internal/rosa/meson: migrate to helper

This also migrates to source from the Microsoft Github release.

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

internal/rosa/meson.go

@@ -10,26 +10,15 @@ import (
 func (t Toolchain) newMeson() (pkg.Artifact, string) {
 	const (
 		version  = "1.11.0"
-		checksum = "b7oo3U_cklhzsTfsyYsjPGyeEufiS-Pm06JPLzodseS125Ach62ZBly7R6dSDiAc"
+		checksum = "QJolMPzypTiS65GReSNPPlkUjHI6b1EDpZ-avIk3n6b6TQ93KfUM57DVUpY97Hf7"
 	)
-	return t.New("meson-"+version, 0, []pkg.Artifact{
-		t.Load(Zlib),
-		t.Load(Python),
-		t.Load(Setuptools),
-	}, nil, nil, `
-cd /usr/src/meson
-chmod -R +w meson.egg-info
-python3 setup.py \
-	install \
-	--prefix=/system \
-	--root=/work
-`, pkg.Path(AbsUsrSrc.Append("meson"), true, newFromGitHubRelease(
+	return t.NewPackage("meson", version, newFromGitHub(
 		"mesonbuild/meson",
 		version,
-		"meson-"+version+".tar.gz",
 		checksum,
-		pkg.TarGzip,
-	))), version
+	), nil, (*PipHelper)(nil),
+		Setuptools,
+	), version
 }
 func init() {
 	artifactsM[Meson] = Metadata{