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cmd/printdep: add flag to print out Go toolchain tarball URL

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Updates #3669

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2022-01-06 08:38:26 -08:00 committed by Brad Fitzpatrick
parent 3690bfecb0
commit 64c2657448
1 changed files with 21 additions and 1 deletions
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22
cmd/printdep/printdep.go
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@ -9,13 +9,16 @@
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)")
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)
}
}