{ config, lib, pkgs, ... }: let cfg = config.systems.displaymanager; graphical = config.this.graphical; in with lib; { options = { systems.displaymanager.enable = mkOption { default = graphical.enable; type = with types; bool; }; }; config = mkIf cfg.enable { services.xserver = { enable = true; displayManager = { autoLogin = { enable = true; user = "james"; }; gdm.enable = true; }; }; }; }