internal/rosa/make: migrate to helper interface

This also updates all affected artifacts to use new behaviour.

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

internal/rosa/libgd.go

@@ -7,21 +7,20 @@ func (t Toolchain) newLibgd() pkg.Artifact {
 		version  = "2.3.3"
 		checksum = "8T-sh1_FJT9K9aajgxzh8ot6vWIF-xxjcKAHvTak9MgGUcsFfzP8cAvvv44u2r36"
 	)
-	return t.NewViaMake("libgd", version, pkg.NewHTTPGetTar(
+	return t.NewPackage("libgd", version, pkg.NewHTTPGetTar(
 		nil, "https://github.com/libgd/libgd/releases/download/"+
 			"gd-"+version+"/libgd-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &MakeAttr{
-		OmitDefaults: true,
+	), &PackageAttr{
 		Env: []string{
 			"TMPDIR=/dev/shm/gd",
 		},
 		ScriptEarly: `
 mkdir /dev/shm/gd
 `,
-	},
-		t.Load(Zlib),
+	}, (*MakeHelper)(nil),
+		Zlib,
 	)
 }
 func init() { artifactsF[Libgd] = Toolchain.newLibgd }