// or they require our intercepted vcs-test.golang.org to regenerate the repository.
		// Require all tests that use VCS commands to be skipped in short mode.
		env = append(env, "TESTGOVCS=panic")
	}

	if os.Getenv("CGO_ENABLED") != "" || runtime.GOOS != goHostOS || runtime.GOARCH != goHostArch {
		// If the actual CGO_ENABLED might not match the cmd/go default, set it

	if tg.env == nil {
		tg.env = append([]string(nil), os.Environ()...)
		tg.env = append(tg.env, "GO111MODULE=off", "TESTGONETWORK=panic")
		if testing.Short() {
			tg.env = append(tg.env, "TESTGOVCS=panic")
		}
	}
	for i, v := range tg.env {
		if strings.HasPrefix(v, name+"=") {
			tg.env = append(tg.env[:i], tg.env[i+1:]...)
			break
		}
	}
}

func (tg *testgoData) goTool() string {