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/qemu.go

@@ -2,12 +2,12 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newQEMU() (pkg.Artifact, string) {
+func (t Toolchain) newQEMU(s *S) (pkg.Artifact, string) {
 	const (
 		version  = "11.0.0"
 		checksum = "C64gdi_Tkdg2fTwD9ERxtWGcf8vNn_6UvczW0c-x0KW1NZtd3NbEOIrlDhYGn15n"
 	)
-	return t.NewPackage("qemu", version, newTar(
+	return s.NewPackage(t, "qemu", version, newTar(
 		"https://download.qemu.org/qemu-"+version+".tar.bz2",
 		checksum,
 		pkg.TarBzip2,
@@ -94,7 +94,7 @@ EOF
 	), version
 }
 func init() {
-	artifactsM[QEMU] = Metadata{
+	native.MustRegister(&Artifact{
 		f: Toolchain.newQEMU,
 
 		Name:        "qemu",
@@ -107,5 +107,5 @@ func init() {
 		},
 
 		ID: 13607,
-	}
+	})
 }