error = %v", err)
@@ -63,7 +63,7 @@ func TestNoReply(t *testing.T) {
 	}
 
 	<-done
-	wantIdent := pkg.MustDecode("bpVsJ69hdKPBntMh_u777g7-quFNVmMlBJQOlM_thiQa9JnOFLAbe5OlR4zNjZ32")
+	wantIdent := pkg.MustDecode("fiZf-ZY_Yq6qxJNrHbMiIPYCsGkUiKCRsZrcSELXTqZWtCnESlHmzV5ThhWWGGYG")
 	if gotIdent := c.Ident(a).Value(); gotIdent != wantIdent {
 		t.Errorf(
 			"cureFromIR: %s, want %s",
@@ -124,7 +124,7 @@ func TestDaemon(t *testing.T) {
 	cancel()
 	<-done
 
-	const want = "bpVsJ69hdKPBntMh_u777g7-quFNVmMlBJQOlM_thiQa9JnOFLAbe5OlR4zNjZ32"
+	const want = "fiZf-ZY_Yq6qxJNrHbMiIPYCsGkUiKCRsZrcSELXTqZWtCnESlHmzV5ThhWWGGYG"
 	if got := filepath.Base(p.String()); got != want {
 		t.Errorf("cureRemote: %s, want %s", got, want)
 	}
@@ -132,8 +132,8 @@ func TestDaemon(t *testing.T) {
 	wantLog := []string{
 		"",
 		"daemon: aborting all pending cures",
-		"daemon: attempting to cancel invalid artifact 58Vy_5beLZCvZX__KzRKyIE6vATleaZP1ZBxbqoWnekz9aZ1zkxNgcIUFI5V1_Jf",
+		"daemon: attempting to cancel invalid artifact kQm9fmnCmXST1-MMmxzcau2oKZCXXrlZydo4PkeV5hO_2PKfeC8t98hrbV_ZZx_j",
-		"daemon: fulfilled artifact " + want,
+		"daemon: fulfilled artifact fiZf-ZY_Yq6qxJNrHbMiIPYCsGkUiKCRsZrcSELXTqZWtCnESlHmzV5ThhWWGGYG",
 	}
 	gotLog := strings.Split(buf.String(), "\n")
 	slices.Sort(gotLog)

cmd/mbf/info.go

@@ -21,10 +21,7 @@ func commandInfo(
 	r *rosa.Report,
 ) (err error) {
 	if len(args) == 0 {
-		for _, h := range rosa.Native().CollectAll() {
+		return errors.New("info requires at least 1 argument")
-			fmt.Println(h)
-		}
-		return nil
 	}
 
 	// recovered by HandleAccess

cmd/mbf/main.go

@@ -27,7 +27,6 @@ import (
 	"path/filepath"
 	"runtime"
 	"strconv"
-	"strings"
 	"sync"
 	"sync/atomic"
 	"syscall"
@@ -92,11 +91,6 @@ func main() {
 
 	var cm cache
 	defer func() { cm.Close() }()
-	if cm.color = ext.Isatty(syscall.Stderr) &&
-		os.Getenv("NO_COLOR") == "" &&
-		os.Getenv("TERM") != "dumb"; cm.color {
-		log.SetPrefix("\x1b[2mmbf: \x1b[0m")
-	}
 
 	var (
 		flagQuiet bool
@@ -208,17 +202,13 @@ func main() {
 		"v", command.BoolFlag(false),
 		"Do not suppress verbose output from init",
 	).Flag(
-		&cm.attr.Cures,
+		&cm.cures,
 		"cures", command.IntFlag(0),
 		"Maximum number of dependencies to cure at any given time",
 	).Flag(
-		&cm.attr.Jobs,
+		&cm.jobs,
 		"jobs", command.IntFlag(0),
 		"Preferred number of jobs to run, when applicable",
-	).Flag(
-		&cm.attr.Load,
-		"load-average", command.IntFlag(0),
-		"Preferred load average number, when applicable",
 	).Flag(
 		&cm.base,
 		"d", command.StringFlag("$MBF_CACHE_DIR"),
@@ -227,11 +217,6 @@ func main() {
 		&cm.mirror,
 		"r", command.StringFlag("$MBF_REMOTE"),
 		"URL of mirror service",
-	).Flag(
-		&cm.deep,
-		"deep", command.BoolFlag(false),
-		"Cure all inputs even when the required artifact is available "+
-			"via the mirror service",
 	).Flag(
 		&cm.idle,
 		"sched-idle", command.BoolFlag(false),
@@ -283,7 +268,7 @@ func main() {
 			if _, err := io.Copy(h, os.Stdin); err != nil {
 				return err
 			}
-			fmt.Println(pkg.Encode(pkg.Checksum(h.Sum(nil))))
+			log.Println(pkg.Encode(pkg.Checksum(h.Sum(nil))))
 			return nil
 		},
 	)
@@ -554,9 +539,7 @@ func main() {
 			if base, err := os.OpenRoot(cm.base); err != nil {
 				return err
 			} else {
-				var mux http.ServeMux
+				h = rosa.NewMirror(msg, base.FS(), key)
-				rosa.NewMirror(msg, base.FS(), key).Register(&mux)
-				h = &mux
 			}
 
 			server := http.Server{Addr: args[0], Handler: h}
@@ -578,52 +561,28 @@ func main() {
 		},
 	)
 
-	c.NewCommand(
-		"snapshot",
-		"Populate an empty directory with a static mirror snapshot",
-		func(args []string) error {
-			if len(args) != 1 {
-				return errors.New("snapshot requires 1 argument")
-			}
-
-			var key ed25519.PrivateKey
-			if p, err := os.ReadFile(filepath.Join(cm.base, "ed25519")); err != nil {
-				return err
-			} else if len(p) != ed25519.PrivateKeySize {
-				return errors.New("invalid private key")
-			} else {
-				key = p
-			}
-
-			var m rosa.Mirror
-			if base, err := os.OpenRoot(cm.base); err != nil {
-				return err
-			} else {
-				m = rosa.NewMirror(msg, base.FS(), key)
-			}
-
-		retry:
-			root, err := os.OpenRoot(args[0])
-			if err != nil {
-				if os.IsNotExist(err) {
-					if err = os.MkdirAll(args[0], 0755); err != nil {
-						return err
-					}
-					goto retry
-				}
-				return err
-			}
-
-			go func() { <-ctx.Done(); _ = root.Close() }()
-			return m.Populate(root)
-		},
-	)
-
 	{
+		var (
+			flagGentoo   string
+			flagChecksum string
+		)
 		c.NewCommand(
-			"stage4",
+			"stage3",
 			"Check for toolchain 3-stage non-determinism",
 			func(args []string) (err error) {
+				s := rosa.Std
+				if flagGentoo != "" {
+					s -= 3 // magic number to discourage misuse
+
+					var checksum pkg.Checksum
+					if len(flagChecksum) != 0 {
+						if err = pkg.Decode(&checksum, flagChecksum); err != nil {
+							return
+						}
+					}
+					rosa.Native().SetGentooStage3(flagGentoo, checksum)
+				}
+
 				var (
 					pathname *check.Absolute
 					checksum [2]unique.Handle[pkg.Checksum]
@@ -631,7 +590,7 @@ func main() {
 
 				_llvm := rosa.H("llvm")
 				if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					_, llvm := rosa.Native().New(rosa.Std - 2).Load(_llvm)
+					_, llvm := rosa.Native().New(s - 2).Load(_llvm)
 					pathname, _, err = cache.Cure(llvm)
 					return
 				}); err != nil {
@@ -640,31 +599,21 @@ func main() {
 				log.Println("stage1:", pathname)
 
 				if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					_, llvm := rosa.Native().New(rosa.Std - 1).Load(_llvm)
+					_, llvm := rosa.Native().New(s - 1).Load(_llvm)
-					pathname, _, err = cache.Cure(llvm)
-					return
-				}); err != nil {
-					return
-				}
-				log.Println("stage2:", pathname)
-
-				if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					_, llvm := rosa.Native().New(rosa.Std).Load(_llvm)
 					pathname, checksum[0], err = cache.Cure(llvm)
 					return
 				}); err != nil {
 					return
 				}
-				log.Println("stage3:", pathname)
+				log.Println("stage2:", pathname)
-
 				if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					_, llvm := rosa.Native().New(rosa.Stage3).Load(_llvm)
+					_, llvm := rosa.Native().New(s).Load(_llvm)
 					pathname, checksum[1], err = cache.Cure(llvm)
 					return
 				}); err != nil {
 					return
 				}
-				log.Println("stage4:", pathname)
+				log.Println("stage3:", pathname)
 
 				if checksum[0] != checksum[1] {
 					err = &pkg.ChecksumMismatchError{
@@ -673,34 +622,23 @@ func main() {
 					}
 				} else {
 					log.Println(
-						"stage3 is identical to stage4",
+						"stage2 is identical to stage3",
 						"("+pkg.Encode(checksum[0].Value())+")",
 					)
 				}
 				return
 			},
+		).Flag(
+			&flagGentoo,
+			"gentoo", command.StringFlag(""),
+			"Bootstrap from a Gentoo stage3 tarball",
+		).Flag(
+			&flagChecksum,
+			"checksum", command.StringFlag(""),
+			"Checksum of Gentoo stage3 tarball",
 		)
 	}
 
-	c.NewCommand(
-		"all",
-		command.UsageInternal,
-		func([]string) error {
-			all := rosa.Native().CollectAll()
-			a := make(pkg.Collect, len(all))
-			for i, h := range all {
-				_, a[i] = rosa.Native().Std().Load(h)
-			}
-			return cm.Do(func(cache *pkg.Cache) (err error) {
-				_, _, err = cache.Cure(&a)
-				if pkg.IsCollected(err) {
-					err = nil
-				}
-				return
-			})
-		},
-	)
-
 	{
 		var (
 			flagDump    string
@@ -710,13 +648,9 @@ func main() {
 			flagNoReply bool
 			flagFaults  bool
 			flagPop     bool
-			flagRebuild bool
 
 			flagBoot bool
 			flagStd  bool
-
-			flagGentoo   string
-			flagChecksum string
 		)
 		c.NewCommand(
 			"cure",
@@ -733,18 +667,6 @@ func main() {
 					t -= 1
 				}
 
-				if flagGentoo != "" {
-					var checksum pkg.Checksum
-					if len(flagChecksum) != 0 {
-						if err := pkg.Decode(&checksum, flagChecksum); err != nil {
-							return err
-						}
-					}
-					rosa.Native().SetGentooStage3(flagGentoo, checksum)
-
-					t -= 3 // magic number to discourage misuse
-				}
-
 				_, a := rosa.Native().New(t).Load(rosa.ArtifactH(unique.Make(args[0])))
 				if a == nil {
 					return fmt.Errorf("unknown artifact %q", args[0])
@@ -754,17 +676,13 @@ func main() {
 				default:
 					var pathname *check.Absolute
 					err := cm.Do(func(cache *pkg.Cache) (err error) {
-						if flagRebuild {
-							pathname, _, err = cache.CureNew(a)
-						} else {
 						pathname, _, err = cache.Cure(a)
-						}
 						return
 					})
 					if err != nil {
 						return err
 					}
-					fmt.Println(pathname)
+					log.Println(pathname)
 
 					if flagExport != "" {
 						msg.Verbosef("exporting %s to %s...", args[0], flagExport)
@@ -813,7 +731,7 @@ func main() {
 							ctx,
 							a,
 							"", true, os.Stdin, os.Stdout, os.Stderr,
-							rosa.AbsSystem.Append("bin", "sh"),
+							rosa.AbsSystem.Append("bin", "mksh"),
 							"sh",
 						)
 					})
@@ -825,7 +743,7 @@ func main() {
 					}
 					pathname, err := cureRemote(ctx, &addr, a, flags)
 					if !flagNoReply && err == nil {
-						fmt.Println(pathname)
+						log.Println(pathname)
 					}
 
 					if errors.Is(err, context.Canceled) {
@@ -919,97 +837,9 @@ func main() {
 			&flagPop,
 			"pop", command.BoolFlag(false),
 			"Display and destroy the most recent fault entry",
-		).Flag(
-			&flagRebuild,
-			"rebuild", command.BoolFlag(false),
-			"Always enter the artifact implementation",
-		).Flag(
-			&flagGentoo,
-			"gentoo", command.StringFlag(""),
-			"Bootstrap from a Gentoo stage3 tarball",
-		).Flag(
-			&flagChecksum,
-			"checksum", command.StringFlag(""),
-			"Checksum of Gentoo stage3 tarball",
 		)
 	}
 
-	c.NewCommand(
-		"validate",
-		"Repeatedly cure named artifact to validate determinism",
-		func(args []string) error {
-			stage := rosa.Std
-			if len(args) == 3 {
-				switch args[0] {
-				case "boot":
-					stage -= 2
-				case "std":
-					stage -= 1
-
-				default:
-					return fmt.Errorf("invalid stage %q", args[0])
-				}
-				args = args[1:]
-			}
-
-			if len(args) != 2 {
-				return errors.New("validate requires 2 arguments")
-			}
-
-			n, err := strconv.Atoi(args[0])
-			if err != nil {
-				return fmt.Errorf("invalid passes %q", args[0])
-			}
-
-			if n < 2 {
-				return errors.New("validate must rebuild at least twice")
-			}
-
-			_, a := rosa.Native().New(stage).Load(rosa.ArtifactH(unique.Make(args[1])))
-			if a == nil {
-				return fmt.Errorf("unknown artifact %q", args[1])
-			}
-
-			if !a.IsExclusive() && cm.attr.Jobs < 1 {
-				cm.attr.Jobs = runtime.NumCPU()/n + 1
-			}
-
-			res := make([]unique.Handle[pkg.Checksum], n)
-			if err = cm.Do(func(cache *pkg.Cache) error {
-				errs := make([]error, n)
-				var wg sync.WaitGroup
-				for i := range n {
-					wg.Go(func() {
-						_, res[i], errs[i] = cache.CureNew(a)
-					})
-				}
-				wg.Wait()
-				return errors.Join(errs...)
-			}); err != nil {
-				return err
-			}
-
-			for i := range n - 1 {
-				if res[i] == res[i+1] {
-					continue
-				}
-
-				var buf strings.Builder
-				buf.WriteString("nondeterminism:")
-				for _, o := range res {
-					buf.WriteString("\n\t")
-					buf.WriteString(filepath.Join(
-						cm.base,
-						"checksum",
-						pkg.Encode(o.Value()),
-					))
-				}
-				return errors.New(buf.String())
-			}
-			return nil
-		},
-	)
-
 	cleanC := c.New("clean", "Remove unused entries from the cache")
 	cleanC.NewCommand(
 		"fault",

command/builder.go

@@ -13,7 +13,6 @@ func New(output io.Writer, logf LogFunc, name string, early HandlerFunc) Command
 	return c
 }
 
-// newNode initialises a subcommand tree and returns its address.
 func newNode(output io.Writer, logf LogFunc, name, usage string) *node {
 	n := &node{
 		name: name, usage: usage,
@@ -23,8 +22,8 @@ func newNode(output io.Writer, logf LogFunc, name, usage string) *node {
 	n.set.SetOutput(output)
 	n.set.Usage = func() {
 		_ = n.writeHelp()
-		if len(n.suffix) > 0 {
+		if n.suffix.Len() > 0 {
-			_, _ = fmt.Fprintln(output, "flags:")
+			_, _ = fmt.Fprintln(output, "Flags:")
 			n.set.PrintDefaults()
 			_, _ = fmt.Fprintln(output)
 		}

command/builder_test.go

@@ -18,14 +18,8 @@ func TestBuild(t *testing.T) {
 
 	t.Run("direct zero length", func(t *testing.T) {
 		wantPanic := "invalid subcommand"
-		t.Run("zero length name", func(t *testing.T) {
+		t.Run("zero length name", func(t *testing.T) { defer checkRecover(t, "Command", wantPanic); c.Command("", "usage", stubHandler) })
-			defer checkRecover(t, "Command", wantPanic)
+		t.Run("zero length usage", func(t *testing.T) { defer checkRecover(t, "Command", wantPanic); c.Command("name", "", stubHandler) })
-			c.Command("", "usage", stubHandler)
-		})
-		t.Run("zero length usage", func(t *testing.T) {
-			defer checkRecover(t, "Command", wantPanic)
-			c.Command("name", "", stubHandler)
-		})
 	})
 
 	t.Run("direct adopt unique names", func(t *testing.T) {
@@ -40,14 +34,8 @@ func TestBuild(t *testing.T) {
 
 	t.Run("zero length", func(t *testing.T) {
 		wantPanic := "invalid subcommand tree"
-		t.Run("zero length name", func(t *testing.T) {
+		t.Run("zero length name", func(t *testing.T) { defer checkRecover(t, "New", wantPanic); c.New("", "usage") })
-			defer checkRecover(t, "New", wantPanic)
+		t.Run("zero length usage", func(t *testing.T) { defer checkRecover(t, "New", wantPanic); c.New("name", "") })
-			c.New("", "usage")
-		})
-		t.Run("zero length usage", func(t *testing.T) {
-			defer checkRecover(t, "New", wantPanic)
-			c.New("name", "")
-		})
 	})
 
 	t.Run("direct adopt unique names", func(t *testing.T) {

command/command.go

@@ -6,43 +6,36 @@ import (
 	"strings"
 )
 
-// UsageInternal is a special usage string that hides the command from the
+// UsageInternal causes the command to be hidden from help text when set as the usage string.
-// generated help message.
+const UsageInternal = "internal"
-const UsageInternal = "\x00"
 
 type (
 	// HandlerFunc is called when matching a directly handled subcommand tree.
 	HandlerFunc = func(args []string) error
 
-	// LogFunc is the function signature of a printf function. The zero value
+	// LogFunc is the function signature of a printf function.
-	// implies [log.Printf].
 	LogFunc = func(format string, a ...any)
 
-	// FlagDefiner is a deferred flag definer value, usually encapsulating the
+	// FlagDefiner is a deferred flag definer value, usually encapsulating the default value.
-	// default value.
 	FlagDefiner interface {
 		// Define defines the flag in set.
 		Define(b *strings.Builder, set *flag.FlagSet, p any, name, usage string)
 	}
 
-	// A Flag is satisfied by command objects capable of receiving flags.
 	Flag[T any] interface {
 		// Flag defines a generic flag type in Node's flag set.
 		Flag(p any, name string, value FlagDefiner, usage string) T
 	}
 
-	// A Command is the root of a command tree.
 	Command interface {
 		Parse(arguments []string) error
 
-		// MustParse determines exit outcomes for Parse errors and calls
+		// MustParse determines exit outcomes for Parse errors
-		// handleError if [HandlerFunc] returns a non-nil error.
+		// and calls handleError if [HandlerFunc] returns a non-nil error.
 		MustParse(arguments []string, handleError func(error))
 
 		baseNode[Command]
 	}
-
-	// A Node is a subcommand under a [Command].
 	Node baseNode[Node]
 
 	baseNode[T any] interface {
@@ -60,16 +53,3 @@ type (
 		Flag[T]
 	}
 )
-
-// rootNode satisfies baseNode for [Command].
-type rootNode struct{ *node }
-
-func (r rootNode) Command(name, usage string, f HandlerFunc) Command {
-	r.node.Command(name, usage, f)
-	return r
-}
-
-func (r rootNode) Flag(p any, name string, value FlagDefiner, usage string) Command {
-	r.node.Flag(p, name, value, usage)
-	return r
-}

command/flag.go

@@ -16,13 +16,7 @@ func (e FlagError) Is(target error) bool {
 }
 
 func (n *node) Flag(p any, name string, value FlagDefiner, usage string) Node {
-	var buf strings.Builder
+	value.Define(&n.suffix, n.set, p, name, usage)
-	value.Define(&buf, n.set, p, name, usage)
-	s := buf.String()
-	if len(s) > 0 && s[0] == ' ' {
-		s = s[1:]
-	}
-	n.suffix = append(n.suffix, s)
 	return n
 }
 

command/help.go

@@ -1,7 +1,6 @@
 package command
 
 import (
-	"bytes"
 	"errors"
 	"fmt"
 	"io"
@@ -14,31 +13,14 @@ var ErrHelp = errors.New("help requested")
 func (n *node) PrintHelp() { _ = n.writeHelp() }
 
 func (n *node) writeHelp() error {
-	prefix := strings.Join(append(n.prefix, n.name), " ")
-	var buf strings.Builder
-	offset := 7 + len(prefix)
-	line := offset + 14
-	w := bytes.Repeat([]byte{' '}, offset+1)
-	w[0] = '\n'
-
-	for _, flag := range n.suffix {
-		line += len(flag) + 1
-		if line >= 80 {
-			line = offset + len(flag) + 1
-			buf.Write(w)
-		}
-		buf.WriteByte(' ')
-		buf.WriteString(flag)
-	}
-
 	if _, err := fmt.Fprintf(n.out,
-		"usage: %s [-h | --help]%s <command> [<args>]\n",
+		"\nUsage:\t%s [-h | --help]%s COMMAND [OPTIONS]\n",
-		prefix, &buf,
+		strings.Join(append(n.prefix, n.name), " "), &n.suffix,
 	); err != nil {
 		return err
 	}
 	if n.child != nil {
-		if _, err := fmt.Fprint(n.out, "\ncommands:\n"); err != nil {
+		if _, err := fmt.Fprint(n.out, "\nCommands:\n"); err != nil {
 			return err
 		}
 	}

command/node.go

@@ -3,9 +3,9 @@ package command
 import (
 	"flag"
 	"io"
+	"strings"
 )
 
-// A node represents a command.
 type node struct {
 	child, next *node
 	name, usage string
@@ -13,16 +13,13 @@ type node struct {
 	out  io.Writer
 	logf LogFunc
 
-	// Names of commands preceding node.
 	prefix []string
-	// Short user-facing representations of flags received by node.
+	suffix strings.Builder
-	suffix []string
 
 	f   HandlerFunc
 	set *flag.FlagSet
 }
 
-// adopt adds v as the last child of n.
 func (n *node) adopt(v *node) bool {
 	if n.child != nil {
 		return n.child.append(v)
@@ -31,7 +28,6 @@ func (n *node) adopt(v *node) bool {
 	return true
 }
 
-// append adds v as the last sibling of n.
 func (n *node) append(v *node) bool {
 	if n.name == v.name {
 		return false

command/parse_test.go

@@ -70,7 +70,7 @@ func TestParse(t *testing.T) {
 			"d=0 out of order string flag",
 			buildTestCommand,
 			[]string{"string", "--string", "64d3b4b7b21788585845060e2199a78f"},
-			"flag provided but not defined: -string\nusage: test string [-h | --help] <command> [<args>]\n\n", "",
+			"flag provided but not defined: -string\n\nUsage:\ttest string [-h | --help] COMMAND [OPTIONS]\n\n", "",
 			errors.New("flag provided but not defined: -string"),
 		},
 		{
@@ -120,7 +120,7 @@ func TestParse(t *testing.T) {
 			"d=1 empty sub help",
 			buildTestCommand,
 			[]string{"empty", "-h"},
-			"usage: test empty [-h | --help] <command> [<args>]\n\n", "", flag.ErrHelp,
+			"\nUsage:\ttest empty [-h | --help] COMMAND [OPTIONS]\n\n", "", flag.ErrHelp,
 		},
 		{
 			"d=1 no match",
@@ -151,10 +151,10 @@ func TestParse(t *testing.T) {
 			"d=0 help",
 			buildTestCommand,
 			[]string{},
-			`usage: test [-h | --help] [-v] [--fail] [--string <value>] [--int <int>]
+			`
-            [--repeat <value>] <command> [<args>]
+Usage:	test [-h | --help] [-v] [--fail] [--string <value>] [--int <int>] [--repeat <value>] COMMAND [OPTIONS]
 
-commands:
+Commands:
     error      return an error
     print      wraps Fprint
     string     print string passed by flag
@@ -171,10 +171,10 @@ commands:
 			"d=0 help flag",
 			buildTestCommand,
 			[]string{"-h"},
-			`usage: test [-h | --help] [-v] [--fail] [--string <value>] [--int <int>]
+			`
-            [--repeat <value>] <command> [<args>]
+Usage:	test [-h | --help] [-v] [--fail] [--string <value>] [--int <int>] [--repeat <value>] COMMAND [OPTIONS]
 
-commands:
+Commands:
     error      return an error
     print      wraps Fprint
     string     print string passed by flag
@@ -185,7 +185,7 @@ commands:
     succeed    this command succeeds
     deep       top level of command tree with various levels
 
-flags:
+Flags:
   -fail
     	fail early
   -int int
@@ -203,9 +203,10 @@ flags:
 			"d=1 help",
 			buildTestCommand,
 			[]string{"join"},
-			`usage: test join [-h | --help] <command> [<args>]
+			`
+Usage:	test join [-h | --help] COMMAND [OPTIONS]
 
-commands:
+Commands:
     out    write result to wout
     log    log result to wlog
 
@@ -215,9 +216,10 @@ commands:
 			"d=1 help flag",
 			buildTestCommand,
 			[]string{"join", "-h"},
-			`usage: test join [-h | --help] <command> [<args>]
+			`
+Usage:	test join [-h | --help] COMMAND [OPTIONS]
 
-commands:
+Commands:
     out    write result to wout
     log    log result to wlog
 
@@ -228,9 +230,10 @@ commands:
 			"d=2 help",
 			buildTestCommand,
 			[]string{"deep", "d=2"},
-			`usage: test deep d=2 [-h | --help] <command> [<args>]
+			`
+Usage:	test deep d=2 [-h | --help] COMMAND [OPTIONS]
 
-commands:
+Commands:
     d=3    relative third level
 
 `, "", command.ErrHelp,
@@ -239,9 +242,10 @@ commands:
 			"d=2 help flag",
 			buildTestCommand,
 			[]string{"deep", "d=2", "-h"},
-			`usage: test deep d=2 [-h | --help] <command> [<args>]
+			`
+Usage:	test deep d=2 [-h | --help] COMMAND [OPTIONS]
 
-commands:
+Commands:
     d=3    relative third level
 
 `, "", flag.ErrHelp,
@@ -257,7 +261,7 @@ commands:
 				t.Errorf("Parse: error = %v; wantErr %v", err, tc.wantErr)
 			}
 			if got := wout.String(); got != tc.want {
-				t.Errorf("Parse:\n%s\nwant\n%s", got, tc.want)
+				t.Errorf("Parse: %s want %s", got, tc.want)
 			}
 			if gotLog := wlog.String(); gotLog != tc.wantLog {
 				t.Errorf("Parse: log = %s wantLog %s", gotLog, tc.wantLog)

command/wrap.go

@@ -0,0 +1,14 @@
+package command
+
+// the top level node wants [Command] returned for its builder methods
+type rootNode struct{ *node }
+
+func (r rootNode) Command(name, usage string, f HandlerFunc) Command {
+	r.node.Command(name, usage, f)
+	return r
+}
+
+func (r rootNode) Flag(p any, name string, value FlagDefiner, usage string) Command {
+	r.node.Flag(p, name, value, usage)
+	return r
+}

flake.nix

@@ -43,19 +43,19 @@
             ;
         in
         {
-          hakurei = callPackage ./. { inherit system self; };
+          hakurei = callPackage ./test { inherit system self; };
-          race = callPackage ./. {
+          race = callPackage ./test {
             inherit system self;
             withRace = true;
           };
 
-          sandbox = callPackage ./sandbox { inherit self; };
+          sandbox = callPackage ./test/sandbox { inherit self; };
-          sandbox-race = callPackage ./sandbox {
+          sandbox-race = callPackage ./test/sandbox {
             inherit self;
             withRace = true;
           };
 
-          sharefs = callPackage ./sharefs { inherit system self; };
+          sharefs = callPackage ./cmd/sharefs/test { inherit system self; };
 
           formatting = runCommandLocal "check-formatting" { nativeBuildInputs = [ nixfmt ]; } ''
             cd ${./.}
@@ -116,7 +116,7 @@
               nettools
               ;
           };
-          hsu = pkgs.callPackage ./hsu.nix { inherit (self.packages.${system}) hakurei; };
+          hsu = pkgs.callPackage ./cmd/hsu/package.nix { inherit (self.packages.${system}) hakurei; };
           sharefs = pkgs.linkFarm "sharefs" {
             "bin/sharefs" = "${hakurei}/libexec/sharefs";
             "bin/mount.fuse.sharefs" = "${hakurei}/libexec/sharefs";
@@ -190,11 +190,11 @@
                     };
                   }
 
-                  ./interactive/configuration.nix
+                  ./test/interactive/configuration.nix
-                  ./interactive/vm.nix
+                  ./test/interactive/vm.nix
-                  ./interactive/hakurei.nix
+                  ./test/interactive/hakurei.nix
-                  ./interactive/trace.nix
+                  ./test/interactive/trace.nix
-                  ./interactive/raceattr.nix
+                  ./test/interactive/raceattr.nix
 
                   self.nixosModules.hakurei
                   home-manager.nixosModules.home-manager

internal/pkg/archive.go

@@ -303,8 +303,8 @@ func init() {
 	})
 }
 
-// Inputs returns a slice containing the backing file.
+// Dependencies returns a slice containing the backing file.
-func (a archiveArtifact) Inputs() []Artifact {
+func (a archiveArtifact) Dependencies() []Artifact {
 	return []Artifact{a.f}
 }
 

internal/pkg/archive_test.go

@@ -186,7 +186,7 @@ func TestArchiveArtifact(t *testing.T) {
 			cureMany(t, c, []cureStep{
 				{"sample", pkg.NewArchive(
 					pkg.NewFile("", buf.Bytes()),
-				), ignorePathname, expectsFS(want), pkg.WNew, nil},
+				), ignorePathname, expectsFS(want), nil},
 			})
 		}, expectsFS{
 			".": {Mode: fs.ModeDir | 0700},
@@ -202,7 +202,7 @@ func TestArchiveArtifact(t *testing.T) {
 			"checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F/devices/uevent":     {Mode: 0600, Data: []byte("add")},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/-zXKfphyWM2Ko7VMVURaEMSuixNokFSe0xFbnwR2RtRtvMrcPGWalV0LIn45PXTY": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F")},
+			"identifier/3oYyAbRJ_we7AgWo1BRcRcnxXFk3mAQ0Qui2nGQMi8GIJNJQtvUC6P2IeoA5mbjD": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/CBPcoVHuVUTVRCMbRl8J30RSSzm_tyfuXaZ-HlZsanY1sY50meOVmgaWDrGKbx9F")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 			"work":       {Mode: fs.ModeDir | 0700},

internal/pkg/clean.go

@@ -73,10 +73,7 @@ func (c *Cache) Clean(dry, inputs bool, keep ...Artifact) (
 			continue
 		}
 
-		c.msg.Verbosef(
+		c.msg.Verbosef("arranging for destruction of %s...", name)
-			"arranging for destruction of %s%s%s...",
-			c.sgrIdent, name, c.sgrRes,
-		)
 		idents = append(idents, identPair{id, name})
 	}
 
@@ -105,10 +102,7 @@ func (c *Cache) Clean(dry, inputs bool, keep ...Artifact) (
 		if err = c.parent.Err(); err != nil {
 			return destroyedIdents, destroyedChecksums, err
 		}
-		c.msg.Verbosef(
+		c.msg.Verbosef("destroying checksum %s...", name)
-			"destroying checksum %s%s%s...",
-			c.sgrIdent, name, c.sgrRes,
-		)
 		if !dry {
 			if err = errors.Join(removeAll(c.base.Append(
 				dirChecksum,
@@ -136,10 +130,7 @@ func (c *Cache) Clean(dry, inputs bool, keep ...Artifact) (
 			continue
 		}
 
-		c.msg.Verbosef(
+		c.msg.Verbosef("destroying substitute %s...", name)
-			"destroying substitute %s%s%s...",
-			c.sgrIdent, name, c.sgrRes,
-		)
 		if !dry {
 			if err = os.Remove(c.base.Append(
 				dirStatus,

internal/pkg/clean_test.go

@@ -48,7 +48,7 @@ func TestClean(t *testing.T) {
 			"checksum/OLBgp1GsljhM2TJ-sbHjaiH9txEUvgdDTAzHv2P24donTt6_529l-9Ua0vFImLlb": {Mode: 0400},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/h6qx7m0vsyhO6oLEJgY2rKa1c6RZuIZ4QXxZSh__NZJ9VU0MIj5bFB-KuaPcsfpE": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/OLBgp1GsljhM2TJ-sbHjaiH9txEUvgdDTAzHv2P24donTt6_529l-9Ua0vFImLlb")},
+			"identifier/pPRjw2XYgjB5k8dYedwxTBMgHh4_v2JM_G2Vd-skQbAGOOgPsl3CGSUbEF7om_MO": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/OLBgp1GsljhM2TJ-sbHjaiH9txEUvgdDTAzHv2P24donTt6_529l-9Ua0vFImLlb")},
 
