feat(nvim): add enable option

home/modules/nvim/default.nix

@@ -1,7 +1,20 @@
-{ pkgs, inputs, ... }:
-
 {
-  home.packages = [
-    inputs.nvim.packages.${pkgs.stdenv.hostPlatform.system}.nvim
-  ];
+  config,
+  lib,
+  pkgs,
+  inputs,
+  ...
+}:
+
+let
+  cfg = config.nvim;
+in
+{
+  options.nvim.enable = lib.mkEnableOption "nvim";
+
+  config = lib.mkIf cfg.enable {
+    home.packages = [
+      inputs.nvim.packages.${pkgs.stdenv.hostPlatform.system}.nvim
+    ];
+  };
 }