wpaperd+tux: Implement wallpaper switching by keybind

required using the unstable version of wpaperd

modules/factory/wpaperd.nix

@@ -1,8 +1,9 @@
 {
-  config.flake.factory.wpaperd = config: {
+  config.flake.factory.wpaperd = config: { pkgs, ... }: {
     services.wpaperd = {
       enable = true;
       settings = config;
+      package = pkgs.unstable.wpaperd;
     };
   };
 }