internal/rosa: tamago toolchain artifact

Currently used by the (wip) bootloader, might not make it into the final OS.

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

internal/rosa/tamago.go

@@ -0,0 +1,40 @@
+package rosa
+
+import (
+	"runtime"
+
+	"hakurei.app/internal/pkg"
+)
+
+func (t Toolchain) newTamaGo() pkg.Artifact {
+	const (
+		version  = "1.26.0"
+		checksum = "5XkfbpTpSdPJfwtTfUegfdu4LUy8nuZ7sCondiRIxTJI9eQONi8z_O_dq9yDkjw8"
+	)
+	return t.New("tamago-go"+version, 0, []pkg.Artifact{
+		t.Load(Bash),
+		t.Load(Go),
+	}, nil, []string{
+		"CC=cc",
+		"GOCACHE=/tmp/gocache",
+	}, `
+mkdir /work/system # "${TMPDIR}"
+cp -r /usr/src/tamago /work/system
+cd /work/system/tamago/src
+chmod -R +w ..
+
+sed -i \
+	's,/lib/ld-musl-`+linuxArch()+`.so.1,/system/bin/linker,' \
+	cmd/link/internal/`+runtime.GOARCH+`/obj.go
+rm \
+	os/root_unix_test.go
+
+./all.bash
+`, pkg.Path(AbsUsrSrc.Append("tamago"), false, pkg.NewHTTPGetTar(
+		nil, "https://github.com/usbarmory/tamago-go/archive/refs/tags/"+
+			"tamago-go"+version+".tar.gz",
+		mustDecode(checksum),
+		pkg.TarGzip,
+	)))
+}
+func init() { artifactsF[TamaGo] = Toolchain.newTamaGo }