internal/rosa: migrate buildcatrust

Other nss-related packages are unlikely to be migrated any time soon.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/python.go

@@ -198,20 +198,21 @@ func (s *S) newPythonPackage(
 	build P, extra ...ArtifactH,
 ) {
 	name = "python-" + name
-	s.mustRegister(func(t Toolchain) (pkg.Artifact, string) {
-		return t.NewPackage(name, version, source, attrP, attr, slices.Concat(
-			P{Python},
-			extra,
-			build,
-		)...), version
-	}, &Metadata{
-		Name:        name,
-		Description: description,
-		Website:     website,
+	s.MustRegister(name, func(t Toolchain) (*Metadata, pkg.Artifact) {
+		return &Metadata{
+				Name:        name,
+				Description: description,
+				Website:     website,
+				Version:     version,
 
-		Dependencies: slices.Concat(P{Python}, extra),
+				Dependencies: slices.Concat(P{Python}, extra),
 
-		ID: id,
+				ID: id,
+			}, t.NewPackage(name, version, source, attrP, attr, slices.Concat(
+				P{Python},
+				extra,
+				build,
+			)...)
 	})
 }