internal/rosa/llvm: make source independently available

This is unfortunately still required, due to the monorepo nature of LLVM.

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

internal/rosa/all.go

@@ -171,7 +171,8 @@ const (
 	// PresetUnexportedStart is the first unexported preset.
 	PresetUnexportedStart
 
-	buildcatrust = iota - 1
+	llvmSource = iota - 1
+	buildcatrust
 	utilMacros
 
 	// Musl is a standalone libc that does not depend on the toolchain.

internal/rosa/llvm.go

@@ -9,11 +9,6 @@ import (
 )
 
 func (t Toolchain) newLLVM() (pkg.Artifact, string) {
-	const (
-		version  = "22.1.4"
-		checksum = "Bk3t-tV5sD5T0bqefFMcLeFuAwXnhFipywZmqst5hAZs97QQWGKB_5XyAFjj5tDB"
-	)
-
 	cache := []KV{
 		{"CMAKE_BUILD_TYPE", "Release"},
 
@@ -127,11 +122,8 @@ func (t Toolchain) newLLVM() (pkg.Artifact, string) {
 		}...)
 	}
 
-	return t.NewPackage("llvm", version, t.NewPatchedSource("llvm", version, newFromGitHub(
-		"llvm/llvm-project",
-		"llvmorg-"+version,
-		checksum,
-	), true, llvmPatches...), nil, &CMakeHelper{
+	version := t.Version(llvmSource)
+	return t.NewPackage("llvm", version, t.Load(llvmSource), nil, &CMakeHelper{
 		Append: []string{"llvm"},
 
 		Cache: cache,
@@ -174,6 +166,26 @@ ninja ` + jobsFlagE + ` check-all
 	), version
 }
 func init() {
+	const (
+		version  = "22.1.4"
+		checksum = "Bk3t-tV5sD5T0bqefFMcLeFuAwXnhFipywZmqst5hAZs97QQWGKB_5XyAFjj5tDB"
+	)
+
+	artifactsM[llvmSource] = Metadata{
+		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,
+	}
+
 	artifactsM[LLVM] = Metadata{
 		f: Toolchain.newLLVM,
 
@@ -186,7 +198,5 @@ func init() {
 			Zstd,
 			Musl,
 		},
-
-		ID: 1830,
 	}
 }