getting stuff ready for flake to see

hosts/nixosWSL/configuration.nix

@@ -1,4 +1,4 @@
-{ pkgs, modulesPath, ... }:
+{ pkgs, customPackageOverlay, modulesPath, ... }:
 
 let
   custom-fonts = import ../../fonts { inherit pkgs; };
@@ -34,6 +34,10 @@ in
     experimental-features = nix-command flakes
   '';
 
+  nixpkgs.overlays = [
+    customPackageOverlay.overlay
+  ];
+
   system.stateVersion = "22.05";
 
   # Define a user account. Don't forget to set a password with ‘passwd’.