internal/rosa: create metadata alongside artifact

This enables deferring evaluation of azalea-based packages and fixes the longstanding quirk of version being disjoint from other metadata.

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

cmd/mbf/info.go

@@ -39,14 +39,13 @@ func commandInfo(
 	t := rosa.Native().Std()
 	for i, name := range args {
 		handle := rosa.ArtifactH(unique.Make(name))
-		if meta := rosa.Native().Get(handle); meta == nil {
+		if meta, a := t.Load(handle); meta == nil {
 			return fmt.Errorf("unknown artifact %q", name)
 		} else {
 			var suffix string
 
-			a, version := t.MustLoad(handle)
+			if meta.Version != rosa.Unversioned {
-			if version != rosa.Unversioned {
+				suffix += "-" + meta.Version
-				suffix += "-" + version
 			}
 			mustPrintln("name        : " + name + suffix)
 
@@ -58,9 +57,10 @@ func commandInfo(
 			if len(meta.Dependencies) > 0 {
 				mustPrint("depends on  :")
 				for _, d := range meta.Dependencies {
-					s := rosa.Native().MustGet(d).Name
+					_meta, _ := rosa.Native().Std().MustLoad(d)
-					if _, _version := t.Load(d); _version != rosa.Unversioned {
+					s := _meta.Name
-						s += "-" + _version
+					if _meta.Version != rosa.Unversioned {
+						s += "-" + _meta.Version
 					}
 					mustPrint(" " + s)
 				}

cmd/mbf/info_test.go

@@ -22,12 +22,12 @@ func TestInfo(t *testing.T) {
 	t.Parallel()
 
 	_t := rosa.Native().Std()
-	_, qemuVersion := _t.Load(rosa.QEMU)
+	qemuMeta, _ := _t.Load(rosa.QEMU)
-	_, glibVersion := _t.Load(rosa.GLib)
+	glibMeta, _ := _t.Load(rosa.GLib)
-	zlib, zlibVersion := _t.Load(rosa.Zlib)
+	zlibMeta, zlib := _t.Load(rosa.Zlib)
-	_, zstdVersion := _t.Load(rosa.Zstd)
+	zstdMeta, _ := _t.Load(rosa.Zstd)
-	_, hakureiVersion := _t.Load(rosa.Hakurei)
+	hakureiMeta, _ := _t.Load(rosa.Hakurei)
-	_, hakureiDistVersion := _t.Load(rosa.HakureiDist)
+	hakureiDistMeta, _ := _t.Load(rosa.HakureiDist)
 
 	testCases := []struct {
 		name    string
@@ -38,24 +38,24 @@ func TestInfo(t *testing.T) {
 		wantErr any
 	}{
 		{"qemu", []string{"qemu"}, nil, "", `
-name        : qemu-` + qemuVersion + `
+name        : qemu-` + qemuMeta.Version + `
 description : a generic and open source machine emulator and virtualizer
 website     : https://www.qemu.org
-depends on  : glib-` + glibVersion + ` zstd-` + zstdVersion + `
+depends on  : glib-` + glibMeta.Version + ` zstd-` + zstdMeta.Version + `
 `, nil},
 
 		{"multi", []string{"hakurei", "hakurei-dist"}, nil, "", `
-name        : hakurei-` + hakureiVersion + `
+name        : hakurei-` + hakureiMeta.Version + `
 description : low-level userspace tooling for Rosa OS
 website     : https://hakurei.app
 
-name        : hakurei-dist-` + hakureiDistVersion + `
+name        : hakurei-dist-` + hakureiDistMeta.Version + `
 description : low-level userspace tooling for Rosa OS (distribution tarball)
 website     : https://hakurei.app
 `, nil},
 
 		{"nonexistent", []string{"zlib", "\x00"}, nil, "", `
-name        : zlib-` + zlibVersion + `
+name        : zlib-` + zlibMeta.Version + `
 description : lossless data-compression library
 website     : https://zlib.net
 
@@ -65,12 +65,12 @@ website     : https://zlib.net
 			"zstd":    "internal/pkg (amd64) on satori\n",
 			"hakurei": "internal/pkg (amd64) on satori\n\n",
 		}, "", `
-name        : zlib-` + zlibVersion + `
+name        : zlib-` + zlibMeta.Version + `
 description : lossless data-compression library
 website     : https://zlib.net
 status      : not yet cured
 
-name        : zstd-` + zstdVersion + `
+name        : zstd-` + zstdMeta.Version + `
 description : a fast compression algorithm
 website     : https://facebook.github.io/zstd
 status      : internal/pkg (amd64) on satori
@@ -79,7 +79,7 @@ status      : internal/pkg (amd64) on satori
 		{"status cache perm", []string{"zlib"}, map[string]string{
 			"zlib": "\x00",
 		}, "", `
-name        : zlib-` + zlibVersion + `
+name        : zlib-` + zlibMeta.Version + `
 description : lossless data-compression library
 website     : https://zlib.net
 `, func(cm *cache) error {
@@ -91,7 +91,7 @@ website     : https://zlib.net
 		}},
 
 		{"status report", []string{"zlib"}, nil, strings.Repeat("\x00", len(pkg.Checksum{})+8), `
-name        : zlib-` + zlibVersion + `
+name        : zlib-` + zlibMeta.Version + `
 description : lossless data-compression library
 website     : https://zlib.net
 status      : not in report
@@ -140,7 +140,7 @@ status      : not in report
 
 			if tc.status != nil {
 				for name, status := range tc.status {
-					a, _ := _t.Load(rosa.ArtifactH(unique.Make(name)))
+					_, a := _t.Load(rosa.ArtifactH(unique.Make(name)))
 					if a == nil {
 						t.Fatalf("invalid name %q", name)
 					}

cmd/mbf/internal/pkgserver/index.go

@@ -33,10 +33,10 @@ type packageIndex struct {
 // metadata holds [rosa.Metadata] extended with additional information.
 type metadata struct {
 	handle rosa.ArtifactH
-	*rosa.Artifact
+	*rosa.Metadata
 
-	// Populated via [rosa.Toolchain.Version], [rosa.Unversioned] is equivalent
+	// Copied from [rosa.Metadata], [rosa.Unversioned] is equivalent to the zero
-	// to the zero value. Otherwise, the zero value is invalid.
+	// value. Otherwise, the zero value is invalid.
 	Version string `json:"version,omitempty"`
 	// Output data size, available if present in report.
 	Size int64 `json:"size,omitempty"`
@@ -61,12 +61,12 @@ func (index *packageIndex) populate(report *rosa.Report) (err error) {
 	index.names = make(map[string]*metadata)
 	ir := pkg.NewIR()
 	for i, handle := range handles {
-		a, version := rosa.Native().Std().MustLoad(handle)
+		meta, a := rosa.Native().Std().MustLoad(handle)
 		m := metadata{
 			handle: handle,
 
-			Artifact: rosa.Native().MustGet(handle),
+			Metadata: meta,
-			Version:  version,
+			Version:  meta.Version,
 		}
 		if m.Version == "" {
 			return errors.New("invalid version from " + m.Name)

cmd/mbf/main.go

@@ -118,7 +118,7 @@ func main() {
 		rosa.Native().DropCaches("", flags)
 		cross := flagArch != "" && flagArch != runtime.GOARCH
 		if flagQEMU || cross {
-			cm.qemu, _ = rosa.Native().Std().Load(rosa.QEMU)
+			_, cm.qemu = rosa.Native().Std().MustLoad(rosa.QEMU)
 		}
 
 		if cross {
@@ -358,7 +358,7 @@ func main() {
 			for range max(flagJobs, 1) {
 				wg.Go(func() {
 					for p := range w {
-						meta := rosa.Native().MustGet(p)
+						meta, _ := rosa.Native().Std().MustLoad(p)
 						if meta.ID == 0 {
 							continue
 						}
@@ -371,13 +371,9 @@ func main() {
 							continue
 						}
 
-						_, version := rosa.Native().Std().Load(p)
+						if latest := meta.GetLatest(v); meta.Version != latest {
-						if current, latest :=
-							version,
-							meta.GetLatest(v); current != latest {
-
 							n.Add(1)
-							log.Printf("%s %s < %s", meta.Name, current, latest)
+							log.Printf("%s %s < %s", meta.Name, meta.Version, latest)
 							continue
 						}
 
@@ -453,7 +449,7 @@ func main() {
 				)
 
 				if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					llvm, _ := rosa.Native().New(s - 2).Load(rosa.LLVM)
+					_, llvm := rosa.Native().New(s - 2).Load(rosa.LLVM)
 					pathname, _, err = cache.Cure(llvm)
 					return
 				}); err != nil {
@@ -462,7 +458,7 @@ func main() {
 				log.Println("stage1:", pathname)
 
 				if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					llvm, _ := rosa.Native().New(s - 1).Load(rosa.LLVM)
+					_, llvm := rosa.Native().New(s - 1).Load(rosa.LLVM)
 					pathname, checksum[0], err = cache.Cure(llvm)
 					return
 				}); err != nil {
@@ -470,7 +466,7 @@ func main() {
 				}
 				log.Println("stage2:", pathname)
 				if err = cm.Do(func(cache *pkg.Cache) (err error) {
-					llvm, _ := rosa.Native().New(s).Load(rosa.LLVM)
+					_, llvm := rosa.Native().New(s).Load(rosa.LLVM)
 					pathname, checksum[1], err = cache.Cure(llvm)
 					return
 				}); err != nil {
@@ -492,7 +488,7 @@ func main() {
 
 				if flagStage0 {
 					if err = cm.Do(func(cache *pkg.Cache) (err error) {
-						stage0, _ := rosa.Native().New(s).Load(rosa.Stage0)
+						_, stage0 := rosa.Native().New(s).Load(rosa.Stage0)
 						pathname, _, err = cache.Cure(stage0)
 						return
 					}); err != nil {
@@ -546,7 +542,7 @@ func main() {
 					t -= 1
 				}
 
