internal/rosa: key metadata by string

For upcoming azalea integration. The API is quite ugly right now to ease migration.

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

internal/rosa/fakeroot.go

@@ -2,12 +2,12 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newFakeroot() (pkg.Artifact, string) {
+func (t Toolchain) newFakeroot(s *S) (pkg.Artifact, string) {
 	const (
 		version  = "1.37.2"
 		checksum = "4ve-eDqVspzQ6VWDhPS0NjW3aSenBJcPAJq_BFT7OOFgUdrQzoTBxZWipDAGWxF8"
 	)
-	return t.NewPackage("fakeroot", version, newFromGitLab(
+	return s.NewPackage(t, "fakeroot", version, newFromGitLab(
 		"salsa.debian.org",
 		"clint/fakeroot",
 		"upstream/"+version,
@@ -46,7 +46,7 @@ index f135ad9..85c784c 100644
 	), version
 }
 func init() {
-	artifactsM[Fakeroot] = Metadata{
+	native.MustRegister(&Artifact{
 		f: Toolchain.newFakeroot,
 
 		Name:        "fakeroot",
@@ -54,5 +54,5 @@ func init() {
 		Website:     "https://salsa.debian.org/clint/fakeroot",
 
 		ID: 12048,
-	}
+	})
 }