nixvim(lsp): enable lsp & nixlang lsp server

flake.lock

@@ -315,7 +315,7 @@
       },
       "locked": {
         "lastModified": 1,
-        "narHash": "sha256-uROMzaBc8FFwhXwpWT2+Zmci8gvRCGzQc0wVwOGLcEs=",
+        "narHash": "sha256-0SJy0es1cOrwO73ew9nPJdZfjHFOPo3v/zflUVZZASE=",
         "path": "./nixvim",
         "type": "path"
       },

nixvim/config/default.nix

@@ -9,7 +9,8 @@
     ./bufferline.nix
     ./lualine.nix
 
-    # language support
+    # language support & lsp
+    ./lsp.nix
     ./nix.nix
   ];
 }

nixvim/config/lsp.nix

@@ -0,0 +1,9 @@
+{
+  plugins.lsp = {
+    enable = true;
+    inlayHints = true;
+    servers = {
+      nixd.enable = true;
+    };
+  };
+}