nix-dotfiles/hosts/common/services/xserver.nix

{ config, ... }:
{
  services.displayManager = {
    enable = true;
    defaultSession = "none+xmonad";
    sddm = {
      enable = !config.machineVars.headless;
      wayland.enable = true;
    };
  };

  services.xserver = {
    enable = !config.machineVars.headless;

    xkb = {
      layout = "us";
      options = "caps:escape";
    };

    # desktopManager = {
    #   xterm.enable = false;
    #   xfce.enable = !config.machineVars.headless;
    # };

    # displayManager.lightdm.enable = !config.machineVars.headless;

    windowManager.xmonad = {
      enable = true;
      enableContribAndExtras = true;
      enableConfiguredRecompile = true;
      extraPackages = hPkgs: with hPkgs; [
        dbus
      ];
    };
  };
}