-				a, _ := rosa.Native().New(t).Load(rosa.ArtifactH(unique.Make(args[0])))
+				_, a := rosa.Native().New(t).Load(rosa.ArtifactH(unique.Make(args[0])))
 				if a == nil {
 					return fmt.Errorf("unknown artifact %q", args[0])
 				}
@@ -762,7 +758,7 @@ func main() {
 				handles := make([]rosa.ArtifactH, len(args)+3)
 				for i, arg := range args {
 					handles[i] = rosa.ArtifactH(unique.Make(arg))
-					if rosa.Native().Get(handles[i]) == nil {
+					if meta, _ := rosa.Native().Std().Load(handles[i]); meta == nil {
 						return fmt.Errorf("unknown artifact %q", arg)
 					}
 				}

cmd/mbf/main_test.go

@@ -36,8 +36,8 @@ func TestCureAll(t *testing.T) {
 	})
 
 	for _, handle := range rosa.Native().Collect() {
-		a, _ := rosa.Native().Std().MustLoad(handle)
+		_, a := rosa.Native().Std().MustLoad(handle)
-		t.Run(rosa.Native().MustGet(handle).Name, func(t *testing.T) {
+		t.Run(handle.String(), func(t *testing.T) {
 			_, err := cureRemote(t.Context(), &addr, a, 0)
 			if err != nil {
 				t.Error(err)

internal/rosa/argp-standalone.go

@@ -26,9 +26,7 @@ install -D -m755 libargp.a /work/system/lib/libargp.a
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newArgpStandalone, &Metadata{
-		f: Toolchain.newArgpStandalone,
-
 		Name:        "argp-standalone",
 		Description: "hierarchical argument parsing library broken out from glibc",
 		Website:     "http://www.lysator.liu.se/~nisse/misc/",

internal/rosa/bison.go

@@ -66,9 +66,7 @@ func (t Toolchain) newBison() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newBison, &Metadata{
-		f: Toolchain.newBison,
-
 		Name:        "bison",
 		Description: "a general-purpose parser generator",
 		Website:     "https://www.gnu.org/software/bison/",

internal/rosa/bzip2.go

@@ -26,9 +26,7 @@ func (t Toolchain) newBzip2() (pkg.Artifact, string) {
 	}), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newBzip2, &Metadata{
-		f: Toolchain.newBzip2,
-
 		Name:        "bzip2",
 		Description: "a freely available, patent free, high-quality data compressor",
 		Website:     "https://sourceware.org/bzip2/",

internal/rosa/cmake.go

@@ -106,9 +106,7 @@ index 2ead810437..f85cbb8b1c 100644
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newCMake, &Metadata{
-		f: Toolchain.newCMake,
-
 		Name:        "cmake",
 		Description: "cross-platform, open-source build system",
 		Website:     "https://cmake.org/",

internal/rosa/connman.go

@@ -90,9 +90,7 @@ func (t Toolchain) newConnman() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newConnman, &Metadata{
-		f: Toolchain.newConnman,
-
 		Name:        "connman",
 		Description: "a daemon for managing Internet connections",
 		Website:     "https://git.kernel.org/pub/scm/network/connman/connman.git/",

internal/rosa/curl.go

@@ -39,9 +39,7 @@ chmod +w tests/data && rm -f tests/data/test459
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newCurl, &Metadata{
-		f: Toolchain.newCurl,
-
 		Name:        "curl",
 		Description: "command line tool and library for transferring data with URLs",
 		Website:     "https://curl.se/",

internal/rosa/dbus.go

@@ -29,9 +29,7 @@ func (t Toolchain) newDBus() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newDBus, &Metadata{
-		f: Toolchain.newDBus,
-
 		Name:        "dbus",
 		Description: "a message bus system",
 		Website:     "https://www.freedesktop.org/wiki/Software/dbus/",
@@ -65,9 +63,7 @@ func (t Toolchain) newXDGDBusProxy() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newXDGDBusProxy, &Metadata{
-		f: Toolchain.newXDGDBusProxy,
-
 		Name:        "xdg-dbus-proxy",
 		Description: "a filtering proxy for D-Bus connections",
 		Website:     "https://github.com/flatpak/xdg-dbus-proxy",

internal/rosa/dtc.go

@@ -31,9 +31,7 @@ func (t Toolchain) newDTC() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newDTC, &Metadata{
-		f: Toolchain.newDTC,
-
 		Name:        "dtc",
 		Description: "The Device Tree Compiler",
 		Website:     "https://git.kernel.org/pub/scm/utils/dtc/dtc.git/",

internal/rosa/elfutils.go

@@ -39,9 +39,7 @@ func (t Toolchain) newElfutils() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newElfutils, &Metadata{
-		f: Toolchain.newElfutils,
-
 		Name:        "elfutils",
 		Description: "utilities and libraries to handle ELF files and DWARF data",
 		Website:     "https://sourceware.org/elfutils/",

internal/rosa/fakeroot.go

@@ -46,9 +46,7 @@ index f135ad9..85c784c 100644
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newFakeroot, &Metadata{
-		f: Toolchain.newFakeroot,
-
 		Name:        "fakeroot",
 		Description: "tool for simulating superuser privileges",
 		Website:     "https://salsa.debian.org/clint/fakeroot",

internal/rosa/flex.go

@@ -20,9 +20,7 @@ func (t Toolchain) newFlex() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newFlex, &Metadata{
-		f: Toolchain.newFlex,
-
 		Name:        "flex",
 		Description: "scanner generator for lexing in C and C++",
 		Website:     "https://github.com/westes/flex/",

internal/rosa/freetype.go

@@ -15,9 +15,7 @@ func (t Toolchain) newFreetype() (pkg.Artifact, string) {
 	), nil, (*MakeHelper)(nil)), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newFreetype, &Metadata{
-		f: Toolchain.newFreetype,
-
 		Name:        "freetype",
 		Description: "a freely available software library to render fonts",
 		Website:     "http://www.freetype.org/",

internal/rosa/fuse.go

@@ -31,9 +31,7 @@ func (t Toolchain) newFuse() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newFuse, &Metadata{
-		f: Toolchain.newFuse,
-
 		Name:        "fuse",
 		Description: "the reference implementation of the Linux FUSE interface",
 		Website:     "https://github.com/libfuse/libfuse/",

internal/rosa/git.go

@@ -88,9 +88,7 @@ disable_test t5515-fetch-merge-logic
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newGit, &Metadata{
-		f: Toolchain.newGit,
-
 		Name:        "git",
 		Description: "distributed version control system",
 		Website:     "https://www.git-scm.com/",

internal/rosa/glslang.go

@@ -22,9 +22,7 @@ func (t Toolchain) newSPIRVHeaders() (pkg.Artifact, string) {
 	}), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newSPIRVHeaders, &Metadata{
-		f: Toolchain.newSPIRVHeaders,
-
 		Name:        "spirv-headers",
 		Description: "machine-readable files for the SPIR-V Registry",
 		Website:     "https://github.com/KhronosGroup/SPIRV-Headers",
@@ -72,9 +70,7 @@ func (t Toolchain) newSPIRVTools() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newSPIRVTools, &Metadata{
-		f: Toolchain.newSPIRVTools,
-
 		Name:        "spirv-tools",
 		Description: "an API and commands for processing SPIR-V modules",
 		Website:     "https://github.com/KhronosGroup/SPIRV-Tools",
@@ -116,9 +112,7 @@ func (t Toolchain) newGlslang() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newGlslang, &Metadata{
-		f: Toolchain.newGlslang,
-
 		Name:        "glslang",
 		Description: "reference front end for GLSL/ESSL",
 		Website:     "https://github.com/KhronosGroup/glslang",
@@ -232,9 +226,7 @@ export LIT_OPTS=` + litArgs(true, skipChecks...) + `
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newSPIRVLLVMTranslator, &Metadata{
-		f: Toolchain.newSPIRVLLVMTranslator,
-
 		Name:        "spirv-llvm-translator",
 		Description: "bi-directional translation between SPIR-V and LLVM IR",
 		Website:     "https://github.com/KhronosGroup/SPIRV-LLVM-Translator",

internal/rosa/go.go

@@ -166,9 +166,7 @@ rm \
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newGoLatest, &Metadata{
-		f: Toolchain.newGoLatest,
-
 		Name:        "go",
 		Description: "the Go programming language toolchain",
 		Website:     "https://go.dev/",

internal/rosa/gtk.go

@@ -42,9 +42,7 @@ func (t Toolchain) newGLib() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newGLib, &Metadata{
-		f: Toolchain.newGLib,
-
 		Name:        "glib",
 		Description: "the GNU library of miscellaneous stuff",
 		Website:     "https://developer.gnome.org/glib/",

internal/rosa/hakurei.go

@@ -58,8 +58,7 @@ func main() {
 	)))
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(func(t Toolchain) (pkg.Artifact, string) {
-		f: func(t Toolchain) (pkg.Artifact, string) {
 		return t.newHakurei("", `
 mkdir -p /work/system/libexec/hakurei/
 
@@ -86,16 +85,14 @@ mkdir -p /work/system/bin/
 	sharefs \
 	../../bin/)
 `, true), hakureiVersion
-		},
+	}, &Metadata{
-
 		Name:        "hakurei",
 		Description: "low-level userspace tooling for Rosa OS",
 		Website:     "https://hakurei.app/",
 
