setup copilot inline suggestions + chat

flake.nix

@@ -25,10 +25,14 @@
         system,
         ...
       }: let
+        pkgsWithUnfree = import inputs.nixpkgs {
+          inherit system;
+          config.allowUnfree = true;
+        };
         nixvimLib = nixvim.lib.${system};
         nixvim' = nixvim.legacyPackages.${system};
         nixvimModule = {
-          inherit pkgs;
+          pkgs = pkgsWithUnfree;
           module = import ./config; # import the module directly
           # You can use `extraSpecialArgs` to pass additional arguments to your module files
           extraSpecialArgs = {