Add nil

flake.nix

@@ -26,6 +26,11 @@
     home-manager-atemu.url = "github:Atemu/home-manager/darwin-copy-apps-fully-wip";
     home-manager-atemu.inputs.nixpkgs.follows = "nixpkgs-unstable";
 
+    # Nix language server
+    nil.url = "github:oxalica/nil";
+    nil.inputs.nixpkgs.follows = "nixpkgs-unstable";
+    nil.inputs.flake-utils.follows = "flake-utils";
+
     # Extra sources
     helix.url = "github:helix-editor/helix";
     helix.inputs.nixpkgs.follows = "nixpkgs-unstable";
@@ -254,6 +259,8 @@
           inherit (inputs) kitty-icon fisher-src;
           lib = prev.lib // { homebrew-enabled = inputs.homebrew-enabled.value; };
         };
+
+        nil = inputs.nil.overlays.default;
       };
 
       # `nix-darwin` configs and modules

home/programs.nix

@@ -116,10 +116,11 @@ in
 
     # Useful nix related tools
     cachix # adding/managing alternative binary caches hosted by Cachix
-    comma # run software from without installing it
+    comma # run software from nixpkgs without installing it
     nixpkgs-fmt
     nix-prefetch-git
     nix-tree
+    nil # nix language server
   ] ++ lib.optionals stdenv.isDarwin [
     m-cli # useful macOS CLI commands
     is-dark-mode # see /overlays/colors.nix