 		ID: 388834,
 	})
-	native.MustRegister(&Artifact{
+	native.mustRegister(func(t Toolchain) (pkg.Artifact, string) {
-		f: func(t Toolchain) (pkg.Artifact, string) {
 		name := "all"
 		if t.opts&OptSkipCheck != 0 {
 			name = "make"
@@ -104,8 +101,7 @@ mkdir -p /work/system/bin/
 export HAKUREI_VERSION
 DESTDIR=/work /usr/src/hakurei/`+name+`.sh
 `, true), hakureiVersion
-		},
+	}, &Metadata{
-
 		Name:        "hakurei-dist",
 		Description: "low-level userspace tooling for Rosa OS (distribution tarball)",
 		Website:     "https://hakurei.app/",

internal/rosa/hwdata.go

@@ -22,9 +22,7 @@ func (t Toolchain) newHwdata() (pkg.Artifact, string) {
 	}), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newHwdata, &Metadata{
-		f: Toolchain.newHwdata,
-
 		Name:        "hwdata",
 		Description: "contains various hardware identification and configuration data",
 		Website:     "https://github.com/vcrhonek/hwdata",

internal/rosa/images.go

@@ -6,12 +6,13 @@ import (
 )
 
 func init() {
-	native.MustRegister(&Artifact{
+	meta := Metadata{
 		Name:        "earlyinit",
 		Description: "Rosa OS initramfs init program",
-
+		Version:     Unversioned,
-		f: func(t Toolchain) (pkg.Artifact, string) {
+	}
-			return t.newHakurei("-early-init", `
+	native.MustRegister(meta.Name, func(t Toolchain) (*Metadata, pkg.Artifact) {
+		return &meta, t.newHakurei("-early-init", `
 mkdir -p /work/system/libexec/hakurei/
 
 echo '# Building earlyinit.'
@@ -22,12 +23,18 @@ go build -trimpath -v -o /work/system/libexec/hakurei -ldflags="-s -w
 	-X hakurei.app/internal/info.buildVersion=${HAKUREI_VERSION}
 " ./cmd/earlyinit
 echo
-`, false), Unversioned
+`, false)
-		},
 	})
 }
-func (t Toolchain) newImageSystem() (pkg.Artifact, string) {
+
-	return t.New("system.img", TNoToolchain, t.Append(nil,
+func init() {
+	meta := Metadata{
+		Name:        "system-image",
+		Description: "Rosa OS system image",
+		Version:     Unversioned,
+	}
+	native.MustRegister(meta.Name, func(t Toolchain) (*Metadata, pkg.Artifact) {
+		return &meta, t.New("system.img", TNoToolchain, t.Append(nil,
 			SquashfsTools,
 		), nil, nil, `
 mksquashfs /mnt/system /work/system.img
@@ -39,18 +46,18 @@ mksquashfs /mnt/system /work/system.img
 			Kmod,
 			Kernel,
 			Firmware,
-	)...)), Unversioned
+		)...))
-}
-func init() {
-	native.MustRegister(&Artifact{
-		Name:        "system-image",
-		Description: "Rosa OS system image",
-
-		f: Toolchain.newImageSystem,
 	})
 }
-func (t Toolchain) newImageInitramfs() (pkg.Artifact, string) {
+
-	return t.New("initramfs", TNoToolchain, t.Append(nil,
+func init() {
+	meta := Metadata{
+		Name:        "initramfs-image",
+		Description: "Rosa OS initramfs image",
+		Version:     Unversioned,
+	}
+	native.MustRegister(meta.Name, func(t Toolchain) (*Metadata, pkg.Artifact) {
+		return &meta, t.New("initramfs", TNoToolchain, t.Append(nil,
 			Zstd,
 			EarlyInit,
 			GenInitCPIO,
@@ -61,13 +68,6 @@ dir /dev 0755 0 0
 nod /dev/null 0666 0 0 c 1 3
 nod /dev/console 0600 0 0 c 5 1
 file /init /system/libexec/hakurei/earlyinit 0555 0 0
-`)))), Unversioned
+`))))
-}
-func init() {
-	native.MustRegister(&Artifact{
-		Name:        "initramfs-image",
-		Description: "Rosa OS initramfs image",
-
-		f: Toolchain.newImageInitramfs,
 	})
 }

internal/rosa/kernel.go

@@ -19,9 +19,7 @@ chmod -R +w /work/usr/src/linux/
 `, pkg.Path(AbsUsrSrc.Append("linux"), false, kernelSource)), kernelVersion
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newKernelSource, &Metadata{
-		f: Toolchain.newKernelSource,
-
 		Name:        "kernel-source",
 		Description: "a writable kernel source tree installed to /usr/src/linux",
 		Website:     "https://kernel.org/",
@@ -70,9 +68,7 @@ cat \
 	), kernelVersion
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newKernelHeaders, &Metadata{
-		f: Toolchain.newKernelHeaders,
-
 		Name:        "kernel-headers",
 		Description: "an installation of kernel headers",
 		Website:     "https://kernel.org/",
@@ -1275,9 +1271,7 @@ rm -v /work/system/lib/modules/` + kernelVersion + `/build
 	), kernelVersion
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newKernel, &Metadata{
-		f: Toolchain.newKernel,
-
 		Name:        "kernel",
 		Description: "the generic Rosa OS linux kernel",
 		Website:     "https://kernel.org/",
@@ -1293,9 +1287,7 @@ cc -o /work/system/bin/gen_init_cpio /usr/src/linux/usr/gen_init_cpio.c
 `, pkg.Path(AbsUsrSrc.Append("linux"), false, kernelSource)), kernelVersion
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newGenInitCPIO, &Metadata{
-		f: Toolchain.newGenInitCPIO,
-
 		Name:        "gen_init_cpio",
 		Description: "a program in the kernel source tree for creating initramfs archive",
 	})
@@ -1340,9 +1332,7 @@ func (t Toolchain) newFirmware() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newFirmware, &Metadata{
-		f: Toolchain.newFirmware,
-
 		Name:        "firmware",
 		Description: "firmware blobs for use with the Linux kernel",
 		Website:     "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/",

internal/rosa/kmod.go

@@ -32,9 +32,7 @@ func (t Toolchain) newKmod() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newKmod, &Metadata{
-		f: Toolchain.newKmod,
-
 		Name:        "kmod",
 		Description: "a set of tools to handle common tasks with Linux kernel modules",
 		Website:     "https://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git",

internal/rosa/libarchive.go

@@ -88,9 +88,7 @@ install -Dv /usr/src/CTestCustom.cmake /cure/
 	}, (*CMakeHelper)(nil)), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibarchive, &Metadata{
-		f: Toolchain.newLibarchive,
-
 		Name:        "libarchive",
 		Description: "multi-format archive and compression library",
 		Website:     "https://www.libarchive.org/",

internal/rosa/libbsd.go

@@ -21,9 +21,7 @@ install -D /usr/src/libmd/src/helper.c src/helper.c
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibmd, &Metadata{
-		f: Toolchain.newLibmd,
-
 		Name:        "libmd",
 		Description: "Message Digest functions from BSD systems",
 		Website:     "https://www.hadrons.org/software/libmd/",
@@ -50,9 +48,7 @@ func (t Toolchain) newLibbsd() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibbsd, &Metadata{
-		f: Toolchain.newLibbsd,
-
 		Name:        "libbsd",
 		Description: "provides useful functions commonly found on BSD systems",
 		Website:     "https://libbsd.freedesktop.org/",

internal/rosa/libcap.go

@@ -42,9 +42,7 @@ ln -s ../system/bin/bash /bin/
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibcap, &Metadata{
-		f: Toolchain.newLibcap,
-
 		Name:        "libcap",
 		Description: "a library for getting and setting POSIX.1e draft 15 capabilities",
 		Website:     "https://sites.google.com/site/fullycapable/",

internal/rosa/libconfig.go

@@ -38,9 +38,7 @@ index eba7eae..f916d2e 100644
 	}, (*CMakeHelper)(nil)), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibconfig, &Metadata{
-		f: Toolchain.newLibconfig,
-
 		Name:        "libconfig",
 		Description: "a simple library for processing structured configuration files",
 		Website:     "https://hyperrealm.github.io/libconfig/",

internal/rosa/libdisplay-info.go

@@ -18,9 +18,7 @@ func (t Toolchain) newLibdisplayInfo() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibdisplayInfo, &Metadata{
-		f: Toolchain.newLibdisplayInfo,
-
 		Name:        "libdisplay-info",
 		Description: "EDID and DisplayID library",
 		Website:     "https://gitlab.freedesktop.org/emersion/libdisplay-info",

internal/rosa/libepoxy.go

@@ -21,9 +21,7 @@ func (t Toolchain) newLibepoxy() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibepoxy, &Metadata{
-		f: Toolchain.newLibepoxy,
-
 		Name:        "libepoxy",
 		Description: "a library for handling OpenGL function pointer management",
 		Website:     "https://github.com/anholt/libepoxy",

internal/rosa/libev.go

@@ -14,9 +14,7 @@ func (t Toolchain) newLibev() (pkg.Artifact, string) {
 	), nil, (*MakeHelper)(nil)), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibev, &Metadata{
-		f: Toolchain.newLibev,
-
 		Name:        "libev",
 		Description: "a full-featured and high-performance event loop",
 		Website:     "http://libev.schmorp.de/",

internal/rosa/libexpat.go

@@ -22,9 +22,7 @@ func (t Toolchain) newLibexpat() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibexpat, &Metadata{
-		f: Toolchain.newLibexpat,
-
 		Name:        "libexpat",
 		Description: "a stream-oriented XML parser library",
 		Website:     "https://libexpat.github.io/",

internal/rosa/libffi.go

@@ -18,9 +18,7 @@ func (t Toolchain) newLibffi() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibffi, &Metadata{
-		f: Toolchain.newLibffi,
-
 		Name:        "libffi",
 		Description: "a portable, high level programming interface to various calling conventions",
 		Website:     "https://sourceware.org/libffi/",

internal/rosa/libgd.go

@@ -24,9 +24,7 @@ mkdir /dev/shm/gd
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibgd, &Metadata{
-		f: Toolchain.newLibgd,
-
 		Name:        "libgd",
 		Description: "an open source code library for the dynamic creation of images",
 		Website:     "https://libgd.github.io/",

internal/rosa/libpng.go

@@ -22,9 +22,7 @@ func (t Toolchain) newLibpng() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibpng, &Metadata{
-		f: Toolchain.newLibpng,
-
 		Name:        "libpng",
 		Description: "the official PNG reference library",
 		Website:     "https://www.libpng.org/pub/png/libpng.html",

internal/rosa/libpsl.go

@@ -25,9 +25,7 @@ test_disable 'int main(){return 0;}' tests/test-is-public-builtin.c
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibpsl, &Metadata{
-		f: Toolchain.newLibpsl,
-
 		Name:        "libpsl",
 		Description: "provides functions to work with the Mozilla Public Suffix List",
 		Website:     "https://rockdaboot.github.io/libpsl/",

internal/rosa/libseccomp.go

@@ -43,9 +43,7 @@ index adccef3..65a277a 100644
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibseccomp, &Metadata{
-		f: Toolchain.newLibseccomp,
-
 		Name:        "libseccomp",
 		Description: "an interface to the Linux Kernel's syscall filtering mechanism",
 		Website:     "https://github.com/seccomp/libseccomp/",

internal/rosa/libtirpc.go

@@ -32,9 +32,7 @@ func (t Toolchain) newLibtirpc() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibtirpc, &Metadata{
-		f: Toolchain.newLibtirpc,
-
 		Name:        "libtirpc",
 		Description: "a port of Suns Transport-Independent RPC library to Linux",
 		Website:     "https://sourceforge.net/projects/libtirpc/",

internal/rosa/libucontext.go

@@ -27,9 +27,7 @@ func (t Toolchain) newLibucontext() (pkg.Artifact, string) {
 	}), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibucontext, &Metadata{
-		f: Toolchain.newLibucontext,
-
 		Name:        "libucontext",
 		Description: "ucontext implementation featuring glibc-compatible ABI",
 		Website:     "https://github.com/kaniini/libucontext/",

internal/rosa/libxml2.go

@@ -20,9 +20,7 @@ func (t Toolchain) newLibxml2() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxml2, &Metadata{
-		f: Toolchain.newLibxml2,
-
 		Name:        "libxml2",
 		Description: "an XML toolkit implemented in C",
 		Website:     "https://gitlab.gnome.org/GNOME/libxml2/",

internal/rosa/libxslt.go

@@ -26,9 +26,7 @@ func (t Toolchain) newLibxslt() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxslt, &Metadata{
-		f: Toolchain.newLibxslt,
-
 		Name:        "libxslt",
 		Description: "an XSLT processor based on libxml2",
 		Website:     "https://gitlab.gnome.org/GNOME/libxslt/",

internal/rosa/llvm.go

@@ -29,10 +29,20 @@ func litArgs(verbose bool, skipChecks ...string) string {
 	return "'" + strings.Join(args, " ") + "'"
 }
 
