getting stuff ready for flake to see

hosts/hosts.nix

@@ -1,7 +1,10 @@
-{ lib, inputs, nixpkgs, nixpkgs-23-11, homeManager, homeManager-23-11, NixOS-WSL, ... }:
+{ lib, inputs, nixpkgs-23-11, homeManager, homeManager-23-11, NixOS-WSL, customPackageOverlay, ... }:
 {
 	"maxos" = lib.nixosSystem {
 		system = "x86_64-linux";
+		specialArgs = {
+			inherit customPackageOverlay;
+		};
 		modules = [
 			./maxos/configuration.nix
 			homeManager.nixosModules.home-manager {
@@ -19,6 +22,9 @@
 
 	"nixosWSL" = nixpkgs-23-11.lib.nixosSystem {
 		system = "x86_64-linux";
+		specialArgs = {
+			inherit customPackageOverlay;
+		};
 		modules = [
 			./nixosWSL/configuration.nix
 			homeManager-23-11.nixosModules.home-manager {

hosts/maxos/configuration.nix

@@ -2,7 +2,7 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
-{ pkgs, ... }:
+{ pkgs, customPackageOverlay, ... }:
 
 let
   custom-fonts = import ../../fonts { inherit pkgs; };
@@ -109,6 +109,9 @@ in
   programs.zsh.enable = true;
 
   nixpkgs.config.allowUnfree = true;
+  nixpkgs.overlays = [
+    customPackageOverlay.overlay
+  ];
 
   # Some programs need SUID wrappers, can be configured further or are
   # started in user sessions.

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’.