nix/home/hypridle/default.nix

{ ... }:
{
  services.hypridle = {
    enable = true;
      settings = {
         listener = [
           {
             timeout = 300;
             on-timeout = "hyprctl dispatch dpms off";
             on-resume = "hyprctl dispatch dpms on";
           }
         ];
       };
    };
}