-func (t Toolchain) newEarlyCompilerRT() (pkg.Artifact, string) {
+func init() {
-	source, version := t.Load(llvmSource)
+	native.MustRegister("early-compiler-rt", func(t Toolchain) (*Metadata, pkg.Artifact) {
-	major, _, _ := strings.Cut(version, ".")
+		meta := Metadata{
-	return t.NewPackage("early-compiler-rt", version, source, &PackageAttr{
+			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"},
@@ -82,24 +92,22 @@ ln -s \
 
 			muslHeaders,
 			KernelHeaders,
-	), version
+		)
-}
+	})
-func init() {
-	native.MustRegister(&Artifact{
-		f: Toolchain.newEarlyCompilerRT,
 
-		Name:        "early-compiler-rt",
+	native.MustRegister("early-runtimes", func(t Toolchain) (*Metadata, pkg.Artifact) {
-		Description: "early LLVM runtime: compiler-rt",
+		meta := Metadata{
+			Name:        "early-runtimes",
+			Description: "early LLVM runtimes: libunwind, libcxx, libcxxabi",
 
 			Dependencies: P{
-			Musl,
+				earlyCompilerRT,
 			},
-	})
+		}
-}
+		_meta, source := t.MustLoad(llvmSource)
+		meta.Version = _meta.Version
 
-func (t Toolchain) newEarlyRuntimes() (pkg.Artifact, string) {
+		return &meta, t.NewPackage("early-runtimes", meta.Version, source, &PackageAttr{
-	source, version := t.Load(llvmSource)
-	return t.NewPackage("early-runtimes", version, source, &PackageAttr{
 			Flag: TExclusive,
 		}, &CMakeHelper{
 			Append: []string{"runtimes"},
@@ -142,22 +150,44 @@ func (t Toolchain) newEarlyRuntimes() (pkg.Artifact, string) {
 			Zstd,
 			earlyCompilerRT,
 			KernelHeaders,
-	), version
+		)
-}
+	})
-func init() {
-	native.MustRegister(&Artifact{
-		f: Toolchain.newEarlyRuntimes,
 
-		Name:        "early-runtimes",
+	const (
-		Description: "early LLVM runtimes: libunwind, libcxx, libcxxabi",
+		version  = "22.1.5"
+		checksum = "32gOaLPHcUlo3hkdk5RbFumTE01XKeCAYZcpvn8IDHF95egXVfDFSl6eZL3ChMen"
+	)
+
+	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",
+			Description: "a collection of modular and reusable compiler and toolchain technologies",
+			Website:     "https://llvm.org",
 
 			Dependencies: P{
-			earlyCompilerRT,
+				Zlib,
+				Zstd,
+				Musl,
 			},
-	})
+		}
-}
+		_meta, source := t.MustLoad(llvmSource)
+		meta.Version = _meta.Version
 
-func (t Toolchain) newLLVM() (pkg.Artifact, string) {
 		early := muslHeaders
 		if t.stage.isStage0() {
 			// The LLVM build system uses the system installation when building with
@@ -273,8 +303,7 @@ func (t Toolchain) newLLVM() (pkg.Artifact, string) {
 			}...)
 		}
 
-	source, version := t.Load(llvmSource)
+		return &meta, t.NewPackage("llvm", meta.Version, source, &PackageAttr{
-	return t.NewPackage("llvm", version, source, &PackageAttr{
 			Flag: TExclusive,
 		}, &CMakeHelper{
 			Append: []string{"llvm"},
@@ -316,40 +345,7 @@ ninja ` + jobsFlagE + ` check-all
 			Zstd,
 			early,
 			KernelHeaders,
-	), version
-}
-func init() {
-	const (
-		version  = "22.1.5"
-		checksum = "32gOaLPHcUlo3hkdk5RbFumTE01XKeCAYZcpvn8IDHF95egXVfDFSl6eZL3ChMen"
 		)
 
-	native.MustRegister(&Artifact{
-		f: func(t Toolchain) (pkg.Artifact, string) {
-			return t.NewPatchedSource("llvm", version, newFromGitHub(
-				"llvm/llvm-project",
-				"llvmorg-"+version,
-				checksum,
-			), true, llvmPatches...), version
-		},
-
-		Name:        "llvm-project",
-		Description: "LLVM monorepo with Rosa OS patches",
-
-		ID: 1830,
-	})
-
-	native.MustRegister(&Artifact{
-		f: Toolchain.newLLVM,
-
-		Name:        "llvm",
-		Description: "a collection of modular and reusable compiler and toolchain technologies",
-		Website:     "https://llvm.org",
-
-		Dependencies: P{
-			Zlib,
-			Zstd,
-			Musl,
-		},
 	})
 }

internal/rosa/lm-sensors.go

@@ -47,9 +47,7 @@ ln -s \
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLMSensors, &Metadata{
-		f: Toolchain.newLMSensors,
-
 		Name:        "lm_sensors",
 		Description: "user-space support for hardware monitoring drivers",
 		Website:     "https://hwmon.wiki.kernel.org/lm_sensors",

internal/rosa/make.go

@@ -27,9 +27,7 @@ cd "$(mktemp -d)"
 	))), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newMake, &Metadata{
-		f: Toolchain.newMake,
-
 		Name:        "make",
 		Description: "a tool which controls the generation of executables and other non-source files",
 		Website:     "https://www.gnu.org/software/make/",

internal/rosa/mesa.go

@@ -35,9 +35,7 @@ trap 'kill $XVFB_PID && wait $XVFB_PID' EXIT
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibglvnd, &Metadata{
-		f: Toolchain.newLibglvnd,
-
 		Name:        "libglvnd",
 		Description: "The GL Vendor-Neutral Dispatch library",
 		Website:     "https://gitlab.freedesktop.org/glvnd/libglvnd",
@@ -72,9 +70,7 @@ func (t Toolchain) newLibdrm() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibdrm, &Metadata{
-		f: Toolchain.newLibdrm,
-
 		Name:        "libdrm",
 		Description: "a userspace library for accessing the DRM",
 		Website:     "https://dri.freedesktop.org/",
@@ -111,9 +107,7 @@ func (t Toolchain) newLibva() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibva, &Metadata{
-		f: Toolchain.newLibva,
-
 		Name:        "libva",
 		Description: "an implementation for VA-API (Video Acceleration API)",
 		Website:     "https://01.org/vaapi",
@@ -238,9 +232,7 @@ func (t Toolchain) newMesa() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newMesa, &Metadata{
-		f: Toolchain.newMesa,
-
 		Name:        "mesa",
 		Description: "open source implementations of OpenGL, OpenGL ES, Vulkan, OpenCL, and more",
 		Website:     "https://mesa3d.org",

internal/rosa/meson.go

@@ -52,9 +52,7 @@ python3 ./run_project_tests.py \
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newMeson, &Metadata{
-		f: Toolchain.newMeson,
-
 		Name:        "meson",
 		Description: "an open source build system",
 		Website:     "https://mesonbuild.com/",

internal/rosa/mksh.go

@@ -36,9 +36,7 @@ ln -vs ../system/bin/sh /work/bin/
 	))), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newMksh, &Metadata{
-		f: Toolchain.newMksh,
-
 		Name:        "mksh",
 		Description: "MirBSD Korn Shell",
 		Website:     "https://www.mirbsd.org/mksh",

internal/rosa/musl-fts.go

@@ -24,9 +24,7 @@ func (t Toolchain) newMuslFts() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newMuslFts, &Metadata{
-		f: Toolchain.newMuslFts,
-
 		Name:        "musl-fts",
 		Description: "implementation of fts(3) functions which are missing in musl libc",
 		Website:     "https://github.com/void-linux/musl-fts",

internal/rosa/musl-obstack.go

@@ -24,9 +24,7 @@ func (t Toolchain) newMuslObstack() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newMuslObstack, &Metadata{
-		f: Toolchain.newMuslObstack,
-
 		Name:        "musl-obstack",
 		Description: "obstack functions and macros separated from glibc",
 		Website:     "https://github.com/void-linux/musl-obstack",

internal/rosa/musl.go

@@ -75,11 +75,9 @@ index 715948f4..c2fece68 100644
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(func(t Toolchain) (pkg.Artifact, string) {
-		f: func(t Toolchain) (pkg.Artifact, string) {
 		return t.newMusl(false)
-		},
+	}, &Metadata{
-
 		Name:        "musl",
 		Description: "an implementation of the C standard library",
 		Website:     "https://musl.libc.org/",
@@ -87,11 +85,9 @@ func init() {
 		ID: 11688,
 	})
 
