internal/rosa: cpython artifact

Dependency of llvm build scripts, also an optional cure dependency of ninja.

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

internal/rosa/python.go

@@ -0,0 +1,60 @@
+package rosa
+
+import (
+	"strings"
+
+	"hakurei.app/internal/pkg"
+)
+
+// NewPython returns a [pkg.Artifact] containing an installation of Python.
+func (t Toolchain) NewPython() pkg.Artifact {
+	const (
+		version  = "3.14.2"
+		checksum = "7nZunVMGj0viB-CnxpcRego2C90X5wFsMTgsoewd5z-KSZY2zLuqaBwG-14zmKys"
+	)
+	skipTests := []string{
+		// requires internet access (http://www.pythontest.net/)
+		"test_asyncio",
+		"test_socket",
+		"test_urllib2",
+		"test_urllibnet",
+		"test_urllib2net",
+
+		// hits std.PresetExt ruleset
+		"test_os",
+		"test_posix",
+		"test_shutil",
+
+		// somehow picks up mtime of source code
+		"test_zipfile",
+
+		// requires gcc
+		"test_ctypes",
+
+		// breaks on llvm
+		"test_dbm_gnu",
+	}
+	return t.New("python-"+version, []pkg.Artifact{
+		t.NewMake(),
+		t.NewZlib(),
+	}, nil, []string{
+		"EXTRATESTOPTS=-j0 -x " + strings.Join(skipTests, " -x "),
+	}, `
+# test_synopsis_sourceless assumes this is writable and checks __pycache__
+chmod -R +w /usr/src/python/
+
+export HOME="$(mktemp -d)"
+cd "$(mktemp -d)"
+/usr/src/python/configure \
+	--prefix=/system
+make "-j$(nproc)"
+make test
+make DESTDIR=/work install
+`, pkg.Path(AbsUsrSrc.Append("python"), true,
+		pkg.NewHTTPGetTar(
+			nil, "https://www.python.org/ftp/python/"+version+
+				"/Python-"+version+".tgz",
+			mustDecode(checksum),
+			pkg.TarGzip,
+		)))
+}