internal/rosa/libbsd: fetch source via git

Eliminates the xz dependency.

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

internal/rosa/libbsd.go

@@ -36,15 +36,17 @@ func init() {
 func (t Toolchain) newLibbsd() (pkg.Artifact, string) {
 	const (
 		version  = "0.12.2"
-		checksum = "MEJ9MuLai32-gSJUrfmlDgGl7rszjdSxgb3ph9AcI5jv70VwlwwXJy1kxdAixm5Y"
+		checksum = "NVS0xFLTwSP8JiElEftsZ-e1_C-IgJhHrHE77RwKt5178M7r087waO-zYx2_dfGX"
 	)
-	return t.NewPackage("libbsd", version, pkg.NewHTTPGet(
-		nil, "https://libbsd.freedesktop.org/releases/libbsd-"+version+".tar.xz",
+	return t.NewPackage("libbsd", version, t.NewViaGit(
+		"https://gitlab.freedesktop.org/libbsd/libbsd.git",
+		"refs/tags/"+version,
 		mustDecode(checksum),
-	), &PackageAttr{
-		SourceKind: SourceKindTarXZ,
-	}, (*MakeHelper)(nil),
-		XZ,
+	), nil, &MakeHelper{
+		Generate: "echo '" + version + "' > .dist-version && ./autogen",
+	},
+		Automake,
+		Libtool,
 
 		Libmd,
 	), version