-	native.MustRegister(&Artifact{
+	native.mustRegister(func(t Toolchain) (pkg.Artifact, string) {
-		f: func(t Toolchain) (pkg.Artifact, string) {
 		return t.newMusl(true)
-		},
+	}, &Metadata{
-
 		Name:        "musl-headers",
 		Description: "system installation of musl headers",
 	})

internal/rosa/ncurses.go

@@ -26,9 +26,7 @@ func (t Toolchain) newNcurses() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newNcurses, &Metadata{
-		f: Toolchain.newNcurses,
-
 		Name:        "ncurses",
 		Description: "a free software emulation of curses in System V Release 4.0 (SVr4)",
 		Website:     "https://invisible-island.net/ncurses/",

internal/rosa/netfilter.go

@@ -39,9 +39,7 @@ index d223ac2..a7878d0 100644
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibmnl, &Metadata{
-		f: Toolchain.newLibmnl,
-
 		Name:        "libmnl",
 		Description: "a minimalistic user-space library oriented to Netlink developers",
 		Website:     "https://www.netfilter.org/projects/libmnl/",
@@ -77,9 +75,7 @@ func (t Toolchain) newLibnftnl() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibnftnl, &Metadata{
-		f: Toolchain.newLibnftnl,
-
 		Name:        "libnftnl",
 		Description: "a userspace library providing a low-level netlink API to the in-kernel nf_tables subsystem",
 		Website:     "https://www.netfilter.org/projects/libnftnl/",
@@ -131,9 +127,7 @@ chmod +w /etc/ && ln -s ../usr/src/iptables/etc/ethertypes /etc/
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newIPTables, &Metadata{
-		f: Toolchain.newIPTables,
-
 		Name:        "iptables",
 		Description: "the userspace command line program used to configure the Linux 2.4.x and later packet filtering ruleset",
 		Website:     "https://www.netfilter.org/projects/iptables/",

internal/rosa/nettle.go

@@ -19,9 +19,7 @@ func (t Toolchain) newNettle() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newNettle, &Metadata{
-		f: Toolchain.newNettle,
-
 		Name:        "nettle",
 		Description: "a low-level cryptographic library",
 		Website:     "https://www.lysator.liu.se/~nisse/nettle/",

internal/rosa/nettle3.go

@@ -19,9 +19,7 @@ func (t Toolchain) newNettle3() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newNettle3, &Metadata{
-		f: Toolchain.newNettle3,
-
 		Name:        "nettle3",
 		Description: "a low-level cryptographic library",
 		Website:     "https://www.lysator.liu.se/~nisse/nettle/",

internal/rosa/ninja.go

@@ -7,8 +7,8 @@ func (t Toolchain) newNinja() (pkg.Artifact, string) {
 		version  = "1.13.2"
 		checksum = "ygKWMa0YV2lWKiFro5hnL-vcKbc_-RACZuPu0Io8qDvgQlZ0dxv7hPNSFkt4214v"
 	)
-	python, _ := t.Load(Python)
+	_, python := t.Load(Python)
-	bash, _ := t.Load(Bash)
+	_, bash := t.Load(Bash)
 	return t.New("ninja-"+version, 0, []pkg.Artifact{
 		python,
 		bash,
@@ -39,9 +39,7 @@ cp ninja /work/system/bin/
 	))), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newNinja, &Metadata{
-		f: Toolchain.newNinja,
-
 		Name:        "ninja",
 		Description: "a small build system with a focus on speed",
 		Website:     "https://ninja-build.org/",

internal/rosa/nss.go

@@ -67,9 +67,7 @@ cp -r \
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newNSS, &Metadata{
-		f: Toolchain.newNSS,
-
 		Name:        "nss",
 		Description: "Network Security Services",
 		Website:     "https://firefox-source-docs.mozilla.org/security/nss/index.html",
@@ -120,9 +118,7 @@ buildcatrust \
 `), Unversioned
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newNSSCACert, &Metadata{
-		f: Toolchain.newNSSCACert,
-
 		Name:        "nss-cacert",
 		Description: "bundle of X.509 certificates of public Certificate Authorities",
 		Website:     "https://curl.se/docs/caextract.html",

internal/rosa/openssl.go

@@ -40,9 +40,7 @@ func (t Toolchain) newOpenSSL() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newOpenSSL, &Metadata{
-		f: Toolchain.newOpenSSL,
-
 		Name:        "openssl",
 		Description: "TLS/SSL and crypto library",
 		Website:     "https://www.openssl.org/",

internal/rosa/p11.go

@@ -23,9 +23,7 @@ func (t Toolchain) newP11Kit() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newP11Kit, &Metadata{
-		f: Toolchain.newP11Kit,
-
 		Name:        "p11-kit",
 		Description: "provides a way to load and enumerate PKCS#11 modules",
 		Website:     "https://p11-glue.freedesktop.org/p11-kit.html",

internal/rosa/pcre2.go

@@ -32,9 +32,7 @@ ln -s ../system/bin/toybox /bin/echo
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPCRE2, &Metadata{
-		f: Toolchain.newPCRE2,
-
 		Name:        "pcre2",
 		Description: "a set of C functions that implement regular expression pattern matching",
 		Website:     "https://pcre2project.github.io/pcre2/",

internal/rosa/perl.go

@@ -50,9 +50,7 @@ chmod +w /system/bin && rm -f /system/bin/ps # perl does not like toybox ps
 	}), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerl, &Metadata{
-		f: Toolchain.newPerl,
-
 		Name:        "perl",
 		Description: "The Perl Programming language",
 		Website:     "https://www.perl.org/",
@@ -100,9 +98,7 @@ func (t Toolchain) newPerlModuleBuild() (pkg.Artifact, string) {
 	), nil), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlModuleBuild, &Metadata{
-		f: Toolchain.newPerlModuleBuild,
-
 		Name:        "perl-Module::Build",
 		Description: "build and install Perl modules",
 		Website:     "https://metacpan.org/release/Module-Build",
@@ -154,9 +150,7 @@ func (t Toolchain) newPerlLocaleGettext() (pkg.Artifact, string) {
 	), nil), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlLocaleGettext, &Metadata{
-		f: Toolchain.newPerlLocaleGettext,
-
 		Name:        "perl-Locale::gettext",
 		Description: "message handling functions",
 		Website:     "https://metacpan.org/release/Locale-gettext",
@@ -178,9 +172,7 @@ func (t Toolchain) newPerlPodParser() (pkg.Artifact, string) {
 	), nil), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlPodParser, &Metadata{
-		f: Toolchain.newPerlPodParser,
-
 		Name:        "perl-Pod::Parser",
 		Description: "base class for creating POD filters and translators",
 		Website:     "https://metacpan.org/release/Pod-Parser",
@@ -202,9 +194,7 @@ func (t Toolchain) newPerlSGMLS() (pkg.Artifact, string) {
 	), nil), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlSGMLS, &Metadata{
-		f: Toolchain.newPerlSGMLS,
-
 		Name:        "perl-SGMLS",
 		Description: "class for postprocessing the output from the sgmls and nsgmls parsers",
 		Website:     "https://metacpan.org/release/RAAB/SGMLSpm-1.1",
@@ -240,9 +230,7 @@ func (t Toolchain) newPerlTermReadKey() (pkg.Artifact, string) {
 	), nil), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlTermReadKey, &Metadata{
-		f: Toolchain.newPerlTermReadKey,
-
 		Name:        "perl-Term::ReadKey",
 		Description: "a perl module for simple terminal control",
 		Website:     "https://metacpan.org/release/TermReadKey",
@@ -264,9 +252,7 @@ func (t Toolchain) newPerlTextCharWidth() (pkg.Artifact, string) {
 	), nil), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlTextCharWidth, &Metadata{
-		f: Toolchain.newPerlTextCharWidth,
-
 		Name:        "perl-Text::CharWidth",
 		Description: "get number of occupied columns of a string on terminal",
 		Website:     "https://metacpan.org/release/Text-CharWidth",
@@ -290,9 +276,7 @@ func (t Toolchain) newPerlTextWrapI18N() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlTextWrapI18N, &Metadata{
-		f: Toolchain.newPerlTextWrapI18N,
-
 		Name:        "perl-Text::WrapI18N",
 		Description: "line wrapping module",
 		Website:     "https://metacpan.org/release/Text-WrapI18N",
@@ -318,9 +302,7 @@ func (t Toolchain) newPerlMIMECharset() (pkg.Artifact, string) {
 	), nil), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlMIMECharset, &Metadata{
-		f: Toolchain.newPerlMIMECharset,
-
 		Name:        "perl-MIME::Charset",
 		Description: "Charset Information for MIME",
 		Website:     "https://metacpan.org/release/MIME-Charset",
@@ -344,9 +326,7 @@ func (t Toolchain) newPerlUnicodeLineBreak() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlUnicodeLineBreak, &Metadata{
-		f: Toolchain.newPerlUnicodeLineBreak,
-
 		Name:        "perl-Unicode::LineBreak",
 		Description: "String as Sequence of UAX #29 Grapheme Clusters",
 		Website:     "https://metacpan.org/release/Unicode-LineBreak",
@@ -372,9 +352,7 @@ func (t Toolchain) newPerlYAMLTiny() (pkg.Artifact, string) {
 	), nil), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlYAMLTiny, &Metadata{
-		f: Toolchain.newPerlYAMLTiny,
-
 		Name:        "perl-YAML::Tiny",
 		Description: "read/write YAML files with as little code as possible",
 		Website:     "https://metacpan.org/release/YAML-Tiny",
@@ -396,9 +374,7 @@ func (t Toolchain) newPerlTestCmd() (pkg.Artifact, string) {
 	), nil), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPerlTestCmd, &Metadata{
-		f: Toolchain.newPerlTestCmd,
-
 		Name:        "perl-Test::Cmd",
 		Description: "portable testing of commands and scripts",
 		Website:     "https://metacpan.org/release/Test-Cmd",

internal/rosa/pixman.go

@@ -19,9 +19,7 @@ func (t Toolchain) newPixman() (pkg.Artifact, string) {
 	}), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPixman, &Metadata{
-		f: Toolchain.newPixman,
-
 		Name:        "pixman",
 		Description: "a low-level software library for pixel manipulation",
 		Website:     "https://pixman.org/",

internal/rosa/pkg-config.go

@@ -24,9 +24,7 @@ func (t Toolchain) newPkgConfig() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPkgConfig, &Metadata{
-		f: Toolchain.newPkgConfig,
-
 		Name:        "pkg-config",
 		Description: "a helper tool used when compiling applications and libraries",
 		Website:     "https://pkgconfig.freedesktop.org/",

internal/rosa/procps.go

@@ -27,9 +27,7 @@ func (t Toolchain) newProcps() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newProcps, &Metadata{
-		f: Toolchain.newProcps,
-
 		Name:        "procps",
 		Description: "command line and full screen utilities for browsing procfs",
 		Website:     "https://gitlab.com/procps-ng/procps",

internal/rosa/python.go

@@ -88,9 +88,7 @@ index 19aea290b58..51603ba9510 100644
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newPython, &Metadata{
-		f: Toolchain.newPython,
-
 		Name:        "python",
 		Description: "the Python programming language interpreter",
 		Website:     "https://www.python.org/",
@@ -200,15 +198,13 @@ func (s *S) newPythonPackage(
 	build P, extra ...ArtifactH,
 ) {
 	name = "python-" + name
-	s.MustRegister(&Artifact{
+	s.mustRegister(func(t Toolchain) (pkg.Artifact, string) {
-		f: func(t Toolchain) (pkg.Artifact, string) {
 		return t.NewPackage(name, version, source, attrP, attr, slices.Concat(
 			P{Python},
 			extra,
 			build,
 		)...), version
-		},
+	}, &Metadata{
-
 		Name:        name,
 		Description: description,
 		Website:     website,
@@ -352,18 +348,16 @@ func init() {
 }
 
