nixos-combined-flake/modules/home-manager/desktop/thunar/default.nix

{
  pkgs,
  config,
  lib,
  ...
}:
with lib; {
  options = {
    desktop.thunar.enable = mkEnableOption "Thunar";
  };
  config = mkIf config.desktop.thunar.enable {
    home.packages = with pkgs; [xfce.thunar];
  };
}