cmd/printdep: add flag to print out Go toolchain tarball URL
Updates
import (
"flag"
"fmt"
+ "log"
+ "runtime"
"strings"
ts "tailscale.com"
var (
goToolchain = flag.Bool("go", false, "print the supported Go toolchain git hash (a github.com/tailscale/go commit)")
+ goToolchainURL = flag.Bool("go-url", false, "print the URL to the tarball of the Tailscale Go toolchain")
)
func main() {
@@ -23,4 +26,21 @@ func main() {
if *goToolchain {
fmt.Println(strings.TrimSpace(ts.GoToolchainRev))
}
+ if *goToolchainURL {
+ var suffix string
+ switch runtime.GOARCH {
+ case "amd64":
+ // None
+ case "arm64":
+ suffix = "-" + runtime.GOARCH
+ default:
+ log.Fatalf("unsupported GOARCH %q", runtime.GOARCH)
+ }
+ switch runtime.GOOS {
+ case "linux", "darwin":
+ default:
+ log.Fatalf("unsupported GOOS %q", runtime.GOOS)
+ }
+ fmt.Printf("https://github.com/tailscale/go/releases/download/build-%s/%s%s.tar.gz\n", strings.TrimSpace(ts.GoToolchainRev), runtime.GOOS, suffix)
+ }
}