 			"lock":       {Mode: 0644},
 			"variant":    {Mode: 0400},
@@ -69,7 +69,7 @@ func TestClean(t *testing.T) {
 			"checksum/KgZ-FjbGuU-XP2QEHInpgv-2Zn0cTH5NqFMgTU0XrSdKmSwyC-3baVs1BMCP5spk": {Mode: 0400, Data: []byte("\xfd")},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/tkrOYhQfTRaArk4nNYNjTmHQUmuJMVIoDeAKIQBm3I4uuMimBKXKMIY2gGZqwQg4": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/KgZ-FjbGuU-XP2QEHInpgv-2Zn0cTH5NqFMgTU0XrSdKmSwyC-3baVs1BMCP5spk")},
+			"identifier/FMwSBYw22KqM8jZryfY2ChHXpLuVDdWYyNOYdHvIVYk8ujY6UnGRm5brr2sTTfpD": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/KgZ-FjbGuU-XP2QEHInpgv-2Zn0cTH5NqFMgTU0XrSdKmSwyC-3baVs1BMCP5spk")},
 
 			"lock":       {Mode: 0644},
 			"variant":    {Mode: 0400},
@@ -122,16 +122,16 @@ func TestClean(t *testing.T) {
 			"checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE/result": {Mode: 0444},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/KpxTUsUfGbsX6C6HU2j9cd9He3_tt2o2m2MgH4m0zial8lmoqSWY-Gc3KrS0k-UK": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/H-eSiCo227-xdqyNl2R-5G3eqXPtbb8XegAB70I5OQb2majeZXJoCxTq9wJy5qqv")},
+			"identifier/Ef8KX6s_rS_nLgze0rj90zKyrGAvOnzyU0DL7nrYQWEG_f4a9pmUKI6HBEMD8AE8": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/H-eSiCo227-xdqyNl2R-5G3eqXPtbb8XegAB70I5OQb2majeZXJoCxTq9wJy5qqv")},
-			"identifier/xxQ43VMIS1WHMSEFnUdBNd6pulbtgiTorP_mtJpEsZENYhGBiDEL6Y2D8yqn0Sra": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
+			"identifier/xoIGLemzLF227e-w_AJcf_1Sgqh2gs3KFgqvOIWUQE-9P_y2vHBMBytL4GRGQqTb": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
 
 			"lock":    {Mode: 0644},
 			"variant": {Mode: 0400},
 			"status":  {Mode: fs.ModeDir | 0700},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
-			"substitute/dP-6_wIDRRouOaOF-nkBy-IaUbLdYHbOUTrptu7j_qfW01mnHSjYJ0oykUmvUd2x": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
+			"substitute/4bjS-QjGcSV4nth-W6Vg3-wolKmKgiq4Ld2oRIWcOfy6Wi41XXLAWPoo8FcDx6BH": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
-			"substitute/td1tf1kb3z8iUFg2k1xlHeTTEz3xR4e77WSWdv2JhjmZyY6iuvodhdT8BblDOi0E": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
+			"substitute/dzO8FEY9lu4hwRT6BfRZOX-uYGsC_5XH4jEJ7sJyThcmG9J_w1ArOAaUCGfL8wAM": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
 
 			"fault": {Mode: fs.ModeDir | 0700},
 			"work":  {Mode: fs.ModeDir | 0700},
@@ -199,18 +199,18 @@ func TestClean(t *testing.T) {
 			"checksum/H-eSiCo227-xdqyNl2R-5G3eqXPtbb8XegAB70I5OQb2majeZXJoCxTq9wJy5qqv":        {Mode: 0400, Data: []byte("kept")},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/KpxTUsUfGbsX6C6HU2j9cd9He3_tt2o2m2MgH4m0zial8lmoqSWY-Gc3KrS0k-UK": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/H-eSiCo227-xdqyNl2R-5G3eqXPtbb8XegAB70I5OQb2majeZXJoCxTq9wJy5qqv")},
+			"identifier/Ef8KX6s_rS_nLgze0rj90zKyrGAvOnzyU0DL7nrYQWEG_f4a9pmUKI6HBEMD8AE8": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/H-eSiCo227-xdqyNl2R-5G3eqXPtbb8XegAB70I5OQb2majeZXJoCxTq9wJy5qqv")},
-			"identifier/xxQ43VMIS1WHMSEFnUdBNd6pulbtgiTorP_mtJpEsZENYhGBiDEL6Y2D8yqn0Sra": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/CyDnDvF-LaeGPcSW70tPosNCoclByWkTjznUUF1DcgzlIwkN9yzz1ZFME1TlPj6W")},
+			"identifier/xoIGLemzLF227e-w_AJcf_1Sgqh2gs3KFgqvOIWUQE-9P_y2vHBMBytL4GRGQqTb": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/CyDnDvF-LaeGPcSW70tPosNCoclByWkTjznUUF1DcgzlIwkN9yzz1ZFME1TlPj6W")},
 
 			"lock":    {Mode: 0644},
 			"variant": {Mode: 0400},
 
 			"status": {Mode: fs.ModeDir | 0700},
-			"status/xxQ43VMIS1WHMSEFnUdBNd6pulbtgiTorP_mtJpEsZENYhGBiDEL6Y2D8yqn0Sra": {Mode: 0400, Data: []byte(statusHeader + "kept")},
+			"status/4bjS-QjGcSV4nth-W6Vg3-wolKmKgiq4Ld2oRIWcOfy6Wi41XXLAWPoo8FcDx6BH": {Mode: 0400, Data: []byte(statusHeader + "kept")},
-			"status/td1tf1kb3z8iUFg2k1xlHeTTEz3xR4e77WSWdv2JhjmZyY6iuvodhdT8BblDOi0E": {Mode: 0400, Data: []byte(statusHeader + "kept")},
+			"status/xoIGLemzLF227e-w_AJcf_1Sgqh2gs3KFgqvOIWUQE-9P_y2vHBMBytL4GRGQqTb": {Mode: 0400, Data: []byte(statusHeader + "kept")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
-			"substitute/td1tf1kb3z8iUFg2k1xlHeTTEz3xR4e77WSWdv2JhjmZyY6iuvodhdT8BblDOi0E": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/CyDnDvF-LaeGPcSW70tPosNCoclByWkTjznUUF1DcgzlIwkN9yzz1ZFME1TlPj6W")},
+			"substitute/4bjS-QjGcSV4nth-W6Vg3-wolKmKgiq4Ld2oRIWcOfy6Wi41XXLAWPoo8FcDx6BH": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/CyDnDvF-LaeGPcSW70tPosNCoclByWkTjznUUF1DcgzlIwkN9yzz1ZFME1TlPj6W")},
 
 			"fault": {Mode: fs.ModeDir | 0700},
 			"work":  {Mode: fs.ModeDir | 0700},
@@ -238,7 +238,7 @@ func TestClean(t *testing.T) {
 			base := makeBase(t)
 			msg := message.New(log.New(os.Stderr, "clean: ", 0))
 			msg.SwapVerbose(testing.Verbose())
-			c, err := pkg.Open(t.Context(), msg, base, nil)
+			c, err := pkg.Open(t.Context(), msg, 0, 0, 0, base)
 			if err != nil {
 				t.Fatal(err)
 			}

internal/pkg/compress.go

@@ -6,9 +6,6 @@ import (
 	"fmt"
 	"io"
 	"os"
-
-	"hakurei.app/internal/xz"
-	"hakurei.app/internal/zstd"
 )
 
 const (
@@ -16,10 +13,6 @@ const (
 	Gzip = iota
 	// Bzip2 denotes a stream compressed via [bzip2].
 	Bzip2
-	// Zstd denotes a stream compressed via [zstd].
-	Zstd
-	// XZ denotes a stream compressed via [xz].
-	XZ
 )
 
 // A decompressArtifact is a [FileArtifact] decompressing a backing
@@ -73,8 +66,8 @@ func init() {
 	})
 }
 
-// Inputs returns a slice containing the backing file.
+// Dependencies returns a slice containing the backing file.
-func (a *decompressArtifact) Inputs() []Artifact {
+func (a *decompressArtifact) Dependencies() []Artifact {
 	return []Artifact{a.f}
 }
 
@@ -98,9 +91,6 @@ func (c compoundCloser) Close() error {
 	return err
 }
 
-// IsExecutable returns false.
-func (*decompressArtifact) IsExecutable() bool { return false }
-
 // Cure returns a decompressor [io.ReadCloser].
 func (a *decompressArtifact) Cure(r *RContext) (io.ReadCloser, error) {
 	sr, err := r.Open(a.f)
@@ -124,23 +114,6 @@ func (a *decompressArtifact) Cure(r *RContext) (io.ReadCloser, error) {
 			io.Closer
 		}{bzip2.NewReader(br), br}, nil
 
-	case Zstd:
-		return struct {
-			io.Reader
-			io.Closer
-		}{zstd.NewReader(br), br}, nil
-
-	case XZ:
-		var _dr io.Reader
-		if _dr, err = xz.NewReader(br, 0); err != nil {
-			_ = br.Close()
-			return nil, err
-		}
-		return struct {
-			io.Reader
-			io.Closer
-		}{_dr, br}, nil
-
 	default:
 		return nil, os.ErrInvalid
 	}

internal/pkg/compress_test.go

@@ -43,7 +43,7 @@ func TestDecompress(t *testing.T) {
 					&client,
 					"file:///testdata",
 					pkg.Checksum{0xfd},
-				), pkg.Gzip), nil, nil, pkg.WNew, &pkg.ChecksumMismatchError{
+				), pkg.Gzip), nil, nil, &pkg.ChecksumMismatchError{
 					Got:  testdataChecksum,
 					Want: pkg.Checksum{0xfd},
 				}},
@@ -52,7 +52,7 @@ func TestDecompress(t *testing.T) {
 					&client,
 					"file:///testdata",
 					testdataChecksum,
-				), pkg.Gzip), ignorePathname, expectsChecksum(sha512.Sum384([]byte{0})), pkg.WNew, nil},
+				), pkg.Gzip), ignorePathname, expectsChecksum(sha512.Sum384([]byte{0})), nil},
 			})
 		}, expectsFS{
 			".": {Mode: fs.ModeDir | 0700},
@@ -61,7 +61,7 @@ func TestDecompress(t *testing.T) {
 			"checksum/" + pkg.Encode(sha512.Sum384([]byte{0})): {Mode: 0400, Data: []byte{0}},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/mae-iR_9LFT_BOEJ2IRzKsAlI754SalMjjt95fZeMd3gEyAzsrvuOXnXN0bFZJi4": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/vsAhtPNo4waRNOASwrQwcIPTqb3SBuJOXw2G4T1mNmVZM-wrQTRllmgXqcIIoRcX")},
+			"identifier/QpjkahDrz7pz-tv0eAGNXR6x9NAtTjWCK5Hr7G1cIZj9rT7bLYJWUQeLD4wamAlF": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/vsAhtPNo4waRNOASwrQwcIPTqb3SBuJOXw2G4T1mNmVZM-wrQTRllmgXqcIIoRcX")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 			"work":       {Mode: fs.ModeDir | 0700},

internal/pkg/exec.go

@@ -30,16 +30,10 @@ import (
 // AbsWork is the container pathname [TContext.GetWorkDir] is mounted on.
 var AbsWork = fhs.AbsRoot.Append("work/")
 
-const (
+// EnvJobs is the name of the environment variable holding a decimal
-	// EnvJobs is the name of the environment variable holding a decimal
+// representation of the preferred job count. Its value must not affect cure
-	// representation of the preferred job count. Its value must not affect cure
+// outcome.
-	// outcome.
+const EnvJobs = "CURE_JOBS"
-	EnvJobs = "CURE_JOBS"
-	// EnvLoad is the name of the environment variable holding a decimal
-	// representation of the preferred loadavg target. Its value must not affect
-	// cure outcome.
-	EnvLoad = "CURE_LOAD"
-)
 
 // ExecPath is a slice of [Artifact] and the [check.Absolute] pathname to make
 // it available at under in the container.
@@ -413,9 +407,9 @@ func init() {
 		func(r *IRReader) Artifact { return readExecArtifact(r, true) })
 }
 
-// Inputs returns a slice of all artifacts collected from caller-supplied
+// Dependencies returns a slice of all artifacts collected from caller-supplied
 // [ExecPath].
-func (a *execArtifact) Inputs() []Artifact {
+func (a *execArtifact) Dependencies() []Artifact {
 	artifacts := make([][]Artifact, 0, len(a.paths))
 	for _, p := range a.paths {
 		artifacts = append(artifacts, p.A)
@@ -444,7 +438,7 @@ func scanVerbose(
 	msg message.Msg,
 	cancel context.CancelFunc,
 	done chan<- struct{},
-	prefix, suffix string,
+	prefix string,
 	r io.Reader,
 ) {
 	defer close(done)
@@ -454,7 +448,7 @@ func scanVerbose(
 		bufio.MaxScanTokenSize<<12,
 	)
 	for s.Scan() {
-		msg.Verbose(prefix, s.Text()+suffix)
+		msg.Verbose(prefix, s.Text())
 	}
 	if err := s.Err(); err != nil && !errors.Is(err, os.ErrClosed) {
 		cancel()
@@ -477,7 +471,7 @@ const SeccompPresets = std.PresetStrict &
 func (a *execArtifact) makeContainer(
 	ctx context.Context,
 	msg message.Msg,
-	flags, jobs, load int,
+	flags, jobs int,
 	hostNet bool,
 	temp, work *check.Absolute,
 	getArtifact GetArtifactFunc,
@@ -514,10 +508,7 @@ func (a *execArtifact) makeContainer(
 	z.Quiet = flags&CSuppressInit != 0
 	z.Uid, z.Gid = (1<<10)-1, (1<<10)-1
 	z.Dir, z.Path, z.Args = a.dir, a.path, a.args
-	z.Env = slices.Concat(a.env, []string{
+	z.Env = slices.Concat(a.env, []string{EnvJobs + "=" + strconv.Itoa(jobs)})
-		EnvJobs + "=" + strconv.Itoa(jobs),
-		EnvLoad + "=" + strconv.Itoa(load),
-	})
 	z.Grow(len(a.paths) + 4)
 
 	if a.arch != runtime.GOARCH {
@@ -626,7 +617,7 @@ func (c *Cache) EnterExec(
 		return ErrNotExec
 	}
 
-	deps := Collect(a.Inputs())
+	deps := Collect(a.Dependencies())
 	if _, _, err = c.Cure(&deps); err == nil {
 		return errors.New("unreachable")
 	} else if !IsCollected(err) {
@@ -658,9 +649,8 @@ func (c *Cache) EnterExec(
 	var z *container.Container
 	z, err = e.makeContainer(
 		ctx, c.msg,
-		c.attr.Flags,
+		c.flags,
-		c.attr.Jobs,
+		c.jobs,
-		c.attr.Load,
 		hostNet,
 		temp, work,
 		func(a Artifact) (*check.Absolute, unique.Handle[Checksum]) {
@@ -703,7 +693,7 @@ func (a *execArtifact) cure(f *FContext, hostNet bool) (err error) {
 	msg := f.GetMessage()
 	var z *container.Container
 	if z, err = a.makeContainer(
-		ctx, msg, f.cache.attr.Flags, f.GetJobs(), f.GetLoad(), hostNet,
+		ctx, msg, f.cache.flags, f.GetJobs(), hostNet,
 		f.GetTempDir(), f.GetWorkDir(),
 		f.GetArtifact,
 		f.cache.Ident,
@@ -728,25 +718,14 @@ func (a *execArtifact) cure(f *FContext, hostNet bool) (err error) {
 
 		brStdout, brStderr := f.cache.getReader(stdout), f.cache.getReader(stderr)
 		stdoutDone, stderrDone := make(chan struct{}), make(chan struct{})
-
-		var suffix, prefixO, prefixE string
-		if f.cache.attr.Flags&CColourOutput != 0 {
-			suffix = "\x1b[0m"
-			prefixO = "\x1b[1;37m(" + a.name + ")\x1b[0m"
-			prefixE = "\x1b[1;97m(" + a.name + ")\x1b[0m"
-		} else {
-			prefixO = "(" + a.name + ":1)"
-			prefixE = "(" + a.name + ":2)"
-		}
-
 		go scanVerbose(
 			msg, cancel, stdoutDone,
-			prefixO, suffix,
+			"("+a.name+":1)",
 			io.TeeReader(brStdout, status),
 		)
 		go scanVerbose(
 			msg, cancel, stderrDone,
-			prefixE, suffix,
+			"("+a.name+":2)",
 			io.TeeReader(brStderr, status),
 		)
 		defer func() {

internal/pkg/exec_test.go

@@ -84,7 +84,7 @@ func TestExec(t *testing.T) {
 						},
 					}),
 					pkg.MustPath("/opt", false, testtool),
-				), ignorePathname, wantOffline, pkg.WNew, nil},
+				), ignorePathname, wantOffline, nil},
 
 				{"substitution", pkg.NewExec(
 					"exec-offline", "", new(wantOffline.hash()), 0, false, false,
@@ -108,7 +108,7 @@ func TestExec(t *testing.T) {
 						},
 					}),
 					pkg.MustPath("/opt", false, testtool),
-				), ignorePathname, wantOffline, pkg.WSubstitute, nil},
+				), ignorePathname, wantOffline, nil},
 
 				{"error passthrough", pkg.NewExec(
 					"", "", nil, 0, false, true,
@@ -118,7 +118,7 @@ func TestExec(t *testing.T) {
 					[]string{"testtool"},
 
 					pkg.MustPath("/proc/nonexistent", false, failingArtifact),
-				), nil, nil, pkg.WNew, &pkg.DependencyCureError{
+				), nil, nil, &pkg.DependencyCureError{
 					{
 						A:   failingArtifact,
 						Err: stub.UniqueError(0xcafe),
@@ -133,7 +133,7 @@ func TestExec(t *testing.T) {
 					[]string{"testtool"},
 
 					pkg.ExecPath{},
-				), nil, nil, pkg.WNew, pkg.ErrInvalidPaths},
+				), nil, nil, pkg.ErrInvalidPaths},
 			})
 
 			// check init failure passthrough
@@ -183,11 +183,11 @@ func TestExec(t *testing.T) {
 			"checksum/OLBgp1GsljhM2TJ-sbHjaiH9txEUvgdDTAzHv2P24donTt6_529l-9Ua0vFImLlb": {Mode: 0400, Data: []byte{}},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/MEaM1v6MLRQ60JQOOKbfDzfJOdC3L8i30IgOpYbQdX68enwF0FN-P36_M4RX_0Vd": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/QwS7SmiatdqryQYgESdGw7Yw2PcpNf0vNfpvUA0t92BTlKiUjfCrXyMW17G2X77X": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
 			"identifier/_gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/OLBgp1GsljhM2TJ-sbHjaiH9txEUvgdDTAzHv2P24donTt6_529l-9Ua0vFImLlb")},
 			"identifier/" + expected.Offline:                                              {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantOfflineEncode)},
 			"identifier/" + expected.OfflineS:                                             {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantOfflineEncode)},
-			"identifier/_OHzj_xdmfpaWfFN-_D9JpGpPlIjh84873E3Ui9xwv9PPPIt0BlzvH-cnPNeRsTl": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/vjz1MHPcGBKV7sjcs8jQP3cqxJ1hgPTiQBMCEHP9BGXjGxd-tJmEmXKaStObo5gK": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 
@@ -225,7 +225,7 @@ func TestExec(t *testing.T) {
 						},
 					}),
 					pkg.MustPath("/opt", false, testtool),
-				), ignorePathname, wantNet, pkg.WNew, nil},
+				), ignorePathname, wantNet, nil},
 			})
 
 			destroyStatus(t, base, 2, 0)
@@ -242,7 +242,7 @@ func TestExec(t *testing.T) {
 			"identifier":                 {Mode: fs.ModeDir | 0700},
 			"identifier/" + expected.Net: {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/a1F_i9PVQI4qMcoHgTQkORuyWLkC1GLIxOhDt2JpU1NGAxWc5VJzdlfRK-PYBh3W")},
 			"identifier/_gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/OLBgp1GsljhM2TJ-sbHjaiH9txEUvgdDTAzHv2P24donTt6_529l-9Ua0vFImLlb")},
-			"identifier/MEaM1v6MLRQ60JQOOKbfDzfJOdC3L8i30IgOpYbQdX68enwF0FN-P36_M4RX_0Vd": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/vjz1MHPcGBKV7sjcs8jQP3cqxJ1hgPTiQBMCEHP9BGXjGxd-tJmEmXKaStObo5gK": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 
@@ -269,7 +269,7 @@ func TestExec(t *testing.T) {
 						},
 					}),
 					pkg.MustPath("/opt", false, testtool),
-				), ignorePathname, wantOffline, pkg.WNew, nil},
+				), ignorePathname, wantOffline, nil},
 			})
 
 			destroyStatus(t, base, 2, 0)
@@ -284,7 +284,7 @@ func TestExec(t *testing.T) {
 
 			"identifier":                     {Mode: fs.ModeDir | 0700},
 			"identifier/" + expected.OvlRoot: {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantOfflineEncode)},
-			"identifier/MEaM1v6MLRQ60JQOOKbfDzfJOdC3L8i30IgOpYbQdX68enwF0FN-P36_M4RX_0Vd": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/vjz1MHPcGBKV7sjcs8jQP3cqxJ1hgPTiQBMCEHP9BGXjGxd-tJmEmXKaStObo5gK": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 
@@ -316,7 +316,7 @@ func TestExec(t *testing.T) {
 							return os.MkdirAll(t.GetWorkDir().String(), 0700)
 						},
 					}), pkg.Path(pkg.AbsWork, false /* ignored */, testtool),
-				), ignorePathname, wantOffline, pkg.WNew, nil},
+				), ignorePathname, wantOffline, nil},
 			})
 
 			destroyStatus(t, base, 2, 0)
@@ -331,7 +331,7 @@ func TestExec(t *testing.T) {
 
 			"identifier":                  {Mode: fs.ModeDir | 0700},
 			"identifier/" + expected.Work: {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantOfflineEncode)},
-			"identifier/MEaM1v6MLRQ60JQOOKbfDzfJOdC3L8i30IgOpYbQdX68enwF0FN-P36_M4RX_0Vd": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/vjz1MHPcGBKV7sjcs8jQP3cqxJ1hgPTiQBMCEHP9BGXjGxd-tJmEmXKaStObo5gK": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 
@@ -385,7 +385,7 @@ func TestExec(t *testing.T) {
 						},
 					}),
 					pkg.MustPath("/opt", false, testtool),
-				), ignorePathname, wantOffline, pkg.WNew, nil},
+				), ignorePathname, wantOffline, nil},
 			})
 
 			destroyStatus(t, base, 2, 0)
@@ -403,9 +403,9 @@ func TestExec(t *testing.T) {
 
 			"identifier": {Mode: fs.ModeDir | 0700},
 			"identifier/_gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/OLBgp1GsljhM2TJ-sbHjaiH9txEUvgdDTAzHv2P24donTt6_529l-9Ua0vFImLlb")},
-			"identifier/2uIvmnqtzAx4Ed4PWV8xjZCWeJCwfE2IcCc0evM-Nd8mDUlgSU6nLtPLcpPUcMlG": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/nY_CUdiaUM1OL4cPr5TS92FCJ3rCRV7Hm5oVTzAvMXwC03_QnTRfQ5PPs7mOU9fK")},
+			"identifier/B-kc5iJMx8GtlCua4dz6BiJHnDAOUfPjgpbKq4e-QEn0_CZkSYs3fOA1ve06qMs2": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/nY_CUdiaUM1OL4cPr5TS92FCJ3rCRV7Hm5oVTzAvMXwC03_QnTRfQ5PPs7mOU9fK")},
 			"identifier/" + expected.Layers:                                               {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantOfflineEncode)},
-			"identifier/MEaM1v6MLRQ60JQOOKbfDzfJOdC3L8i30IgOpYbQdX68enwF0FN-P36_M4RX_0Vd": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/vjz1MHPcGBKV7sjcs8jQP3cqxJ1hgPTiQBMCEHP9BGXjGxd-tJmEmXKaStObo5gK": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 
@@ -438,7 +438,7 @@ func TestExec(t *testing.T) {
 						},
 					}),
 					pkg.MustPath("/opt", false, testtool),
-				), ignorePathname, wantOffline, pkg.WNew, nil},
+				), ignorePathname, wantOffline, nil},
 			})
 
 			destroyStatus(t, base, 2, 0)
@@ -452,8 +452,8 @@ func TestExec(t *testing.T) {
 			"checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU": {Mode: fs.ModeDir | 0500},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/Vzj9qaSVBtNyBQv_PW6uojFOWTwraHoaC0C6xdaGG1q_HTvSh4KLVxRcEQU1jd2Y": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/kvJIqZo5DKFOxC2ZQ-8_nPaQzEAz9cIm3p6guO-uLqm-xaiPu7oRkSnsu411jd_U": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
-			"identifier/MEaM1v6MLRQ60JQOOKbfDzfJOdC3L8i30IgOpYbQdX68enwF0FN-P36_M4RX_0Vd": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/vjz1MHPcGBKV7sjcs8jQP3cqxJ1hgPTiQBMCEHP9BGXjGxd-tJmEmXKaStObo5gK": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
 			"identifier/" + expected.Promote:                                              {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantOfflineEncode)},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
@@ -503,7 +503,7 @@ func TestExec(t *testing.T) {
 					".": {Mode: fs.ModeDir | 0500},
 
 					"check": {Mode: 0400, Data: []byte("binfmt")},
-				}, pkg.WNew, nil},
+				}, nil},
 			})
 
 			destroyStatus(t, base, 2, 0)
@@ -519,9 +519,9 @@ func TestExec(t *testing.T) {
 			"checksum/UnDo4B5KneEUY5b4vRUk_y9MWgkWuw2N8f8a2XayO686xXur-aZmX2-7n_8tKMe3/check":      {Mode: 0400, Data: []byte("binfmt")},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/c-HodmoEG0f_WGdst9aN-duLMH7QDDXOUi7UcyArXMeM1fc9lYKKQlTCW8ktaK8X": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UnDo4B5KneEUY5b4vRUk_y9MWgkWuw2N8f8a2XayO686xXur-aZmX2-7n_8tKMe3")},
+			"identifier/6VQTJ1lI5BmVuI1YFYJ8ClO3MRORvTTrcWFDcUU-l5Ga8EofxCxGlSTYN-u8dKj_": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UnDo4B5KneEUY5b4vRUk_y9MWgkWuw2N8f8a2XayO686xXur-aZmX2-7n_8tKMe3")},
 			"identifier/_v8AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/5aevg3YpDxjqQZ-pdvXK7YqgkL5JKqcoStYQxeD96kuYar6K2mRQWMHib6NQRnpV")},
-			"identifier/MEaM1v6MLRQ60JQOOKbfDzfJOdC3L8i30IgOpYbQdX68enwF0FN-P36_M4RX_0Vd": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/vjz1MHPcGBKV7sjcs8jQP3cqxJ1hgPTiQBMCEHP9BGXjGxd-tJmEmXKaStObo5gK": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 

internal/pkg/file.go

@@ -12,7 +12,6 @@ type fileArtifact []byte
 
 var _ KnownChecksum = new(fileArtifact)
 var _ CuresExempt = new(fileArtifact)
-var _ RevisionArtifact = new(fileArtifact)
 
 // fileArtifactNamed embeds fileArtifact alongside a caller-supplied name.
 type fileArtifactNamed struct {
@@ -64,8 +63,8 @@ func init() {
 	})
 }
 
-// Inputs returns a nil slice.
+// Dependencies returns a nil slice.
-func (*fileArtifact) Inputs() []Artifact { return nil }
+func (*fileArtifact) Dependencies() []Artifact { return nil }
 
 // IsExclusive returns false: Cure returns a prepopulated buffer.
 func (*fileArtifact) IsExclusive() bool { return false }
@@ -77,20 +76,6 @@ func (a *fileArtifact) Checksum() Checksum {
 	return Checksum(h.Sum(nil))
 }
 
-// Revision satisfies [RevisionArtifact] for incompatible IsExecutable behaviour.
-func (*fileArtifact) Revision() uint64 { return 0 }
-
-// IsExecutable returns whether the contents begin with shebang or the ELF
-// magic number.
-func (a *fileArtifact) IsExecutable() bool {
-	return a != nil &&
-		(bytes.HasPrefix(
-			*a, []byte{'#', '!'},
-		) || bytes.HasPrefix(
-			*a, []byte{0x7f, 'E', 'L', 'F'},
-		))
-}
-
 // Cure returns the caller-supplied data.
 func (a *fileArtifact) Cure(*RContext) (io.ReadCloser, error) {
 	return io.NopCloser(bytes.NewReader(*a)), nil

internal/pkg/file_test.go

@@ -12,41 +12,22 @@ func TestFile(t *testing.T) {
 	t.Parallel()
 
 	want := expectsFile{0}
-	const ident = "N7M6W8-e55Wky_1q1a6qRKFVDw1S5XtPdB4HE2YZObG8OFum8HittyJgZUG5Ru2u"
-	wantShebang := expectsFile("#!/bin/sh\n")
-	const identShebang = "oKTGZb_TRtJf5G1iGGj4SOx1WUbI6YhmsUeEsCNvmK9tZYRwdwQf-DLFUxRPx5qm"
-	wantELF := expectsFile("\x7fELF\xde\xad\xbe\xef")
-	const identELF = "LjeHmIJgD1SiXIH8ewpGRed2_LU84NLapstnOAa_0hxLd8YY7x4KM0aApsj-RwCh"
 	checkWithCache(t, []cacheTestCase{
 		{"file", pkg.CValidateKnown, nil, func(t *testing.T, base *check.Absolute, c *pkg.Cache) {
 			cureMany(t, c, []cureStep{
-				{"short", pkg.NewFile("null", want), base.Append(
+				{"short", pkg.NewFile("null", []byte{0}), base.Append(
 					"identifier",
-					ident,
+					"3376ALA7hIUm2LbzH2fDvRezgzod1eTK_G6XjyOgbM2u-6swvkFaF0BOwSl_juBi",
-				), want, pkg.WNew, nil},
+				), want, nil},
-
-				{"shebang", pkg.NewFile("shebang", wantShebang), base.Append(
-					"identifier",
-					identShebang,
-				), wantShebang, pkg.WNew, nil},
-
-				{"elf", pkg.NewFile("ELF", wantELF), base.Append(
-					"identifier",
-					identELF,
-				), wantELF, pkg.WNew, nil},
 			})
 		}, expectsFS{
 			".": {Mode: fs.ModeDir | 0700},
 
