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/libseccomp.go

@@ -1,10 +1,8 @@
 package rosa
 
-import (
-	"hakurei.app/internal/pkg"
-)
+import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newLibseccomp() pkg.Artifact {
+func (t Toolchain) newLibseccomp() (pkg.Artifact, string) {
 	const (
 		version  = "2.6.0"
 		checksum = "mMu-iR71guPjFbb31u-YexBaanKE_nYPjPux-vuBiPfS_0kbwJdfCGlkofaUm-EY"
@@ -24,6 +22,14 @@ ln -s ../system/bin/bash /bin/
 		Gperf,
 
 		KernelHeaders,
-	)
+	), version
+}
+func init() {
+	artifactsM[Libseccomp] = Metadata{
+		f: Toolchain.newLibseccomp,
+
+		Name:        "libseccomp",
+		Description: "an interface to the Linux Kernel's syscall filtering mechanism",
+		Website:     "https://github.com/seccomp/libseccomp/",
+	}
 }
-func init() { artifactsF[Libseccomp] = Toolchain.newLibseccomp }