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/libpsl.go

@@ -7,22 +7,20 @@ func (t Toolchain) newLibpsl() pkg.Artifact {
 		version  = "0.21.5"
 		checksum = "XjfxSzh7peG2Vg4vJlL8z4JZJLcXqbuP6pLWkrGCmRxlnYUFTKNBqWGHCxEOlCad"
 	)
-	return t.NewViaMake("libpsl", version, pkg.NewHTTPGetTar(
+	return t.NewPackage("libpsl", version, pkg.NewHTTPGetTar(
 		nil, "https://github.com/rockdaboot/libpsl/releases/download/"+
 			version+"/libpsl-"+version+".tar.gz",
 		mustDecode(checksum),
 		pkg.TarGzip,
-	), &MakeAttr{
+	), &PackageAttr{
 		Writable: true,
 		ScriptEarly: `
-cd /usr/src/libpsl
-
 test_disable() { chmod +w "$2" && echo "$1" > "$2"; }
 
 test_disable 'int main(){return 0;}' tests/test-is-public-builtin.c
 `,
-	},
-		t.Load(Python),
+	}, (*MakeHelper)(nil),
+		Python,
 	)
 }
 func init() { artifactsF[Libpsl] = Toolchain.newLibpsl }