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/libconfig.go

@@ -2,12 +2,12 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newLibconfig() (pkg.Artifact, string) {
+func (t Toolchain) newLibconfig(s *S) (pkg.Artifact, string) {
 	const (
 		version  = "1.8.2"
 		checksum = "fD32hjeAZuTz98g6WYHRwsxphrgrEFqxi5Z1jlJemPckPBfxpS3i5HgshAuA6vmT"
 	)
-	return t.NewPackage("libconfig", version, newFromGitHub(
+	return s.NewPackage(t, "libconfig", version, newFromGitHub(
 		"hyperrealm/libconfig",
 		"v"+version,
 		checksum,
@@ -38,7 +38,7 @@ index eba7eae..f916d2e 100644
 	}, (*CMakeHelper)(nil)), version
 }
 func init() {
-	artifactsM[Libconfig] = Metadata{
+	native.MustRegister(&Artifact{
 		f: Toolchain.newLibconfig,
 
 		Name:        "libconfig",
@@ -46,5 +46,5 @@ func init() {
 		Website:     "https://hyperrealm.github.io/libconfig/",
 
 		ID: 1580,
-	}
+	})
 }