add nix formatter

.nixd.json

@@ -7,9 +7,6 @@
     "depth": 0,
     "workers": 3
   },
-  "formatting": {
-    "command": "nixpkgs-fmt"
-  },
   "options": {
     "enable": true,
     "target": {

config/nvim/lua/core/plugin_config/null_ls.lua

@@ -10,6 +10,7 @@ null_ls.setup({
 		formatting.prettier,
 		formatting.stylua,
 		formatting.csharpier,
+    formatting.alejandra
 		diagnostics.cpplint,
 	},
 	on_attach = function(client, bufnr)

modules/dev/nil.nix

@@ -11,7 +11,7 @@ in
   config = mkIf cfg.enable {
     environment.systemPackages = with pkgs; [
       nil
-      nixpkgs-fmt
+      alejandra
     ];
   };
 }

modules/dev/nixd.nix

@@ -15,7 +15,7 @@ in
   config = mkIf cfg.enable {
     environment.systemPackages = with pkgs; [
       unstable.nixd
-      nixpkgs-fmt
+      alejandra
     ];
   };
 }