internal/rosa: setuptools artifact

Apparently the only way to install python stuff offline.

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

internal/rosa/all.go

@@ -29,6 +29,7 @@ const (
 	PkgConfig
 	Python
 	Rsync
+	Setuptools
 	Zlib
 
 	// _presetEnd is the total number of presets and does not denote a preset.

internal/rosa/python.go

@@ -63,3 +63,25 @@ make DESTDIR=/work install
 		)))
 }
 func init() { artifactsF[Python] = Toolchain.newPython }
+
+func (t Toolchain) newSetuptools() pkg.Artifact {
+	const (
+		version  = "80.10.1"
+		checksum = "p3rlwEmy1krcUH1KabprQz1TCYjJ8ZUjOQknQsWh3q-XEqLGEd3P4VrCc7ouHGXU"
+	)
+	return t.New("setuptools-"+version, []pkg.Artifact{
+		t.Load(Python),
+	}, nil, nil, `
+pip3 install \
+	--no-index \
+	--prefix=/system \
+	--root=/work \
+	/usr/src/setuptools
+`, pkg.Path(AbsUsrSrc.Append("setuptools"), true, pkg.NewHTTPGetTar(
+		nil, "https://github.com/pypa/setuptools/archive/refs/tags/"+
+			"v"+version+".tar.gz",
+		mustDecode(checksum),
+		pkg.TarGzip,
+	)))
+}
+func init() { artifactsF[Setuptools] = Toolchain.newSetuptools }