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/zlib.go

@@ -2,7 +2,7 @@ package rosa
 
 import "hakurei.app/internal/pkg"
 
-func (t Toolchain) newZlib() pkg.Artifact {
+func (t Toolchain) newZlib() (pkg.Artifact, string) {
 	const (
 		version  = "1.3.1"
 		checksum = "E-eIpNzE8oJ5DsqH4UuA_0GDKuQF5csqI8ooDx2w7Vx-woJ2mb-YtSbEyIMN44mH"
@@ -20,6 +20,14 @@ func (t Toolchain) newZlib() pkg.Artifact {
 
 		Host:  `""`,
 		Build: `""`,
-	})
+	}), version
+}
+func init() {
+	artifactsM[Zlib] = Metadata{
+		f: Toolchain.newZlib,
+
+		Name:        "zlib",
+		Description: "lossless data-compression library",
+		Website:     "https://zlib.net/",
+	}
 }
-func init() { artifactsF[Zlib] = Toolchain.newZlib }