Function nixDaemonFlagVal

internal/boxcli/setup.go:65–84

We return a closure to avoid printing the warning every time and just printing it if we actually need the value of the flag. TODO: devbox.Open should run nix.EnsureNixInstalled and do this logic internally. Then setup can decide if it wants to pass in the value of the nixDaemonFlag (if changed).

(cmd *cobra.Command)

// internally. Then setup can decide if it wants to pass in the value of the
// nixDaemonFlag (if changed).
func nixDaemonFlagVal(cmd *cobra.Command) func() *bool {
	return func() *bool {
		if !cmd.Flags().Changed(nixDaemonFlag) {
			if os.Geteuid() == 0 {
				ux.Fwarningf(
					cmd.ErrOrStderr(),
					"Running as root. Installing Nix in multi-user mode.\n",
				)
				return lo.ToPtr(true)
			}
			return nil
		}

		val, err := cmd.Flags().GetBool(nixDaemonFlag)
		if err != nil {
			return nil
		}
		return &val
	}
}