 			"checksum":                            {Mode: fs.ModeDir | 0700},
-			"checksum/" + pkg.Encode(want.hash()):        {Mode: 0400, Data: want},
+			"checksum/" + pkg.Encode(want.hash()): {Mode: 0400, Data: []byte{0}},
-			"checksum/" + pkg.Encode(wantShebang.hash()): {Mode: 0500, Data: wantShebang},
-			"checksum/" + pkg.Encode(wantELF.hash()):     {Mode: 0500, Data: wantELF},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/" + ident:        {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + pkg.Encode(want.hash()))},
+			"identifier/3376ALA7hIUm2LbzH2fDvRezgzod1eTK_G6XjyOgbM2u-6swvkFaF0BOwSl_juBi": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/vsAhtPNo4waRNOASwrQwcIPTqb3SBuJOXw2G4T1mNmVZM-wrQTRllmgXqcIIoRcX")},
-			"identifier/" + identShebang: {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + pkg.Encode(wantShebang.hash()))},
-			"identifier/" + identELF:     {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + pkg.Encode(wantELF.hash()))},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 

internal/pkg/internal/testtool/expected/sum_amd64.go

@@ -1,11 +1,11 @@
 package expected
 
 const (
-	Offline  = "IKmVhALejtYA3JhN1PCfjKF-Dio1XVcOeMWDHhfSHCbb4iBNhGjFy2UspZveZvb8"
+	Offline  = "q5ktDTq0miP-VvB2blxqXQeaRXCUWgP_KbC18KNtUDtyoaI_h5mHmGuPMArVEBDs"
-	OfflineS = "6ZubjSyCnz4-TKgQZi_BbY-JUwsStYCtD_f-BTDOOotfEbqkm47W20AazHRaLviz"
+	OfflineS = "IY91PCtOpCYy21AaIK0c9f8-Z6fb2_2ewoHWkt4dxoLf0GOrWqS8yAGFLV84b1Dw"
-	OvlRoot  = "Yox7WpG8B_OqIXWF4HWFZkUfsEl7DGzpFyZM0qtd9T8nQ-7SAkEUurlAe6_DJ6Iu"
+	OvlRoot  = "NacZGXwuRkTvcHaG08a22ujJ8qCWN0RSoFlRSR5FSt0ZcBbJ28FRvkYsHEtX7G8i"
-	Layers   = "aAwfxDB-efVo379FNl178jK7HEKU3LEjHbZdaVVjk7GnXGZGEANNsXnB3SCUxM9A"
+	Layers   = "WBJDrATtX6rIE5yAu8ePX3WmDF0Tt9kFiue0m3cRnyRoVx1my8a67fh3CAW486oP"
-	Net      = "IU3GwU2jTBd7HjotvFo2wsDWBQGVGpamwiSKdc2G1EnhM-ZaacxAuK6q0wbTVxra"
+	Net      = "CmYtj2sNB3LHtqiDuck_Lz3MjLLIiwyP8N4NDitQ1Icvv__LVP9p8tm-sHeQaKKp"
-	Promote  = "rOjetGHzT_jPErrBR24IAZKDj8Q9dLLqxFQqloMgjsULss0VXDI--n6LxuMBHvmZ"
+	Promote  = "TX3eCloaQFkV-SZIH6Jg6E5WKH--rcXY1P0jnZKmLFKWrNqnOzd4G9eIBh6i5ywN"
-	Work     = "7f9XDeREfvJIjCe0qesND0s0tasExAIcc-OH33-eq9tsrQPUXhJp4KEkpsYH4hCD"
+	Work     = "OuNiLSC68pZhAOr1YQ4WbV1tzASA0nxLEBcK7lO7MqxDY_j8dmP_C612RTuF23Lu"
 )

internal/pkg/internal/testtool/expected/sum_arm64.go

@@ -1,11 +1,11 @@
 package expected
 
 const (
-	Offline  = "MTgCSzwPrzGigp9phvDPRwUTNGLm1KM2EsEtbz-l2cNieqjaGtnzm65CDXlSxXrl"
+	Offline  = "WapqyoPxbWSnq07dWHt71mHaJXq99pAjJfFlELlJljSiZMhTFqqlzU1_mN86shSj"
-	OfflineS = "p89bQg7_jR4nwaSbpEd08ne1jHOEw7Wlnlyv5FHq7ba1Kml3HSBZwEKRzu0gCqEb"
+	OfflineS = "ibQZHcdXgNQ1OiMX1FrburBbGPVvKEHvPilbQCkm_0oV0BQCHomyyTbYNrFMGIwl"
-	OvlRoot  = "9ifwO6MAaV9kTqRR2O5PJzm8XhfXbr50mFLWyEHQm8OHHcJtAEUgXZzJYoZt9YVV"
+	OvlRoot  = "V9anFOiRvjGfAeBhLl14AL8TKdWZyD0WTPYe4fS9mOBw8iW5Lmarvt6TG6MV8uWm"
-	Layers   = "INuGActFPwJtS7mAR9Bkt7FD4yoHlXHSJ9CaSAQJrpkUBL_k815Cs_jvRfxy5-a7"
+	Layers   = "tKx7JNRoSBdK_7MdzI-nwTNV2wmiPzwYdcd17oLmXKL_iLmUzUiA79qTqdrTasrv"
-	Net      = "kJvy24uk4ePvHoxSKf4vMOhR4NxLbmyWlA9bTS7d3z3fE9WF1Tvpao9g-QuYU4vm"
+	Net      = "aXyDLzBCJ9XltXZIfetEVsEkrqHfcXuD5XE_FcUnYbN3emwL55N6P8LlHzNfGnM5"
-	Promote  = "lYqyYrfjPawIbld5Qz0NbKvd_bmI3nJC1eEnlIQWzsjWE9uA1HuKPAaClnDeyG6L"
+	Promote  = "3k4V16n96Lq04gjFSKmm4sFjyQ883FFBNXgTy9s_DjeTwxT3pg_iacEh8yMb_S4m"
-	Work     = "V6k4FqOBMRCmHiqchs5-joVGZ_MhNWZyXm3gdbU0S7S5eMze7G4SwYMTf66ojKQL"
+	Work     = "6Q49MhFWRE3Ne6MycwAotgl1GtoU5WCHqJNWG2byYZCY-zX-IxPrWiKk7bKkNzhE"
 )

internal/pkg/internal/testtool/expected/sum_riscv64.go

@@ -1,11 +1,11 @@
 package expected
 
 const (
-	Offline  = "LlieSHVDe1lnKvfI8t4oGRg_2hPxwyy1drmaqc-EKCOENuS9C2YHrp2VY5pSyhbg"
+	Offline  = "Z6yXE5gOJScL3srmnVMWgCXccDiUNZ5snSrf6RkXuU1_U0rX_kGVwsfHUgNG_awd"
-	OfflineS = "qccjM8oYjUuEYPKFFzAxDFVzMerSUKUZc18NdVQoiPWf-70XOsNK8NaUQqjTgTAD"
+	OfflineS = "zN16xv6LKRJRipUJwupyxg2rZcvf-qpsMn_qCxUmgxlTSuNwYI70ZEb7dHW5k0gO"
-	OvlRoot  = "lpV2bb_KGYFHPiOn-jtGop8K_ew0y1p3BezRp0ebM93_a-T9J-vkqGD5uokda1aN"
+	OvlRoot  = "zYXJHFRLuxvUhuisZEXgGgVvdQd6piMfp5jmtT6jdVjvC2gICXquOq-UTwlrSD5I"
-	Layers   = "sM3DJm210CHPGHkAquIbrXhspB81FpVC60ApQrvJGD5El2i7cSONj7LWf7EWqKpT"
+	Layers   = "_F8EDazHbcLeT0sVSQXRN_kn9IjduqJcDYgzXpsT-hpKU4EBcZ0PISN2zchpqMbm"
-	Net      = "JihQUwsVETRYjb2-yIXLYZ6WVsaFebwl8btSYAsNQ2QapS5MZVaI-dYwrVoySycR"
+	Net      = "CA_FAaSIYJgapBEHV40doxpH23PdUEy_6s1TZc7wfSPN0XYqwGpMceXXDSabGveO"
-	Promote  = "lGqwR4W2OjylSVitMQP1lc6wApOBkbMjsmIqkxQbfEZ3DHEQBbJr84ErW6Xb54zo"
+	Promote  = "_3LPrLp--4h9k4GsNNApu9hHtAafq-GUhfU6d4hJKBDKT3bz_szOsvkXxc5sK53d"
-	Work     = "aZgtyv6aMtoHFkHAaJr6nLaA7N_SHjShgWPyQ5UdzaIqYSiVqvCrZqSokGTCcTii"
+	Work     = "FEgHeiCD_WT4wsfB-9kDH5n6cRWCEYtJmXdKZgmUUukAOoXumH_hLlosXREC-tqq"
 )

internal/pkg/internal/testtool/main.go

@@ -38,15 +38,7 @@ func main() {
 	}
 
 	environ := slices.DeleteFunc(slices.Clone(os.Environ()), func(s string) bool {
-		for _, t := range []string{
+		return s == "CURE_JOBS="+strconv.Itoa(runtime.NumCPU())
-			"CURE_JOBS=" + strconv.Itoa(runtime.NumCPU()),
-			"CURE_LOAD=" + strconv.Itoa(runtime.NumCPU()+2),
-		} {
-			if s == t {
-				return true
-			}
-		}
-		return false
 	})
 
 	var hostNet, layers, promote bool

internal/pkg/ir.go

@@ -90,7 +90,7 @@ type IContext struct {
 	// returns and must not be exposed directly.
 	w io.Writer
 	// Optional [Artifact] to cureRes cache, replaces [IRKindIdent] with
-	// checksum values if non-nil. The pathname field may not be populated.
+	// checksum values if non-nil.
 	inputs map[Artifact]cureRes
 }
 
@@ -173,7 +173,7 @@ func (i *IContext) mustWrite(p []byte) {
 
 // WriteIdent writes the identifier of [Artifact] to the IR. The behaviour of
 // WriteIdent is not defined for an [Artifact] not part of the slice returned by
-// [Artifact.Inputs].
+// [Artifact.Dependencies].
 func (i *IContext) WriteIdent(a Artifact) {
 	buf := i.ic.getIdentBuf()
 	defer i.ic.putIdentBuf(buf)
@@ -235,14 +235,13 @@ func (ic *irCache) Encode(w io.Writer, a Artifact) (err error) {
 }
 
 // encode implements Encode but replaces identifiers with their cured checksums
-// for a non-nil ident. The pathname field is unused. Caller must acquire
+// for a non-nil ident. Caller must acquire Cache.identMu.
-// Cache.identMu.
 func (ic *irCache) encode(
 	w io.Writer,
 	a Artifact,
 	inputs map[Artifact]cureRes,
 ) (err error) {
-	deps := a.Inputs()
+	deps := a.Dependencies()
 	idents := make([]*extIdent, len(deps))
 	if inputs == nil {
 		for i, d := range deps {
@@ -278,11 +277,10 @@ func (ic *irCache) encode(
 		return *a == *b
 	})
 
-	// kind uint64 | rev uint64 | deps_sz uint64
+	// kind uint64 | deps_sz uint64
-	var buf [wordSize * 3]byte
+	var buf [wordSize * 2]byte
 	binary.LittleEndian.PutUint64(buf[:], uint64(a.Kind()))
-	binary.LittleEndian.PutUint64(buf[wordSize:], GetRevision(a))
+	binary.LittleEndian.PutUint64(buf[wordSize:], uint64(len(idents)))
-	binary.LittleEndian.PutUint64(buf[wordSize*2:], uint64(len(idents)))
 	if _, err = w.Write(buf[:]); err != nil {
 		return
 	}
@@ -332,7 +330,7 @@ func (ic *irCache) encodeAll(
 		return
 	}
 
-	for _, d := range a.Inputs() {
+	for _, d := range a.Dependencies() {
 		if err = ic.encodeAll(w, d, encoded); err != nil {
 			return
 		}
@@ -434,9 +432,9 @@ type (
 		// Common buffer for word-sized reads.
 		buf [wordSize]byte
 
-		// Inputs sent before params, sorted by identifier. Resliced on
+		// Dependencies sent before params, sorted by identifier. Resliced on
 		// each call to Next and checked to be depleted during Finalise.
-		inputs []*extIdent
+		deps []*extIdent
 
 		// Number of values already read, -1 denotes a finalised IRReader.
 		count int
@@ -520,7 +518,7 @@ const (
 	irMaxValues = 1 << 12
 
 	// irMaxDeps is the arbitrary maximum number of direct dependencies allowed
-	// to be returned by [Artifact.Inputs] and subsequently decoded by
+	// to be returned by [Artifact.Dependencies] and subsequently decoded by
 	// [IRDecoder].
 	irMaxDeps = 1 << 10
 )
@@ -605,17 +603,17 @@ func (ir *IRReader) mustReadHeader(k IRValueKind) {
 
 // putAll returns all dependency buffers to the underlying [Cache].
 func (ir *IRReader) putAll() {
-	for _, buf := range ir.inputs {
+	for _, buf := range ir.deps {
 		ir.d.c.putIdentBuf(buf)
 	}
-	ir.inputs = nil
+	ir.deps = nil
 }
 
 // DiscardAll discards all unstructured dependencies. This is useful to
 // implementations that encode dependencies as [IRKindIdent] which are read back
 // via ReadIdent.
 func (ir *IRReader) DiscardAll() {
-	if ir.inputs == nil {
+	if ir.deps == nil {
 		panic("attempting to discard dependencies twice")
 	}
 	ir.putAll()
@@ -627,13 +625,13 @@ var ErrDependencyDepleted = errors.New("reading past end of dependencies")
 
 // Next returns the next unstructured dependency.
 func (ir *IRReader) Next() Artifact {
-	if len(ir.inputs) == 0 {
+	if len(ir.deps) == 0 {
 		panic(ErrDependencyDepleted)
 	}
 
-	id := unique.Make(ID(ir.inputs[0][wordSize:]))
+	id := unique.Make(ID(ir.deps[0][wordSize:]))
-	ir.d.c.putIdentBuf(ir.inputs[0])
+	ir.d.c.putIdentBuf(ir.deps[0])
-	ir.inputs = ir.inputs[1:]
+	ir.deps = ir.deps[1:]
 
 	if a, ok := ir.d.ident[id]; !ok {
 		ir.putAll()
@@ -686,8 +684,8 @@ func (ir *IRReader) Finalise() (checksum unique.Handle[Checksum], ok bool) {
 	}
 	ir.r, ir.ibw = nil, nil
 
-	if len(ir.inputs) != 0 {
+	if len(ir.deps) != 0 {
-		panic(MissedDependencyError(len(ir.inputs)))
+		panic(MissedDependencyError(len(ir.deps)))
 	}
 
 	return
@@ -741,15 +739,6 @@ func (ir *IRReader) ReadString() string {
 	return unsafe.String(unsafe.SliceData(p), len(p))
 }
 
-// A RevisionError describes the first [Artifact] in an IR stream claiming a
-// revision not supported by the registered implementation.
-type RevisionError [2]uint64
-
-func (e RevisionError) Error() string {
-	return "claimed revision " + strconv.FormatUint(e[0], 10) +
-		" differs from implementation value " + strconv.FormatUint(e[1], 10)
-}
-
 // decode decodes the next [Artifact] in the IR stream and returns any buffer
 // originating from [Cache] before returning. decode returns [io.EOF] if and
 // only if the underlying [io.Reader] is already read to EOF.
@@ -782,9 +771,6 @@ func (d *IRDecoder) decode() (a Artifact, err error) {
 		return
 	}
 
-	ir.mustRead(ir.buf[:])
-	rev := binary.LittleEndian.Uint64(ir.buf[:])
-
 	defer ir.putAll()
 	ir.mustRead(ir.buf[:])
 	sz := binary.LittleEndian.Uint64(ir.buf[:])
@@ -792,11 +778,11 @@ func (d *IRDecoder) decode() (a Artifact, err error) {
 		err = ErrIRDepend
 		return
 	}
-	ir.inputs = make([]*extIdent, sz)
+	ir.deps = make([]*extIdent, sz)
-	for i := range ir.inputs {
+	for i := range ir.deps {
-		ir.inputs[i] = d.c.getIdentBuf()
+		ir.deps[i] = d.c.getIdentBuf()
 	}
-	for _, buf := range ir.inputs {
+	for _, buf := range ir.deps {
 		ir.mustRead(buf[:])
 	}
 
@@ -805,10 +791,6 @@ func (d *IRDecoder) decode() (a Artifact, err error) {
 		err = syscall.ENOTRECOVERABLE
 		return
 	}
-	if _rev := GetRevision(a); _rev != rev {
-		err = RevisionError{rev, _rev}
-		return
-	}
 
 	if ir.count != -1 {
 		err = ErrRemainingIR
@@ -823,8 +805,8 @@ func (d *IRDecoder) decode() (a Artifact, err error) {
 		d.ident[id] = a
 	} else {
 		d.c.msg.Verbosef(
-			"artifact %s%s%s appeared more than once in IR stream",
+			"artifact %s appeared more than once in IR stream",
-			d.c.sgrIdent, Encode(id.Value()), d.c.sgrRes,
+			Encode(id.Value()),
 		)
 	}
 

internal/pkg/ir_test.go

@@ -135,36 +135,3 @@ func TestIRRoundtrip(t *testing.T) {
 	}
 	checkWithCache(t, testCasesCache)
 }
-
-func TestRevision(t *testing.T) {
-	checkWithCache(t, []cacheTestCase{{"revision", 0, nil,
-		func(t *testing.T, base *check.Absolute, c *pkg.Cache) {
-			a := pkg.NewFile("", nil)
-			var buf bytes.Buffer
-			if err := c.EncodeAll(&buf, a); err != nil {
-				t.Fatal(err)
-			}
-
-			if _, err := c.NewDecoder(
-				bytes.NewReader(buf.Bytes()),
-			).Decode(); err != nil {
-				t.Fatalf("Decode: error = %v", err)
-			}
-
-			p := buf.Bytes()
-			p[8] = 0xfd
-			wantErr := pkg.RevisionError{0xfd, 0}
-			if _, err := c.NewDecoder(
-				bytes.NewReader(p),
-			).Decode(); !reflect.DeepEqual(err, wantErr) {
-				t.Fatalf("Decode: error = %v, want %v", err, wantErr)
-			}
-		}, expectsFS{
-			".":          {Mode: fs.ModeDir | 0700},
-			"checksum":   {Mode: fs.ModeDir | 0700},
-			"identifier": {Mode: fs.ModeDir | 0700},
-			"substitute": {Mode: fs.ModeDir | 0700},
-			"work":       {Mode: fs.ModeDir | 0700},
-		},
-	}})
-}

internal/pkg/net.go

@@ -54,8 +54,8 @@ func init() {
 	})
 }
 
-// Inputs returns a nil slice.
+// Dependencies returns a nil slice.
-func (*httpArtifact) Inputs() []Artifact { return nil }
+func (*httpArtifact) Dependencies() []Artifact { return nil }
 
 // IsExclusive returns false: Cure returns as soon as a response is received.
 func (*httpArtifact) IsExclusive() bool { return false }
@@ -74,9 +74,6 @@ func (e ResponseStatusError) Error() string {
 	return "the requested URL returned non-OK status: " + http.StatusText(int(e))
 }
 
-// IsExecutable returns false.
-func (*httpArtifact) IsExecutable() bool { return false }
-
 // Cure sends the http request and returns the resulting response body reader
 // wrapped to perform checksum validation. It is valid but not encouraged to
 // close the resulting [io.ReadCloser] before it is read to EOF, as that causes

internal/pkg/net_test.go

@@ -104,7 +104,7 @@ func TestHTTPGet(t *testing.T) {
 			)
 			wantPathname := base.Append(
 				"identifier",
-				"COBRUwkxpIvZWJggpRxn7HVXiw6epXZOex8jGRJKpowpwukV7GRBY_LBvOJNQHue",
+				"oM-2pUlk-mOxK1t3aMWZer69UdOQlAXiAgMrpZ1476VoOqpYVP1aGFS9_HYy-D8_",
 			)
 			if pathname, checksum, err := c.Cure(f); err != nil {
 				t.Fatalf("Cure: error = %v", err)
@@ -158,7 +158,7 @@ func TestHTTPGet(t *testing.T) {
 			"checksum/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU": {Mode: 0400, Data: []byte("\x7f\xe1\x69\xa2\xdd\x63\x96\x26\x83\x79\x61\x8b\xf0\x3f\xd5\x16\x9a\x39\x3a\xdb\xcf\xb1\xbc\x8d\x33\xff\x75\xee\x62\x56\xa9\xf0\x27\xac\x13\x94\x69")},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/COBRUwkxpIvZWJggpRxn7HVXiw6epXZOex8jGRJKpowpwukV7GRBY_LBvOJNQHue": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU")},
+			"identifier/oM-2pUlk-mOxK1t3aMWZer69UdOQlAXiAgMrpZ1476VoOqpYVP1aGFS9_HYy-D8_": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fLYGIMHgN1louE-JzITJZJo2SDniPu-IHBXubtvQWFO-hXnDVKNuscV7-zlyr5fU")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 

internal/pkg/pkg.go

@@ -6,7 +6,6 @@ import (
 	"bytes"
 	"cmp"
 	"context"
-	"crypto/rand"
 	"crypto/sha512"
 	"encoding/base64"
 	"encoding/binary"
@@ -16,7 +15,6 @@ import (
 	"io"
 	"io/fs"
 	"maps"
-	"math"
 	"os"
 	"os/signal"
 	"path/filepath"
@@ -280,11 +278,7 @@ func (c *common) GetMessage() message.Msg { return c.cache.msg }
 
 // GetJobs returns the preferred number of jobs to run, when applicable. Its
 // value must not affect cure outcome.
-func (c *common) GetJobs() int { return c.cache.attr.Jobs }
+func (c *common) GetJobs() int { return c.cache.jobs }
-
-// GetLoad returns the preferred load average target, when applicable. Its
-// value must not affect cure outcome.
-func (c *common) GetLoad() int { return c.cache.attr.Load }
 
 // 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]
@@ -309,7 +303,7 @@ func (c *common) Open(a Artifact) (r io.ReadCloser, err error) {
 	}
 
 	var pathname *check.Absolute
-	if pathname, _, _, err = c.cache.cure(a, true, false); err != nil {
+	if pathname, _, err = c.cache.cure(a, true); err != nil {
 		return
 	}
 
@@ -336,8 +330,8 @@ func (c *common) Open(a Artifact) (r io.ReadCloser, err error) {
 type FContext struct {
 	TContext
 
-	// Cured top-level inputs looked up by Pathname.
+	// Cured top-level dependencies looked up by Pathname.
-	inputs map[Artifact]cureRes
+	deps map[Artifact]cureRes
 }
 
 // linkSubstitute links status for substitute if populated.
@@ -362,24 +356,24 @@ func (f *FContext) linkSubstitute(ids, substitutes string) (err error) {
 	return
 }
 
-// InvalidLookupError is the identifier of non-input [Artifact] looked up
+// InvalidLookupError is the identifier of non-dependency [Artifact] looked up
 // via [FContext.GetArtifact] by a misbehaving [Artifact] implementation.
 type InvalidLookupError ID
 
 func (e InvalidLookupError) Error() string {
-	return "attempting to look up non-input artifact " + Encode(e)
+	return "attempting to look up non-dependency artifact " + Encode(e)
 }
 
 var _ error = InvalidLookupError{}
 
 // GetArtifact returns the identifier pathname and checksum of an [Artifact].
 // Calling Pathname with an [Artifact] not part of the slice returned by
-// [Artifact.Inputs] panics.
+// [Artifact.Dependencies] panics.
 func (f *FContext) GetArtifact(a Artifact) (
 	pathname *check.Absolute,
 	checksum unique.Handle[Checksum],
 ) {
-	if res, ok := f.inputs[a]; ok {
+	if res, ok := f.deps[a]; ok {
 		return res.pathname, res.checksum
 	}
 	panic(InvalidLookupError(f.cache.Ident(a).Value()))
@@ -411,13 +405,13 @@ type Artifact interface {
 	// Result must remain identical across multiple invocations.
 	Params(ctx *IContext)
 
-	// Inputs returns a slice of [Artifact] the current instance has access to
+	// Dependencies returns a slice of [Artifact] that the current instance
-	// while producing its output.
+	// depends on to produce its contents.
 	//
 	// Callers must not modify the retuned slice.
 	//
 	// Result must remain identical across multiple invocations.
-	Inputs() []Artifact
+	Dependencies() []Artifact
 
 	// IsExclusive returns whether the [Artifact] is exclusive. Exclusive
 	// artifacts might not run in parallel with each other, and are still
@@ -478,8 +472,6 @@ type KnownIdent interface {
 	// [Artifact]. This value must be known ahead of time and guaranteed to be
 	// unique without having obtained the full contents of the [Artifact].
 	ID() ID
-
-	Artifact
 }
 
 // KnownChecksum is optionally implemented by [Artifact] for an artifact with
@@ -491,8 +483,6 @@ type KnownChecksum interface {
 	//
 	// Result must remain identical across multiple invocations.
 	Checksum() Checksum
-
-	Artifact
 }
 
 // CuresExempt is optionally implemented for an artifact exempt to the
@@ -510,12 +500,6 @@ type CuresExempt interface {
 // FileArtifact does not support fine-grained cancellation. Its context is
 // inherited from the first [TrivialArtifact] or [FloodArtifact] that opens it.
 type FileArtifact interface {
-	// IsExecutable returns whether the resulting filesystem entry should be made
-	// executable, if the [FileArtifact] is cured to the on-disk cache.
-	//
-	// Result must remain identical across multiple invocations.
-	IsExecutable() bool
-
 	// Cure returns [io.ReadCloser] of the full contents of [FileArtifact]. If
 	// [FileArtifact] implements [KnownChecksum], Cure is responsible for
 	// validating any data it produces and must return [ChecksumMismatchError]
@@ -525,35 +509,12 @@ type FileArtifact interface {
 	//
 	// Callers are responsible for closing the resulting [io.ReadCloser].
 	//
-	// The resulting [io.ReadCloser] across multiple invocations must have
+	// Result must remain identical across multiple invocations.
-	// identical behaviour.
 	Cure(r *RContext) (io.ReadCloser, error)
 
 	Artifact
 }
 
-// RevisionArtifact is optionally implemented by an artifact that had undergone
-// internal changes affecting its behaviour while retaining its IR structure.
-type RevisionArtifact interface {
-	// Revision returns the revision number of [Artifact]. This value is always
-	// represented in the IR. An IR stream produced from the same [Kind] with
-	// differing revision is rejected.
-	//
-	// Result must remain identical across multiple invocations.
-	Revision() uint64
-
-	Artifact
-}
-
-// GetRevision returns the revision number of an [Artifact].
-func GetRevision(a Artifact) (revision uint64) {
-	revision = math.MaxUint64
-	if r, ok := a.(RevisionArtifact); ok {
-		revision = r.Revision()
-	}
-	return
-}
-
 // reportName returns a string describing [Artifact] presented to the user.
 func reportName(a Artifact, id unique.Handle[ID]) string {
 	r := Encode(id.Value())
@@ -641,7 +602,7 @@ type cureRes struct {
 	checksum unique.Handle[Checksum]
 }
 
-// A pendingArtifactDep is an input [Artifact] pending concurrent curing,
+// A pendingArtifactDep is a dependency [Artifact] pending concurrent curing,
 // subject to the cures limit. Values pointed to by result addresses are safe
 // to access after the [sync.WaitGroup] associated with this pendingArtifactDep
 // is done. pendingArtifactDep must not be reused or modified after it is sent
@@ -715,15 +676,8 @@ const (
 	// suppressed regardless of [message.Msg] state.
 	CSuppressInit
 
-	// CIgnoreSubstitutes disables content-based input substitution.
+	// CIgnoreSubstitutes disables content-based dependency substitution.
 	CIgnoreSubstitutes
-
-	// CExternShallow arranges for only non-flood inputs to be fetched when
-	// curing an [Artifact] available via the external cache.
-	CExternShallow
-
-	// CColourOutput enables output colouring via ANSI control sequences.
-	CColourOutput
 )
 
 // toplevel holds [context.WithCancel] over caller-supplied context, where all
@@ -775,17 +729,17 @@ type Cache struct {
 	parent context.Context
 	// For deriving curing context, must not be accessed directly.
 	toplevel atomic.Pointer[toplevel]
-	// For waiting on input curing goroutines.
+	// For waiting on dependency curing goroutines.
 	wg sync.WaitGroup
 	// Reports new cures and passed to [Artifact].
 	msg message.Msg
-	// Select graphics rendition sequences, populated by Open.
-	sgrRes, sgrIdent, sgrWarn, sgrErr string
 
 	// Directory where all [Cache] related files are placed.
 	base *check.Absolute
-	// Immutable [CacheAttr] populated by [Open].
+	// Immutable cure options set by [Open].
-	attr CacheAttr
+	flags int
+	// Immutable job count, when applicable.
+	jobs int
 
 	// Must not be exposed directly.
 	irCache
@@ -816,8 +770,6 @@ type Cache struct {
 
 	// Optional external cache implementation.
 	extern External
-	// Caches responses from extern.
-	externCache map[unique.Handle[ID]]unique.Handle[Checksum]
 	// Synchronises access to extern.
 	externMu sync.RWMutex
 
@@ -978,7 +930,6 @@ func readlinkChecksum(a *check.Absolute, buf *Checksum) error {
 // SetExternal sets e as the [External] implementation of c.
 func (c *Cache) SetExternal(e External) {
 	c.externMu.Lock()
-	c.externCache = make(map[unique.Handle[ID]]unique.Handle[Checksum])
 	c.extern = e
 	c.externMu.Unlock()
 }
@@ -1137,10 +1088,7 @@ func (c *Cache) Scrub(checks int) error {
 				} else if !ce.check(ent, want) {
 					wg.Go(func() { condemn(ent) })
 				} else {
-					c.msg.Verbosef(
+					c.msg.Verbosef("%s is consistent", ent.Name())
-						"%s%s%s is consistent",
-						c.sgrIdent, ent.Name(), c.sgrRes,
-					)
 				}
 				p.Put(want)
 				wg.Done()
@@ -1493,7 +1441,7 @@ func (c *Cache) openFile(
 	ctx context.Context,
 	f FileArtifact,
 ) (r io.ReadCloser, err error) {
-	if kc, ok := f.(KnownChecksum); c.attr.Flags&CAssumeChecksum != 0 && ok {
+	if kc, ok := f.(KnownChecksum); c.flags&CAssumeChecksum != 0 && ok {
 		c.checksumMu.RLock()
 		r, err = os.Open(c.base.Append(
 			dirChecksum,
@@ -1516,10 +1464,10 @@ func (c *Cache) openFile(
 		id := c.Ident(f)
 		if c.msg.IsVerbose() {
 			rn := reportName(f, id)
-			c.msg.Verbosef("curing %s%s%s in memory...", c.sgrIdent, rn, c.sgrRes)
+			c.msg.Verbosef("curing %s in memory...", rn)
 			defer func() {
 				if err == nil {
-					c.msg.Verbosef("opened %s%s%s for reading", c.sgrIdent, rn, c.sgrRes)
+					c.msg.Verbosef("opened %s for reading", rn)
 				}
 			}()
 		}
@@ -1678,47 +1626,7 @@ func (c *Cache) Cure(a Artifact) (
 		return
 	}
 
-	pathname, checksum, _, err = c.cure(a, true, false)
+	return c.cure(a, true)
-	return
-}
-
-// CureWhence is like Cure, but returns the whence value.
-func (c *Cache) CureWhence(a Artifact) (
-	pathname *check.Absolute,
-	checksum unique.Handle[Checksum],
-	whence int,
-	err error,
-) {
-	c.abortMu.RLock()
-	defer c.abortMu.RUnlock()
-
-	if err = c.toplevel.Load().ctx.Err(); err != nil {
-		return
-	}
-
-	return c.cure(a, true, false)
-}
-
-// CureNew is like Cure, but always enters the implementation.
-func (c *Cache) CureNew(a Artifact) (
-	pathname *check.Absolute,
-	checksum unique.Handle[Checksum],
-	err error,
-) {
-	c.abortMu.RLock()
-	defer c.abortMu.RUnlock()
-
-	if err = c.toplevel.Load().ctx.Err(); err != nil {
-		return
-	}
-
-	var whence int
-retry:
-	pathname, checksum, whence, err = c.cure(a, true, true)
-	if err != nil || whence == WNew {
-		return
-	}
-	goto retry
 }
 
 // CureError wraps a non-nil error returned attempting to cure an [Artifact].
@@ -1826,10 +1734,6 @@ func (e *DependencyCureError) Error() string {
 
 // enterCure must be called before entering an [Artifact] implementation.
 func (c *Cache) enterCure(a Artifact, curesExempt bool) error {
-	if c.attr.Notify != nil {
-		c.attr.Notify <- true
-	}
-
 	if a.IsExclusive() {
 		c.exclMu.Lock()
 	}
@@ -1852,10 +1756,6 @@ func (c *Cache) enterCure(a Artifact, curesExempt bool) error {
 
 // exitCure must be called after exiting an [Artifact] implementation.
 func (c *Cache) exitCure(a Artifact, curesExempt bool) {
-	if c.attr.Notify != nil {
-		c.attr.Notify <- false
-	}
-
 	if a.IsExclusive() {
 		c.exclMu.Unlock()
 	}
@@ -1906,10 +1806,7 @@ func (mr *measuredReader) Close() (err error) {
 	}
 
 	if n > 0 {
-		mr.c.msg.Verbosef(
+		mr.c.msg.Verbosef("missed %d bytes on measured reader", n)
-			"%smissed %d bytes on measured reader%s",
-			mr.c.sgrWarn, n, mr.c.sgrRes,
-		)
 	}
 
 	if err = mr.r.Close(); err != nil {
@@ -1951,166 +1848,48 @@ func (r *RContext) NewMeasuredReader(
 	return r.cache.newMeasuredReader(rc, checksum)
 }
 
-// tryChecksum dereferences a symlink to a cure outcome.
-func (c *Cache) tryChecksum(pathname *check.Absolute) (
-	checksum unique.Handle[Checksum],
-	err error,
-) {
-	_, err = os.Lstat(pathname.String())
-	if err == nil {
-		var name string
-		if name, err = os.Readlink(pathname.String()); err != nil {
-			return
-		}
-		buf := c.getIdentBuf()
-		err = Decode((*Checksum)(buf[:]), filepath.Base(name))
-		if err == nil {
-			checksum = unique.Make(Checksum(buf[:]))
-		}
-		c.putIdentBuf(buf)
-	}
-	return
-}
-
-// tryLocal attempts to obtain an [Artifact] outcome from the filesystem.
-func (c *Cache) tryLocal(id unique.Handle[ID]) (unique.Handle[Checksum], error) {
-	return c.tryChecksum(c.base.Append(
-		dirIdentifier,
-		Encode(id.Value()),
-	))
-}
-
 // tryExtern attempts to obtain an [Artifact] outcome from extern.
 func (c *Cache) tryExtern(ctx context.Context, id unique.Handle[ID]) (
 	unique.Handle[Checksum],
+	io.ReadCloser,
 	error,
 ) {
 	c.externMu.RLock()
 	defer c.externMu.RUnlock()
 