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(func(t Toolchain) (pkg.Artifact, string) {
-		f: func(t Toolchain) (pkg.Artifact, string) {
+		meta, source := t.Load(llvmSource)
-			source, version := t.Load(llvmSource)
+		return t.NewPackage("lit", meta.Version, source, nil, &PipHelper{
-			return t.NewPackage("lit", version, source, nil, &PipHelper{
 			Append: []string{"llvm", "utils", "lit"},
 			// already checked during llvm
 			SkipCheck: true,
 		},
 			PythonSetuptools,
-			), version
+		), meta.Version
-		},
+	}, &Metadata{
-
 		Name:        "lit",
 		Description: "a portable tool for executing LLVM and Clang style test suites",
 		Website:     "https://llvm.org/docs/CommandGuide/lit.html",

internal/rosa/qemu.go

@@ -94,9 +94,7 @@ EOF
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newQEMU, &Metadata{
-		f: Toolchain.newQEMU,
-
 		Name:        "qemu",
 		Description: "a generic and open source machine emulator and virtualizer",
 		Website:     "https://www.qemu.org/",

internal/rosa/rdfind.go

@@ -21,9 +21,7 @@ ln -s ../system/bin/toybox /bin/echo
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newRdfind, &Metadata{
-		f: Toolchain.newRdfind,
-
 		Name:        "rdfind",
 		Description: "a program that finds duplicate files",
 		Website:     "https://rdfind.pauldreik.se/",

internal/rosa/report.go

@@ -34,11 +34,10 @@ func WriteReport(msg message.Msg, w io.Writer, c *pkg.Cache) error {
 	)
 	t := native.Std()
 	for _, p := range native.Collect() {
-		meta := native.Get(p)
+		meta, a := t.MustLoad(p)
 		if meta == nil {
 			return errors.New("artifact " + p.String() + " in inconsistent state")
 		}
-		a, _ := t.MustLoad(p)
 		if _, ok := a.(pkg.FileArtifact); ok {
 			msg.Verbosef("skipping file artifact %s", meta.Name)
 			continue

internal/rosa/rosa.go

@@ -249,7 +249,7 @@ func (t Toolchain) New(
 		support = append(support, extra...)
 		support = append(support, cureEtc{})
 		if t.stage == stageEarly {
-			a, _ := t.Load(stage0Dist)
+			_, a := t.MustLoad(stage0Dist)
 			support = append(support, a)
 		} else {
 			support = append(support, t.S.New(_stageBusybox).New("gentoo", 0, nil, nil, nil, `
@@ -438,10 +438,11 @@ func (t Toolchain) appendHandle(a []pkg.Artifact, pv pa, p ArtifactH) []pkg.Arti
 	}
 	pv[p] = struct{}{}
 
-	for _, d := range t.MustGet(p).Dependencies {
+	meta, _ := t.MustLoad(p)
+	for _, d := range meta.Dependencies {
 		a = t.appendHandle(a, pv, d)
 	}
-	d, _ := t.Load(p)
+	_, d := t.MustLoad(p)
 	return append(a, d)
 }
 

internal/rosa/rosa_test.go

@@ -78,9 +78,8 @@ func TestCureAll(t *testing.T) {
 	t.Parallel()
 
 	for _, p := range rosa.Native().Collect() {
-		a, _ := rosa.Native().Std().MustLoad(p)
+		_, a := rosa.Native().Std().MustLoad(p)
-		meta := rosa.Native().MustGet(p)
+		t.Run(p.String(), func(t *testing.T) {
-		t.Run(meta.Name, func(t *testing.T) {
 			t.Parallel()
 
 			if pathname, _, err := cache.Cure(a); err != nil {

internal/rosa/rsync.go

@@ -27,9 +27,7 @@ func (t Toolchain) newRsync() (pkg.Artifact, string) {
 	}), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newRsync, &Metadata{
-		f: Toolchain.newRsync,
-
 		Name:        "rsync",
 		Description: "an open source utility that provides fast incremental file transfer",
 		Website:     "https://rsync.samba.org/",

internal/rosa/squashfs.go

@@ -42,9 +42,7 @@ func (t Toolchain) newSquashfsTools() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newSquashfsTools, &Metadata{
-		f: Toolchain.newSquashfsTools,
-
 		Name:        "squashfs-tools",
 		Description: "tools to create and extract Squashfs filesystems",
 		Website:     "https://github.com/plougher/squashfs-tools",

internal/rosa/stage0.go

@@ -5,8 +5,14 @@ import (
 	"hakurei.app/internal/pkg"
 )
 
-func (t Toolchain) newStage0() (pkg.Artifact, string) {
+func init() {
-	return t.New("rosa-stage0", 0, t.Append(nil,
+	meta := Metadata{
+		Name:        "rosa-stage0",
+		Description: "Rosa OS stage0 toolchain tarball for bootstrap",
+		Version:     Unversioned,
+	}
+	native.MustRegister(meta.Name, func(t Toolchain) (*Metadata, pkg.Artifact) {
+		return &meta, t.New("rosa-stage0", 0, t.Append(nil,
 			Bzip2,
 		), nil, nil, `
 umask 377
@@ -19,23 +25,19 @@ tar \
 			LLVM,
 			Mksh,
 			toyboxEarly,
-	)...)), Unversioned
+		)...))
-}
-func init() {
-	native.MustRegister(&Artifact{
-		f: Toolchain.newStage0,
-
-		Name:        "rosa-stage0",
-		Description: "Rosa OS stage0 toolchain tarball for bootstrap",
 	})
 }
 
 func init() {
-	const version = "20260504"
+	meta := Metadata{
-	native.MustRegister(&Artifact{
+		Name:        "stage0-dist",
-		f: func(t Toolchain) (pkg.Artifact, string) {
+		Description: "Rosa OS stage0 bootstrap seed",
-			return newTar(
+		Version:     "20260504",
-				"https://hakurei.app/seed/"+version+"/"+
+	}
+	native.MustRegister(meta.Name, func(t Toolchain) (*Metadata, pkg.Artifact) {
+		return &meta, newTar(
+			"https://hakurei.app/seed/"+meta.Version+"/"+
 				"stage0-"+t.triple()+".tar.bz2",
 			perArch[string]{
 				"amd64":   "IQjFDkiAVLo1XzflgMMiLP3gnVY2hhDMTzl-QqJDCQhcLQ3lLtRzjI5WCxGyW_lk",
@@ -43,11 +45,7 @@ func init() {
 				"riscv64": "Z2ODV0rIoo9iQRUIu35bsaOBeXc_9qQfGcyb2aGneatzNUJlXh5emSpEV2bOklUL",
 			}.unwrap(t.S),
 			pkg.TarBzip2,
-			), version
+		)
-		},
-
-		Name:        "stage0-dist",
-		Description: "Rosa OS stage0 bootstrap seed",
 	})
 }
 

internal/rosa/state.go

@@ -70,11 +70,9 @@ type (
 // P represents multiple [ArtifactH].
 type P []ArtifactH
 
-// Artifact is stage-agnostic immutable data with a deterministic resulting
+// Metadata is stage-agnostic immutable data around [Artifact] not directly
-// [pkg.Artifact]. It can be created natively or through evaluation.
+// representable in the resulting [pkg.Artifact].
-type Artifact struct {
+type Metadata struct {
-	f func(t Toolchain) (a pkg.Artifact, version string)
-
 	// Unique package name.
 	Name string `json:"name"`
 	// Short user-facing description.
@@ -85,6 +83,8 @@ type Artifact struct {
 	// Runtime dependencies.
 	Dependencies P `json:"dependencies"`
 
+	// Package version.
+	Version string `json:"version"`
 	// Project identifier on [Anitya].
 	//
 	// [Anitya]: https://release-monitoring.org/
@@ -98,7 +98,7 @@ type Artifact struct {
 }
 
 // GetLatest returns the latest version described by v.
-func (meta *Artifact) GetLatest(v *Versions) string {
+func (meta *Metadata) GetLatest(v *Versions) string {
 	if meta.latest != nil {
 		return meta.latest(v)
 	}
@@ -134,7 +134,7 @@ func (v *Versions) getStable() string {
 }
 
 // GetVersions returns versions fetched from Anitya.
-func (meta *Artifact) GetVersions(ctx context.Context) (*Versions, error) {
+func (meta *Metadata) GetVersions(ctx context.Context) (*Versions, error) {
 	if meta.ID == 0 {
 		return nil, UnpopulatedIDError{}
 	}
@@ -160,10 +160,13 @@ func (meta *Artifact) GetVersions(ctx context.Context) (*Versions, error) {
 	return &v, errors.Join(err, resp.Body.Close())
 }
 
-// A cachedArtifact holds [pkg.Artifact] and its corresponding version string.
+// Artifact is a lazily initialised [pkg.Artifact] with associated [Metadata].
+type Artifact func(t Toolchain) (meta *Metadata, a pkg.Artifact)
+
+// A cachedArtifact caches satisfied [Artifact].
 type cachedArtifact struct {
+	meta *Metadata
 	a    pkg.Artifact
-	v string
 }
 
 const (
@@ -242,20 +245,20 @@ func (s *S) DropCaches(targetArch string, flags int) {
 	}
 }
 
-// Get returns the address of the named [Artifact].
+// get returns the named [Artifact].
-func (s *S) Get(handle ArtifactH) (meta *Artifact) {
+func (s *S) get(handle ArtifactH) (f Artifact) {
 	s.wantsArch()
 	v, ok := s.artifacts.Load(handle)
 	if ok {
-		meta = v.(*Artifact)
+		f = v.(Artifact)
 	}
 	return
 }
 
