languages/nim: assert on darwin systems

due to nimlsp not working properly on darwin

configuration.nix

@@ -68,7 +68,7 @@ inputs: let
         elixir.enable = isMaximal;
         bash.enable = isMaximal;
         terraform.enable = isMaximal;
-        nim.enable = isMaximal;
+        nim.enable = false;
         tailwind.enable = isMaximal;
         clang = {
           enable = isMaximal;

modules/languages/nim.nix

@@ -88,6 +88,15 @@ in {
   };
 
   config = mkIf cfg.enable (mkMerge [
+    {
+      assertions = [
+        {
+          assertion = !pkgs.stdenv.isDarwin;
+          message = "Nim language support is only available on Linux";
+        }
+      ];
+    }
+
     (mkIf cfg.treesitter.enable {
       vim.treesitter.enable = true;
       vim.treesitter.grammars = [cfg.treesitter.package];