-	checksum, ok := c.externCache[id]
-	if !ok {
 	if c.extern == nil {
-			return zeroChecksum, nil
+		return zeroChecksum, nil, nil
 	}
 
 	v, err := c.extern.Artifact(ctx, id)
 	if err != nil {
-			return zeroChecksum, err
+		return zeroChecksum, nil, err
 	}
 	if v == nil {
-			return zeroChecksum, nil
+		return zeroChecksum, nil, nil
 	}
-		checksum = unique.Make(*v)
+	checksum := unique.Make(*v)
 
 	var got unique.Handle[Checksum]
 	if _, got, err = c.Cure(c.extern.Checksum(checksum)); err != nil {
-			return checksum, err
+		return checksum, nil, err
 	} else if got != checksum {
-			return zeroChecksum, &ChecksumMismatchError{got.Value(), checksum.Value()}
+		return zeroChecksum, nil, &ChecksumMismatchError{got.Value(), checksum.Value()}
-		}
-	}
-	return checksum, nil
-}
-
-// cureMany concurrently collects outcome of multiple [Artifact].
-func (c *Cache) cureMany(
-	inputs []Artifact,
-	r map[Artifact]cureRes,
-	shallow bool,
-) ([]bool, error) {
-	var wg sync.WaitGroup
-	wg.Add(len(inputs))
-	var mask []bool
-	res := make([]cureRes, len(inputs))
-	errs := make(DependencyCureError, 0, len(inputs))
-	var errsMu sync.Mutex
-	if shallow {
-		mask = make([]bool, len(inputs))
-	}
-	for i, d := range inputs {
-		if shallow {
-			if _, ok := d.(FloodArtifact); ok {
-				mask[i] = true
-				wg.Done()
-				continue
 	}
 
-			if kc, ok := d.(KnownChecksum); ok {
+	var status io.ReadCloser
-				res[i].checksum = unique.Make(kc.Checksum())
+	status, err = c.extern.Status(&RContext{common{ctx, c}}, id)
-				wg.Done()
+	return checksum, status, err
-				continue
-			}
-		}
-		pending := pendingArtifactDep{d, &res[i], &errs, &errsMu, &wg}
-		go pending.cure(c)
-	}
-	wg.Wait()
-
-	if len(errs) > 0 {
-		return mask, &errs
-	}
-	for i, p := range res {
-		if shallow && mask[i] {
-			continue
-		}
-		r[inputs[i]] = p
-	}
-	return mask, nil
-}
-
-// HangingInputError describes an input of an [Artifact] on a sparse cache
-// without an outcome available locally or via [External].
-type HangingInputError unique.Handle[ID]
-
-func (e HangingInputError) Error() string {
-	return Encode(unique.Handle[ID](e).Value()) + " is unavailable"
-}
-
-const (
-	// WNew indicates a cure entering the implementation.
-	WNew = iota
-	// WCache indicates an [Artifact] present in the cache.
-	WCache
-	// WSubstitute indicates an [Artifact] hitting a content-based input
-	// substitution.
-	WSubstitute
-	// WExternal indicates a cure entering the external cache.
-	WExternal
-)
-
-// WhenceString returns a printable string for a whence value.
-func WhenceString(whence int) string {
-	switch whence {
-	case WNew:
-		return "new"
-	case WCache:
-		return "cache"
-	case WSubstitute:
-		return "substitute"
-	case WExternal:
-		return "external"
-
-	default:
-		return "invalid whence " + strconv.Itoa(whence)
-	}
 }
 
 // cure implements Cure without acquiring a read lock on abortMu. cure must not
 // be entered during Abort.
-func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
+func (c *Cache) cure(a Artifact, curesExempt bool) (
 	pathname *check.Absolute,
 	checksum unique.Handle[Checksum],
-	whence int,
 	err error,
 ) {
 	id := c.Ident(a)
-	if rebuild {
-		var v ID
-		_, _ = rand.Read(v[:])
-		id = unique.Make(v)
-	}
-
 	ids := Encode(id.Value())
 	pathname = c.base.Append(
 		dirIdentifier,
@@ -2133,15 +1912,26 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 	)
 	ctx, done, checksum, err = c.loadOrStoreIdent(id)
 	if done == nil {
-		whence = WCache
 		return
 	} else {
 		defer func() { c.finaliseIdent(done, id, checksum, err) }()
 	}
 
-	checksum, err = c.tryChecksum(pathname)
+	_, err = os.Lstat(pathname.String())
-	if err == nil || !errors.Is(err, os.ErrNotExist) {
+	if err == nil {
-		whence = WCache
+		var name string
+		if name, err = os.Readlink(pathname.String()); err != nil {
+			return
+		}
+		buf := c.getIdentBuf()
+		err = Decode((*Checksum)(buf[:]), filepath.Base(name))
+		if err == nil {
+			checksum = unique.Make(Checksum(buf[:]))
+		}
+		c.putIdentBuf(buf)
+		return
+	}
+	if !errors.Is(err, os.ErrNotExist) {
 		return
 	}
 
@@ -2170,9 +1960,8 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 				)
 				if errors.Is(err, os.ErrExist) {
 					c.msg.Verbosef(
-						"creating alternative over %s%s%s for artifact %s%s%s",
+						"creating alternative over %s for artifact %s",
-						c.sgrIdent, Encode(substitute.Value()), c.sgrRes,
+						Encode(substitute.Value()), ids,
-						c.sgrIdent, ids, c.sgrRes,
 					)
 					err = nil
 				}
@@ -2197,7 +1986,7 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 			checksums,
 		)
 
-		if c.attr.Flags&CAssumeChecksum != 0 {
+		if c.flags&CAssumeChecksum != 0 {
 			c.checksumMu.RLock()
 			checksumFi, err = os.Stat(checksumPathname.String())
 			c.checksumMu.RUnlock()
@@ -2212,21 +2001,17 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 		}
 	}
 
-	whence = WNew
 	if c.msg.IsVerbose() {
 		rn := reportName(a, id)
-		c.msg.Verbosef("curing %s%s%s...", c.sgrIdent, rn, c.sgrRes)
+		c.msg.Verbosef("curing %s...", rn)
 		defer func() {
 			if err != nil {
 				return
 			}
 			if checksums != "" {
-				c.msg.Verbosef(
+				c.msg.Verbosef("cured %s checksum %s", rn, checksums)
-					"cured %s%s%s checksum %s%s%s",
-					c.sgrIdent, rn, c.sgrRes,
-					c.sgrIdent, checksums, c.sgrRes)
 			} else {
-				c.msg.Verbosef("cured %s%s%s", c.sgrIdent, rn, c.sgrRes)
+				c.msg.Verbosef("cured %s", rn)
 			}
 		}()
 	}
@@ -2234,7 +2019,6 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 	// cure FileArtifact outside type switch to skip TContext initialisation
 	if f, ok := a.(FileArtifact); ok {
 		if checksumFi != nil {
-			whence = WCache
 			if !checksumFi.Mode().IsRegular() {
 				// unreachable
 				err = InvalidFileModeError(checksumFi.Mode())
@@ -2242,17 +2026,12 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 			return
 		}
 
-		perm := os.FileMode(0400)
-		if f.IsExecutable() {
-			perm = 0500
-		}
-
 		work := c.base.Append(dirWork, ids)
 		var w *os.File
 		if w, err = os.OpenFile(
 			work.String(),
 			os.O_CREATE|os.O_EXCL|os.O_WRONLY,
-			perm,
+			0400,
 		); err != nil {
 			return
 		}
@@ -2274,7 +2053,7 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 		}
 		r, err = f.Cure(&RContext{common{ctx, c}})
 		if err == nil {
-			if checksumPathname == nil || c.attr.Flags&CValidateKnown != 0 {
+			if checksumPathname == nil || c.flags&CValidateKnown != 0 {
 				h := sha512.New384()
 				hbw := c.getWriter(h)
 				_, err = io.Copy(w, io.TeeReader(r, hbw))
@@ -2291,7 +2070,7 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 					if checksumPathname == nil {
 						checksum = unique.Make(Checksum(buf[:]))
 						checksums = Encode(Checksum(buf[:]))
-					} else if c.attr.Flags&CValidateKnown != 0 {
+					} else if c.flags&CValidateKnown != 0 {
 						if got := Checksum(buf[:]); got != checksum.Value() {
 							err = &ChecksumMismatchError{
 								Got:  got,
@@ -2321,11 +2100,7 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 		c.exitCure(a, curesExempt)
 		if err != nil {
 			if c.msg.IsVerbose() {
-				c.msg.Verbosef(
+				c.msg.Verbosef("cure file %s: %v", reportName(f, id), err)
-					"cure file %s%s%s: %s%v%s",
-					c.sgrIdent, reportName(f, id), c.sgrRes,
-					c.sgrErr, err, c.sgrRes,
-				)
 			}
 			return
 		}
@@ -2348,7 +2123,6 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 	}
 
 	if checksumFi != nil {
-		whence = WCache
 		if !checksumFi.Mode().IsDir() {
 			// unreachable
 			err = InvalidFileModeError(checksumFi.Mode())
@@ -2372,79 +2146,37 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 		c.exitCure(a, curesExempt)
 		if err != nil {
 			if c.msg.IsVerbose() {
-				c.msg.Verbosef(
+				c.msg.Verbosef("cure trivial %s: %v", reportName(ca, id), err)
-					"cure trivial %s%s%s: %s%v%s",
-					c.sgrIdent, reportName(ca, id), c.sgrRes,
-					c.sgrErr, err, c.sgrRes,
-				)
 			}
 			return
 		}
 		break
 
 	case FloodArtifact:
-		var externChecksum unique.Handle[Checksum]
+		deps := a.Dependencies()
-		if externChecksum, err = c.tryExtern(ctx, id); err != nil {
+		f := FContext{t, make(map[Artifact]cureRes, len(deps))}
-			if c.msg.IsVerbose() {
+
-				c.msg.Verbosef(
+		var wg sync.WaitGroup
-					"extern %s%s%s: %s%v%s",
+		wg.Add(len(deps))
-					c.sgrIdent, reportName(ca, id), c.sgrRes,
+		res := make([]cureRes, len(deps))
-					c.sgrErr, err, c.sgrRes,
+		errs := make(DependencyCureError, 0, len(deps))
-				)
+		var errsMu sync.Mutex
+		for i, d := range deps {
+			pending := pendingArtifactDep{d, &res[i], &errs, &errsMu, &wg}
+			go pending.cure(c)
 		}
+		wg.Wait()
+
+		if len(errs) > 0 {
+			err = &errs
 			return
 		}
-		extern := externChecksum != zeroChecksum
+		for i, p := range res {
-		shallow := extern && c.attr.Flags&CExternShallow != 0
+			f.deps[deps[i]] = p
-
-		inputs := a.Inputs()
-		f := FContext{t, make(map[Artifact]cureRes, len(inputs))}
-		var mask []bool
-		if mask, err = c.cureMany(inputs, f.inputs, shallow); err != nil {
-			return
-		}
-
-		if shallow {
-			for i, d := range inputs {
-				if !mask[i] {
-					continue
-				}
-
-				if kc, ok := d.(KnownChecksum); ok {
-					f.inputs[d] = cureRes{checksum: unique.Make(kc.Checksum())}
-					continue
-				}
-
-				var sum unique.Handle[Checksum]
-				did := c.Ident(d)
-				sum, err = c.tryLocal(did)
-				if err != nil {
-					if !errors.Is(err, os.ErrNotExist) {
-						return
-					}
-
-					sum, err = c.tryExtern(ctx, did)
-					if err != nil {
-						return
-					}
-					if sum == zeroChecksum {
-						if c.msg.IsVerbose() {
-							c.msg.Verbosef(
-								"input %s%s%s not available",
-								c.sgrIdent, reportName(d, did), c.sgrRes,
-							)
-						}
-						err = HangingInputError(did)
-						return
-					}
-				}
-
-				f.inputs[d] = cureRes{checksum: sum}
-			}
 		}
 
 		sh := sha512.New384()
-		err = c.encode(sh, a, f.inputs)
+		err = c.encode(sh, a, f.deps)
 		if err != nil {
 			return
 		}
@@ -2459,14 +2191,13 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 			substitutes,
 		)
 
-		if !rebuild && c.attr.Flags&CIgnoreSubstitutes == 0 {
+		if c.flags&CIgnoreSubstitutes == 0 {
 			var substituteChecksum unique.Handle[Checksum]
 			substituteChecksum, err = c.loadSubstitute(substitute)
 			if err != nil {
 				return
 			}
 			if substituteChecksum != zeroChecksum {
-				whence = WSubstitute
 				checksum = substituteChecksum
 				checksums = Encode(checksum.Value())
 				checksumPathname = c.base.Append(
@@ -2490,25 +2221,25 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 
 		defer f.destroy(&err)
 
-		if extern {
+		var (
-			whence = WExternal
+			externChecksum unique.Handle[Checksum]
-			if checksum != zeroChecksum && externChecksum != checksum {
+			externStatus   io.ReadCloser
-				err = &ChecksumMismatchError{externChecksum.Value(), checksum.Value()}
-				if c.msg.IsVerbose() {
-					c.msg.Verbosef(
-						"extern %s%s%s: %s%v%s",
-						c.sgrIdent, reportName(ca, id), c.sgrRes,
-						c.sgrErr, err, c.sgrRes,
 		)
+		if externChecksum, externStatus, err = c.tryExtern(ctx, id); err != nil {
+			if c.msg.IsVerbose() {
+				c.msg.Verbosef("extern %s: %v", reportName(ca, id), err)
 			}
 			return
 		}
-
+		if externChecksum != zeroChecksum {
-			var externStatus io.ReadCloser
+			if checksum != zeroChecksum && externChecksum != checksum {
-			c.externMu.RLock()
+				if externStatus != nil {
-			externStatus, err = c.extern.Status(&RContext{common{ctx, c}}, id)
+					_ = externStatus.Close()
-			c.externMu.RUnlock()
+				}
-			if err != nil {
+				err = &ChecksumMismatchError{externChecksum.Value(), checksum.Value()}
+				if c.msg.IsVerbose() {
+					c.msg.Verbosef("extern %s: %v", reportName(ca, id), err)
+				}
 				return
 			}
 
@@ -2528,12 +2259,10 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 					return
 				} else if err = externStatus.Close(); err != nil {
 					return
-				} else if !rebuild {
+				} else if err = f.linkSubstitute(ids, substitutes); err != nil {
-					if err = f.linkSubstitute(ids, substitutes); err != nil {
 					return
 				}
 			}
-			}
 			return
 		}
 
@@ -2543,16 +2272,12 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 		err = ca.Cure(&f)
 		c.exitCure(a, curesExempt)
 
-		if !rebuild && err == nil {
+		if err == nil {
 			err = f.linkSubstitute(ids, substitutes)
 		}
 		if err != nil {
 			if c.msg.IsVerbose() {
-				c.msg.Verbosef(
+				c.msg.Verbosef("cure %s: %v", reportName(ca, id), err)
-					"cure %s%s%s: %s%v%s",
-					c.sgrIdent, reportName(ca, id), c.sgrRes,
-					c.sgrErr, err, c.sgrRes,
-				)
 			}
 			return
 		}
@@ -2603,11 +2328,7 @@ func (c *Cache) cure(a Artifact, curesExempt, rebuild bool) (
 			Want: checksum.Value(),
 		}
 		if c.msg.IsVerbose() {
-			c.msg.Verbosef(
+			c.msg.Verbosef("validate %s: %v", reportName(a, id), err)
-				"validate %s%s%s: %s%v%s",
-				c.sgrIdent, reportName(a, id), c.sgrRes,
-				c.sgrErr, err, c.sgrRes,
-			)
 		}
 		return
 	}
@@ -2645,7 +2366,7 @@ func (pending *pendingArtifactDep) cure(c *Cache) {
 	defer pending.Done()
 
 	var err error
-	pending.resP.pathname, pending.resP.checksum, _, err = c.cure(pending.a, false, false)
+	pending.resP.pathname, pending.resP.checksum, err = c.cure(pending.a, false)
 	if err == nil {
 		return
 	}
@@ -2749,10 +2470,6 @@ func (c *Cache) Close() {
 	c.wg.Wait()
 	close(c.cures)
 	c.unlock()
-
-	if c.attr.Notify != nil {
-		close(c.attr.Notify)
-	}
 }
 
 // UnsupportedVariantError describes an on-disk cache with an extension variant
@@ -2769,24 +2486,6 @@ var (
 	ErrWouldPromote = errors.New("operation would promote unextended cache")
 )
 
-// CacheAttr holds the attributes that will be applied to a new [Cache] opened
-// by [Open].
-type CacheAttr struct {
-	// Concurrent cures of a [FloodArtifact] dependency graph.
-	Cures int
-	// Options affecting [Cache] behaviour.
-	Flags int
-	// Preferred job count, when applicable.
-	Jobs int
-	// Preferred loadavg target, when applicable.
-	Load int
-	// Optional cure entry and exit notification.
-	Notify chan<- bool
-
-	// Omit the [lockedfile] lock.
-	skipLock bool
-}
-
 // Open returns the address of a newly opened instance of [Cache].
 //
 // Concurrent cures of a [FloodArtifact] dependency graph is limited to the
@@ -2803,8 +2502,20 @@ type CacheAttr struct {
 func Open(
 	ctx context.Context,
 	msg message.Msg,
+	flags, cures, jobs int,
 	base *check.Absolute,
-	attr *CacheAttr,
+) (*Cache, error) {
+	return open(ctx, msg, flags, cures, jobs, base, true)
+}
+
+// open implements Open but allows omitting the [lockedfile] lock when called
+// from a test. This is used to simulate invalid states in the test suite.
+func open(
+	ctx context.Context,
+	msg message.Msg,
+	flags, cures, jobs int,
+	base *check.Absolute,
+	lock bool,
 ) (*Cache, error) {
 	openMu.Lock()
 	defer openMu.Unlock()
@@ -2814,19 +2525,11 @@ func Open(
 		panic("attempting to open cache with incomplete variant setup")
 	}
 
-	var a CacheAttr
+	if cures < 1 {
-	if attr != nil {
+		cures = runtime.NumCPU()
-		a = *attr
 	}
-
+	if jobs < 1 {
-	if a.Cures < 1 {
+		jobs = runtime.NumCPU()
-		a.Cures = runtime.NumCPU()
-	}
-	if a.Jobs < 1 {
-		a.Jobs = runtime.NumCPU()
-	}
-	if a.Load < 1 {
-		a.Load = runtime.NumCPU() + 2
 	}
 
 	for _, name := range []string{
@@ -2848,8 +2551,9 @@ func Open(
 	c := Cache{
 		parent: ctx,
 
-		cures: make(chan struct{}, a.Cures),
+		cures: make(chan struct{}, cures),
-		attr:  a,
+		flags: flags,
+		jobs:  jobs,
 
 		msg:  msg,
 		base: base,
@@ -2866,7 +2570,7 @@ func Open(
 	}
 	c.toplevel.Store(newToplevel(ctx))
 
-	if !a.skipLock || !testing.Testing() {
+	if lock || !testing.Testing() {
 		if unlock, err := lockedfile.MutexAt(
 			base.Append(fileLock).String(),
 		).Lock(); err != nil {
@@ -2927,7 +2631,7 @@ func Open(
 		}
 	} else if s := string(p); s == "" {
 		if extension != "" {
-			if a.Flags&CPromoteVariant == 0 {
+			if flags&CPromoteVariant == 0 {
 				c.unlock()
 				return nil, ErrWouldPromote
 			}
@@ -2948,13 +2652,6 @@ func Open(
 		return nil, UnsupportedVariantError(s)
 	}
 
-	if a.Flags&CColourOutput != 0 {
-		c.sgrRes = "\x1b[0m"
-		c.sgrIdent = "\x1b[1m"
-		c.sgrWarn = "\x1b[35m"
-		c.sgrErr = "\x1b[1;31m"
-	}
-
 	return &c, nil
 }
 
@@ -2973,8 +2670,6 @@ func IsCollected(err error) bool { return errors.As(err, new(Collected)) }
 // [pkg.Artifact]. It returns [Collected].
 type Collect []Artifact
 
-var _ Artifact = new(Collect)
-
 // Cure returns [Collected].
 func (*Collect) Cure(*FContext) error { return Collected{} }
 
@@ -2984,8 +2679,8 @@ func (*Collect) Kind() Kind { return kindCollection }
 // Params is a noop: dependencies are already represented in the header.
 func (*Collect) Params(*IContext) {}
 
-// Inputs returns [Collect] as is.
+// Dependencies returns [Collect] as is.
-func (c *Collect) Inputs() []Artifact { return *c }
+func (c *Collect) Dependencies() []Artifact { return *c }
 
 // IsExclusive returns false: Cure is a noop.
 func (*Collect) IsExclusive() bool { return false }

internal/pkg/pkg_test.go

@@ -35,14 +35,14 @@ import (
 	"hakurei.app/message"
 )
 
-var skipLock = func() pkg.CacheAttr {
+//go:linkname unsafeOpen hakurei.app/internal/pkg.open
-	var attr pkg.CacheAttr
+func unsafeOpen(
-	*(*bool)(unsafe.Pointer(reflect.ValueOf(&attr).
+	ctx context.Context,
-		Elem().
+	msg message.Msg,
-		FieldByName("skipLock").
+	flags, cures, jobs int,
-		UnsafeAddr())) = true
+	base *check.Absolute,
-	return attr
+	lock bool,
-}()
+) (*pkg.Cache, error)
 
 var (
 	// extension is a string uniquely identifying a set of custom [Artifact]
@@ -142,7 +142,7 @@ type stubArtifact struct {
 
 func (a *stubArtifact) Kind() pkg.Kind               { return a.kind }
 func (a *stubArtifact) Params(ctx *pkg.IContext)     { ctx.Write(a.params) }
-func (a *stubArtifact) Inputs() []pkg.Artifact     { return a.deps }
+func (a *stubArtifact) Dependencies() []pkg.Artifact { return a.deps }
 func (a *stubArtifact) Cure(t *pkg.TContext) error   { return a.cure(t) }
 func (*stubArtifact) IsExclusive() bool              { return false }
 
@@ -158,7 +158,7 @@ type stubArtifactF struct {
 
 func (a *stubArtifactF) Kind() pkg.Kind               { return a.kind }
 func (a *stubArtifactF) Params(ctx *pkg.IContext)     { ctx.Write(a.params) }
-func (a *stubArtifactF) Inputs() []pkg.Artifact     { return a.deps }
+func (a *stubArtifactF) Dependencies() []pkg.Artifact { return a.deps }
 func (a *stubArtifactF) Cure(f *pkg.FContext) error   { return a.cure(f) }
 func (a *stubArtifactF) IsExclusive() bool            { return a.excl }
 
@@ -170,8 +170,6 @@ type stubFile struct {
 	stubArtifact
 }
 
-func (*stubFile) IsExecutable() bool { return false }
-
 func (a *stubFile) Cure(*pkg.RContext) (io.ReadCloser, error) {
 	return io.NopCloser(bytes.NewReader(a.data)), a.err
 }
@@ -332,7 +330,7 @@ func TestIdent(t *testing.T) {
 			},
 			nil,
 		}, unique.Make[pkg.ID](pkg.MustDecode(
-			"fkmge-H56Ph2LzNNbEUjTypes8LfOxrF_CEXg07kq6ho_nbTNvzQde9-bjB7gyB_",
+			"97Y85QewssfPbNIN9cyNhzD4e6dLHcDTU8rb2c34k-aCrZfBNXFUc0duPiLFFcw_",
 		))},
 	}
 
@@ -341,7 +339,7 @@ func TestIdent(t *testing.T) {
 	var cache *pkg.Cache
 	if a, err := check.NewAbs(t.TempDir()); err != nil {
 		t.Fatal(err)
-	} else if cache, err = pkg.Open(t.Context(), msg, a, nil); err != nil {
+	} else if cache, err = pkg.Open(t.Context(), msg, 0, 0, 0, a); err != nil {
 		t.Fatal(err)
 	}
 	t.Cleanup(cache.Close)
@@ -521,10 +519,7 @@ func checkWithCache(t *testing.T, testCases []cacheTestCase) {
 			}
 
 			var scrubFunc func() error // scrub after hashing
-			if c, err := pkg.Open(t.Context(), msg, base, &pkg.CacheAttr{
+			if c, err := pkg.Open(t.Context(), msg, flags, 1<<4, 0, base); err != nil {
-				Cures: 1 << 4,
-				Flags: flags,
-			}); err != nil {
 				t.Fatalf("Open: error = %v", err)
 			} else {
 				t.Cleanup(c.Close)
@@ -632,7 +627,6 @@ type cureStep struct {
 
 	pathname *check.Absolute
 	output   expectsKnown
-	whence   int
 	err      error
 }
 
@@ -652,7 +646,7 @@ func cureMany(t *testing.T, c *pkg.Cache, steps []cureStep) {
 
 	for _, step := range steps {
 		t.Log("cure step:", step.name)
-		if pathname, checksum, whence, err := c.CureWhence(step.a); !reflect.DeepEqual(err, step.err) {
+		if pathname, checksum, err := c.Cure(step.a); !reflect.DeepEqual(err, step.err) {
 			faults, _err := c.ReadFaults(step.a)
 			if _err != nil {
 				t.Errorf("ReadFaults: error = %v", _err)
@@ -669,8 +663,6 @@ func cureMany(t *testing.T, c *pkg.Cache, steps []cureStep) {
 				t.Logf("faulting cure terminated %s ago", time.Since(faults[0].Time()))
 			}
 			t.Fatalf("Cure: error = %v, want %v", err, step.err)
-		} else if step.whence != whence {
-			t.Fatalf("Cure: whence = %s, want %s", pkg.WhenceString(whence), pkg.WhenceString(step.whence))
 		} else if step.pathname != ignorePathname && !pathname.Is(step.pathname) {
 			t.Fatalf("Cure: pathname = %q, want %q", pathname, step.pathname)
 		} else if step.output == nil || checksum != makeChecksumH(step.output.hash()) {
@@ -782,28 +774,28 @@ func TestCache(t *testing.T) {
 					identifier,
 					new(testdata.hash()),
 					testdata, nil,
-				), wantPathname, testdata, pkg.WNew, nil},
+				), wantPathname, testdata, nil},
 
 				{"identical content", newStubFile(
 					pkg.KindHTTPGet,
 					identifier0,
 					new(testdata.hash()),
 					testdata, nil,
-				), wantPathname0, testdata, pkg.WCache, nil},
+				), wantPathname0, testdata, nil},
 
 				{"existing entry", newStubFile(
 					pkg.KindHTTPGet,
 					identifier,
 					new(testdata.hash()),
 					testdata, nil,
-				), wantPathname, testdata, pkg.WCache, nil},
+				), wantPathname, testdata, nil},
 
 				{"checksum mismatch", newStubFile(
 					pkg.KindHTTPGet,
 					pkg.ID{0xff, 0},
 					new(pkg.Checksum),
 					testdata, nil,
-				), nil, nil, pkg.WNew, &pkg.ChecksumMismatchError{
+				), nil, nil, &pkg.ChecksumMismatchError{
 					Got: testdata.hash(),
 				}},
 
@@ -824,13 +816,13 @@ func TestCache(t *testing.T) {
 					0x36, 0x65, 0x59, 0x33, 0xec, 0x2b,
 					0x41, 0x34, 0x65, 0x96, 0x68, 0x17,
 					0xa9, 0xc2, 0x08, 0xa1, 0x17, 0x17,
-				}, pkg.WNew, nil},
+				}, nil},
 
 				{"incomplete implementation", struct{ pkg.Artifact }{&stubArtifact{
 					kind:   pkg.KindExec,
 					params: []byte("artifact overridden to be incomplete"),
-				}}, nil, nil, pkg.WNew, pkg.InvalidArtifactError(pkg.MustDecode(
+				}}, nil, nil, pkg.InvalidArtifactError(pkg.MustDecode(
-					"poVrv3zNINbHd-WUJihwgWQwJpbHURFHfpY7Zux-ztto_bQhhS5PdpbNMjdkXv-V",
+					"E__uZ1sLIvb84vzSm5Uezb03RogsiaeTt1nfIVv8TKnnf4LqwtSi-smdHhlkZrUJ",
 				))},
 
 				{"error passthrough", newStubFile(
@@ -838,18 +830,18 @@ func TestCache(t *testing.T) {
 					pkg.ID{0xff, 1},
 					nil,
 					nil, stub.UniqueError(0xcafe),
-				), nil, nil, pkg.WNew, stub.UniqueError(0xcafe)},
+				), nil, nil, stub.UniqueError(0xcafe)},
 
 				{"error caching", newStubFile(
 					pkg.KindHTTPGet,
 					pkg.ID{0xff, 1},
 					nil,
 					nil, nil,
-				), nil, nil, pkg.WCache, stub.UniqueError(0xcafe)},
+				), nil, nil, stub.UniqueError(0xcafe)},
 
 				{"cache hit bad type", overrideChecksum{testdata.hash(), overrideIdent{pkg.ID{0xff, 2}, &stubArtifact{
 					kind: pkg.KindTar,
-				}}}, nil, nil, pkg.WCache, pkg.InvalidFileModeError(
+				}}}, nil, nil, pkg.InvalidFileModeError(
 					0400,
 				)},
 
@@ -861,7 +853,7 @@ func TestCache(t *testing.T) {
 					cure: func(f *pkg.FContext) error {
 						panic("attempting to cure impossible artifact")
 					},
-				}, nil, nil, pkg.WNew, &pkg.DependencyCureError{
+				}, nil, nil, &pkg.DependencyCureError{
 					{
 						A: failingFile,
 						Err: struct {
@@ -872,10 +864,10 @@ func TestCache(t *testing.T) {
 				}},
 			})
 
-			if c0, err := pkg.Open(
+			if c0, err := unsafeOpen(
 				t.Context(),
 				message.New(nil),
-				base, &skipLock,
+				0, 0, 0, base, false,
 			); err != nil {
 				t.Fatalf("open: error = %v", err)
 			} else {
@@ -883,7 +875,7 @@ func TestCache(t *testing.T) {
 				cureMany(t, c0, []cureStep{
 					{"cache hit ident", overrideIdent{
 						id: identifier,
-					}, wantPathname, testdata, pkg.WCache, nil},
+					}, wantPathname, testdata, nil},
 
 					{"cache miss checksum match", newStubFile(
 						pkg.KindHTTPGet,
@@ -894,7 +886,7 @@ func TestCache(t *testing.T) {
 					), base.Append(
 						"identifier",
 						pkg.Encode(testdata.hash()),
-					), testdata, pkg.WNew, nil},
+					), testdata, nil},
 				})
 
 				// cure after close
@@ -1024,30 +1016,30 @@ func TestCache(t *testing.T) {
 				{"initial directory", overrideChecksum{want.hash(), overrideIdent{id, &stubArtifact{
 					kind: pkg.KindTar,
 					cure: makeSample,
-				}}}, wantPathname, want, pkg.WNew, nil},
+				}}}, wantPathname, want, nil},
 
 				{"identical identifier", overrideChecksum{want.hash(), overrideIdent{id, &stubArtifact{
 					kind: pkg.KindTar,
-				}}}, wantPathname, want, pkg.WCache, nil},
+				}}}, wantPathname, want, nil},
 
 				{"identical checksum", overrideIdent{id0, &stubArtifact{
 					kind: pkg.KindTar,
 					cure: makeSample,
-				}}, wantPathname0, want, pkg.WNew, nil},
+				}}, wantPathname0, want, nil},
 
 				{"cure fault", overrideIdent{pkg.ID{0xff, 0}, &stubArtifact{
 					kind: pkg.KindTar,
 					cure: func(t *pkg.TContext) error {
 						return makeGarbage(t.GetWorkDir(), stub.UniqueError(0xcafe))
 					},
-				}}, nil, nil, pkg.WNew, stub.UniqueError(0xcafe)},
+				}}, nil, nil, stub.UniqueError(0xcafe)},
 
 				{"checksum mismatch", overrideChecksum{pkg.Checksum{}, overrideIdent{pkg.ID{0xff, 1}, &stubArtifact{
 					kind: pkg.KindTar,
 					cure: func(t *pkg.TContext) error {
 						return makeGarbage(t.GetWorkDir(), nil)
 					},
-				}}}, nil, nil, pkg.WNew, &pkg.ChecksumMismatchError{
+				}}}, nil, nil, &pkg.ChecksumMismatchError{
 					Got: pkg.MustDecode(
 						"CUx-3hSbTWPsbMfDhgalG4Ni_GmR9TnVX8F99tY_P5GtkYvczg9RrF5zO0jX9XYT",
 					),
@@ -1058,7 +1050,7 @@ func TestCache(t *testing.T) {
 					pkg.ID{0xff, 2},
 					new(want.hash()),
 					testdata, nil,
-				), nil, nil, pkg.WCache, pkg.InvalidFileModeError(
+				), nil, nil, pkg.InvalidFileModeError(
 					fs.ModeDir | 0500,
 				)},
 
@@ -1072,7 +1064,7 @@ func TestCache(t *testing.T) {
 						_, err = io.ReadAll(r)
 						return err
 					},
-				}}, nil, nil, pkg.WNew, &os.PathError{
+				}}, nil, nil, &os.PathError{
 					Op: "read",
 					Path: base.Append(
 						"checksum",
@@ -1086,14 +1078,14 @@ func TestCache(t *testing.T) {
 					cure: func(t *pkg.TContext) error {
 						return nil
 					},
-				}}, nil, nil, pkg.WNew, pkg.NoOutputError{}},
+				}}, nil, nil, pkg.NoOutputError{}},
 
