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/libxml2.go

@@ -6,7 +6,7 @@ import (
 	"hakurei.app/internal/pkg"
 )
 
-func (t Toolchain) newLibxml2() pkg.Artifact {
+func (t Toolchain) newLibxml2() (pkg.Artifact, string) {
 	const (
 		version  = "2.15.1"
 		checksum = "pYzAR3cNrEHezhEMirgiq7jbboLzwMj5GD7SQp0jhSIMdgoU4G9oU9Gxun3zzUIU"
@@ -21,6 +21,14 @@ func (t Toolchain) newLibxml2() pkg.Artifact {
 	}, (*MakeHelper)(nil),
 		Diffutils,
 		XZ,
-	)
+	), version
+}
+func init() {
+	artifactsM[Libxml2] = Metadata{
+		f: Toolchain.newLibxml2,
+
+		Name:        "libxml2",
+		Description: "an XML toolkit implemented in C",
+		Website:     "https://gitlab.gnome.org/GNOME/libxml2/",
+	}
 }
-func init() { artifactsF[Libxml2] = Toolchain.newLibxml2 }