<lush> I'm doing it systemwide rn, and I added:
`xserver = {
windowManager.xmonad = {
        enable                    = true;
        enableContribAndExtras    = true;
        config                    = builtins.readFile ../../../hm/wm/xmonad/xmonad/xmonad_neu.hs;
        enableConfiguredRecompile = true;
        flake = {
          enable   = true;
          compiler = "ghc98";
        };
      };
`
to my config.