 				{"file output", overrideIdent{pkg.ID{0xff, 5}, &stubArtifact{
 					kind: pkg.KindTar,
 					cure: func(t *pkg.TContext) error {
 						return os.WriteFile(t.GetWorkDir().String(), []byte{0}, 0400)
 					},
-				}}, nil, nil, pkg.WNew, errors.New("non-file artifact produced regular file")},
+				}}, nil, nil, errors.New("non-file artifact produced regular file")},
 
 				{"symlink output", overrideIdent{pkg.ID{0xff, 6}, &stubArtifact{
 					kind: pkg.KindTar,
@@ -1103,7 +1095,7 @@ func TestCache(t *testing.T) {
 							t.GetWorkDir().String(),
 						)
 					},
-				}}, nil, nil, pkg.WNew, pkg.InvalidFileModeError(
+				}}, nil, nil, pkg.InvalidFileModeError(
 					fs.ModeSymlink | 0777,
 				)},
 
@@ -1123,8 +1115,8 @@ func TestCache(t *testing.T) {
 					},
 				}, base.Append(
 					"identifier",
-					"gIH5eti07nBAhVti3ZTn8EIGOBCZWWvNpxg5CmCZlDzIC4mBdomPmQLeEpf1IQg9",
+					"xMDWovje7OfyIaDy_2VnjpKxRqSOQ_LoeD946t-3WsS2V2SeMJ7nDGrNfpa4Pbc-",
-				), want, pkg.WNew, nil},
+				), want, nil},
 
 				{"substitutable", &stubArtifactF{
 					kind:   pkg.KindExec,
@@ -1142,14 +1134,14 @@ func TestCache(t *testing.T) {
 					},
 				}, base.Append(
 					"identifier",
-					"VGjpp7NVw3OYLpgOQumfM0KcJgY3suz6torykUczcg4bGT24ySkPn5hy-4dNqqkR",
+					"k2ilgG5KQ9NXnMoT2oB6NdwOnSPRn_H24oXQc4l6qOYIxIG9XfuEczeyrR8UEv_f",
-				), want, pkg.WSubstitute, nil},
+				), want, nil},
 			})
 
-			if c0, err := pkg.Open(
+			if c0, err := unsafeOpen(
 				t.Context(),
 				message.New(nil),
-				base, &skipLock,
+				0, 0, 0, base, false,
 			); err != nil {
 				t.Fatalf("open: error = %v", err)
 			} else {
@@ -1171,8 +1163,8 @@ func TestCache(t *testing.T) {
 						},
 					}, base.Append(
 						"identifier",
-						"zeZ4JEZ0atAKl6Am67cBID6-KR18nZGgeYfU4qTuYaWhQC4eAn0dyTXdIBH9Bos8",
+						"_EmV5nsYZ2UWHgRmLDMU8i-rJWDx-kv5_1pFrzQI7vMMCM5mAXivO8UZtVfOqMR_",
-					), want, pkg.WSubstitute, nil},
+					), want, nil},
 				})
 			}
 
@@ -1196,15 +1188,15 @@ func TestCache(t *testing.T) {
 			"identifier": {Mode: fs.ModeDir | 0700},
 			"identifier/HnySzeLQvSBZuTUcvfmLEX_OmH4yJWWH788NxuLuv7kVn8_uPM6Ks4rqFWM2NZJY": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/qRN6in76LndiiOZJheHkwyW8UT1N5-f-bXvHfDvwrMw2fSkOoZdh8pWE1qhLk65b")},
 			"identifier/Zx5ZG9BAwegNT3zQwCySuI2ktCXxNgxirkGLFjW4FW06PtojYVaCdtEw8yuntPLa": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/qRN6in76LndiiOZJheHkwyW8UT1N5-f-bXvHfDvwrMw2fSkOoZdh8pWE1qhLk65b")},
-			"identifier/zeZ4JEZ0atAKl6Am67cBID6-KR18nZGgeYfU4qTuYaWhQC4eAn0dyTXdIBH9Bos8": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/qRN6in76LndiiOZJheHkwyW8UT1N5-f-bXvHfDvwrMw2fSkOoZdh8pWE1qhLk65b")},
+			"identifier/_EmV5nsYZ2UWHgRmLDMU8i-rJWDx-kv5_1pFrzQI7vMMCM5mAXivO8UZtVfOqMR_": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/qRN6in76LndiiOZJheHkwyW8UT1N5-f-bXvHfDvwrMw2fSkOoZdh8pWE1qhLk65b")},
 			"identifier/___9_QAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/7lfQ4QwSpV8nw7IDh0JiQ_jqUPrPv3_Vfie034RxsSy-cy4vO8DVvxgpx2LW08oO")},
 			"identifier/_wgAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/7lfQ4QwSpV8nw7IDh0JiQ_jqUPrPv3_Vfie034RxsSy-cy4vO8DVvxgpx2LW08oO")},
 			"identifier/_woAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/7lfQ4QwSpV8nw7IDh0JiQ_jqUPrPv3_Vfie034RxsSy-cy4vO8DVvxgpx2LW08oO")},
-			"identifier/VGjpp7NVw3OYLpgOQumfM0KcJgY3suz6torykUczcg4bGT24ySkPn5hy-4dNqqkR": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/qRN6in76LndiiOZJheHkwyW8UT1N5-f-bXvHfDvwrMw2fSkOoZdh8pWE1qhLk65b")},
+			"identifier/k2ilgG5KQ9NXnMoT2oB6NdwOnSPRn_H24oXQc4l6qOYIxIG9XfuEczeyrR8UEv_f": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/qRN6in76LndiiOZJheHkwyW8UT1N5-f-bXvHfDvwrMw2fSkOoZdh8pWE1qhLk65b")},
-			"identifier/gIH5eti07nBAhVti3ZTn8EIGOBCZWWvNpxg5CmCZlDzIC4mBdomPmQLeEpf1IQg9": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/qRN6in76LndiiOZJheHkwyW8UT1N5-f-bXvHfDvwrMw2fSkOoZdh8pWE1qhLk65b")},
+			"identifier/xMDWovje7OfyIaDy_2VnjpKxRqSOQ_LoeD946t-3WsS2V2SeMJ7nDGrNfpa4Pbc-": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/qRN6in76LndiiOZJheHkwyW8UT1N5-f-bXvHfDvwrMw2fSkOoZdh8pWE1qhLk65b")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
-			"substitute/nWPg893oqn_YNN8kgfZrs_LVLwP90e0mKxqU8UwoazQh-yBPwhoviD7of6YALx-M": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/qRN6in76LndiiOZJheHkwyW8UT1N5-f-bXvHfDvwrMw2fSkOoZdh8pWE1qhLk65b")},
+			"substitute/OyBGorh72Z9kVw35JUa8FbqDbpR4DqT-MX1jic0uKN5PdYmUBiAF38BRsIRnBigf": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/qRN6in76LndiiOZJheHkwyW8UT1N5-f-bXvHfDvwrMw2fSkOoZdh8pWE1qhLk65b")},
 
 			"work": {Mode: fs.ModeDir | 0700},
 		}},
@@ -1243,7 +1235,7 @@ func TestCache(t *testing.T) {
 					pkg.ID{0xff, 1},
 					nil,
 					nil, stub.UniqueError(0xbad),
-				), nil, nil, pkg.WNew, stub.UniqueError(0xbad)},
+				), nil, nil, stub.UniqueError(0xbad)},
 
 				{"file output", overrideIdent{pkg.ID{0xff, 2}, &stubArtifact{
 					kind: pkg.KindTar,
@@ -1254,7 +1246,7 @@ func TestCache(t *testing.T) {
 							0400,
 						)
 					},
-				}}, nil, nil, pkg.WNew, errors.New(
+				}}, nil, nil, errors.New(
 					"non-file artifact produced regular file",
 				)},
 			})
@@ -1371,14 +1363,14 @@ func TestCache(t *testing.T) {
 				}}}, base.Append(
 					"identifier",
 					pkg.Encode(pkg.ID{0xff, 0}),
-				), want, pkg.WNew, nil},
+				), want, nil},
 
 				{"reject", overrideChecksum{want.hash(), overrideIdent{pkg.ID{0xfe, 1}, &stubArtifact{
 					kind: pkg.KindTar,
 					cure: func(t *pkg.TContext) error {
 						return makeGarbage(t.GetWorkDir(), stub.UniqueError(0xbad))
 					},
-				}}}, nil, nil, pkg.WNew, stub.UniqueError(0xbad)},
+				}}}, nil, nil, stub.UniqueError(0xbad)},
 
 				{"match", overrideChecksum{want.hash(), overrideIdent{pkg.ID{0xff, 1}, &stubArtifact{
 					kind: pkg.KindTar,
@@ -1388,7 +1380,7 @@ func TestCache(t *testing.T) {
 				}}}, base.Append(
 					"identifier",
 					pkg.Encode(pkg.ID{0xff, 1}),
-				), want, pkg.WNew, nil},
+				), want, nil},
 			})
 		}, expectsFS{
 			".": {Mode: fs.ModeDir | 0700},
@@ -1416,7 +1408,7 @@ func TestCache(t *testing.T) {
 				), base.Append(
 					"identifier",
 					pkg.Encode(pkg.Checksum{0xfe, 0}),
-				), expectsChecksum{0xff, 0}, pkg.WNew, nil},
+				), expectsChecksum{0xff, 0}, nil},
 			})
 
 			for _, p := range [][]string{
@@ -1493,7 +1485,7 @@ func TestCache(t *testing.T) {
 				), expectsFS{
 					".":      {Mode: fs.ModeDir | 0500},
 					"result": {Mode: 0444},
-				}, pkg.WNew, nil},
+				}, nil},
 
 				{"substituted", substituted, base.Append(
 					"identifier",
@@ -1501,7 +1493,7 @@ func TestCache(t *testing.T) {
 				), expectsFS{
 					".":      {Mode: fs.ModeDir | 0500},
 					"result": {Mode: 0444},
-				}, pkg.WSubstitute, nil},
+				}, nil},
 			})
 		}, expectsFS{
 			".": {Mode: fs.ModeDir | 0700},
@@ -1512,18 +1504,18 @@ func TestCache(t *testing.T) {
 			"checksum/wILUy2izpj2sgKJVhGUGIAde1XVuqvp5BpFMIQHanT5Q8R6jK4QPVSrJsjZh-njV":        {Mode: 0400, Data: []byte("destroyed")},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/CLyyxJWn1yUGFs_0KnJ4ZSU2hH4-elvGFRB36x14LrNrKBJPxvORhL9O4Rc7oeYU": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/wILUy2izpj2sgKJVhGUGIAde1XVuqvp5BpFMIQHanT5Q8R6jK4QPVSrJsjZh-njV")},
+			"identifier/0Jmc-vGnNDlXTD3jxy-4DGxHW-2-2LtLZ9SXaJtDIqu4uyHfDwDbghNBQ2aYRpab": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
-			"identifier/arv8a6z4i0x6pUb5Z2T-3iE4ETvyZj-uReHGKsS7uiBgMgKNEOzTGG3LIZb8vp0L": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/wILUy2izpj2sgKJVhGUGIAde1XVuqvp5BpFMIQHanT5Q8R6jK4QPVSrJsjZh-njV")},
+			"identifier/L-A8SK4ZX631eyealbJVH08u5pAVEf2NMk8RmLlxl7BVADkU4hNjWD6pi5H7uL1F": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/wILUy2izpj2sgKJVhGUGIAde1XVuqvp5BpFMIQHanT5Q8R6jK4QPVSrJsjZh-njV")},
-			"identifier/heRgWhNJmhm898V68kw0ta76t4rP1o29tYW_TrdyBWXGfo37K3QWA7Z-JkLXAwcn": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
+			"identifier/VbVV2dFVosCriHnG9t5vwfW4lbHvzOkV2eYwpGpPJZOgNBc0g1wZAhbdKEweLqmW": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
-			"identifier/q-VoVBI3IjcWTqwIokpi3y05CP113CHgHslc-XWnhOvDULwzVc3q9Y5xOCm_YyLZ": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
+			"identifier/aSMwvPAwdsIF9e1spuLyRNEc8aTFA4HRVasoNqGjxdm1laSMs2h2teGsoSzLp_pR": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/wILUy2izpj2sgKJVhGUGIAde1XVuqvp5BpFMIQHanT5Q8R6jK4QPVSrJsjZh-njV")},
 
 			"status": {Mode: fs.ModeDir | 0700},
-			"status/q-VoVBI3IjcWTqwIokpi3y05CP113CHgHslc-XWnhOvDULwzVc3q9Y5xOCm_YyLZ": {Mode: fs.ModeSymlink | 0777, Data: []byte("dP-6_wIDRRouOaOF-nkBy-IaUbLdYHbOUTrptu7j_qfW01mnHSjYJ0oykUmvUd2x")},
+			"status/0Jmc-vGnNDlXTD3jxy-4DGxHW-2-2LtLZ9SXaJtDIqu4uyHfDwDbghNBQ2aYRpab": {Mode: fs.ModeSymlink | 0777, Data: []byte("dzO8FEY9lu4hwRT6BfRZOX-uYGsC_5XH4jEJ7sJyThcmG9J_w1ArOAaUCGfL8wAM")},
-			"status/heRgWhNJmhm898V68kw0ta76t4rP1o29tYW_TrdyBWXGfo37K3QWA7Z-JkLXAwcn": {Mode: 0400, Data: []byte(statusHeader + "destroyed")},
+			"status/VbVV2dFVosCriHnG9t5vwfW4lbHvzOkV2eYwpGpPJZOgNBc0g1wZAhbdKEweLqmW": {Mode: 0400, Data: []byte(statusHeader + "destroyed")},
-			"status/dP-6_wIDRRouOaOF-nkBy-IaUbLdYHbOUTrptu7j_qfW01mnHSjYJ0oykUmvUd2x": {Mode: 0400, Data: []byte(statusHeader + "destroyed")},
+			"status/dzO8FEY9lu4hwRT6BfRZOX-uYGsC_5XH4jEJ7sJyThcmG9J_w1ArOAaUCGfL8wAM": {Mode: 0400, Data: []byte(statusHeader + "destroyed")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
-			"substitute/dP-6_wIDRRouOaOF-nkBy-IaUbLdYHbOUTrptu7j_qfW01mnHSjYJ0oykUmvUd2x": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
+			"substitute/dzO8FEY9lu4hwRT6BfRZOX-uYGsC_5XH4jEJ7sJyThcmG9J_w1ArOAaUCGfL8wAM": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/UjZSrgz7_B7XMd9fHU7jM33UZhWlFgX0rz7JZbCBYR28bCS7jr_CAJdcDhi52ruE")},
 
 			"work": {Mode: fs.ModeDir | 0700},
 		}},
@@ -1594,14 +1586,14 @@ func TestCache(t *testing.T) {
 				{"extern", a, base.Append(
 					"identifier",
 					pkg.Encode(wantIdent.Value()),
-				), wantOutput, pkg.WExternal, nil},
+				), wantOutput, nil},
 
 				{"substitute", _a, base.Append(
 					"identifier",
 					pkg.Encode(_wantIdent.Value()),
-				), _wantOutput, pkg.WExternal, nil},
+				), _wantOutput, nil},
 
-				{"mismatch", kca, nil, nil, pkg.WExternal, &pkg.ChecksumMismatchError{
+				{"mismatch", kca, nil, nil, &pkg.ChecksumMismatchError{
 					Got: wantChecksum,
 				}},
 			})
@@ -1615,163 +1607,17 @@ func TestCache(t *testing.T) {
 			"checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl/result": {Mode: fs.ModeSymlink | 0777, Data: []byte("/proc/nonexistent")},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/k8yyhlBV3JpYzzywAnrRWkfp2TmgIDNC6FqMFwrrR2x0C3unBLveDNKgigOjG9MM": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/4HqRo4uTwRQjfy3d2cujMoDC_pC4iv20h4a7NYlx0UdbVuky18o5iK78TFEfPX2U": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
-			"identifier/Xys8hPpJsKirZmTTuT7SwQ6661TCp_ZRu8iUjPPD7pC5E3ll7xw4zhNlZ2PVcz_-": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl")},
+			"identifier/7AZcJm58ghFyTVf_v2baSntgpsxkP5el7ti9dC77C29n8YTEqQW9jRW92KGNdYnz": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl")},
-			"identifier/8sInO_dhPW9kweit7jVuH_vtMkRxlZT7XE4_yEKPZmpGkgVxkmxz0OpXgbMsH6ET": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"identifier/c4aCI00C-ZVyo_FQDQLl1OYK4U_kjzxwrLdFDiXMHnbMcZXCkXo_nxUWauScZ_4V": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
-			"identifier/ofaXbB5gIza_7W4Rzo5XDe_8FwlCPKWn3TBcmGgFAkkTWMl5GXGmOzX89Jd2Mk2A": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/OLBgp1GsljhM2TJ-sbHjaiH9txEUvgdDTAzHv2P24donTt6_529l-9Ua0vFImLlb")},
+			"identifier/cNoG77frXGRCJa7fUi1INKUEQg7L4qrX5acsSv-wqZdGZT7dQwM93rD3at6kSFFF": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/OLBgp1GsljhM2TJ-sbHjaiH9txEUvgdDTAzHv2P24donTt6_529l-9Ua0vFImLlb")},
-			"identifier/8VL-egZySw-RbnHZtxGWdf5Z2v9S9CihrdFwa54Bc5EYMQcEgWEem7QrdCTWlCb8": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl")},
+			"identifier/gvCqzexZVqXjF8B5lKMcP5onmq3jJ6AKqzOW_WN0Fl2yTr9NKhPt9l_ClD2EOSlS": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl")},
 
 			"status": {Mode: fs.ModeDir | 0700},
-			"status/8VL-egZySw-RbnHZtxGWdf5Z2v9S9CihrdFwa54Bc5EYMQcEgWEem7QrdCTWlCb8": {Mode: 0400, Data: []byte("\x00")},
+			"status/gvCqzexZVqXjF8B5lKMcP5onmq3jJ6AKqzOW_WN0Fl2yTr9NKhPt9l_ClD2EOSlS": {Mode: 0400, Data: []byte("\x00")},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
-			"substitute/socGRnhdsJlJ4Z01ZwHFZdLzFH0rWvoaJrylcUKtvhBdGsE7VoYl-vdUuvfK8B4I": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
+			"substitute/qOYrxy9ztKeOA96Os811_0Ox5sd8FBOxis6psJAnRJL5MLazFMaqmd4g7t7k1OHk": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
-
-			"work": {Mode: fs.ModeDir | 0700},
-		}},
-
-		{"extern shallow", pkg.CExternShallow, nil, func(t *testing.T, base *check.Absolute, c *pkg.Cache) {
-			a := &stubArtifactF{
-				kind:   pkg.KindExec,
-				params: []byte("extern"),
-			}
-			wantIdent := c.Ident(a)
-			wantOutput := expectsFS{
-				".":      {Mode: fs.ModeDir | 0500},
-				"result": {Mode: fs.ModeSymlink | 0777, Data: []byte("/proc/nonexistent")},
-			}
-			var wantChecksum pkg.Checksum
-			if err := pkg.SumFS(
-				&wantChecksum,
-				fstest.MapFS(wantOutput),
-				".",
-			); err != nil {
-				t.Fatal(err)
-			}
-			wantChecksumH := unique.Make(wantChecksum)
-
-			_a := &stubArtifactF{
-				kind:   pkg.KindExec,
-				params: []byte("extern substitute"),
-				deps:   []pkg.Artifact{pkg.NewFile("", nil)},
-			}
-			_wantIdent := c.Ident(_a)
-			_wantOutput := expectsFS{
-				".": {Mode: fs.ModeDir | 0500},
-			}
-			var _wantChecksum pkg.Checksum
-			if err := pkg.SumFS(
-				&_wantChecksum,
-				fstest.MapFS(_wantOutput),
-				".",
-			); err != nil {
-				t.Fatal(err)
-			}
-			_wantChecksumH := unique.Make(_wantChecksum)
-
-			kca := pkg.NewExec(
-				"", "",
-				new(pkg.Checksum), 0, false, false,
-				fhs.AbsRoot, nil, fhs.AbsRoot, nil,
-			)
-			kcIdent := c.Ident(kca)
-
-			fia := &stubArtifactF{
-				kind:   pkg.KindExec,
-				params: []byte("flood input"),
-				deps:   []pkg.Artifact{_a},
-			}
-			fiaIdent := c.Ident(fia)
-
-			flia := &stubArtifactF{
-				kind:   pkg.KindExec,
-				params: []byte("flood input local"),
-				deps:   []pkg.Artifact{_a},
-			}
-			fliaIdent := c.Ident(flia)
-
-			h := &stubArtifactF{
-				kind:   pkg.KindExec,
-				params: []byte("hanging input"),
-			}
-
-			fhia := &stubArtifactF{
-				kind:   pkg.KindExec,
-				params: []byte("flood input local"),
-				deps:   []pkg.Artifact{h},
-			}
-			fhiaIdent := c.Ident(fhia)
-
-			c.SetExternal(stubExtern{
-				artifact: map[unique.Handle[pkg.ID]]pkg.Checksum{
-					wantIdent:  wantChecksum,
-					_wantIdent: _wantChecksum,
-					kcIdent:    wantChecksum,
-					fiaIdent:   wantChecksum,
-					fliaIdent:  wantChecksum,
-					fhiaIdent:  wantChecksum,
-				},
-				checksum: map[unique.Handle[pkg.Checksum]]fstest.MapFS{
-					wantChecksumH:  fstest.MapFS(wantOutput),
-					_wantChecksumH: fstest.MapFS(_wantOutput),
-				},
-				status: map[unique.Handle[pkg.ID]]string{
-					wantIdent: "\x00",
-					kcIdent:   "unreachable",
-				},
-			})
-
-			cureMany(t, c, []cureStep{
-				{"extern", a, base.Append(
-					"identifier",
-					pkg.Encode(wantIdent.Value()),
-				), wantOutput, pkg.WExternal, nil},
-
-				{"flood shallow extern", fia, base.Append(
-					"identifier",
-					pkg.Encode(fiaIdent.Value()),
-				), wantOutput, pkg.WExternal, nil},
-
-				{"substitute", _a, base.Append(
-					"identifier",
-					pkg.Encode(_wantIdent.Value()),
-				), _wantOutput, pkg.WExternal, nil},
-
-				{"flood shallow local", flia, base.Append(
-					"identifier",
-					pkg.Encode(fliaIdent.Value()),
-				), wantOutput, pkg.WExternal, nil},
-
-				{"flood shallow hanging", fhia, nil, nil,
-					pkg.WNew, pkg.HangingInputError(c.Ident(h))},
-
-				{"mismatch", kca, nil, nil, pkg.WExternal, &pkg.ChecksumMismatchError{
-					Got: wantChecksum,
-				}},
-			})
-		}, expectsFS{
-			".": {Mode: fs.ModeDir | 0700},
-
-			"checksum": {Mode: fs.ModeDir | 0700},
-			"checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU":        {Mode: fs.ModeDir | 0500},
-			"checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl":        {Mode: fs.ModeDir | 0500},
-			"checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl/result": {Mode: fs.ModeSymlink | 0777, Data: []byte("/proc/nonexistent")},
-
-			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/3fYJjSiWhklt7TK9MPVLGk5_8AIU8ostTcFPXULJf_qeAVG6pmC-Cqqu4ZhEXRxn": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl")},
-			"identifier/8VL-egZySw-RbnHZtxGWdf5Z2v9S9CihrdFwa54Bc5EYMQcEgWEem7QrdCTWlCb8": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl")},
-			"identifier/8sInO_dhPW9kweit7jVuH_vtMkRxlZT7XE4_yEKPZmpGkgVxkmxz0OpXgbMsH6ET": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
-			"identifier/Xys8hPpJsKirZmTTuT7SwQ6661TCp_ZRu8iUjPPD7pC5E3ll7xw4zhNlZ2PVcz_-": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl")},
-			"identifier/k8yyhlBV3JpYzzywAnrRWkfp2TmgIDNC6FqMFwrrR2x0C3unBLveDNKgigOjG9MM": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
-			"identifier/mXlNz_v77nW7jstn_rJn4RL7dCQlkakM0y-HjO6tkDubtzaj-wCmW1hIr2Gk64_O": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl")},
-
-			"status": {Mode: fs.ModeDir | 0700},
-			"status/8VL-egZySw-RbnHZtxGWdf5Z2v9S9CihrdFwa54Bc5EYMQcEgWEem7QrdCTWlCb8": {Mode: 0400, Data: []byte("\x00")},
-
-			"substitute": {Mode: fs.ModeDir | 0700},
-			"substitute/socGRnhdsJlJ4Z01ZwHFZdLzFH0rWvoaJrylcUKtvhBdGsE7VoYl-vdUuvfK8B4I": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/MGWmEfjut2QE2xPJwTsmUzpff4BN_FEnQ7T0j7gvUCCiugJQNwqt9m151fm9D1yU")},
-			"substitute/MccYezQ4pshkeBV4w_aAEIwvZdKHL3OAgAkR3ouZ43EF94Ur1HBHaN7njPfJAj50": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl")},
-			"substitute/VV5W0_DiA1iylaqbKFThp1ZpV_y1ccVS1XyqDnDaXoHQ-EEyPI4XFrQHcHOF2hWG": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/fHkl_RuHOoc4rso__nV-qreikovd6Yhrq5mpBlkf5hmPGaxDlik2bYOQ4dhUQjtl")},
 
 			"work": {Mode: fs.ModeDir | 0700},
 		}},
@@ -1789,7 +1635,7 @@ func TestErrors(t *testing.T) {
 	}{
 		{"InvalidLookupError", pkg.InvalidLookupError{
 			0xff, 0xf0,
-		}, "attempting to look up non-input artifact __AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"},
+		}, "attempting to look up non-dependency artifact __AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"},
 
 		{"InvalidArtifactError", pkg.InvalidArtifactError{
 			0xff, 0xfd,
@@ -2037,7 +1883,7 @@ func (earlyFailureF) Kind() pkg.Kind       { return pkg.KindExec }
 func (earlyFailureF) Params(*pkg.IContext) {}
 func (earlyFailureF) IsExclusive() bool    { return false }
 
-func (a earlyFailureF) Inputs() []pkg.Artifact {
+func (a earlyFailureF) Dependencies() []pkg.Artifact {
 	deps := make([]pkg.Artifact, a)
 	for i := range deps {
 		deps[i] = a - 1
@@ -2055,7 +1901,7 @@ func (a earlyFailureF) Cure(*pkg.FContext) error {
 func BenchmarkEarlyDCE(b *testing.B) {
 	msg := message.New(log.New(os.Stderr, "dce: ", 0))
 	msg.SwapVerbose(testing.Verbose())
-	c, err := pkg.Open(b.Context(), msg, check.MustAbs(b.TempDir()), nil)
+	c, err := pkg.Open(b.Context(), msg, 0, 0, 0, check.MustAbs(b.TempDir()))
 	if err != nil {
 		b.Fatal(err)
 	}
@@ -2104,8 +1950,7 @@ func TestOpen(t *testing.T) {
 		if _, err := pkg.Open(
 			t.Context(),
 			message.New(nil),
-			check.MustAbs(container.Nonexistent),
+			0, 0, 0, check.MustAbs(container.Nonexistent),
-			nil,
 		); !reflect.DeepEqual(err, wantErr) {
 			t.Errorf("Open: error = %#v, want %#v", err, wantErr)
 		}
@@ -2133,8 +1978,7 @@ func TestOpen(t *testing.T) {
 		if _, err := pkg.Open(
 			t.Context(),
 			message.New(nil),
-			tempDir.Append("cache"),
+			0, 0, 0, tempDir.Append("cache"),
-			nil,
 		); !reflect.DeepEqual(err, wantErr) {
 			t.Errorf("Open: error = %#v, want %#v", err, wantErr)
 		}
@@ -2156,8 +2000,7 @@ func TestOpen(t *testing.T) {
 		if _, err := pkg.Open(
 			t.Context(),
 			message.New(nil),
-			tempDir.Append("cache"),
+			0, 0, 0, tempDir.Append("cache"),
-			nil,
 		); !reflect.DeepEqual(err, wantErr) {
 			t.Errorf("Open: error = %#v, want %#v", err, wantErr)
 		}
@@ -2178,7 +2021,7 @@ func TestOpen(t *testing.T) {
 		if _, err := pkg.Open(
 			t.Context(),
 			message.New(nil),
-			tempDir.Append("cache"), nil,
+			0, 0, 0, tempDir.Append("cache"),
 		); !reflect.DeepEqual(err, wantErr) {
 			t.Errorf("Open: error = %#v, want %#v", err, wantErr)
 		}
@@ -2231,8 +2074,8 @@ func TestExtensionRegister(t *testing.T) {
 		if _, err := pkg.Open(
 			t.Context(),
 			message.New(log.Default()),
+			0, 0, 0,
 			check.MustAbs(container.Nonexistent),
-			nil,
 		); !errors.Is(err, os.ErrNotExist) {
 			t.Fatalf("Open: error = %v", err)
 		}
@@ -2270,7 +2113,7 @@ func TestExtensionRegister(t *testing.T) {
 		pkg.Register(pkg.KindCustomOffset, nil)
 
 		t.Cleanup(func() { opened = false })
-		_, _ = pkg.Open(nil, nil, nil, nil)
+		_, _ = pkg.Open(nil, nil, 0, 0, 0, nil)
 		panic("unreachable")
 	})
 
@@ -2281,7 +2124,11 @@ func TestExtensionRegister(t *testing.T) {
 
 		base := check.MustAbs(t.TempDir())
 		t.Cleanup(func() { opened = false })
-		if c, err := pkg.Open(t.Context(), nil, base, nil); err != nil {
+		if c, err := pkg.Open(
+			t.Context(), nil,
+			0, 0, 0,
+			base,
+		); err != nil {
 			t.Fatal(err)
 		} else {
 			c.Close()
@@ -2309,7 +2156,8 @@ func TestExtensionRegister(t *testing.T) {
 		}
 		if _, err := pkg.Open(
 			t.Context(), nil,
-			base, nil,
+			0, 0, 0,
+			base,
 		); !reflect.DeepEqual(err, wantErr) {
 			t.Fatalf("Open: error = %v, want %v", err, wantErr)
 		}
@@ -2330,8 +2178,8 @@ func TestExtensionRegister(t *testing.T) {
 
 		if _, err := pkg.Open(
 			t.Context(), nil,
+			0, 0, 0,
 			base,
-			nil,
 		); !reflect.DeepEqual(err, pkg.ErrWouldPromote) {
 			t.Fatalf("Open: error = %v", err)
 		}
@@ -2344,7 +2192,8 @@ func TestExtensionRegister(t *testing.T) {
 
 		if c, err := pkg.Open(
 			t.Context(), nil,
-			base, &pkg.CacheAttr{Flags: pkg.CPromoteVariant},
+			pkg.CPromoteVariant, 0, 0,
+			base,
 		); err != nil {
 			t.Fatalf("Open: error = %v", err)
 		} else {
@@ -2369,7 +2218,8 @@ func TestExtensionRegister(t *testing.T) {
 
 		if _, err := pkg.Open(
 			t.Context(), nil,
-			base, nil,
+			0, 0, 0,
+			base,
 		); !reflect.DeepEqual(err, pkg.ErrInvalidExtension) {
 			t.Fatalf("Open: error = %v", err)
 		}
@@ -2386,7 +2236,8 @@ func TestExtensionRegister(t *testing.T) {
 
 		if _, err := pkg.Open(
 			t.Context(), nil,
-			base, nil,
+			0, 0, 0,
+			base,
 		); !reflect.DeepEqual(err, pkg.UnsupportedVariantError("rosa")) {
 			t.Fatalf("Open: error = %v", err)
 		}

internal/pkg/tar.go

@@ -58,8 +58,8 @@ func init() {
 	})
 }
 
-// Inputs returns a slice containing the backing file.
+// Dependencies returns a slice containing the backing file.
-func (a *tarArtifact) Inputs() []Artifact {
+func (a *tarArtifact) Dependencies() []Artifact {
 	return []Artifact{a.f}
 }
 
@@ -172,13 +172,6 @@ func (a *tarArtifact) Cure(t *TContext) (err error) {
 			}
 			break
 
-		case tar.TypeChar:
-			t.GetMessage().Verbosef(
-				"%sskipping character device %d, %d %q%s",
-				t.cache.sgrWarn, header.Devmajor, header.Devminor, header.Name, t.cache.sgrRes,
-			)
-			continue
-
 		case tar.TypeXGlobalHeader:
 			continue // ignore
 

internal/pkg/tar_test.go

@@ -80,8 +80,8 @@ func TestTar(t *testing.T) {
 			"checksum/" + wantEncode + "/work": {Mode: fs.ModeDir | 0500},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/7OZ5ErCxUJyRnaaFvUKhTryjsJAoOBUR2MZpUB1DD57jRa09Xxsh9BUs0dM9z5uH": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantEncode)},
+			"identifier/T68YqeEW5moiwVe4J0wPvjERgyMUd4k_cKKxTcQx6AXqZaQAuuryu-Iv-qxDV6-T": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantEncode)},
-			"identifier/paWdPW_BowV3345c4GP4xxSNgxVs_7F09m9m7OaH5XbyuI3dTGZ-kFPOXFbwgr5O": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantEncode)},
+			"identifier/WbWIIUGl6bqDBsjU-UB69JqOWLjG5waiUJBUBGeeRp3V7FBbwaBe3sG1qm7DlPSk": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantEncode)},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 
@@ -104,8 +104,8 @@ func TestTar(t *testing.T) {
 			"checksum/" + wantExpandEncode + "/libedac.so": {Mode: fs.ModeSymlink | 0777, Data: []byte("/proc/nonexistent/libedac.so")},
 
