add alejandra as formatter for nix to helix config

common.nix

@@ -68,8 +68,6 @@ with builtins; {
       aria2
       usbutils
       numbat
-
-      alejandra
     ];
   };
 

modules/shell/helix.nix

@@ -62,6 +62,14 @@
             name = "nu";
             language-servers = ["nu-builtin-lsp"];
           }
+          {
+            name = "nix";
+            formatter = {
+              command = "${pkgs.alejandra}/bin/alejandra";
+              args = ["--quiet"];
+            };
+            auto-format = true;
+          }
         ];
       };
     };