-// MustGet is like Get, but panics if the named [Artifact] is not registered.
+// mustGet is like get, but panics if the named [Artifact] is not registered.
-func (s *S) MustGet(handle ArtifactH) (meta *Artifact) {
+func (s *S) mustGet(handle ArtifactH) (f Artifact) {
-	meta = s.Get(handle)
+	f = s.get(handle)
-	if meta == nil {
+	if f == nil {
 		panic(HandleError(handle))
 	}
 	return
@@ -282,8 +285,8 @@ func (e LoadError) Error() string {
 	return "cannot load " + strconv.Quote(e.Handle.String()) + ": " + e.Err.Error()
 }
 
-// Load returns the resulting [pkg.Artifact] of [ArtifactH].
+// Load satisfies an [Artifact] referred to by an [ArtifactH].
-func (t Toolchain) Load(handle ArtifactH) (pkg.Artifact, string) {
+func (t Toolchain) Load(handle ArtifactH) (*Metadata, pkg.Artifact) {
 	defer func() {
 		r := recover()
 		if r == nil {
@@ -305,36 +308,36 @@ func (t Toolchain) Load(handle ArtifactH) (pkg.Artifact, string) {
 	e, ok := t.c[t.stage].Load(handle)
 	if ok {
 		r := e.(cachedArtifact)
-		return r.a, r.v
+		return r.meta, r.a
 	}
 
-	meta := t.Get(handle)
+	f := t.get(handle)
-	if meta == nil {
+	if f == nil {
-		return nil, ""
+		return nil, nil
 	}
 	var r cachedArtifact
-	r.a, r.v = meta.f(t)
+	r.meta, r.a = f(t)
 	t.c[t.stage].Store(handle, r)
-	return r.a, r.v
+	return r.meta, r.a
 }
 
 // MustLoad is like Load, but panics if the named [Artifact] is not registered.
-func (t Toolchain) MustLoad(handle ArtifactH) (pkg.Artifact, string) {
+func (t Toolchain) MustLoad(handle ArtifactH) (*Metadata, pkg.Artifact) {
-	a, version := t.Load(handle)
+	meta, a := t.Load(handle)
-	if a == nil {
+	if meta == nil {
 		panic(HandleError(handle))
 	}
-	return a, version
+	return meta, a
 }
 
 // Register arranges for a new [Artifact] to be cured under s. It returns false
 // if another [Artifact] is already registered under the same name.
-func (s *S) Register(meta *Artifact) bool {
+func (s *S) Register(name string, f Artifact) bool {
-	if meta.Name == "" {
+	if name == "" {
 		return false
 	}
-	p := ArtifactH(unique.Make(meta.Name))
+	p := ArtifactH(unique.Make(name))
-	_, ok := s.artifacts.LoadOrStore(p, meta)
+	_, ok := s.artifacts.LoadOrStore(p, f)
 	if !ok {
 		s.artifactCount.Add(1)
 	}
@@ -346,16 +349,34 @@ func (s *S) Register(meta *Artifact) bool {
 type RegisterError ArtifactH
 
 func (e RegisterError) Error() string {
+	if ArtifactH(e).String() == "" {
+		return "attempting to register invalid name"
+	}
 	return "attempting to register " + strconv.Quote(ArtifactH(e).String()) + " twice"
 }
 
 // MustRegister is like Register, but panics if registration fails.
-func (s *S) MustRegister(meta *Artifact) {
+func (s *S) MustRegister(name string, f Artifact) {
-	if !s.Register(meta) {
+	if !s.Register(name, f) {
-		panic(RegisterError(H(meta.Name)))
+		panic(RegisterError(H(name)))
 	}
 }
 
+// mustRegister registers an [Artifact] with the old function signature.
+//
+// Deprecated: Artifacts should be migrated to Register.
+func (s *S) mustRegister(
+	f func(t Toolchain) (pkg.Artifact, string),
+	meta *Metadata,
+) {
+	s.MustRegister(meta.Name, func(t Toolchain) (*Metadata, pkg.Artifact) {
+		v := *meta
+		a, version := f(t)
+		v.Version = version
+		return &v, a
+	})
+}
+
 // Count returns the number of [Artifact] registered to s.
 func (s *S) Count() int {
 	return int(s.artifactCount.Load())
@@ -567,7 +588,7 @@ func (ctx *evalContext) f(
 		return unique.Make(azalea.Ident(name))
 	}
 
-	meta := Artifact{Name: string(name)}
+	meta := Metadata{Name: string(name)}
 	var (
 		attr    PackageAttr
 		patches []string
@@ -575,7 +596,6 @@ func (ctx *evalContext) f(
 		early   bool
 
 		anitya  int64
-		version string
 		sourceA any
 		helper  Helper
 
@@ -584,11 +604,9 @@ func (ctx *evalContext) f(
 	if err = args.Apply(map[unique.Handle[azalea.Ident]]any{
 		k("description"): &meta.Description,
 		k("website"):     &meta.Website,
+		k("version"):     &meta.Version,
 		k("anitya"):      &anitya,
 
-		k("version"): &version,
-		k("source"):  &sourceA,
-
 		k("writable"):    &attr.Writable,
 		k("chmod"):       &attr.Chmod,
 		k("enterSource"): &attr.EnterSource,
@@ -598,6 +616,7 @@ func (ctx *evalContext) f(
 		k("exclusive"):   &excl,
 		k("toyboxEarly"): &early,
 
+		k("source"):  &sourceA,
 		k("exec"):    &helper,
 		k("inputs"):  &inputs,
 		k("runtime"): &runtimes,
@@ -630,7 +649,7 @@ func (ctx *evalContext) f(
 	}
 
 	meta.ID = int(anitya)
-	meta.f = func(t Toolchain) (pkg.Artifact, string) {
+	v = Artifact(func(t Toolchain) (*Metadata, pkg.Artifact) {
 		var source pkg.Artifact
 		switch p := sourceA.(type) {
 		case pkg.Artifact:
@@ -646,17 +665,15 @@ func (ctx *evalContext) f(
 			})
 		}
 
-		return t.NewPackage(
+		return &meta, t.NewPackage(
 			meta.Name,
-			version,
+			meta.Version,
 			source,
 			&attr,
 			helper,
 			inputsH...,
-		), version
+		)
-	}
+	})
-
-	v = meta
 	set = true
 	return
 }
@@ -686,13 +703,13 @@ func (s *S) Evaluate(r io.Reader, b fs.FS) error {
 
 	ctx := evalContext{b}
 	for _, f := range pending {
-		meta, set, err := azalea.Evaluate[Artifact](ctx.f, s.getS(), *f)
+		lf, set, err := azalea.Evaluate[Artifact](ctx.f, s.getS(), *f)
 		if err != nil {
 			return err
 		} else if !set {
 			return errors.New("unexpected unset")
 		}
-		if !s.Register(&meta) {
+		if !s.Register(string(f.Ident), lf) {
 			return RegisterError(H(string(f.Ident)))
 		}
 	}

internal/rosa/state_test.go

@@ -10,7 +10,7 @@ func TestLoad(t *testing.T) {
 	t.Parallel()
 
 	for _, p := range rosa.Native().Collect() {
-		t.Run(rosa.Native().MustGet(p).Name, func(t *testing.T) {
+		t.Run(p.String(), func(t *testing.T) {
 			t.Parallel()
 
 			rosa.Native().Std().MustLoad(p)

internal/rosa/strace.go

@@ -37,9 +37,7 @@ sed -i 's/unsigned int msg_len;$/uint32_t msg_len;/g' \
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newStrace, &Metadata{
-		f: Toolchain.newStrace,
-
 		Name:        "strace",
 		Description: "a diagnostic, debugging and instructional userspace utility",
 		Website:     "https://strace.io/",

internal/rosa/tamago.go

@@ -40,9 +40,7 @@ rm \
 	))), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newTamaGo, &Metadata{
-		f: Toolchain.newTamaGo,
-
 		Name:        "tamago",
 		Description: "a Go toolchain extended with support for bare metal execution",
 		Website:     "https://github.com/usbarmory/tamago-go",

internal/rosa/toybox.go

@@ -59,11 +59,9 @@ ln -s ../../system/bin/env /work/usr/bin
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(func(t Toolchain) (pkg.Artifact, string) {
-		f: func(t Toolchain) (pkg.Artifact, string) {
 		return t.newToybox("", "")
-		},
+	}, &Metadata{
-
 		Name:        "toybox",
 		Description: "many common Linux command line utilities",
 		Website:     "https://landley.net/toybox/",
@@ -71,8 +69,7 @@ func init() {
 		ID: 13818,
 	})
 
-	native.MustRegister(&Artifact{
+	native.mustRegister(func(t Toolchain) (pkg.Artifact, string) {
-		f: func(t Toolchain) (pkg.Artifact, string) {
 		return t.newToybox("-early", `
 echo '
 CONFIG_EXPR=y
@@ -81,8 +78,7 @@ CONFIG_AWK=y
 CONFIG_DIFF=y
 ' >> .config
 `)
-		},
+	}, &Metadata{
-
 		Name:        "toybox-early",
 		Description: "a build of toybox with unfinished tools enabled to break dependency loops",
 		Website:     "https://landley.net/toybox/",

internal/rosa/unzip.go

@@ -32,9 +32,7 @@ mv unzip /work/system/bin/
 	))), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newUnzip, &Metadata{
-		f: Toolchain.newUnzip,
-
 		Name:        "unzip",
 		Description: "portable compression/archiver utilities",
 		Website:     "https://infozip.sourceforge.net/",

internal/rosa/util-linux.go

@@ -47,9 +47,7 @@ ln -s ../system/bin/bash /bin/
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newUtilLinux, &Metadata{
-		f: Toolchain.newUtilLinux,
-
 		Name:        "util-linux",
 		Description: "a random collection of Linux utilities",
 		Website:     "https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git",

internal/rosa/vim.go

@@ -29,9 +29,7 @@ func (t Toolchain) newVIM() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newVIM, &Metadata{
-		f: Toolchain.newVIM,
-
 		Name:        "vim",
 		Description: "a greatly improved version of the good old UNIX editor Vi",
 		Website:     "https://www.vim.org",