 			"identifier": {Mode: fs.ModeDir | 0700},
-			"identifier/1g2Tcg7pOJkZFxlKploBm4U0vIyMYbxDkcwwydwsF9BMs-w-knFJS41jnqOt16jT": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantExpandEncode)},
+			"identifier/WbWIIUGl6bqDBsjU-UB69JqOWLjG5waiUJBUBGeeRp3V7FBbwaBe3sG1qm7DlPSk": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantExpandEncode)},
-			"identifier/7OZ5ErCxUJyRnaaFvUKhTryjsJAoOBUR2MZpUB1DD57jRa09Xxsh9BUs0dM9z5uH": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantExpandEncode)},
+			"identifier/e3BECw_x_vDyTvj2P48MJVgwpgALeXQ90Ye2Y8gr6SwIPtMup6SR2LVcCTDRGpVi": {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantExpandEncode)},
 
 			"substitute": {Mode: fs.ModeDir | 0700},
 
@@ -212,24 +212,24 @@ func checkTarHTTP(
 			&client,
 			"file:///testdata",
 			testdataChecksum,
-		), pkg.Gzip)), ignorePathname, want, pkg.WNew, nil},
+		), pkg.Gzip)), ignorePathname, want, nil},
 
 		{"directory", pkg.NewTar(pkg.NewDecompress(
 			&tarDir,
 			pkg.Gzip,
-		)), ignorePathname, want, pkg.WNew, nil},
+		)), ignorePathname, want, nil},
 
 		{"multiple entries", pkg.NewTar(pkg.NewDecompress(
 			&tarDirMulti,
 			pkg.Gzip,
-		)), nil, nil, pkg.WNew, errors.New(
+		)), nil, nil, errors.New(
 			"input directory does not contain a single regular file",
 		)},
 
 		{"bad type", pkg.NewTar(pkg.NewDecompress(
 			&tarDirType,
 			pkg.Gzip,
-		)), nil, nil, pkg.WNew, errors.New(
+		)), nil, nil, errors.New(
 			"input directory does not contain a single regular file",
 		)},
 
@@ -239,6 +239,6 @@ func checkTarHTTP(
 			cure: func(t *pkg.TContext) error {
 				return stub.UniqueError(0xcafe)
 			},
-		}), nil, nil, pkg.WNew, stub.UniqueError(0xcafe)},
+		}), nil, nil, stub.UniqueError(0xcafe)},
 	})
 }

internal/rosa/builtins.go

@@ -18,11 +18,6 @@ const (
 	jobsLE = `"$(expr ` + jobsE + ` '*' 2)"`
 	// jobsLFlagE is expression for flag with double of preferred job count.
 	jobsLFlagE = `"-j$(expr ` + jobsE + ` '*' 2)"`
-
-	// loadE is expression for preferred loadavg target set by [pkg].
-	loadE = `"$` + pkg.EnvLoad + `"`
-	// loadFlagE is expression for flag with preferred loadavg target.
-	loadFlagE = `"-l$` + pkg.EnvLoad + `"`
 )
 
 // newTar wraps [pkg.NewHTTPGetTar] with a simpler function signature.
@@ -107,7 +102,7 @@ func skipGNUTests(tests ...int64) string {
 			buf.WriteString(strconv.Itoa(int(n - 1)))
 			buf.WriteString(" ")
 		}
-		if i == len(tests)-1 || (tests[i+1] != n+1 && tests[i+1] != n+2) {
+		if i == len(tests)-1 || tests[i+1] != n+1 {
 			buf.WriteString(strconv.Itoa(int(n + 1)))
 			buf.WriteString("-")
 		}

internal/rosa/builtins_test.go

@@ -16,7 +16,6 @@ func TestSkipGNUTests(t *testing.T) {
 	}{
 		{[]int64{764}, "1-763 765-"},
 		{[]int64{764, 0xcafe, 37, 9}, "1-8 10-36 38-763 765-51965 51967-"},
-		{[]int64{168, 170, 623, 764}, "1-167 169 171-622 624-763 765-"},
 		{[]int64{1, 2, 0xbed}, "3-3052 3054-"},
 		{[]int64{3, 4}, "1-2 5-"},
 	}

internal/rosa/busybox.go

@@ -0,0 +1,124 @@
+package rosa
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"time"
+
+	"hakurei.app/fhs"
+	"hakurei.app/internal/pkg"
+)
+
+// busyboxBin is a busybox binary distribution installed under bin/busybox.
+type busyboxBin struct {
+	// Underlying busybox binary.
+	bin pkg.FileArtifact
+}
+
+// Kind returns the hardcoded [pkg.Kind] value.
+func (a busyboxBin) Kind() pkg.Kind { return kindBusyboxBin }
+
+// Params is a noop.
+func (a busyboxBin) Params(*pkg.IContext) {}
+
+// IsExclusive returns false: Cure performs a trivial filesystem write.
+func (busyboxBin) IsExclusive() bool { return false }
+
+// Dependencies returns the underlying busybox [pkg.FileArtifact].
+func (a busyboxBin) Dependencies() []pkg.Artifact {
+	return []pkg.Artifact{a.bin}
+}
+
+func init() {
+	pkg.Register(kindBusyboxBin, func(r *pkg.IRReader) pkg.Artifact {
+		a := busyboxBin{r.Next().(pkg.FileArtifact)}
+		if _, ok := r.Finalise(); ok {
+			panic(pkg.ErrUnexpectedChecksum)
+		}
+		return a
+	})
+}
+
+// String returns the reporting name of the underlying file prefixed with expand.
+func (a busyboxBin) String() string {
+	return "expand-" + a.bin.(fmt.Stringer).String()
+}
+
+// Cure installs the underlying busybox [pkg.File] to bin/busybox.
+func (a busyboxBin) Cure(t *pkg.TContext) (err error) {
+	var r io.ReadCloser
+	if r, err = t.Open(a.bin); err != nil {
+		return
+	}
+	defer func() {
+		closeErr := r.Close()
+		if err == nil {
+			err = closeErr
+		}
+	}()
+
+	binDir := t.GetWorkDir().Append("bin")
+	if err = os.MkdirAll(binDir.String(), 0700); err != nil {
+		return
+	}
+
+	var w *os.File
+	if w, err = os.OpenFile(
+		binDir.Append("busybox").String(),
+		os.O_WRONLY|os.O_CREATE|os.O_EXCL,
+		0500,
+	); err != nil {
+		return
+	}
+	defer func() {
+		closeErr := w.Close()
+		if err == nil {
+			err = closeErr
+		}
+	}()
+
+	_, err = io.Copy(w, r)
+	return
+}
+
+// newBusyboxBin returns a [pkg.Artifact] containing a busybox installation from
+// the https://busybox.net/downloads/binaries/ binary release.
+func (s *S) newBusyboxBin() pkg.Artifact {
+	var version, url, checksum string
+	switch s.arch {
+	case "amd64":
+		version = "1.35.0"
+		url = "https://busybox.net/downloads/binaries/" +
+			version + "-" + s.linuxArch() + "-linux-musl/busybox"
+		checksum = "L7OBIsPu9enNHn7FqpBT1kOg_mCLNmetSeNMA3i4Y60Z5jTgnlX3qX3zcQtLx5AB"
+	case "arm64":
+		version = "1.31.0"
+		url = "https://busybox.net/downloads/binaries/" +
+			version + "-defconfig-multiarch-musl/busybox-armv8l"
+		checksum = "npJjBO7iwhjW6Kx2aXeSxf8kXhVgTCDChOZTTsI8ZfFfa3tbsklxRiidZQdrVERg"
+
+	default:
+		panic("unsupported target " + s.arch)
+	}
+
+	return pkg.NewExec(
+		"busybox-bin-"+version, s.arch, nil, pkg.ExecTimeoutMax, false, false,
+		fhs.AbsRoot, []string{
+			"PATH=/system/bin",
+		},
+		AbsSystem.Append("bin", "busybox"),
+		[]string{"hush", "-c", "" +
+			"busybox mkdir -p /work/system/bin/ && " +
+			"busybox cp /system/bin/busybox /work/system/bin/ && " +
+			"busybox --install -s /work/system/bin/"},
+		pkg.Path(AbsSystem, true, busyboxBin{pkg.NewHTTPGet(
+			&http.Client{Transport: &http.Transport{
+				// busybox website is really slow to respond
+				TLSHandshakeTimeout: 2 * time.Minute,
+			}}, url,
+			mustDecode(checksum),
+		)}),
+	)
+}

internal/rosa/cmake.go

@@ -35,7 +35,7 @@ type CMakeHelper struct {
 var _ Helper = new(CMakeHelper)
 
 // extra returns the cmake handle alongside either ninja or make.
-func (attr *CMakeHelper) extra() P {
+func (attr *CMakeHelper) extra(int) P {
 	if attr != nil && attr.Make {
 		return P{_cmake, _make}
 	}
@@ -61,10 +61,10 @@ func (attr *CMakeHelper) script(t Toolchain, name string) string {
 	}
 
 	generate := "Ninja"
-	test := "ninja " + jobsFlagE + " " + loadFlagE + " test"
+	test := "ninja " + jobsFlagE + " test"
 	if attr.Make {
 		generate = "'Unix Makefiles'"
-		test = "make " + jobsFlagE + " " + loadFlagE + " test"
+		test = "make " + jobsFlagE + " test"
 	}
 	if attr.Test != "" {
 		test = attr.Test
@@ -84,7 +84,6 @@ func (attr *CMakeHelper) script(t Toolchain, name string) string {
 
 	return `
 cmake -G ` + generate + ` \
-	-Wno-author -Wno-unused-cli \
 	-DCMAKE_C_COMPILER_TARGET="${ROSA_TRIPLE}" \
 	-DCMAKE_CXX_COMPILER_TARGET="${ROSA_TRIPLE}" \
 	-DCMAKE_ASM_COMPILER_TARGET="${ROSA_TRIPLE}" \
@@ -98,7 +97,7 @@ cmake -G ` + generate + ` \
 	}), " \\\n\t") + ` \
 	-DCMAKE_INSTALL_PREFIX=/system \
 	'/usr/src/` + name + `/` + filepath.Join(attr.Append...) + `'
-cmake --build . --parallel=` + jobsE + ` -- ` + loadFlagE + `
+cmake --build . --parallel=` + jobsE + `
 DESTDIR=/work cmake --install .
 ` + script
 }

internal/rosa/etc.go

@@ -107,8 +107,6 @@ func init() {
 		a := cureEtc{}
 		if r.ReadUint32() == 0 {
 			a.minimal = true
-		} else {
-			r.Next()
 		}
 		if _, ok := r.Finalise(); ok {
 			panic(pkg.ErrUnexpectedChecksum)
@@ -120,8 +118,8 @@ func init() {
 // IsExclusive returns false: Cure performs a few trivial filesystem writes.
 func (cureEtc) IsExclusive() bool { return false }
 
-// Inputs returns a slice containing the backing iana-etc release.
+// Dependencies returns a slice containing the backing iana-etc release.
-func (a cureEtc) Inputs() []pkg.Artifact {
+func (a cureEtc) Dependencies() []pkg.Artifact {
 	if !a.minimal {
 		return []pkg.Artifact{ianaEtc}
 	}

internal/rosa/gentoo.go

@@ -1,104 +0,0 @@
-package rosa
-
-import (
-	"errors"
-	"io/fs"
-	"os"
-	"path/filepath"
-
-	"hakurei.app/internal/pkg"
-)
-
-// gentooOverlay are symlinks on top of a Gentoo LLVM stage3 tarball for
-// compatibility with the Rosa OS stage0 distribution.
-type gentooOverlay struct{ stage3 pkg.Artifact }
-
-// Kind returns the hardcoded [pkg.Kind] value.
-func (a gentooOverlay) Kind() pkg.Kind { return kindGentooOverlay }
-
-// Params is a noop.
-func (a gentooOverlay) Params(*pkg.IContext) {}
-
-// IsExclusive returns false: Cure performs a trivial filesystem write.
-func (gentooOverlay) IsExclusive() bool { return false }
-
-// Inputs returns the underlying Gentoo stage3.
-func (a gentooOverlay) Inputs() []pkg.Artifact {
-	return []pkg.Artifact{a.stage3}
-}
-
-func init() {
-	pkg.Register(kindGentooOverlay, func(r *pkg.IRReader) pkg.Artifact {
-		a := gentooOverlay{r.Next()}
-		if _, ok := r.Finalise(); ok {
-			panic(pkg.ErrUnexpectedChecksum)
-		}
-		return a
-	})
-}
-
-// String returns a hardcoded name.
-func (a gentooOverlay) String() string { return "gentoo-overlay" }
-
-// Revision returns a hardcoded value incremented on layout changes.
-func (a gentooOverlay) Revision() uint64 { return 0 }
-
-// Cure installs the overlay.
-func (a gentooOverlay) Cure(f *pkg.FContext) (err error) {
-	pathname, _ := f.GetArtifact(a.stage3)
-	var stage3 *os.Root
-	if stage3, err = os.OpenRoot(pathname.String()); err != nil {
-		return err
-	}
-	defer func() {
-		closeErr := stage3.Close()
-		if err == nil {
-			err = closeErr
-		}
-	}()
-	fsys := stage3.FS()
-
-	system := f.GetWorkDir().Append("system")
-	bin := system.Append("bin")
-	if err = os.MkdirAll(bin.String(), 0700); err != nil {
-		return
-	}
-
-	linknames := []string{
-		"../../bin/sh",
-	}
-
-	var dents []os.DirEntry
-
-	const llvm = "usr/lib/llvm"
-	dents, err = fs.ReadDir(fsys, llvm)
-	if err != nil {
-		return
-	}
-	if len(dents) != 1 {
-		return errors.New("stage3 /" + llvm + " contains more than one entry")
-	}
-
-	llvmBin := filepath.Join(llvm, dents[0].Name(), "bin")
-	dents, err = fs.ReadDir(fsys, llvmBin)
-	if err != nil {
-		return
-	}
-	for _, dent := range dents {
-		linknames = append(linknames, filepath.Join(
-			"../..",
-			llvmBin,
-			dent.Name(),
-		))
-	}
-
-	for _, linkname := range linknames {
-		if err = os.Symlink(
-			linkname,
-			bin.Append(filepath.Base(linkname)).String(),
-		); err != nil {
-			return
-		}
-	}
-	return
-}

internal/rosa/git.go

@@ -20,26 +20,19 @@ func (t Toolchain) NewViaGit(
 	return t.New(strings.TrimSuffix(
 		path.Base(url),
 		".git",
-	)+"-src", path.Base(rev), nil, &PackageAttr{
+	)+"-src-"+path.Base(rev), THostNet, t.Append(nil,
-		KnownChecksum: &checksum,
+		_nssCACert,
-
+		_git,
-		HostNet: true,
+	), &checksum, nil, `
-		Paths:   []pkg.ExecPath{resolvconf()},
-	}, &GenericHelper{
-		Build: `
 git \
 	-c advice.detachedHead=false \
 	clone \
 	--depth=1 \
-	--revision=` + rev + ` \
+	--revision=`+rev+` \
 	--shallow-submodules \
 	--recurse-submodules \
-	` + url + ` \
+	`+url+` \
 	/work
 rm -rf /work/.git
-`,
+`, resolvconf())
-	},
-		_nssCACert,
-		_git,
-	)
 }

internal/rosa/go.go

@@ -13,7 +13,7 @@ func (t Toolchain) newGo(
 	script string,
 	boot ...pkg.Artifact,
 ) pkg.Artifact {
-	return t.New("go", version, newTar(
+	return t.NewPackage("go", version, newTar(
 		"https://go.dev/dl/go"+version+".src.tar.gz",
 		checksum,
 		pkg.Gzip,
@@ -56,15 +56,16 @@ ln -s \
 
 func init() {
 	const (
-		version  = "1.25.12"
+		version  = "1.26.4"
-		checksum = "XNrGD_boJl2-El_a_T3BuTcMin_WPoU-FGddcNG8dcXA8n2QuxZB7kaUaCWu60QX"
+		checksum = "fpqJlxa41wKRtbnviYNLk9VxgcL-5oIEDxsriF8svU6kNwQW70oRRA9gTz_ImVoB"
 	)
 	meta := Metadata{
-		Name:        "go-bootstrap",
+		Name:        "go",
-		Description: "the Go programming language toolchain (bootstrap)",
+		Description: "the Go programming language toolchain",
 		Website:     "https://go.dev",
 		Version:     version,
-		Exclude:     true,
+
+		ID: 1227,
 	}
 	native.MustRegister(meta.Name, func(t Toolchain) (*Metadata, pkg.Artifact) {
 		var (
@@ -75,7 +76,7 @@ func init() {
 		)
 		switch t.arch {
 		case "amd64":
-			bootstrapEarly = []pkg.Artifact{t.New("go", "1.4-bootstrap", newTar(
+			bootstrapEarly = []pkg.Artifact{t.NewPackage("go", "1.4-bootstrap", newTar(
 				"https://dl.google.com/go/go1.4-bootstrap-20171003.tar.gz",
 				"8o9JL_ToiQKadCTb04nvBDkp8O1xiWOolAxVEqaTGodieNe4lOFEjlOxN3bwwe23",
 				pkg.Gzip,
@@ -151,8 +152,8 @@ sed -i \
 		)
 
 		go125 := t.newGo(
-			version,
+			"1.25.11",
-			checksum,
+			"cnqAQ8wpVZXcM6nHAfSqFkIW4L3H73ALB9rBfKUBbfgg4_pOF3I9zOZARgYQ6MR2",
 			[]string{"CGO_ENABLED=0"}, `
 sed -i \
 	's,/lib/ld-musl-`+t.linuxArch()+`.so.1,/system/bin/linker,' \
@@ -164,6 +165,23 @@ rm \
 `, go123,
 		)
 
-		return &meta, go125
+		return &meta, t.newGo(
+			version,
+			checksum,
+			finalEnv, `
+sed -i \
+	's,/lib/ld-musl-`+t.linuxArch()+`.so.1,/system/bin/linker,' \
+	cmd/link/internal/`+t.arch+`/obj.go
+sed -i \
+	's/cpu.X86.HasAVX512VBMI/& \&\& cpu.X86.HasPOPCNT/' \
+	internal/runtime/gc/scan/scan_amd64.go
+
+rm \
+	os/root_unix_test.go \
+	cmd/cgo/internal/testsanitizers/tsan_test.go \
+	cmd/cgo/internal/testsanitizers/cshared_test.go
+`, go125,
+		)
+
 	})
 }

internal/rosa/llvm.go

@@ -1,9 +1,11 @@
 package rosa
 
 import (
+	"io/fs"
 	"regexp"
 	"slices"
 	"strings"
+	"unsafe"
 
 	"hakurei.app/internal/pkg"
 )
@@ -11,12 +13,12 @@ import (
 var (
 	_llvmSource      = H("llvm-project")
 	_muslHeaders     = H("musl-headers")
+	_earlyCompilerRT = H("early-compiler-rt")
 	_earlyRuntimes   = H("early-runtimes")
 	_musl            = H("musl")
 
 	_bash      = H("bash")
-	_awk         = H("awk")
+	_gawk      = H("gawk")
-	_pythonEarly = H("python-early")
 	_coreutils = H("coreutils")
 	_diffutils = H("diffutils")
 	_findutils = H("findutils")
@@ -48,6 +50,165 @@ func litArgs(verbose bool, skipChecks ...string) string {
 }
 
 func init() {
+	var llvmPatches []KV
+	for _, name := range [...]string{
+		"increase-stack-size-unconditional",
+		"add-rosa-vendor",
+		"xfail-broken-tests",
+		"path-system-include",
+		"path-system-libraries",
+	} {
+		p, err := fs.ReadFile(nativeB, "package/llvm/"+name+".patch")
+		if err != nil {
+			panic(err)
+		}
+		llvmPatches = append(llvmPatches, KV{
+			name,
+			unsafe.String(unsafe.SliceData(p), len(p)),
+		})
+	}
+
+	native.MustRegister("early-compiler-rt", func(t Toolchain) (*Metadata, pkg.Artifact) {
+		meta := Metadata{
+			Name:        "early-compiler-rt",
+			Description: "early LLVM runtime: compiler-rt",
+
+			Dependencies: P{_musl},
+		}
+		_meta, source := t.MustLoad(_llvmSource)
+		meta.Version = _meta.Version
+		major, _, _ := strings.Cut(meta.Version, ".")
+		return &meta, t.NewPackage("early-compiler-rt", meta.Version, source, &PackageAttr{
+			Flag: TExclusive,
+		}, &CMakeHelper{
+			Append: []string{"compiler-rt"},
+
+			Cache: []KV{
+				{"ENABLE_LINKER_BUILD_ID", "ON"},
+
+				// libc++ not yet available
+				{"CMAKE_CXX_COMPILER_TARGET", ""},
+
+				{"LLVM_HOST_TRIPLE", `"${ROSA_TRIPLE}"`},
+				{"LLVM_DEFAULT_TARGET_TRIPLE", `"${ROSA_TRIPLE}"`},
+				{"LLVM_ENABLE_RTTI", "ON"},
+				{"LLVM_BUILD_LLVM_DYLIB", "ON"},
+				{"LLVM_LINK_LLVM_DYLIB", "ON"},
+				{"LLVM_ENABLE_PER_TARGET_RUNTIME_DIR", "ON"},
+
+				{"COMPILER_RT_BUILD_BUILTINS", "ON"},
+				{"COMPILER_RT_DEFAULT_TARGET_ONLY", "ON"},
+				{"COMPILER_RT_USE_BUILTINS_LIBRARY", "ON"},
+				{"COMPILER_RT_SANITIZERS_TO_BUILD", "asan"},
+				{"COMPILER_RT_BUILD_GWP_ASAN", "OFF"},
+
+				// does not work without libunwind
+				{"COMPILER_RT_BUILD_CTX_PROFILE", "OFF"},
+				{"COMPILER_RT_BUILD_LIBFUZZER", "OFF"},
+				{"COMPILER_RT_BUILD_MEMPROF", "OFF"},
+				{"COMPILER_RT_BUILD_PROFILE", "OFF"},
+				{"COMPILER_RT_BUILD_XRAY", "OFF"},
+			},
+			SkipTest: true,
+			Script: `
+mkdir -p "/work/system/lib/clang/` + major + `/lib/"
+ln -s \
+	"../../../${ROSA_TRIPLE}" \
+	"/work/system/lib/clang/` + major + `/lib/"
+
+ln -s \
+	"clang_rt.crtbegin-` + t.linuxArch() + `.o" \
+	"/work/system/lib/${ROSA_TRIPLE}/crtbeginS.o"
+ln -s \
+	"clang_rt.crtend-` + t.linuxArch() + `.o" \
+	"/work/system/lib/${ROSA_TRIPLE}/crtendS.o"
+`,
+		},
+			_python,
+
+			_muslHeaders,
+			_kernelHeaders,
+		)
+	})
+
+	native.MustRegister("early-runtimes", func(t Toolchain) (*Metadata, pkg.Artifact) {
+		meta := Metadata{
+			Name:        "early-runtimes",
+			Description: "early LLVM runtimes: libunwind, libcxx, libcxxabi",
+
+			Dependencies: P{
+				_earlyCompilerRT,
+			},
+		}
+		_meta, source := t.MustLoad(_llvmSource)
+		meta.Version = _meta.Version
+
+		return &meta, t.NewPackage("early-runtimes", meta.Version, source, &PackageAttr{
+			Flag: TExclusive,
+		}, &CMakeHelper{
+			Append: []string{"runtimes"},
+
+			Cache: []KV{
+				{"ENABLE_LINKER_BUILD_ID", "ON"},
+
+				// libc++ not yet available
+				{"CMAKE_CXX_COMPILER_WORKS", "ON"},
+
+				{"LLVM_HOST_TRIPLE", `"${ROSA_TRIPLE}"`},
+				{"LLVM_DEFAULT_TARGET_TRIPLE", `"${ROSA_TRIPLE}"`},
+				{"LLVM_ENABLE_RTTI", "ON"},
+				{"LLVM_BUILD_LLVM_DYLIB", "ON"},
+				{"LLVM_LINK_LLVM_DYLIB", "ON"},
+				{"LLVM_ENABLE_RUNTIMES", "'libunwind;libcxx;libcxxabi'"},
+
+				{"LIBUNWIND_ENABLE_ASSERTIONS", "OFF"},
+				{"LIBUNWIND_USE_COMPILER_RT", "ON"},
+				{"LIBCXX_HAS_MUSL_LIBC", "ON"},
+				{"LIBCXX_USE_COMPILER_RT", "ON"},
+				{"LIBCXX_CXX_ABI", "libcxxabi"},
+				{"LIBCXX_ENABLE_STATIC_ABI_LIBRARY", "OFF"},
+				{"LIBCXX_HARDENING_MODE", "fast"},
+				{"LIBCXX_HAS_ATOMIC_LIB", "OFF"},
+				{"LIBCXXABI_USE_COMPILER_RT", "ON"},
+				{"LIBCXXABI_USE_LLVM_UNWINDER", "ON"},
+				{"LIBCXXABI_ENABLE_STATIC_UNWINDER", "OFF"},
+				{"LIBCXXABI_HAS_CXA_THREAD_ATEXIT_IMPL", "OFF"},
+
+				{"LLVM_ENABLE_ZLIB", "FORCE_ON"},
+				{"LLVM_ENABLE_ZSTD", "FORCE_ON"},
+				{"LLVM_ENABLE_LIBXML2", "OFF"},
+			},
+			SkipTest: true,
+		},
+			_python,
+
+			_zlib,
+			_zstd,
+			_earlyCompilerRT,
+			_kernelHeaders,
+		)
+	})
+
+	const (
+		version  = "22.1.8"
+		checksum = "_QzoDE0W6cv0vfIWeLPDvqG_vKhz6IGWl1nqUUvhlKWiRzf5dMGqeC3tyS2XgI6j"
+	)
+
+	native.MustRegister("llvm-project", func(t Toolchain) (*Metadata, pkg.Artifact) {
+		meta := Metadata{
+			Name:        "llvm-project",
+			Description: "LLVM monorepo with Rosa OS patches",
+			Version:     version,
+
+			ID: 1830,
+		}
+		return &meta, t.NewPatchedSource("llvm-"+version, newFromGitHub(
+			"llvm/llvm-project",
+			"llvmorg-"+version,
+			checksum,
+		), true, llvmPatches...)
+	})
+
 	native.MustRegister("llvm", func(t Toolchain) (*Metadata, pkg.Artifact) {
 		meta := Metadata{
 			Name:        "llvm",
@@ -83,11 +244,9 @@ func init() {
 			{"LIBCXX_ENABLE_STATIC_ABI_LIBRARY", "OFF"},
 			{"LIBCXX_HAS_MUSL_LIBC", "ON"},
 			{"LIBCXX_HARDENING_MODE", "fast"},
-			{"LIBCXX_STATICALLY_LINK_ABI_IN_STATIC_LIBRARY", "ON"},
 			{"LIBCXXABI_USE_LLVM_UNWINDER", "ON"},
-			{"LIBCXXABI_ENABLE_STATIC_UNWINDER", "ON"},
+			{"LIBCXXABI_ENABLE_STATIC_UNWINDER", "OFF"},
 			{"LIBCXXABI_USE_COMPILER_RT", "ON"},
-			{"LIBCXXABI_STATICALLY_LINK_UNWINDER_IN_STATIC_LIBRARY", "ON"},
 			{"LLVM_INSTALL_BINUTILS_SYMLINKS", "ON"},
 			{"LLVM_INSTALL_UTILS", "ON"},
 			{"LLVM_BUILD_LLVM_DYLIB", "ON"},
@@ -140,10 +299,6 @@ func init() {
 				"CodeGen/PowerPC/ppc-tmmintrin.c",
 				"CodeGen/PowerPC/ppc-smmintrin.c",
 				"CodeGenCUDA/amdgpu-alias-undef-symbols.cu",
-				// clang: deadlocks with LIBCXXABI_ENABLE_STATIC_UNWINDER
-				"global-value-regex",
-				"global-hex-value-regex",
-				"check-globals",
 				// cxx: fails on musl
 				"close.dont-get-rid-of-buffer",
 				"re/re.traits",
@@ -184,19 +339,8 @@ func init() {
 			}...)
 		}
 
-		return &meta, t.New("llvm", meta.Version, source, &PackageAttr{
+		return &meta, t.NewPackage("llvm", meta.Version, source, &PackageAttr{
-			Exclusive: true,
+			Flag: TExclusive,
-			Bin: []string{
-				"chmod",
-				"mkdir",
-				"rm",
-				"tr",
-				"awk",
-			},
-
-			ScriptEarly: `
-rm -f /system/bin/clang++.cfg
-`,
 		}, &CMakeHelper{
 			Append: []string{"llvm"},
 
@@ -206,10 +350,6 @@ ln -s ld.lld /work/system/bin/ld
 ln -s clang /work/system/bin/cc
 ln -s clang /work/system/bin/cpp
 ln -s clang++ /work/system/bin/c++
-cat << EOF > /work/system/bin/clang++.cfg
--static-libstdc++
--Wl,--exclude-libs,libunwind.a:libc++.a:libc++experimental.a:libc++abi.a
-EOF
 `,
 
 			// LLVM_LINK_LLVM_DYLIB causes llvm test suite to leak system
@@ -218,13 +358,22 @@ EOF
 			// on 3-stage determinism to test later stages.
 			SkipTest: t.stage.isStage0(),
 
-			Test: "ninja " + jobsFlagE + " " + loadFlagE + " check-all",
+			Test: `
+chmod +w /bin && ln -s \
+	../system/bin/chmod \
+	../system/bin/mkdir \
+	../system/bin/rm \
+	../system/bin/tr \
+	../system/bin/awk \
+	/bin
+ninja ` + jobsFlagE + ` check-all
+`,
 		},
-			_pythonEarly,
+			_python,
 			_perl,
 			_diffutils,
 			_bash,
-			_awk,
+			_gawk,
 			_coreutils,
 			_findutils,
 

internal/rosa/llvm_test.go

@@ -8,7 +8,7 @@ import (
 )
 
 func TestLLVMInputs(t *testing.T) {
-	const wantInputCount = 470
+	const wantInputCount = 553
 
 	_, llvm := rosa.Native().Std().MustLoad(rosa.H("llvm"))
 	var n int

internal/rosa/make.go

@@ -52,16 +52,15 @@ type MakeHelper struct {
 var _ Helper = new(MakeHelper)
 
 // extra returns make and other optional dependencies.
-func (attr *MakeHelper) extra() P {
+func (attr *MakeHelper) extra(flag int) P {
-	if attr == nil || !attr.OmitDefaults {
+	extra := P{_make}
-		return P{
+	if (attr == nil || !attr.OmitDefaults) && flag&TEarly == 0 {
-			_make,
+		extra = append(extra,
-
+			_gawk,
-			_awk,
 			_coreutils,
+		)
 	}
-	}
+	return extra
-	return P{_make}
 }
 
 // wantsChmod returns whether the build system needs to be generated.
@@ -90,7 +89,7 @@ func (attr *MakeHelper) wantsDir() (string, bool) {
 	if attr != nil && attr.InPlace {
 		return helperInPlace, false
 	}
-	return "/cure/", true
+	return `"$(mktemp -d)"`, false
 }
 
 // script generates the cure script.
@@ -161,8 +160,7 @@ func (attr *MakeHelper) script(t Toolchain, name string) string {
 
 	scriptMake := `
 make \
-	` + jobsFlagE + ` \
+	` + jobsFlagE
-	` + loadFlagE
 	if len(attr.Make) > 0 {
 		scriptMake += " \\\n\t" + strings.Join(attr.Make, " \\\n\t")
 	}
@@ -172,8 +170,6 @@ make \
 		(!attr.SkipCheckEarly || !t.stage.isStage0()) {
 		scriptMake += attr.ScriptCheckEarly + `make \
 	` + jobsFlagE + ` \
-	` + loadFlagE + ` \
-	AM_COLOR_TESTS=always \
 	`
 		if len(attr.Check) > 0 {
 			scriptMake += strings.Join(attr.Check, " \\\n\t")

internal/rosa/meson.go

@@ -5,16 +5,10 @@ import (
 	"strings"
 )
 
-var (
+var _meson = H("meson")
-	_muon  = H("muon")
-	_meson = H("meson")
-)
 
 // MesonHelper builds and tests a meson project.
 type MesonHelper struct {
-	// Use muon instead of meson.
-	Muon bool
-
 	// Runs after setup.
 	ScriptCompileEarly string
 	// Runs after compile.
@@ -35,12 +29,7 @@ type MesonHelper struct {
 var _ Helper = new(MesonHelper)
 
