{ lib, config, pkgs, ... }: { options = { this.laptop.enable = lib.mkEnableOption "laptop settings"; }; config = lib.mkIf config.this.laptop.enable { powerManagement.enable = true; services.tlp.enable = true; programs.light = { enable = true; brightnessKeys = { enable = true; step = 5; }; }; environment.systemPackages = with pkgs; [ acpi powertop ]; }; }