nixos/modules/dwl.nix

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

let
  cfg = config.snowhawk.dwl;
in
{
  options.snowhawk.dwl = {
    enable = lib.mkEnableOption "dwl";

    package = lib.mkOption {
      type = with lib.types; package;
      default = pkgs.dwl;
      apply = p: p.overrideAttrs {
        postInstall = ''
          mkdir -p $out/share/wayland-sessions
          install $src/dwl.desktop -Dt $out/share/wayland-sessions
        '';
        passthru.providedSessions = [ "dwl" ];
      };
    };
  };

  config = lib.mkIf cfg.enable {
    services.graphical-desktop.enable = lib.mkDefault true;

    services.displayManager.sessionPackages = [ cfg.package ];
    services.displayManager.defaultSession = "dwl";

    security = {
      polkit.enable = lib.mkDefault true;
      # Uncomment to make swaylock work
      # pam.services.swaylock = { };
    };

    environment.sessionVariables.NIXOS_OZONE_WL = "1";

    programs = {
      dconf.enable = lib.mkDefault true;
      xwayland.enable = lib.mkDefault true;
    };

    xdg.portal.wlr.enable = lib.mkDefault true;
    xdg.portal.extraPortals = [
      pkgs.xdg-desktop-portal-gtk
    ];

    # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1050913
    xdg.portal.config.dwl.default = lib.mkDefault [ "wlr" "gtk" ];

    services.xserver.desktopManager.runXdgAutostartIfNone = lib.mkDefault true;

    environment.systemPackages = with pkgs; [
      wl-clipboard
      wmenu
      foot
      cfg.package
    ];
  };
}