 // extra returns hardcoded meson runtime dependencies.
-func (attr *MesonHelper) extra() P {
+func (*MesonHelper) extra(int) P { return P{_meson} }
-	if !attr.isPython() {
-		return P{_muon}
-	}
-	return P{_meson}
-}
 
 // wantsChmod returns false.
 func (*MesonHelper) wantsChmod() bool { return false }
@@ -54,12 +43,6 @@ func (*MesonHelper) scriptEarly() string { return "" }
 // wantsDir requests a new directory in TMPDIR.
 func (*MesonHelper) wantsDir() (string, bool) { return `"$(mktemp -d)"`, false }
 
-// isPython returns whether the legacy python implementation is used.
-func (attr *MesonHelper) isPython() bool {
-	return attr == nil ||
-		!attr.Muon || len(attr.SkipTests) != 0 || attr.InteractiveTest
-}
-
 // script generates the cure script.
 func (attr *MesonHelper) script(t Toolchain, name string) string {
 	if attr == nil {
@@ -71,28 +54,11 @@ func (attr *MesonHelper) script(t Toolchain, name string) string {
 		scriptCompiled = "\n" + scriptCompiled
 	}
 
-	python := attr.isPython()
-	muon := "muon"
-	compile := " samu " + jobsFlagE
-	destdir := "-d"
-	if python {
-		muon = "meson"
-		compile = " compile " + jobsFlagE + " " + loadFlagE
-		destdir = "--destdir"
-	}
-
 	var scriptTest string
 	if !attr.SkipTest && t.opts&OptSkipCheck == 0 {
 		scriptTest = `
-` + muon + ` test \
+meson test \
-	` + jobsFlagE + ` \
-	-t 10`
-		if python {
-			scriptTest += ` \
 	--print-errorlogs`
-		} else {
-			scriptTest += " -Rv"
-		}
 		if attr.InteractiveTest {
 			scriptTest += ` \
 	--interactive`
@@ -103,25 +69,29 @@ func (attr *MesonHelper) script(t Toolchain, name string) string {
 	}
 
 	return `
-` + muon + ` setup \
+cd "$(mktemp -d)"
+meson setup \
 	` + strings.Join(slices.Collect(func(yield func(string) bool) {
 		for _, v := range append([]KV{
-			{"wrap_mode", "nofallback"},
+			{"wrap-mode", "nofallback"},
 			{"prefix", "/system"},
 			{"buildtype", "release"},
 		}, attr.Setup...) {
-			s := v[0]
+			s := "-" + v[0]
+			if len(v[0]) > 0 && v[0][0] != 'D' {
+				s = "-" + s
+			}
 			if v[1] != "" {
-				s = "-D" + s + "=" + v[1]
+				s += "=" + v[1]
 			}
 			if !yield(s) {
 				return
 			}
 		}
 	}), " \\\n\t") + ` \
-	'/usr/src/` + name + `'
+	. '/usr/src/` + name + `'
-` + muon + compile + scriptCompiled + scriptTest + `
+meson compile` + scriptCompiled + scriptTest + `
-` + muon + ` install \
+meson install \
-	` + destdir + ` /work
+	--destdir=/work
 ` + attr.Script
 }

internal/rosa/mirror.go

@@ -14,7 +14,6 @@ import (
 	"path/filepath"
 	"strconv"
 	"strings"
-	"syscall"
 	"unique"
 
 	"hakurei.app/internal/pkg"
@@ -31,8 +30,8 @@ type Remote struct {
 	c *http.Client
 }
 
-// NewRemote returns a populated [Remote].
+// NewRemote returns a populated [Remote]
-func NewRemote(c *http.Client, base string, pub ed25519.PublicKey) (Remote, error) {
+func NewRemote(base string, pub ed25519.PublicKey, c *http.Client) (Remote, error) {
 	u, err := url.Parse(base)
 	return Remote{u, pub, c}, err
 }
@@ -202,261 +201,14 @@ func (r Remote) Status(
 	), nil
 }
 
-// Mirror services requests made by [Remote].
+// NewMirror returns an [http.Handler] for servicing mirror requests.
-type Mirror struct {
-	// Cache on-filesystem format.
-	fsys fs.FS
-	// Signs payloads.
-	key ed25519.PrivateKey
-	// Verbose output.
-	msg message.Msg
-}
-
-// Populate fills an empty root with a static mirror snapshot.
-func (m Mirror) Populate(root *os.Root) error {
-	if dents, err := fs.ReadDir(root.FS(), "."); err != nil {
-		return err
-	} else if len(dents) > 0 {
-		return syscall.ENOTEMPTY
-	}
-
-	for _, name := range []string{
-		dirArtifact,
-		dirOutcome,
-		dirStatus,
-	} {
-		if err := root.Mkdir(name, 0755); err != nil {
-			return err
-		}
-	}
-	var w *os.File
-
-	if dents, err := fs.ReadDir(m.fsys, "identifier"); err != nil {
-		return err
-	} else {
-		for _, dent := range dents {
-			name := dent.Name()
-			var buf [2 * len(pkg.Checksum{})]byte
-			if err = pkg.Decode(
-				(*pkg.Checksum)(buf[:len(pkg.Checksum{})]),
-				name,
-			); err != nil {
-				return err
-			}
-
-			if w, err = root.OpenFile(
-				filepath.Join(dirArtifact, name),
-				syscall.O_WRONLY|syscall.O_CREAT|syscall.O_EXCL,
-				0444,
-			); err != nil {
-				return err
-			}
-			err = m.writeArtifact(&buf, w, nil)
-			if err = errors.Join(err, w.Close()); err != nil {
-				return err
-			}
-		}
-	}
-
-	if dents, err := fs.ReadDir(m.fsys, "checksum"); err != nil {
-		return err
-	} else {
-		for _, dent := range dents {
-			name := dent.Name()
-			var buf pkg.Checksum
-			if err = pkg.Decode(&buf, name); err != nil {
-				return err
-			}
-
-			var fsys fs.FS
-			fsys, err = fs.Sub(m.fsys, filepath.Join("checksum", name))
-			if err != nil {
-				return err
-			}
-
-			if w, err = root.OpenFile(
-				filepath.Join(dirOutcome, name),
-				syscall.O_WRONLY|syscall.O_CREAT|syscall.O_EXCL,
-				0444,
-			); err != nil {
-				return err
-			}
-
-			m.msg.Verbosef("exporting outcome %s", name)
-			err = pkg.Write(fsys, ".", w)
-			if err = errors.Join(err, w.Close()); err != nil {
-				return err
-			}
-		}
-	}
-
-	if dents, err := fs.ReadDir(m.fsys, "status"); err != nil {
-		return err
-	} else {
-		for _, dent := range dents {
-			name := dent.Name()
-			var buf [2 * len(pkg.Checksum{})]byte
-			if err = pkg.Decode(
-				(*pkg.Checksum)(buf[:len(pkg.Checksum{})]),
-				name,
-			); err != nil {
-				return err
-			}
-
-			if w, err = root.OpenFile(
-				filepath.Join(dirStatus, name),
-				syscall.O_WRONLY|syscall.O_CREAT|syscall.O_EXCL,
-				0444,
-			); err != nil {
-				return err
-			}
-			err = m.writeStatus(&buf, w, nil)
-			if err = errors.Join(err, w.Close()); err != nil {
-				return err
-			}
-		}
-	}
-
-	return nil
-}
-
-// NewMirror returns a populated [Mirror] for servicing mirror requests.
 func NewMirror(
 	msg message.Msg,
 	fsys fs.FS,
 	key ed25519.PrivateKey,
-) Mirror {
+) http.Handler {
-	return Mirror{fsys, key, msg}
-}
-
-// writeArtifact writes a signed dirArtifact response.
-func (m Mirror) writeArtifact(
-	buf *[2 * len(pkg.Checksum{})]byte,
-	w io.Writer,
-	header http.Header,
-) error {
-	ids := pkg.Encode((pkg.Checksum)(buf[:len(pkg.Checksum{})]))
-	if linkname, err := fs.ReadLink(m.fsys, filepath.Join(
-		"identifier",
-		ids,
-	)); err != nil {
-		return err
-	} else if err = pkg.Decode(
-		(*pkg.Checksum)(buf[len(pkg.Checksum{}):]),
-		filepath.Base(linkname),
-	); err != nil {
-		return err
-	}
-	m.msg.Verbosef("serving artifact %s", ids)
-
-	if header != nil {
-		header.Set(
-			"Content-Length",
-			strconv.Itoa(ed25519.SignatureSize+len(buf)),
-		)
-	}
-	_, err := w.Write(append(ed25519.Sign(m.key, buf[:]), buf[:]...))
-	return err
-}
-
-// writeOutcome writes a dirOutcome response.
-func (m Mirror) writeOutcome(
-	buf *pkg.Checksum,
-	w io.Writer,
-	header http.Header,
-) error {
-	checksums := pkg.Encode(*buf)
-	rel := filepath.Join("checksum", checksums)
-	if _, err := fs.Lstat(m.fsys, rel); err != nil {
-		return err
-	}
-	m.msg.Verbosef("serving outcome %s", checksums)
-
-	_fsys, err := fs.Sub(m.fsys, rel)
-	if err != nil {
-		return err
-	}
-
-	var gw *gzip.Writer
-	if gw, err = gzip.NewWriterLevel(w, gzip.BestCompression); err != nil {
-		return err
-	}
-	if header != nil {
-		header.Set("Content-Encoding", "gzip")
-	}
-	if err = pkg.Write(_fsys, ".", gw); err != nil {
-		_ = gw.Close()
-		return err
-	}
-	return gw.Close()
-}
-
-// writeStatus writes a signed dirStatus response.
-func (m Mirror) writeStatus(
-	buf *[2 * len(pkg.Checksum{})]byte,
-	w io.Writer,
-	_ http.Header,
-) error {
-	ids := pkg.Encode((pkg.Checksum)(buf[:len(pkg.Checksum{})]))
-	f, err := m.fsys.Open(filepath.Join(
-		"status",
-		ids,
-	))
-	if err != nil {
-		return err
-	}
-	s, ok := f.(io.Seeker)
-	if !ok {
-		return &fs.PathError{Op: "seek", Path: ids, Err: fs.ErrInvalid}
-	}
-	m.msg.Verbosef("serving status %s", ids)
-
-	h := sha512.New384()
-	if _, err = io.Copy(h, f); err != nil {
-		_ = f.Close()
-		return err
-	}
-	h.Sum(buf[len(pkg.Checksum{}):len(pkg.Checksum{})])
-	if _, err = w.Write(append(ed25519.Sign(m.key, buf[:]), buf[:]...)); err != nil {
-		_ = f.Close()
-		return err
-	} else if _, err = s.Seek(0, io.SeekStart); err != nil {
-		_ = f.Close()
-		return err
-	} else if _, err = io.Copy(w, f); err != nil {
-		_ = f.Close()
-		return err
-	}
-	return f.Close()
-}
-
-// writeF is a helper for writing a mirror response with error handling.
-func writeF[B any](
-	m Mirror,
-	w http.ResponseWriter,
-	buf B,
-	f func(
-		buf B,
-		w io.Writer,
-		header http.Header,
-	) error,
-) {
-	err := f(buf, w, w.Header())
-	if err == nil {
-		return
-	}
-
-	if errors.Is(err, os.ErrNotExist) {
-		w.WriteHeader(http.StatusNotFound)
-		return
-	}
-	m.msg.GetLogger().Println(err)
-	w.WriteHeader(http.StatusInternalServerError)
-}
-
-// Register configures an [http.ServeMux] for servicing mirror requests.
-func (m Mirror) Register(mux *http.ServeMux) {
 	const identName = "ident"
+	var mux http.ServeMux
 
 	mux.HandleFunc("/"+dirArtifact+"/{"+identName+"}", func(
 		w http.ResponseWriter,
@@ -470,7 +222,38 @@ func (m Mirror) Register(mux *http.ServeMux) {
 			http.Error(w, err.Error(), http.StatusBadRequest)
 			return
 		}
-		writeF(m, w, &buf, m.writeArtifact)
+
+		ids := pkg.Encode((pkg.Checksum)(buf[:len(pkg.Checksum{})]))
+		if linkname, err := fs.ReadLink(fsys, filepath.Join(
+			"identifier",
+			ids,
+		)); err != nil {
+			if errors.Is(err, os.ErrNotExist) {
+				w.WriteHeader(http.StatusNotFound)
+				return
+			}
+			msg.GetLogger().Println(err)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		} else if err = pkg.Decode(
+			(*pkg.Checksum)(buf[len(pkg.Checksum{}):]),
+			filepath.Base(linkname),
+		); err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		msg.Verbosef("serving artifact %s", ids)
+
+		w.Header().Set(
+			"Content-Length",
+			strconv.Itoa(ed25519.SignatureSize+len(buf)),
+		)
+		if _, err := w.Write(append(
+			ed25519.Sign(key, buf[:]),
+			buf[:]...,
+		)); err != nil {
+			msg.Verbose(err)
+		}
 	})
 
 	mux.HandleFunc("/"+dirOutcome+"/{"+identName+"}", func(
@@ -490,7 +273,40 @@ func (m Mirror) Register(mux *http.ServeMux) {
 			http.Error(w, err.Error(), http.StatusBadRequest)
 			return
 		}
-		writeF(m, w, &buf, m.writeOutcome)
+
+		checksums := pkg.Encode(buf)
+		rel := filepath.Join("checksum", checksums)
+		if _, err := fs.Lstat(fsys, rel); err != nil {
+			if errors.Is(err, os.ErrNotExist) {
+				w.WriteHeader(http.StatusNotFound)
+				return
+			}
+			msg.GetLogger().Println(err)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+		msg.Verbosef("serving outcome %s", pkg.Encode(buf))
+
+		_fsys, err := fs.Sub(fsys, rel)
+		if err != nil {
+			msg.GetLogger().Println(err)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+
+		var gw *gzip.Writer
+		if gw, err = gzip.NewWriterLevel(w, gzip.BestCompression); err != nil {
+			msg.GetLogger().Println(err)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+		w.Header().Set("Content-Encoding", "gzip")
+		if err = pkg.Write(_fsys, ".", gw); err != nil {
+			msg.Verbose(err)
+		}
+		if err = gw.Close(); err != nil {
+			msg.GetLogger().Println(err)
+		}
 	})
 
 	mux.HandleFunc("/"+dirStatus+"/{"+identName+"}", func(
@@ -505,6 +321,47 @@ func (m Mirror) Register(mux *http.ServeMux) {
 			http.Error(w, err.Error(), http.StatusBadRequest)
 			return
 		}
-		writeF(m, w, &buf, m.writeStatus)
+
+		ids := pkg.Encode((pkg.Checksum)(buf[:len(pkg.Checksum{})]))
+		f, err := fsys.Open(filepath.Join(
+			"status",
+			ids,
+		))
+		if err != nil {
+			if errors.Is(err, os.ErrNotExist) {
+				w.WriteHeader(http.StatusNotFound)
+				return
+			}
+			msg.GetLogger().Println(err)
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+		s, ok := f.(io.Seeker)
+		if !ok {
+			msg.GetLogger().Println("backing filesystem does not support seek")
+			w.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+		msg.Verbosef("serving status %s", ids)
+
+		h := sha512.New384()
+		if _, err = io.Copy(h, f); err != nil {
+			_ = f.Close()
+			msg.Verbose(err)
+			w.WriteHeader(http.StatusInternalServerError)
+		}
+		h.Sum(buf[len(pkg.Checksum{}):len(pkg.Checksum{})])
+		if _, err = w.Write(append(ed25519.Sign(key, buf[:]), buf[:]...)); err != nil {
+			msg.Verbose(err)
+			return
+		} else if _, err = s.Seek(0, io.SeekStart); err != nil {
+			msg.GetLogger().Println(err)
+			return
+		} else if _, err = io.Copy(w, f); err != nil {
+			msg.Verbose(err)
+			return
+		}
 	})
+
+	return &mux
 }

internal/rosa/mirror_test.go

@@ -4,7 +4,6 @@ import (
 	"crypto/ed25519"
 	"io/fs"
 	"log"
-	"net/http"
 	"net/http/httptest"
 	"os"
 	"testing"
@@ -31,7 +30,7 @@ func TestMirror(t *testing.T) {
 	msg.SwapVerbose(testing.Verbose())
 
 	var c *pkg.Cache
-	c, err = pkg.Open(t.Context(), msg, base, nil)
+	c, err = pkg.Open(t.Context(), msg, 0, 0, 0, base)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -53,16 +52,14 @@ func TestMirror(t *testing.T) {
 	}
 	wantChecksums := pkg.Encode(wantChecksum)
 
-	var mux http.ServeMux
+	server := httptest.NewServer(rosa.NewMirror(msg, fstest.MapFS{
-	rosa.NewMirror(msg, fstest.MapFS{
 		"identifier/" + ids:         {Mode: fs.ModeSymlink | 0777, Data: []byte("../checksum/" + wantChecksums)},
 		"checksum/" + wantChecksums: {Mode: os.ModeDir | 0500},
-	}, priv).Register(&mux)
+	}, priv))
-	server := httptest.NewServer(&mux)
 	t.Cleanup(server.Close)
 
 	var extern pkg.External
-	extern, err = rosa.NewRemote(server.Client(), "http://example.com:80", pub)
+	extern, err = rosa.NewRemote("http://example.com:80", pub, server.Client())
 	if err != nil {
 		t.Fatal(err)
 	}

internal/rosa/package/acl/package.az

@@ -13,8 +13,10 @@ package attr {
 
 	patches = [ "musl-errno.patch" ];
 
-	bin = [ "perl" ];
+	early = `
-	populateUsrBin = true;
+ln -s ../../system/bin/perl /usr/bin
+`;
+
 	exec = make {};
 
 	inputs = [

internal/rosa/package/awk.az

@@ -1,31 +0,0 @@
-package awk {
-	description = "one true awk";
-	website = "https://github.com/onetrueawk/awk";
-	anitya = 16171;
-
-	version# = "20260426";
-	source = remoteGitHub {
-		suffix = "onetrueawk/awk";
-		tag = version;
-		checksum = "ewAvWLEHajhm7cA7v4DsKVk1c11niCLKIE5Q-8W_sxv1XXsbZlcOuWn1KOBYMxjo";
-	};
-
-	enterSource = true;
-	writable = true;
-	chmod = true;
-
-	exec = make {
-		omitDefaults = true;
-		inPlace = true;
-		skipConfigure = true;
-		make = [ "YACC='yacc -d -b awkgram'" ];
-		preCheck = "install -vD a.out /system/bin/awk\n";
-		install = "install -vD a.out /work/system/bin/awk";
-	};
-
-	inputs = [
-		m4,
-		byacc,
-		diffutils,
-	];
-}

internal/rosa/package/bison.az

@@ -5,19 +5,15 @@ package bison {
 
 	version# = "3.8.2";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/bison/bison-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/bison/bison-"+version+".tar.gz";
 		checksum = "BhRM6K7URj1LNOkIDCFDctSErLS-Xo5d9ba9seg10o6ACrgC1uNhED7CQPgIY29Y";
 		compress = gzip;
 	};
 
-	toyboxEarly = true;
 	exec = make {
-		omitDefaults = true;
 		check = [
 			"TESTSUITEFLAGS=" + jobsFlagE + "' " + skipGNUTests {
 				tests = [
-					// GNU-isms not implemented in toybox
-					168, 170, 623,
 					// clang miscompiles (SIGILL)
 					764,
 				];
@@ -26,5 +22,9 @@ package bison {
 		];
 	};
 
-	inputs = [ m4 ];
+	inputs = [
+		m4,
+		diffutils,
+		sed,
+	];
 }

internal/rosa/package/byacc.az

@@ -1,24 +0,0 @@
-package byacc {
-	description = "Berkeley Yacc";
-	website = "https://invisible-island.net/byacc";
-	anitya = 233;
-
-	version# = "20260126";
-	source = remoteTar {
-		url = "https://invisible-island.net/archives/byacc/"+
-			"byacc-"+version+".tgz";
-		compress = gzip;
-		checksum = "3IXzewZmFUW3hkFKBuweR0hUSftlI2zE0lBZf16I8oK3mFEyj51FzVv1wvA12uoC";
-	};
-
-	// awk dependency loop
-	toyboxEarly = true;
-
-	// test suite assumes writable source
-	writable = true;
-	chmod = true;
-
-	exec = make {
-		omitDefaults = true;
-	};
-}

internal/rosa/package/cairo.az

@@ -13,16 +13,16 @@ package cairo {
 
 	exec = meson {
 		setup = {
-			"dwrite": "enabled";
+			"Ddwrite": "enabled";
-			"fontconfig": "enabled";
+			"Dfontconfig": "enabled";
-			"freetype": "enabled";
+			"Dfreetype": "enabled";
 
-			"png": "enabled";
+			"Dpng": "enabled";
-			"tee": "enabled";
+			"Dtee": "enabled";
-			"xcb": "enabled";
+			"Dxcb": "enabled";
-			"xlib": "disabled";
+			"Dxlib": "disabled";
-			"xlib-xcb": "disabled";
+			"Dxlib-xcb": "disabled";
-			"zlib": "enabled";
+			"Dzlib": "enabled";
 		};
 		// runs the entire test suite in a single meson test
 		interactiveTest = true;
@@ -31,7 +31,7 @@ package cairo {
 	};
 
 	inputs = [
-		awk,
+		gawk,
 
 		zlib,
 		libpng,

internal/rosa/package/cmake/bootstrap-test-no-openssl.patch

@@ -0,0 +1,13 @@
+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
+   )

internal/rosa/package/cmake/package.az

@@ -3,15 +3,18 @@ package cmake {
 	website = "https://cmake.org";
 	anitya = 306;
 
-	version# = "4.4.2";
+	version# = "4.3.4";
 	source = remoteGitHubRelease {
 		suffix = "Kitware/CMake";
 		tag = "v"+version;
 		name = "cmake-"+version+".tar.gz";
-		checksum = "IWlqJqJCZ6f-z-7Ft1U4ycvCX4riuihKale5NKWusiHemBgC3m5gCecrzikXoL7S";
+		checksum = "6A50pqarKDXKOCv7ffKMvWJWmNTVp_ep8KoaWwNdg-RYQRddgKbxayHveTo6jZ_7";
 		compress = gzip;
 	};
-	patches = [ "disable-broken-tests-musl.patch" ];
+	patches = [
+		"bootstrap-test-no-openssl.patch",
+		"disable-broken-tests-musl.patch",
+	];
 
 	// test suite expects writable source tree
 	writable = true;
@@ -29,7 +32,6 @@ package cmake {
 			"--";
 			"-DCMAKE_USE_OPENSSL": "OFF";
 			"-DCMake_TEST_NO_NETWORK": "ON";
-			"-DCMake_TEST_BOOTSTRAP": "OFF";
 		};
 
 		check = [

internal/rosa/package/cryptsetup.az

@@ -1,43 +0,0 @@
-package cryptsetup {
-	description = "open-source disk encryption";
-	website = "https://gitlab.com/cryptsetup/cryptsetup";
-	anitya = 13709;
-
-	version# = "2.8.7";
-	source = remoteGitLab {
-		domain = "gitlab.com";
-		suffix = "cryptsetup/cryptsetup";
-		ref = "v"+version;
-		checksum = "eDi_UaMtwhIzqpsdcA91aVb56zCYDrsDzeMWfWXAnPbuvn2bEgeH5dFs7mouHz8V";
-	};
-
-	bin = [ "bash" ];
-	exec = meson {
-		setup = {
-			"asciidoc": "disabled";
-			"ssh-token": "false";
-			"blkid": "false";
-		};
-	};
-
-	inputs = [
-		bash,
-		gettext,
-		coreutils,
-
-		popt,
-		lvm2,
-		json-c,
-		e2fsprogs,
-		argp-standalone,
-		kernel-headers,
-	];
-
-	runtime = [
-		popt,
-		lvm2,
-		json-c,
-		e2fsprogs,
-		openssl,
-	];
-}

internal/rosa/package/dbus.az

@@ -19,9 +19,9 @@ package dbus {
 
 	exec = meson {
 		setup = {
-			"epoll": "enabled";
+			"Depoll": "enabled";
-			"inotify": "enabled";
+			"Dinotify": "enabled";
-			"x11_autolaunch": "disabled";
+			"Dx11_autolaunch": "disabled";
 		};
 	};
 
@@ -50,7 +50,7 @@ package xdg-dbus-proxy {
 
 	exec = meson {
 		setup = {
-			"man": "disabled";
+			"Dman": "disabled";
 		};
 	};
 

internal/rosa/package/dtc.az

@@ -18,7 +18,7 @@ package dtc {
 
 	exec = meson {
 		setup = {
-			"yaml": "disabled";
+			"Dyaml": "disabled";
 		};
 	};
 

internal/rosa/package/e2fsprogs.az

@@ -1,28 +0,0 @@
-package e2fsprogs {
-	description = "ext2/3/4 filesystem userspace utilities";
-	website = "http://e2fsprogs.sourceforge.net";
-	anitya = 646;
-
-	version# = "1.47.4";
-	source = remoteTar {
-		url = "https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git"+
-			"/snapshot/e2fsprogs-"+version+".tar.gz";
-		compress = gzip;
-		checksum = "gdnAEVjncIciqG-ZhFfYVv4wbBbCHBmPPYwRxltIfOTqdYH5L3ri8wk75YIVlgN0";
-	};
-
-	exec = make {
-		configure = {
-			"enable-elf-shlibs";
-		};
-	};
-
-	inputs = [
-		perl,
-		gzip,
-		bzip2,
-		diffutils,
-
-		kernel-headers,
-	];
-}

internal/rosa/package/fcft.az

@@ -5,9 +5,8 @@ package fcft {
 
 	version# = "3.3.3";
 	source = remoteTar {
-		url = "https://codeberg.org/dnkl/fcft/releases/download/"+version+
+		url = "https://codeberg.org/dnkl/fcft/archive/"+version+".tar.gz";
-			"/fcft-"+version+".tar.gz";
+		checksum = "bMj8OmqtoANRKZWbjHk4WfP09AxJYRbWGqUsm1gRJ_dOFg6gooNbgkDu597PLfz2";
-		checksum = "pryAJA-d1OpY8KXbGFEHum9Wm6ME9XkPx9EM_OQ_ZEpOUpQnqlkzIq-cwS1ziMPk";
 		compress = gzip;
 	};
 

internal/rosa/package/firmware.az

@@ -34,7 +34,7 @@ package firmware {
 		// requires pre-commit
 		skipCheck = true;
 
-		install = "make " + jobsFlagE + " " + loadFlagE + " DESTDIR=/work/system dedup";
+		install = "make " + jobsFlagE + " DESTDIR=/work/system dedup";
 	};
 
 	inputs = [

internal/rosa/package/fontconfig.az

@@ -3,12 +3,12 @@ package fontconfig {
 	website = "https://www.freedesktop.org/wiki/Software/fontconfig";
 	anitya = 827;
 
-	version# = "2.18.3";
+	version# = "2.18.1";
 	source = remoteGitLab {
 		domain = "gitlab.freedesktop.org";
 		suffix = "fontconfig/fontconfig";
 		ref = version;
-		checksum = "ZZzmt8fYh-3jKJ6vHXUDbeAWM2ilRusWxdynLt3Z4E_CQQ8cCwzpuAWACXmr9qHI";
+		checksum = "S3FJfh-PeZ2_YgNrUqL0H2G4Wf_ilj5HpIGV2oURnkK672AQHpWk526bNtRHwyJt";
 	};
 
 	exec = make {

internal/rosa/package/foot.az

@@ -5,9 +5,8 @@ package foot {
 
 	version# = "1.27.0";
 	source = remoteTar {
-		url = "https://codeberg.org/dnkl/foot/releases/download/"+version+
+		url = "https://codeberg.org/dnkl/foot/archive/"+version+".tar.gz";
-			"/foot-"+version+".tar.gz";
+		checksum = "E2XIPRD8t-WBBJUebIwChFT8K_85diwdalssUNwnuZBIynPa7rlXro5WCe9v3UlK";
-		checksum = "22rG3rMuQI8Ae2XTcZgOJ-6AbF7Taex8XpgvD6Fyg1Mn5Va67FfUcK3tRaq61TFg";
 		compress = gzip;
 	};
 

internal/rosa/package/fribidi.az

@@ -12,7 +12,7 @@ package fribidi {
 
 	exec = meson {
 		setup = {
-			"docs": "false";
+			"Ddocs": "false";
 		};
 	};
 }

internal/rosa/package/fuse.az

@@ -14,10 +14,10 @@ package fuse {
 
 	exec = meson {
 		setup = {
-			"default_library": "both";
+			"Ddefault_library": "both";
-			"tests": "true";
+			"Dtests": "true";
-			"useroot": "false";
+			"Duseroot": "false";
-			"initscriptdir": "/system/etc";
+			"Dinitscriptdir": "/system/etc";
 		};
 
 		postCompile = "python3 -m pytest test/";

internal/rosa/package/gawk/broken-tests.patch

@@ -1,35 +0,0 @@
-diff --git a/test/Makefile.am b/test/Makefile.am
-index 88e15ef1f..bfc279fcb 100644
---- a/test/Makefile.am
-+++ b/test/Makefile.am
-@@ -1726,7 +1726,7 @@ LOCALE_CHARSET_TESTS = \
- SHLIB_TESTS = \
- 	apiterm filefuncs fnmatch fork fork2 fts functab4 functab5 \
- 	getfile indirectbuiltin2 inplace1 inplace2 inplace2bcomp inplace3 \
--	inplace3bcomp ordchr ordchr2 readall readdir readdir_retest \
-+	inplace3bcomp ordchr ordchr2 readall readdir_retest \
- 	readdir_test readfile readfile2 revout revtwoway rwarray \
- 	testext time
- 
-diff --git a/test/Makefile.in b/test/Makefile.in
-index 2d4eeaa5a..7930af8d5 100644
---- a/test/Makefile.in
-+++ b/test/Makefile.in
-@@ -1986,7 +1986,7 @@ LOCALE_CHARSET_TESTS = \
- SHLIB_TESTS = \
- 	apiterm filefuncs fnmatch fork fork2 fts functab4 functab5 \
- 	getfile indirectbuiltin2 inplace1 inplace2 inplace2bcomp inplace3 \
--	inplace3bcomp ordchr ordchr2 readall readdir readdir_retest \
-+	inplace3bcomp ordchr ordchr2 readall readdir_retest \
- 	readdir_test readfile readfile2 revout revtwoway rwarray \
- 	testext time
- 
-diff --git a/test/clos1way6.ok b/test/clos1way6.ok
-index 5768617d3..be4d73e79 100644
---- a/test/clos1way6.ok
-+++ b/test/clos1way6.ok
-@@ -1,3 +1,3 @@
- gawk: clos1way6.awk:5: warning: fflush: cannot flush: two-way pipe `cat - 1>&2; sleep 2' has closed write end
--test1
- Bad file descriptor
-+test1

internal/rosa/package/gawk/musl-errno.patch

@@ -1,39 +0,0 @@
-diff --git a/test/testext-mpfr.ok b/test/testext-mpfr.ok
-index 6a5f98147..adf8685e2 100644
---- a/test/testext-mpfr.ok
-+++ b/test/testext-mpfr.ok
-@@ -21,7 +21,7 @@ var_test: sym_update of ARGC failed - correctly
- var_test: sym_update("testvar") succeeded
- var_test() returned 1, test_var = 42
- 
--test_errno() returned 1, ERRNO = No child processes
-+test_errno() returned 1, ERRNO = No child process
- 
- fubar = 9
- rumpus = -5
-diff --git a/test/testext.ok b/test/testext.ok
-index 3e0c1328c..11d150fe3 100644
---- a/test/testext.ok
-+++ b/test/testext.ok
-@@ -21,7 +21,7 @@ var_test: sym_update of ARGC failed - correctly
- var_test: sym_update("testvar") succeeded
- var_test() returned 1, test_var = 42
- 
--test_errno() returned 1, ERRNO = No child processes
-+test_errno() returned 1, ERRNO = No child process
- 
- fubar = 9
- rumpus = -5
-diff --git a/vms/vmstest.com b/vms/vmstest.com
-index a042764b1..c47984e38 100644
---- a/vms/vmstest.com
-+++ b/vms/vmstest.com
-@@ -917,7 +917,7 @@ $	set noOn
- $	AWKLIBPATH_dir
- $	gawk -f _'test'.awk >_'test'.tmp 2>&1
- $	if .not. $status then call exit_code '$status' _'test'.tmp
--$	gawk "{gsub(""no children"",""No child processes"")}1" -
-+$	gawk "{gsub(""no children"",""No child process"")}1" -
- 	    _'test'.tmp >_'test'.tmp1
- $	rm sys$disk:[]_'test'.tmp;*
- $	mv sys$disk:[]_'test'.tmp1 sys$disk:[]_'test'.tmp

internal/rosa/package/gawk/package.az

@@ -1,26 +0,0 @@
-package gawk {
-	description = "an implementation of awk with GNU extensions";
-	website = "https://www.gnu.org/software/gawk";
-	anitya = 868;
-
-	block = "regressions introduced in 5.4.1, "+
-		"does not even pass its own test suite";
-
-	version# = "5.4.0";
-	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/gawk/gawk-"+version+".tar.gz";
-		checksum = "m0RkIolC-PI7EY5q8pcx5Y-0twlIW0Yp3wXXmV-QaHorSdf8BhZ7kW9F8iWomz0C";
-		compress = gzip;
-	};
-	patches = [
-		"musl-errno.patch",
-		"broken-tests.patch",
-	];
-
-	exec = make {};
-
-	inputs = [
-		diffutils,
-		util-linux,
-	];
-}

internal/rosa/package/gcc/package.az

@@ -3,10 +3,10 @@ package binutils {
 	website = "https://www.gnu.org/software/binutils";
 	anitya = 7981;
 
