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 "xmonad";

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

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

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

    local.lockscreen.i3lock.enable = lib.mkDefault true;
  };
}