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/libxslt.go

@@ -2,12 +2,12 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newLibxslt() (pkg.Artifact, string) {
+func (t Toolchain) newLibxslt(s *S) (pkg.Artifact, string) {
 	const (
 		version  = "1.1.45"
 		checksum = "67ks7v8od2oWaEGf23Sst_Xbn_8brQyolQjqxPoO-lK35k_WJhi2Px5JJgbk-nfn"
 	)
-	return t.NewPackage("libxslt", version, newFromGitLab(
+	return s.NewPackage(t, "libxslt", version, newFromGitLab(
 		"gitlab.gnome.org",
 		"GNOME/libxslt",
 		"v"+version, checksum,
@@ -26,7 +26,7 @@ func (t Toolchain) newLibxslt() (pkg.Artifact, string) {
 	), version
 }
 func init() {
-	artifactsM[Libxslt] = Metadata{
+	native.MustRegister(&Artifact{
 		f: Toolchain.newLibxslt,
 
 		Name:        "libxslt",
@@ -38,5 +38,5 @@ func init() {
 		},
 
 		ID: 13301,
-	}
+	})
 }