refactor(dotfiles): use formatter output in fix app

src/dotfiles/apps.nix

@@ -14,7 +14,7 @@ in
       pkgs.writeShellApplication {
         name = "fix";
         runtimeInputs = [
-          formatter.config.build.wrapper
+          formatter
           pkgs.statix
           pkgs.deadnix
         ];

src/dotfiles/default.nix

@@ -40,20 +40,20 @@ let
     registry = registry.collected;
   };
 
-  formatter = import ./formatter.nix {
-    inherit inputs system;
-  };
 in
 {
-  formatter.${system} = formatter.config.build.wrapper;
+  formatter.${system} =
+    (import ./formatter.nix {
+      inherit inputs system;
+    }).config.build.wrapper;
 
   apps.${system} = import ./apps.nix {
     inherit
       inputs
       lib
-      formatter
       system
       ;
+    formatter = self.formatter.${system};
   };
 
   nixosConfigurations = import ./hosts.nix {