moved nvf to nvf.nix and added nvim

nixos/modules/users/nvim.nix

@@ -1,20 +1,19 @@
 {
   pkgs,
   config,
+  builtins,
   ...
-}: 
-let
-  nvf = import (builtins.fetchTarball {
-    url = "https://github.com/notashelf/nvf/archive/v0.8.tar.gz";
-    # Optionally, you can add 'sha256' for verification and caching
-    # sha256 = "<sha256>";
-  });
-in{
-  imports = [
-    nvf.nixosModules.nvf
-  ];
-  
-  programs.nvf = {
+}: {
+  programs.neovim = {
     enable = true;
+    defaultEditor = true;
+    viAlias = true;
+    vimAlias = true;
+
+    configure = {
+      customRC = ''
+      set number
+      '';
+    };
   };
 }