remove unused nix code

flake.lock: Update

Flake lock file updates:

• Updated input 'neovim-nightly-overlay':
    'github:nix-community/neovim-nightly-overlay/b7b3632fab34541543373254c265da03c1d0f240?narHash=sha256-SDLZMha2miaChOBGBkQJlTtk2kvcB7WIVVZ2l0/9byc%3D' (2025-10-01)
  → 'github:nix-community/neovim-nightly-overlay/7ff73a295b0065bde2f8b43b31558136ca77bd98?narHash=sha256-39JFRb006AOsIcOq%2B03H3y6YcGyaphk1CW5DRi14cOE%3D' (2025-10-13)
• Updated input 'neovim-nightly-overlay/flake-parts':
    'github:hercules-ci/flake-parts/4524271976b625a4a605beefd893f270620fd751?narHash=sha256-%2BuWLQZccFHwqpGqr2Yt5VsW/PbeJVTn9Dk6SHWhNRPw%3D' (2025-09-01)
  → 'github:hercules-ci/flake-parts/758cf7296bee11f1706a574c77d072b8a7baa881?narHash=sha256-wfG0S7pltlYyZTM%2BqqlhJ7GMw2fTF4mLKCIVhLii/4M%3D' (2025-10-01)
• Updated input 'neovim-nightly-overlay/git-hooks':
    'github:cachix/git-hooks.nix/54df955a695a84cd47d4a43e08e1feaf90b1fd9b?narHash=sha256-ytw7ROXaWZ7OfwHrQ9xvjpUWeGVm86pwnEd1QhzawIo%3D' (2025-09-17)
  → 'github:cachix/git-hooks.nix/cfc9f7bb163ad8542029d303e599c0f7eee09835?narHash=sha256-PTod9NG%2Bi3XbbnBKMl/e5uHDBYpwIWivQ3gOWSEuIEM%3D' (2025-10-03)
• Updated input 'neovim-nightly-overlay/neovim-src':
    'github:neovim/neovim/198c9e9bca7549cf7110be8c6f1df1c38d4e747f?narHash=sha256-oc1pPeoe8458X0r/Wum8CucVcJLlIp4mg%2B1HiOSVRgA%3D' (2025-09-30)
  → 'github:neovim/neovim/72b0bfa1fb7e897e5126aabae718a5480f466b9e?narHash=sha256-RnB%2BoJcP37YT9pjr1osUQtJc%2B1qcVyaaeSbiSyXwm1Y%3D' (2025-10-12)
• Updated input 'neovim-nightly-overlay/nixpkgs':
    'github:NixOS/nixpkgs/647e5c14cbd5067f44ac86b74f014962df460840?narHash=sha256-JVZl8NaVRYb0%2B381nl7LvPE%2BA774/dRpif01FKLrYFQ%3D' (2025-09-28)
  → 'github:NixOS/nixpkgs/362791944032cb532aabbeed7887a441496d5e6e?narHash=sha256-gKl2Gtro/LNf8P%2B4L3S2RsZ0G390ccd5MyXYrTdMCFE%3D' (2025-10-11)
• Updated input 'neovim-nightly-overlay/treefmt-nix':
    'github:numtide/treefmt-nix/5eda4ee8121f97b218f7cc73f5172098d458f1d1?narHash=sha256-ySNJ008muQAds2JemiyrWYbwbG%2BV7S5wg3ZVKGHSFu8%3D' (2025-09-24)
  → 'github:numtide/treefmt-nix/761ae7aff00907b607125b2f57338b74177697ed?narHash=sha256-gq9rdocpmRZCwLS5vsHozwB6b5nrOBDNc2kkEaTXHfg%3D' (2025-10-10)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/d48b56f4899ee1d5377291576284969c9e37acc2?narHash=sha256-7G5fSMPNVwWNlFpZLwvKB8PUOaqPzFQbrtZ7RAzg2nw%3D' (2025-10-01)
  → 'github:NixOS/nixpkgs/09c05674757a82f32b67f70f702e56c4901a3cdd?narHash=sha256-IzUhHp/jU06jBW6S%2Bd12AO3sgq5yehYVTCBH7J6re5c%3D' (2025-10-13)

flake.lock: Update

Flake lock file updates:

• Updated input 'neovim-nightly-overlay/nixpkgs':
    'github:NixOS/nixpkgs/362791944032cb532aabbeed7887a441496d5e6e?narHash=sha256-gKl2Gtro/LNf8P%2B4L3S2RsZ0G390ccd5MyXYrTdMCFE%3D' (2025-10-11)
  → follows 'nixpkgs'

flake.nix

@@ -4,27 +4,23 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/master";
     flake-utils.url = "github:numtide/flake-utils";
-    neovim-nightly-overlay.url = "github:nix-community/neovim-nightly-overlay";
+    neovim-nightly-overlay = {
+      url = "github:nix-community/neovim-nightly-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
     gen-luarc = {
       url = "github:mrcjkb/nix-gen-luarc-json";
       inputs.nixpkgs.follows = "nixpkgs";
     };
     dart = {
-      url = "github:iofq/dart.nvim";
+      url = "path:/home/e/dev/dart.nvim";
     };
     nvim-treesitter-main = {
       url = "github:iofq/nvim-treesitter-main";
     };
-    # Add bleeding-edge plugins here.
-    # They can be updated with `nix flake update` (make sure to commit the generated flake.lock)
-    # wf-nvim = {
-    #   url = "github:Cassin01/wf.nvim";
-    #   flake = false;
-    # };
   };
   outputs =
     inputs@{
-      self,
       nixpkgs,
       flake-utils,
       ...
@@ -34,20 +30,28 @@
 
       # This is where the Neovim derivation is built.
       neovim-overlay = import ./nix/neovim-overlay.nix { inherit inputs; };
+      finalOverlays = [
+        inputs.neovim-nightly-overlay.overlays.default
+        inputs.nvim-treesitter-main.overlays.default
+        (final: prev: {
+          vimPlugins = prev.vimPlugins.extend (
+            f: p: {
+              nvim-treesitter = p.nvim-treesitter.withAllGrammars;
+              nvim-treesitter-textobjects = p.nvim-treesitter-textobjects.overrideAttrs {
+                dependencies = [ f.nvim-treesitter ];
+              };
+            }
+          );
+        })
+        neovim-overlay
+      ];
     in
     flake-utils.lib.eachSystem systems (
       system:
       let
         pkgs = import nixpkgs {
           inherit system;
-          config.allowUnfree = true;
-          overlays = [
-            inputs.neovim-nightly-overlay.overlays.default
-            inputs.nvim-treesitter-main.overlays.default
-            neovim-overlay
-            # This adds a function can be used to generate a .luarc.json
-            # containing the Neovim API all plugins in the workspace directory.
-            # The generated file can be symlinked in the devShell's shellHook.
+          overlays = finalOverlays ++ [
             inputs.gen-luarc.overlays.default
           ];
         };
@@ -55,16 +59,13 @@
           name = "nvim-devShell";
           buildInputs = with pkgs; [
             lua-language-server
-            nil
+            nixd
             stylua
             luajitPackages.luacheck
-            nvim-dev
           ];
           shellHook = ''
             # symlink the .luarc.json generated in the overlay
             ln -fs ${pkgs.nvim-luarc-json} .luarc.json
-            # allow quick iteration of lua configs
-            ln -Tfns $PWD/nvim ~/.config/nvim-dev
           '';
         };
       in
@@ -73,7 +74,6 @@
           default = nvim;
           nvim = pkgs.nvim-pkg;
           nvim-min = pkgs.nvim-min-pkg;
-          nvim-dev = pkgs.nvim-dev;
         };
         devShells = {
           default = shell;
@@ -81,6 +81,6 @@
       }
     )
     // {
-      overlays.default = final: prev: (neovim-overlay final prev);
+      overlays.default = nixpkgs.lib.composeManyExtensions finalOverlays;
     };
 }