internal/rosa/wayland.go

@@ -35,9 +35,7 @@ echo 'int main(){}' > tests/sanity-test.c
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newWayland, &Metadata{
-		f: Toolchain.newWayland,
-
 		Name:        "wayland",
 		Description: "core Wayland window system code and protocol",
 		Website:     "https://wayland.freedesktop.org/",
@@ -121,9 +119,7 @@ GitLab
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newWaylandProtocols, &Metadata{
-		f: Toolchain.newWaylandProtocols,
-
 		Name:        "wayland-protocols",
 		Description: "Additional standard Wayland protocols",
 		Website:     "https://wayland.freedesktop.org/",

internal/rosa/x.go

@@ -15,9 +15,7 @@ func (t Toolchain) newUtilMacros() (pkg.Artifact, string) {
 	), nil, (*MakeHelper)(nil)), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newUtilMacros, &Metadata{
-		f: Toolchain.newUtilMacros,
-
 		Name:        "util-macros",
 		Description: "X.Org Autotools macros",
 		Website:     "https://xorg.freedesktop.org/",
@@ -47,9 +45,7 @@ func (t Toolchain) newLibxtrans() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxtrans, &Metadata{
-		f: Toolchain.newLibxtrans,
-
 		Name:        "libxtrans",
 		Description: "X Window System Protocols Transport layer shared code",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxtrans",
@@ -78,9 +74,7 @@ func (t Toolchain) newXorgProto() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newXorgProto, &Metadata{
-		f: Toolchain.newXorgProto,
-
 		Name:        "xorgproto",
 		Description: "X Window System unified protocol definitions",
 		Website:     "https://gitlab.freedesktop.org/xorg/proto/xorgproto",
@@ -112,9 +106,7 @@ func (t Toolchain) newLibXau() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibXau, &Metadata{
-		f: Toolchain.newLibXau,
-
 		Name:        "libXau",
 		Description: "functions for handling Xauthority files and entries",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxau",
@@ -141,9 +133,7 @@ func (t Toolchain) newXCBProto() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newXCBProto, &Metadata{
-		f: Toolchain.newXCBProto,
-
 		Name:        "xcb-proto",
 		Description: "XML-XCB protocol descriptions used by libxcb for the X11 protocol & extensions",
 		Website:     "https://gitlab.freedesktop.org/xorg/proto/xcbproto",
@@ -170,9 +160,7 @@ func (t Toolchain) newXCB() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newXCB, &Metadata{
-		f: Toolchain.newXCB,
-
 		Name:        "xcb",
 		Description: "The X protocol C-language Binding",
 		Website:     "https://xcb.freedesktop.org/",
@@ -202,9 +190,7 @@ func (t Toolchain) newLibxcbUtilKeysyms() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxcbUtilKeysyms, &Metadata{
-		f: Toolchain.newLibxcbUtilKeysyms,
-
 		Name:        "libxcb-util-keysyms",
 		Description: "standard X key constants and conversion to/from keycodes",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxcb-keysyms",
@@ -233,9 +219,7 @@ func (t Toolchain) newLibxcbUtilImage() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxcbUtilImage, &Metadata{
-		f: Toolchain.newLibxcbUtilImage,
-
 		Name:        "libxcb-util-image",
 		Description: "XCB port of Xlib's XImage and XShmImage functions",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxcb-image",
@@ -265,9 +249,7 @@ func (t Toolchain) newLibxcbUtilWM() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxcbUtilWM, &Metadata{
-		f: Toolchain.newLibxcbUtilWM,
-
 		Name:        "libxcb-util-wm",
 		Description: "XCB client and window-manager helpers for ICCCM & EWMH",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxcb-wm",
@@ -298,9 +280,7 @@ func (t Toolchain) newLibxcbUtil() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxcbUtil, &Metadata{
-		f: Toolchain.newLibxcbUtil,
-
 		Name:        "libxcb-util",
 		Description: "XCB utility libraries",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxcb-util",
@@ -331,9 +311,7 @@ func (t Toolchain) newLibxcbRenderUtil() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxcbRenderUtil, &Metadata{
-		f: Toolchain.newLibxcbRenderUtil,
-
 		Name:        "libxcb-render-util",
 		Description: "XCB convenience functions for the Render extension",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxcb-render-util",
@@ -375,9 +353,7 @@ func (t Toolchain) newLibX11() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibX11, &Metadata{
-		f: Toolchain.newLibX11,
-
 		Name:        "libX11",
 		Description: `Core X11 protocol client library (aka "Xlib")`,
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libx11",
@@ -412,9 +388,7 @@ func (t Toolchain) newLibXext() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibXext, &Metadata{
-		f: Toolchain.newLibXext,
-
 		Name:        "libXext",
 		Description: "Xlib-based library for common extensions to the X11 protocol",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxext",
@@ -450,9 +424,7 @@ func (t Toolchain) newLibXfixes() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibXfixes, &Metadata{
-		f: Toolchain.newLibXfixes,
-
 		Name:        "libXfixes",
 		Description: "Xlib-based library for the XFIXES Extension",
 		Website:     "https://www.freedesktop.org/wiki/Software/FixesExt/",
@@ -487,9 +459,7 @@ func (t Toolchain) newLibXrender() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibXrender, &Metadata{
-		f: Toolchain.newLibXrender,
-
 		Name:        "libXrender",
 		Description: "Xlib library for the Render Extension to the X11 protocol",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxrender",
@@ -524,9 +494,7 @@ func (t Toolchain) newLibxshmfence() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxshmfence, &Metadata{
-		f: Toolchain.newLibxshmfence,
-
 		Name:        "libxshmfence",
 		Description: "shared memory 'SyncFence' synchronization primitive",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxshmfence",
@@ -558,9 +526,7 @@ func (t Toolchain) newLibXxf86vm() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibXxf86vm, &Metadata{
-		f: Toolchain.newLibXxf86vm,
-
 		Name:        "libXxf86vm",
 		Description: "Xlib-based library for the XFree86-VidMode X extension",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxxf86vm",
@@ -597,9 +563,7 @@ func (t Toolchain) newLibXrandr() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibXrandr, &Metadata{
-		f: Toolchain.newLibXrandr,
-
 		Name:        "libXrandr",
 		Description: "Xlib Resize, Rotate and Reflection (RandR) extension library",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxrandr",
@@ -634,9 +598,7 @@ func (t Toolchain) newFontUtil() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newFontUtil, &Metadata{
-		f: Toolchain.newFontUtil,
-
 		Name:        "font-util",
 		Description: "X.Org font package creation/installation utilities",
 		Website:     "https://gitlab.freedesktop.org/xorg/font/util",
@@ -668,9 +630,7 @@ func (t Toolchain) newLibfontenc() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibfontenc, &Metadata{
-		f: Toolchain.newLibfontenc,
-
 		Name:        "libfontenc",
 		Description: "X font encoding library",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libfontenc",
@@ -694,9 +654,7 @@ func (t Toolchain) newLibxkbfile() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxkbfile, &Metadata{
-		f: Toolchain.newLibxkbfile,
-
 		Name:        "libxkbfile",
 		Description: "XKB file handling routines",
 		Website:     "http://www.x.org/wiki/XKB",
@@ -732,9 +690,7 @@ func (t Toolchain) newXkbcomp() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newXkbcomp, &Metadata{
-		f: Toolchain.newXkbcomp,
-
 		Name:        "xkbcomp",
 		Description: "XKB keyboard description compiler",
 		Website:     "http://www.x.org/wiki/XKB",
@@ -772,9 +728,7 @@ func (t Toolchain) newLibXfont2() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibXfont2, &Metadata{
-		f: Toolchain.newLibXfont2,
-
 		Name:        "libXfont2",
 		Description: "X font handling library for server & utilities",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxfont",
@@ -801,9 +755,7 @@ func (t Toolchain) newLibxcvt() (pkg.Artifact, string) {
 	), nil, (*MesonHelper)(nil)), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibxcvt, &Metadata{
-		f: Toolchain.newLibxcvt,
-
 		Name:        "libxcvt",
 		Description: "VESA CVT standard timing modeline generation library & utility",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxcvt",
@@ -834,9 +786,7 @@ func (t Toolchain) newLibXdmcp() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibXdmcp, &Metadata{
-		f: Toolchain.newLibXdmcp,
-
 		Name:        "libXdmcp",
 		Description: "X Display Manager Control Protocol library",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libxdmcp",
@@ -860,9 +810,7 @@ func (t Toolchain) newXkeyboardConfig() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newXkeyboardConfig, &Metadata{
-		f: Toolchain.newXkeyboardConfig,
-
 		Name:        "xkeyboard-config",
 		Description: "the non-arch keyboard configuration database for X Window",
 		Website:     "https://www.freedesktop.org/wiki/Software/XKeyboardConfig/",
@@ -888,9 +836,7 @@ func (t Toolchain) newLibpciaccess() (pkg.Artifact, string) {
 	}), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newLibpciaccess, &Metadata{
-		f: Toolchain.newLibpciaccess,
-
 		Name:        "libpciaccess",
 		Description: "generic PCI access library",
 		Website:     "https://gitlab.freedesktop.org/xorg/lib/libpciaccess",
@@ -955,9 +901,7 @@ func (t Toolchain) newXserver() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newXserver, &Metadata{
-		f: Toolchain.newXserver,
-
 		Name:        "xserver",
 		Description: "X server",
 		Website:     "https://gitlab.freedesktop.org/xorg/xserver",

internal/rosa/xz.go

@@ -18,9 +18,7 @@ func (t Toolchain) newXZ() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newXZ, &Metadata{
-		f: Toolchain.newXZ,
-
 		Name:        "xz",
 		Description: "XZ Utils",
 		Website:     "https://tukaani.org/xz/",

internal/rosa/zlib.go

@@ -28,9 +28,7 @@ func (t Toolchain) newZlib() (pkg.Artifact, string) {
 	}), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newZlib, &Metadata{
-		f: Toolchain.newZlib,
-
 		Name:        "zlib",
 		Description: "lossless data-compression library",
 		Website:     "https://zlib.net/",

internal/rosa/zstd.go

@@ -29,9 +29,7 @@ ZSTD_BIN=/cure/programs/zstd /usr/src/zstd/tests/playTests.sh
 	), version
 }
 func init() {
-	native.MustRegister(&Artifact{
+	native.mustRegister(Toolchain.newZstd, &Metadata{
-		f: Toolchain.newZstd,
-
 		Name:        "zstd",
 		Description: "a fast compression algorithm",
 		Website:     "https://facebook.github.io/zstd/",