system/modules/nixos/configs/window-manager/xmonad.nix

{ config, pkgs, lib, ... }:

let cfg = config.local.window-manager.xmonad; in
{
  options.local.window-manager.xmonad.enable = lib.mkEnableOption "window-manager";

  config = lib.mkIf cfg.enable {
    services.dbus = {
      enable = true;
      packages = [ pkgs.dconf ];
    };

    services.xserver = {
      enable = true;
      displayManager.defaultSession = "none+xmonad";
      windowManager.xmonad.enable = true;
    };

    programs.gnupg.agent.pinentryFlavor = "gtk2";
  };
}