internal/rosa: toybox artifact

This compiles surprisingly quickly and required no workarounds, unlike busybox.

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

internal/rosa/toybox.go

@@ -0,0 +1,38 @@
+package rosa
+
+import "hakurei.app/internal/pkg"
+
+func (t Toolchain) newToybox() pkg.Artifact {
+	const (
+		version  = "0.8.9"
+		checksum = "ek4CoKxDsdS2QXuQzXfTn9ADDFjUlY4OtNC-tUiJ6WGxGdtgdLzKG_MzCIaXYcAN"
+	)
+	return t.New("toybox-"+version, false, stage3Concat(t, []pkg.Artifact{},
+		t.Load(Make),
+		t.Load(Bash),
+
+		t.Load(KernelHeaders),
+	), nil, nil, `
+ln -s ../system/bin/bash /bin/ || true
+cd /usr/src/toybox
+chmod +w kconfig tests
+rm \
+	tests/du.test \
+	tests/sed.test \
+	tests/tar.test
+
+export LDFLAGS="${LDFLAGS} -static"
+make defconfig
+make \
+	"-j$(nproc)" \
+	USER=cure \
+	tests
+PREFIX=/work/system/bin make install_flat
+`, pkg.Path(AbsUsrSrc.Append("toybox"), true, pkg.NewHTTPGetTar(
+		nil,
+		"https://landley.net/toybox/downloads/toybox-"+version+".tar.gz",
+		mustDecode(checksum),
+		pkg.TarGzip,
+	)))
+}
+func init() { artifactsF[Toybox] = Toolchain.newToybox }