{pkgs, config, ...}: let inherit (pkgs.lib) mkOption mkIf; cfg = config.services.xserver.windowManager.xmonad; in { options = { services.xserver.windowManager.xmonad = { enable = mkOption { default = false; example = true; description = "Enable the xmonad window manager."; }; }; }; config = { services.xserver.windowManager = { session = mkIf cfg.enable [{ name = "xmonad"; start = " ${pkgs.haskellPackages.xmonad}/bin/xmonad & waitPID=$! "; }]; }; }; }