pinwheel: Add nix-index module

hosts/pinwheel/configuration.nix

@@ -114,6 +114,7 @@
   config-manager.flakePath = "/home/alex/config";
 
   mod = {
+    nix-index.enable = true;
     greetd.enable = true;
     git.enable = true;
     openvpn.enable = true;

hosts/pinwheel/modules/nix-index/default.nix

@@ -0,0 +1,21 @@
+{ lib, config, ... }:
+let
+  enabled = config.mod.nix-index.enable;
+in
+{
+  options = {
+    mod.nix-index = {
+      enable = lib.mkEnableOption "add nix-index module";
+    };
+  };
+
+  config = lib.mkIf enabled {
+    home-manager.users.alex = {
+      programs.nix-index = {
+        enable = true;
+
+        enableZshIntegration = true;
+      };
+    };
+  };
+}