internal/rosa: provide package metadata

This had to be done out-of-band because there was no way to efficiently represent these within Artifact.

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

internal/rosa/libffi.go

@@ -2,7 +2,7 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newLibffi() pkg.Artifact {
+func (t Toolchain) newLibffi() (pkg.Artifact, string) {
 	const (
 		version  = "3.4.5"
 		checksum = "apIJzypF4rDudeRoI_n3K7N-zCeBLTbQlHRn9NSAZqdLAWA80mR0gXPTpHsL7oMl"
@@ -14,6 +14,14 @@ func (t Toolchain) newLibffi() pkg.Artifact {
 		pkg.TarGzip,
 	), nil, (*MakeHelper)(nil),
 		KernelHeaders,
-	)
+	), version
+}
+func init() {
+	artifactsM[Libffi] = Metadata{
+		f: Toolchain.newLibffi,
+
+		Name:        "libffi",
+		Description: "a portable, high level programming interface to various calling conventions",
+		Website:     "https://sourceware.org/libffi/",
+	}
 }
-func init() { artifactsF[Libffi] = Toolchain.newLibffi }