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/libseccomp.go

@@ -2,12 +2,12 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newLibseccomp() (pkg.Artifact, string) {
+func (t Toolchain) newLibseccomp(s *S) (pkg.Artifact, string) {
 	const (
 		version  = "2.6.0"
 		checksum = "mMu-iR71guPjFbb31u-YexBaanKE_nYPjPux-vuBiPfS_0kbwJdfCGlkofaUm-EY"
 	)
-	return t.NewPackage("libseccomp", version, newFromGitHubRelease(
+	return s.NewPackage(t, "libseccomp", version, newFromGitHubRelease(
 		"seccomp/libseccomp",
 		"v"+version,
 		"libseccomp-"+version+".tar.gz",
@@ -43,7 +43,7 @@ index adccef3..65a277a 100644
 	), version
 }
 func init() {
-	artifactsM[Libseccomp] = Metadata{
+	native.MustRegister(&Artifact{
 		f: Toolchain.newLibseccomp,
 
 		Name:        "libseccomp",
@@ -51,5 +51,5 @@ func init() {
 		Website:     "https://github.com/seccomp/libseccomp/",
 
 		ID: 13823,
-	}
+	})
 }