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/libgd.go

@@ -2,12 +2,12 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newLibgd() (pkg.Artifact, string) {
+func (t Toolchain) newLibgd(s *S) (pkg.Artifact, string) {
 	const (
 		version  = "2.3.3"
 		checksum = "8T-sh1_FJT9K9aajgxzh8ot6vWIF-xxjcKAHvTak9MgGUcsFfzP8cAvvv44u2r36"
 	)
-	return t.NewPackage("libgd", version, newFromGitHubRelease(
+	return s.NewPackage(t, "libgd", version, newFromGitHubRelease(
 		"libgd/libgd",
 		"gd-"+version,
 		"libgd-"+version+".tar.gz", checksum,
@@ -24,7 +24,7 @@ mkdir /dev/shm/gd
 	), version
 }
 func init() {
-	artifactsM[Libgd] = Metadata{
+	native.MustRegister(&Artifact{
 		f: Toolchain.newLibgd,
 
 		Name:        "libgd",
@@ -36,5 +36,5 @@ func init() {
 		},
 
 		ID: 880,
-	}
+	})
 }