-	version# = "2.47";
+	version# = "2.46.1";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/binutils/binutils-"+version+".tar.bz2";
+		url = "https://ftpmirror.gnu.org/gnu/binutils/binutils-"+version+".tar.bz2";
-		checksum = "VjbMg5KtZ6VSeNc77Z5p8RKg9eZ56g29ViKbbsF3tcFhZu0Yurg0nZt7UwB577LM";
+		checksum = "ihCVohBxX-URAR-YFDdVrL3inLYsEVX8KbbQmcbHaShHgqqmtsvUue1h3LXSjW-d";
 		compress = bzip2;
 	};
 
@@ -20,11 +20,11 @@ package gcc {
 	website = "https://www.gnu.org/software/gcc";
 	anitya = 6502;
 
-	version# = "16.2.0";
+	version# = "16.1.0";
 	source = remoteTar {
 		url = "https://ftp.tsukuba.wide.ad.jp/software/gcc/releases/"+
 			"gcc-"+version+"/gcc-"+version+".tar.gz";
-		checksum = "yWDNSrcKa6yA5ucD4G-a5nCN99yPA8cRlxKgQlaaT-jM4pWYR6e1EvI2qbjUqXWZ";
+		checksum = "4ASoWbxaA2FW7PAB0zzHDPC5XnNhyaAyjtDPpGzceSLeYnEIXsNYZR3PA_Zu5P0K";
 		compress = gzip;
 	};
 	patches = [
@@ -82,7 +82,6 @@ ln -s system/lib /work/
 
 		mpc,
 		zlib,
-		zstd,
 		libucontext,
 	];
 }

internal/rosa/package/git.az

@@ -12,6 +12,8 @@ package git {
 	};
 
 	early = `
+ln -s ../../system/bin/perl /usr/bin/ || true
+
 # test suite assumes apache
 rm -f /system/bin/httpd
 `;
@@ -20,8 +22,6 @@ rm -f /system/bin/httpd
 	enterSource = true;
 	env = [ "NO_RUST=YesPlease" ];
 
-	bin = [ "perl" ];
-	populateUsrBin = true;
 	exec = make {
 		inPlace = true;
 		generate = "make configure";
@@ -60,8 +60,6 @@ disable_test t1451-fsck-buffer
 disable_test t4104-apply-boundary
 disable_test t4200-rerere
 disable_test t5515-fetch-merge-logic
-disable_test t4124-apply-ws-rule
-disable_test t3404-rebase-interactive
 `;
 
 		check = [
@@ -72,7 +70,6 @@ disable_test t3404-rebase-interactive
 
 		install = `make \
 	` + jobsFlagE + ` \
-	` + loadFlagE + ` \
 	DESTDIR=/work \
 	NO_INSTALL_HARDLINKS=1 \
 	install`;

internal/rosa/package/glib/package.az

@@ -3,11 +3,11 @@ package glib {
 	website = "https://developer.gnome.org/glib";
 	anitya = 10024;
 
-	version# = "2.89.3";
+	version# = "2.89.1";
 	source = remoteGit {
 		url = "https://gitlab.gnome.org/GNOME/glib.git";
 		tag = version;
-		checksum = "eM9KrXwhwKiZferwrILKmDeq-IGnSjr0EKqV90EEVl0Ee82QVcyVSf2LDMROHcOF";
+		checksum = "9_6Eew2KIwa1AHopjU7CqC13_nur5FPJMu-iGUd7sD_1gAM1pa_HVUuAtqExJoYU";
 	};
 
 	files = {
@@ -17,7 +17,7 @@ package glib {
 
 	exec = meson {
 		setup = {
-			"default_library": "both";
+			"Ddefault_library": "both";
 		};
 		// fails with ipv6 disabled
 		skipTests = [ "gio" ];

internal/rosa/package/glslang.az

@@ -1,13 +1,13 @@
 package glslang {
 	description = "reference front end for GLSL/ESSL";
 	website = "https://github.com/KhronosGroup/glslang";
-	anitya = 334917;
+	anitya = 205796;
 
-	version# = "1.4.357.0";
+	version# = "16.3.0";
 	source = remoteGitHub {
 		suffix = "KhronosGroup/glslang";
-		tag = "vulkan-sdk-"+version;
+		tag = version;
-		checksum = "7Zq12xtSd5z_aEEeYCnsWR5WvcEGVlTsRaV6MqkmY1a3iNIrRbX_rrg-taI3wMe6";
+		checksum = "xyqDf8k3-D0_BXHGi0uLgMglnJ05Rf3j73QgbDs3sGtKNdBIQhY8JfqX1NcNoJQN";
 	};
 
 	// test suite writes to source

internal/rosa/package/gnu.az

@@ -7,7 +7,7 @@ package m4 {
 
 	version# = "1.4.21";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/m4/m4-"+version+".tar.bz2";
+		url = "https://ftpmirror.gnu.org/gnu/m4/m4-"+version+".tar.bz2";
 		checksum = "pPa6YOo722Jw80l1OsH1tnUaklnPFjFT-bxGw5iAVrZTm1P8FQaWao_NXop46-pm";
 		compress = bzip2;
 	};
@@ -17,10 +17,7 @@ package m4 {
 chmod +w tests/test-c32ispunct.sh && echo '#!/bin/sh' > tests/test-c32ispunct.sh
 `;
 
-	toyboxEarly = true;
+	exec = make {};
-	exec = make {
-		omitDefaults = true;
-	};
 
 	inputs = [
 		diffutils,
@@ -36,7 +33,7 @@ package autoconf {
 
 	version# = "2.73";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/autoconf/autoconf-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/autoconf/autoconf-"+version+".tar.gz";
 		checksum = "yGabDTeOfaCUB0JX-h3REYLYzMzvpDwFmFFzHNR7QilChCUNE4hR6q7nma4viDYg";
 		compress = gzip;
 	};
@@ -71,7 +68,7 @@ package automake {
 
 	version# = "1.18.1";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/automake/automake-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/automake/automake-"+version+".tar.gz";
 		checksum = "FjvLG_GdQP7cThTZJLDMxYpRcKdpAVG-YDs1Fj1yaHlSdh_Kx6nRGN14E0r_BjcG";
 		compress = gzip;
 	};
@@ -105,10 +102,10 @@ package libtool {
 	website = "https://www.gnu.org/software/libtool";
 	anitya = 1741;
 
-	version# = "2.6.2";
+	version# = "2.5.4";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/libtool/libtool-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/libtool/libtool-"+version+".tar.gz";
-		checksum = "roFqdjyoGjpK7CWWLJJrTS56LuOQcIdq6Tgr4yplacSwirFHoaiDe6CojIWYinWe";
+		checksum = "pa6LSrQggh8mSJHQfwGjysAApmZlGJt8wif2cCLzqAAa2jpsTY0jZ-6stS3BWZ2Q";
 		compress = gzip;
 	};
 
@@ -135,7 +132,7 @@ package gzip {
 
 	version# = "1.14";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/gzip/gzip-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/gzip/gzip-"+version+".tar.gz";
 		checksum = "NWhjUavnNfTDFkZJyAUonL9aCOak8GVajWX2OMlzpFnuI0ErpBFyj88mz2xSjz0q";
 		compress = gzip;
 	};
@@ -153,18 +150,11 @@ package sed {
 
 	version# = "4.10";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/sed/sed-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/sed/sed-"+version+".tar.gz";
 		checksum = "TXTRFQJCyflb-bpBRI2S5Y1DpplwvT7-KfXtpqN4AdZgZ5OtI6yStn1-bkhDKx51";
 		compress = gzip;
 	};
 
-	writable = true;
-	early = `
-test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
-
-test_disable '#!/bin/sh' testsuite/read-error-stale-errno.sh
-`;
-
 	exec = make {};
 
 	inputs = [
@@ -181,7 +171,7 @@ package diffutils {
 
 	version# = "3.12";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/diffutils/diffutils-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/diffutils/diffutils-"+version+".tar.gz";
 		checksum = "9J5VAq5oA7eqwzS1Yvw-l3G5o-TccUrNQR3PvyB_lgdryOFAfxtvQfKfhdpquE44";
 		compress = gzip;
 	};
@@ -196,9 +186,7 @@ test_disable '#!/bin/sh' tests/cmp
 `;
 
 	toyboxEarly = true;
-	exec = make {
+	exec = make {};
-		omitDefaults = true;
-	};
 }
 
 package patch {
@@ -208,7 +196,7 @@ package patch {
 
 	version# = "2.8";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/patch/patch-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/patch/patch-"+version+".tar.gz";
 		checksum = "MA0BQc662i8QYBD-DdGgyyfTwaeALZ1K0yusV9rAmNiIsQdX-69YC4t9JEGXZkeR";
 		compress = gzip;
 	};
@@ -221,9 +209,26 @@ test_disable '#!/bin/sh' tests/ed-style
 test_disable '#!/bin/sh' tests/need-filename
 `;
 
+	toyboxEarly = true;
+	exec = make {};
+}
+
+package gawk {
+	description = "an implementation of awk with GNU extensions";
+	website = "https://www.gnu.org/software/gawk";
+	anitya = 868;
+
+	version# = "5.4.0";
+	source = remoteTar {
+		url = "https://ftpmirror.gnu.org/gnu/gawk/gawk-"+version+".tar.gz";
+		checksum = "m0RkIolC-PI7EY5q8pcx5Y-0twlIW0Yp3wXXmV-QaHorSdf8BhZ7kW9F8iWomz0C";
+		compress = gzip;
+	};
+
 	toyboxEarly = true;
 	exec = make {
-		omitDefaults = true;
+		// dependency loop
+		skipCheck = true;
 	};
 }
 
@@ -234,7 +239,7 @@ package grep {
 
 	version# = "3.12";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/grep/grep-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/grep/grep-"+version+".tar.gz";
 		checksum = "qMB4RjaPNRRYsxix6YOrjE8gyAT1zVSTy4nW4wKW9fqa0CHYAuWgPwDTirENzm_1";
 		compress = gzip;
 	};
@@ -259,7 +264,7 @@ package gettext {
 
 	version# = "1.0";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/gettext/gettext-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/gettext/gettext-"+version+".tar.gz";
 		checksum = "3MasKeEdPeFEgWgzsBKk7JqWqql1wEMbgPmzAfs-mluyokoW0N8oQVxPQoOnSdgC";
 		compress = gzip;
 	};
@@ -297,18 +302,14 @@ package findutils {
 	website = "https://www.gnu.org/software/findutils";
 	anitya = 812;
 
-	version# = "4.11.0";
+	version# = "4.10.0";
-	source = remoteTar {
+	source = remoteFile {
-		url = "https://mirrors.kernel.org/gnu/findutils/findutils-"+version+".tar.xz";
+		url = "https://ftpmirror.gnu.org/gnu/findutils/findutils-"+version+".tar.xz";
-		compress = xz;
+		checksum = "ZXABdNBQXL7QjTygynRRTdXYWxQKZ0Wn5eMd3NUnxR0xaS0u0VfcKoTlbo50zxv6";
-		checksum = "X-qsv9aUoBL583q-4iZcBI3_7Ufd3fSIqFmNLXWdEpUihlRfMpGGyAUt8SAvDKae";
 	};
 
-	writable = true;
-	chmod = true;
 	early = `
 echo '#!/bin/sh' > gnulib-tests/test-c32ispunct.sh
-echo 'int main(){return 0;}' > gnulib-tests/test-fstatat.c
 echo 'int main(){return 0;}' > tests/xargs/test-sigusr.c
 `;
 
@@ -316,6 +317,7 @@ echo 'int main(){return 0;}' > tests/xargs/test-sigusr.c
 
 	inputs = [
 		diffutils,
+		xz,
 		sed,
 	];
 }
@@ -327,14 +329,13 @@ package bash {
 
 	version# = "5.3";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/bash/bash-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/bash/bash-"+version+".tar.gz";
 		checksum = "4LQ_GRoB_ko-Ih8QPf_xRKA02xAm_TOxQgcJLmFDT6udUPxTAWrsj-ZNeuTusyDq";
 		compress = gzip;
 	};
 
 	toyboxEarly = true;
 	exec = make {
-		omitDefaults = true;
 		configure = {
 			"without-bash-malloc";
 		};
@@ -349,7 +350,7 @@ package coreutils {
 
 	version# = "9.11";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/coreutils/coreutils-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/coreutils/coreutils-"+version+".tar.gz";
 		checksum = "t8UMed5wpFEoC56aa42_yidfOAaRGzOfj7MRtQkkqgGbpXiskNA8bd-EmVSQkZie";
 		compress = gzip;
 	};
@@ -362,16 +363,12 @@ test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
 test_disable '#!/bin/sh' gnulib-tests/test-c32ispunct.sh
 test_disable '#!/bin/sh' tests/ls/hyperlink.sh
 test_disable '#!/bin/sh' tests/misc/user.sh
-test_disable '#!/bin/sh' tests/split/line-bytes.sh
-test_disable '#!/bin/sh' tests/ls/stat-vs-dirent.sh
-test_disable '#!/bin/sh' tests/dd/sparse.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
 `;
 
 	exec = make {
-		omitDefaults = true;
 		configure = {
 			"enable-single-binary": "symlinks";
 		};
@@ -392,7 +389,7 @@ package tar {
 
 	version# = "1.35";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/tar/tar-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/tar/tar-"+version+".tar.gz";
 		checksum = "zSaoSlVUDW0dSfm4sbL4FrXLFR8U40Fh3zY5DWhR5NCIJ6GjU6Kc4VZo2-ZqpBRA";
 		compress = gzip;
 	};
@@ -429,7 +426,7 @@ package texinfo {
 
 	version# = "7.3";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/texinfo/texinfo-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/texinfo/texinfo-"+version+".tar.gz";
 		checksum = "RRmC8Xwdof7JuZJeWGAQ_GeASIHAuJFQMbNONXBz5InooKIQGmqmWRjGNGEr5n4-";
 		compress = gzip;
 	};
@@ -443,7 +440,7 @@ package texinfo {
 
 	runtime = [
 		perl,
-		awk,
+		gawk,
 	];
 }
 
@@ -454,7 +451,7 @@ package gperf {
 
 	version# = "3.3";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/gperf/gperf-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gperf/gperf-"+version+".tar.gz";
 		checksum = "RtIy9pPb_Bb8-31J2Nw-rRGso2JlS-lDlVhuNYhqR7Nt4xM_nObznxAlBMnarJv7";
 		compress = gzip;
 	};
@@ -471,7 +468,7 @@ package bc {
 
 	version# = "1.08.2";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/bc/bc-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/bc/bc-"+version+".tar.gz";
 		checksum = "8h6f3hjV80XiFs6v9HOPF2KEyg1kuOgn5eeFdVspV05ODBVQss-ey5glc8AmneLy";
 		compress = gzip;
 	};
@@ -494,7 +491,7 @@ package libiconv {
 
 	version# = "1.19";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/libiconv/libiconv-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/libiconv/libiconv-"+version+".tar.gz";
 		checksum = "UibB6E23y4MksNqYmCCrA3zTFO6vJugD1DEDqqWYFZNuBsUWMVMcncb_5pPAr88x";
 		compress = gzip;
 	};
@@ -507,14 +504,17 @@ package parallel {
 	website = "https://www.gnu.org/software/parallel";
 	anitya = 5448;
 
-	version# = "20260722";
+	version# = "20260622";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/parallel/parallel-"+version+".tar.bz2";
+		url = "https://ftpmirror.gnu.org/gnu/parallel/parallel-"+version+".tar.bz2";
-		checksum = "liG9pBSRqUPqDuRXmnJPoVh-G53lDKkkO8GGabSxQnSho4b9BD0EaJDdScgVhnwj";
+		checksum = "pEkZ_J18AvKCMoPfxEprC0Smw7zP6qXASmC1uFf_HVD_jc95H06LvzGi40-mtCUo";
 		compress = bzip2;
 	};
 
-	bin = [ "bash" ];
+	early = `
+ln -s ../system/bin/bash /bin/
+`;
+
 	exec = make {};
 
 	inputs = [
@@ -532,7 +532,7 @@ package libunistring {
 
 	version# = "1.4.2";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/libunistring/libunistring-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/libunistring/libunistring-"+version+".tar.gz";
 		checksum = "iW9BbfLoVlXjWoLTZ4AekQSu4cFBnLcZ4W8OHWbv0AhJNgD3j65_zqaLMzFKylg2";
 		compress = gzip;
 	};
@@ -559,7 +559,7 @@ package libtasn1 {
 
 	version# = "4.21.0";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/libtasn1/libtasn1-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/libtasn1/libtasn1-"+version+".tar.gz";
 		checksum = "9DYI3UYbfYLy8JsKUcY6f0irskbfL0fHZA91Q-JEOA3kiUwpodyjemRsYRjUpjuq";
 		compress = gzip;
 	};
@@ -574,7 +574,7 @@ package readline {
 
 	version# = "8.3";
 	source = remoteTar {
-		url = "https://mirrors.kernel.org/gnu/readline/readline-"+version+".tar.gz";
+		url = "https://ftpmirror.gnu.org/gnu/readline/readline-"+version+".tar.gz";
 		checksum = "r-lcGRJq_MvvBpOq47Z2Y1OI2iqrmtcqhTLVXR0xWo37ZpC2uT_md7gKq5o_qTMV";
 		compress = gzip;
 	};

internal/rosa/package/gnutls/package.az

@@ -34,8 +34,7 @@ echo 'int main(){return 0;}' > tests/mini-dtls-fragments.c
 			"with-zstd": "link";
 
 			"": arch {
-				// miscompilation on arm64
+				arm64 = "disable-hardware-acceleration";
-				arm64 = "--disable-hardware-acceleration";
 			};
 		};
 	};

internal/rosa/package/go/746640.patch

@@ -1,29 +0,0 @@
-From 45929774c3d5c084cc478afba63c77cf67a68bd7 Mon Sep 17 00:00:00 2001
-From: khr@golang.org <khr@golang.org>
-Date: Wed, 18 Feb 2026 09:09:57 -0800
-Subject: [PATCH] internal/runtime/gc/scan: require popcnt for x86
-
-The GOAMD64=v1 test disables popcnt instructions, which is a feature
-this package's amd64 assembly uses.
-
-Fixes #77674
-
-Change-Id: I7be9bb665838f5da50275f96ef3df398412bb44a
-Reviewed-on: https://go-review.googlesource.com/c/go/+/746640
-LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
-Reviewed-by: Michael Knyszek <mknyszek@google.com>
-Reviewed-by: Keith Randall <khr@google.com>
-Auto-Submit: Keith Randall <khr@golang.org>
----
-
-diff --git a/src/internal/runtime/gc/scan/scan_amd64.go b/src/internal/runtime/gc/scan/scan_amd64.go
-index c03021c7d4..544b237770 100644
---- a/src/internal/runtime/gc/scan/scan_amd64.go
-+++ b/src/internal/runtime/gc/scan/scan_amd64.go
-@@ -39,4 +39,5 @@ var avx512ScanPackedReqsMet = cpu.X86.HasAVX512VL &&
- 	cpu.X86.HasGFNI &&
- 	cpu.X86.HasAVX512BITALG &&
- 	cpu.X86.HasAVX512DQ && // for kmovb, see #79871
--	cpu.X86.HasAVX512VBMI
-+	cpu.X86.HasAVX512VBMI &&
-+	cpu.X86.HasPOPCNT

internal/rosa/package/go/799064.patch

@@ -1,135 +0,0 @@
-From 06f90ebfa6f3e0a744584513e2786988b26569da Mon Sep 17 00:00:00 2001
-From: Damien Neil <dneil@google.com>
-Date: Wed, 08 Jul 2026 11:11:48 -0700
-Subject: [PATCH] os: properly handle trailing / in Root.MkdirAll
-
-MkdirAll("dir/") should create "dir", not return an error.
-
-Fixes #80308
-
-Change-Id: I75458c30b6cb94be3a3d368f6024caef6a6a6964
----
-
-diff --git a/src/os/root_noopenat.go b/src/os/root_noopenat.go
-index 228b580..a84e952 100644
---- a/src/os/root_noopenat.go
-+++ b/src/os/root_noopenat.go
-@@ -158,6 +158,9 @@
- 	if err := checkPathEscapes(r, name); err == errPathEscapes {
- 		return &PathError{Op: "mkdirat", Path: name, Err: err}
- 	}
-+	if name == "" {
-+		return &PathError{Op: "mkdirat", Path: name, Err: syscall.ENOENT}
-+	}
- 	prefix := r.root.name + string(PathSeparator)
- 	if err := MkdirAll(prefix+name, perm); err != nil {
- 		if pe, ok := err.(*PathError); ok {
-diff --git a/src/os/root_openat.go b/src/os/root_openat.go
-index d7c9334..92865e4 100644
---- a/src/os/root_openat.go
-+++ b/src/os/root_openat.go
-@@ -167,6 +167,12 @@
- 					fi, e := r.Stat(fullname)
- 					if e == nil && fi.Mode().IsDir() {
- 						err = nil
-+					} else if e == nil {
-+						err = syscall.ENOTDIR
-+					} else if !IsNotExist(e) {
-+						// EPERM, ELOOP, etc.,
-+						// probably more useful than EEXIST.
-+						err = e
- 					}
- 				}
- 			}
-@@ -177,7 +183,12 @@
- 		}
- 		return struct{}{}, &PathError{Op: "mkdirat", Err: err}
- 	}
--	_, err := doInRoot(r, fullname, 0, openDirFunc, openLastComponentFunc)
-+	flags := uint(doInRootCreatingDirectory)
-+	switch runtime.GOOS {
-+	case "linux", "windows":
-+		flags = doInRootNoHandleTerminalSlash // see rootMkdir
-+	}
-+	_, err := doInRoot(r, fullname, flags, openDirFunc, openLastComponentFunc)
- 	if err != nil {
- 		if _, ok := err.(*PathError); !ok {
- 			err = &PathError{Op: "mkdirat", Path: fullname, Err: err}
-diff --git a/src/os/root_test.go b/src/os/root_test.go
-index 5e0acf9..33a2f33 100644
---- a/src/os/root_test.go
-+++ b/src/os/root_test.go
-@@ -585,6 +585,11 @@
- 
- func TestRootMkdirAll(t *testing.T) {
- 	for _, test := range rootTestCases {
-+		if test.name == "directory does not exist" {
-+			// Test expects error, mkdirall creates the missing directory.
-+			// TestRootMultiMkdirAll covers this case better anyway, just skip.
-+			continue
-+		}
- 		test.run(t, func(t *testing.T, target string, root *os.Root) {
- 			wantError := test.wantError
- 			if test.ltarget != "" {
-@@ -593,7 +598,7 @@
- 				wantError = true
- 			}
- 
--			err := root.Mkdir(test.open, 0o777)
-+			err := root.MkdirAll(test.open, 0o777)
- 			if errEndsTest(t, err, wantError, "root.MkdirAll(%q)", test.open) {
- 				return
- 			}
-@@ -3133,6 +3138,52 @@
- 	})
- }
- 
-+func TestRootMultiMkdirAllShallow(t *testing.T) {
-+	runRootMultiTest(t, func(t *testing.T, test *rootMultiTest) (string, error) {
-+		return testRootMultiMkdirAll(t, test, test.targetPath)
-+	})
-+}
-+
-+func TestRootMultiMkdirAllDeep(t *testing.T) {
-+	runRootMultiTest(t, func(t *testing.T, test *rootMultiTest) (string, error) {
-+		targetPath := test.targetPath
-+		if len(targetPath) > 0 && os.IsPathSeparator(targetPath[len(targetPath)-1]) {
-+			targetPath += "a/b/"
-+		} else {
-+			targetPath += "/a/b"
-+		}
-+		return testRootMultiMkdirAll(t, test, targetPath)
-+	})
-+}
-+
-+func testRootMultiMkdirAll(t *testing.T, test *rootMultiTest, targetPath string) (string, error) {
-+	var mkdirAll = os.MkdirAll
-+	if test.root != nil {
-+		mkdirAll = test.root.MkdirAll
-+	}
-+
-+	test.setOp("MkdirAll(%q, 0o777)", targetPath)
-+	gotErr := mkdirAll(targetPath, 0o777)
-+
-+	switch {
-+	case test.root != nil && test.target.lescapes():
-+		// "mkdir ../target", or equivalent escaping path.
-+		test.wantError(t, gotErr, os.ErrPathEscapes)
-+	case test.root != nil && test.target.escapes():
-+		// "mkdir ../target", or equivalent escaping path.
-+		test.wantError(t, gotErr, errAny)
-+		return "", errSkipRootConsistencyCheck
-+	case test.root != nil && test.target.kind == testFileSymlink && test.target.target.kind == testFileAbsent && targetPath != test.targetPath:
-+		// A minor inconsistency between Root.MkdirAll and os.MkdirAll:
-+		// When an intermediate component of the tree being constructed is a
-+		// dangling symlink, Root.MkdirAll will follow the symlink and create
-+		// its target directory, while os.MkdirAll will fail with an error.
-+		return "", errSkipRootConsistencyCheck
-+	default:
-+	}
-+	return "", gotErr
-+}
-+
- func TestRootMultiRename(t *testing.T) {
- 	if runtime.GOOS == "wasip1" {
- 		switch os.Getenv("GOWASIRUNTIME") {

internal/rosa/package/go/package.az

@@ -1,64 +0,0 @@
-package go {
-	description = "the Go programming language toolchain";
-	website = "https://go.dev";
-	anitya = 1227;
-
-	version# = "1.26.5";
-	source = remoteTar {
-		url = "https://go.dev/dl/go"+version+".src.tar.gz";
-		checksum = "13yt1u_NGOd62LO-WZ8W6CUXodOrEF5CdkiTTiH9E635IHn1luvlXYjsHpBXNFSw";
-		compress = gzip;
-	};
-
-	patches = [
-		// https://go.dev/issue/77674
-		"746640.patch",
-		// https://go.dev/issue/80308
-		"799064.patch",
-	];
-
-	env = [
-		"CC=cc",
-		"GOCACHE=/tmp/gocache",
-		"GOROOT_BOOTSTRAP=/system/go",
-		"TMPDIR=/dev/shm/go",
-	];
-
-	enterSource = true;
-
-	exec = generic {
-		inPlace = true;
-		build = `
-mkdir /work/system/ "${TMPDIR}"
-cp -r . /work/system/go
-cd /work/system/go/src/
-chmod -R +w ..
-
-sed -i \
-	's,/lib/ld-musl-`+linuxArch+`.so.1,/system/bin/linker,' \
-	cmd/link/internal/`+arch+`/obj.go
-
-rm \
-	os/root_unix_test.go \
-	runtime/crash_cgo_test.go \
-	cmd/cgo/internal/testsanitizers/tsan_test.go \
-	cmd/cgo/internal/testsanitizers/cshared_test.go
-
-set +u
-. ./make.bash "$@" --no-banner
-set -u
-`;
-		check = "bash run.bash --no-rebuild\n";
-		install = `
-../bin/go tool dist banner # print build info
-
-mkdir /work/system/bin
-ln -s \
-	../go/bin/go \
-	../go/bin/gofmt \
-	/work/system/bin
-`;
-	};
-
-	inputs = [ bash, go-bootstrap ];
-}

internal/rosa/package/harfbuzz.az

@@ -3,19 +3,19 @@ package harfbuzz {
 	website = "https://harfbuzz.github.io";
 	anitya = 1299;
 
-	version# = "14.3.0";
+	version# = "14.2.1";
 	source = remoteGitHub {
 		suffix = "harfbuzz/harfbuzz";
 		tag = version;
-		checksum = "C03eSJbyFvrOPXWhlHgwxfqUKyR9xQO_FKzbwQzT7hW9DTUAQIiwvUIf_6cqaKPm";
+		checksum = "gWl1fS1nXSH9Z9GpJSrh6w7Iv6AOjZbDL_4JZAZTiTYSyLCfxIFuCRLjYmqT2nbt";
 	};
 
 	exec = meson {
 		setup = {
-			"cairo": "enabled";
+			"Dcairo": "enabled";
-			"png": "enabled";
+			"Dpng": "enabled";
-			"zlib": "enabled";
+			"Dzlib": "enabled";
-			"freetype": "enabled";
+			"Dfreetype": "enabled";
 		};
 	};
 

internal/rosa/package/hwdata.az

@@ -3,11 +3,11 @@ package hwdata {
 	website = "https://github.com/vcrhonek/hwdata";
 	anitya = 5387;
 
-	version# = "0.410";
+	version# = "0.408";
 	source = remoteGitHub {
 		suffix = "vcrhonek/hwdata";
 		tag = "v"+version;
-		checksum = "w1fbTz8NR7C6SYOupqTyNZGJHa_cDRAsGs4guZ3LddqlmawgEP_CWFw9-OYFKJ1q";
+		checksum = "1Rm52ovBb8sZRlA578EKgKSIea9QGgDVSBDETU872BisZTVosQy-OTKkWpzU_ddB";
 	};
 
 	writable = true;

internal/rosa/package/ipmitool.az

@@ -1,40 +0,0 @@
-package iana-enterprise-numbers {
-	description = "IANA Enterprise Numbers";
-	website = "https://www.iana.org/assignments/enterprise-numbers.txt";
-	exclude = true;
-
-	version# = "20250113140800";
-	output = remoteFile {
-		url = "https://web.archive.org/web/"+version+"id_/"+
-			"https://www.iana.org/assignments/enterprise-numbers.txt";
-		checksum = "IplVyf7P4PDhhDovWCzL6jPGmF0T75InOCv2IOTMoR7khHUcRfki1pY93kobuXHF";
-	};
-}
-
-package ipmitool {
-	description = "an open-source tool for controlling IPMI-enabled systems";
-	website = "https://codeberg.org/IPMITool/ipmitool";
-	anitya = 1390;
-
-	version# = "1_8_19";
-	source = remoteTar {
-		url = "https://codeberg.org/IPMITool/ipmitool/archive/"+
-			"IPMITOOL_"+version+".tar.gz";
-		checksum = "oxY5S_C2Dl4NhVWtE0BMJtAAxCUgjAwvZm7gzqEzDf0Ina6auYNKztVdM3tclfgT";
-		compress = gzip;
-	};
-	extra = [ iana-enterprise-numbers ];
-
-	early = "cp ../extra/iana-enterprise-numbers enterprise-numbers\n";
-	exec = make {
-		generate = "./bootstrap";
-	};
-
-	inputs = [
-		automake,
-		libtool,
-
-		readline,
-	];
-	runtime = [ readline ];
-}

internal/rosa/package/iproute2.az

@@ -28,7 +28,7 @@ package iproute2 {
 			"prefix": "/system";
 			"color": "auto";
 		};
-		make = [ "CC=cc", "YACC=yacc" ];
+		make = [ "CC=cc" ];
 		// wants root
 		skipCheck = true;
 	};
@@ -36,7 +36,7 @@ package iproute2 {
 	inputs = [
 		pkg-config,
 		m4,
-		byacc,
+		bison,
 		flex,
 
 		libbpf,

internal/rosa/package/kernel/kernel_amd64.config

@@ -1,6 +1,6 @@
 #
 # Automatically generated file; DO NOT EDIT.
-# Linux/x86 6.18.43 Kernel Configuration
+# Linux/x86 6.18.37 Kernel Configuration
 #
 CONFIG_CC_VERSION_TEXT="clang version 22.1.8"
 CONFIG_GCC_VERSION=0
@@ -424,12 +424,12 @@ CONFIG_X86_DEBUGCTLMSR=y
 CONFIG_IA32_FEAT_CTL=y
 CONFIG_X86_VMX_FEATURE_NAMES=y
 # CONFIG_PROCESSOR_SELECT is not set
+CONFIG_BROADCAST_TLB_FLUSH=y
 CONFIG_CPU_SUP_INTEL=y
 CONFIG_CPU_SUP_AMD=y
 CONFIG_CPU_SUP_HYGON=y
 CONFIG_CPU_SUP_CENTAUR=y
 CONFIG_CPU_SUP_ZHAOXIN=y
-CONFIG_BROADCAST_TLB_FLUSH=y
 CONFIG_HPET_TIMER=y
 CONFIG_HPET_EMULATE_RTC=y
 CONFIG_DMI=y
@@ -7311,7 +7311,6 @@ CONFIG_AGP_INTEL=m
 CONFIG_AGP_SIS=m
 CONFIG_AGP_VIA=m
 CONFIG_INTEL_GTT=m
-CONFIG_GPU_BUDDY=y
 CONFIG_DRM=m
 
 #