internal/rosa/musl: migrate to make helper

This is much cleaner and eliminates the early ugliness.

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

internal/rosa/llvm.go

@@ -246,11 +246,8 @@ func (t Toolchain) newLLVM() (musl, compilerRT, runtimes, clang pkg.Artifact) {
 			{"COMPILER_RT_BUILD_XRAY", "OFF"},
 		},
 		append: []string{"compiler-rt"},
-		extra: []pkg.Artifact{t.NewMusl(&MuslAttr{
-			Headers: true,
-			Env: []string{
-				"CC=clang",
-			},
+		extra: []pkg.Artifact{t.newMusl(true, []string{
+			"CC=clang",
 		})},
 		script: `
 mkdir -p "${ROSA_INSTALL_PREFIX}/lib/clang/21/lib/"
@@ -267,18 +264,15 @@ ln -s \
 `,
 	})
 
-	musl = t.NewMusl(&MuslAttr{
-		Extra: []pkg.Artifact{compilerRT},
-		Env: stage0ExclConcat(t, []string{
-			"CC=clang",
-			"LIBCC=/system/lib/clang/21/lib/" +
-				triplet() + "/libclang_rt.builtins.a",
-			"AR=ar",
-			"RANLIB=ranlib",
-		},
-			"LDFLAGS="+earlyLDFLAGS(false),
-		),
-	})
+	musl = t.newMusl(false, stage0ExclConcat(t, []string{
+		"CC=clang",
+		"LIBCC=/system/lib/clang/21/lib/" +
+			triplet() + "/libclang_rt.builtins.a",
+		"AR=ar",
+		"RANLIB=ranlib",
+	},
+		"LDFLAGS="+earlyLDFLAGS(false),
+	), compilerRT)
 
 	runtimes = t.newLLVMVariant("runtimes", &llvmAttr{
 		env: stage0ExclConcat(t, []string{},

internal/rosa/musl.go

@@ -1,34 +1,24 @@
 package rosa
 
-import (
-	"slices"
+import "hakurei.app/internal/pkg"
 
-	"hakurei.app/internal/pkg"
-)
-
-// MuslAttr holds the attributes that will be applied to musl.
-type MuslAttr struct {
-	// Install headers only.
-	Headers bool
-	// Environment variables concatenated with defaults.
-	Env []string
-	// Dependencies concatenated with defaults.
-	Extra []pkg.Artifact
-}
-
-// NewMusl returns a [pkg.Artifact] containing an installation of musl libc.
-func (t Toolchain) NewMusl(attr *MuslAttr) pkg.Artifact {
+func (t Toolchain) newMusl(
+	headers bool,
+	env []string,
+	extra ...pkg.Artifact,
+) pkg.Artifact {
 	const (
 		version  = "1.2.5"
 		checksum = "y6USdIeSdHER_Fw2eT2CNjqShEye85oEg2jnOur96D073ukmIpIqDOLmECQroyDb"
 	)
 
-	if attr == nil {
-		attr = new(MuslAttr)
-	}
+	name := "musl"
+	attr := MakeAttr{
+		OmitDefaults: true,
+		SkipCheck:    true,
 
-	target := "install"
-	script := `
+		Env: env,
+		Script: `
 mkdir -p /work/system/bin
 COMPAT_LINKER_NAME="ld-musl-` + linuxArch() + `.so.1"
 ln -vs ../lib/libc.so /work/system/bin/linker
@@ -36,29 +26,23 @@ ln -vs ../lib/libc.so /work/system/bin/ldd
 ln -vs libc.so "/work/system/lib/${COMPAT_LINKER_NAME}"
 rm -v "/work/lib/${COMPAT_LINKER_NAME}"
 rmdir -v /work/lib
-`
-	if attr.Headers {
-		target = "install-headers"
-		script = ""
+`,
 	}
 
-	return t.New("musl-"+version, 0, stage0Concat(t, attr.Extra,
-		t.Load(Make),
-		t.Load(Coreutils),
-	), nil, slices.Concat([]string{
-		"ROSA_MUSL_TARGET=" + target,
-	}, attr.Env), `
-cd "$(mktemp -d)"
-/usr/src/musl/configure \
-	--prefix=/system \
-	--target="${ROSA_TRIPLE}"
-make "-j$(nproc)" DESTDIR=/work "${ROSA_MUSL_TARGET}"
-`+script, pkg.Path(AbsUsrSrc.Append("musl"), false, t.NewPatchedSource(
+	if headers {
+		name += "-headers"
+		attr.ScriptInstall = "make DESTDIR=/work install-headers"
+		attr.Script = ""
+	}
+
+	return t.NewViaMake(name, version, t.NewPatchedSource(
 		// expected to be writable in copies
 		"musl", version, pkg.NewHTTPGetTar(
 			nil, "https://musl.libc.org/releases/musl-"+version+".tar.gz",
 			mustDecode(checksum),
 			pkg.TarGzip,
 		), false,
-	)))
+	), &attr, stage0Concat(t, extra,
+		t.Load(Coreutils),
+	)...)
 }