config.nix/modules/desktop/wallpaper.nix

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

{
  options = {
    desktop = {
      wallpaper.enable = lib.mkEnableOption "enable wallpapers";
    };
  };

  config = lib.mkIf config.desktop.wallpaper.enable {
    home.packages = with pkgs; [
      waypaper
      swww
    ];
  };
}