Use official nix formatter

flake.nix

@@ -122,6 +122,7 @@
                 }}/bin/rebuild ${self} "$@"''}";
               };
             };
+            formatter = pkgs.nixfmt-rfc-style;
           }
         );
       };

hm/dev/common.nix

@@ -22,7 +22,7 @@
 
       # nix
       lix
-      nixpkgs-fmt
+      nixfmt-rfc-style
 
       # Always on (graphical)
     ] ++ lib.optionals config.frogeye.desktop.xorg [
@@ -71,7 +71,7 @@
       nil_ls = {
         enable = true;
         settings = {
-          formatting.command = [ "nixpkgs-fmt" ];
+          formatting.command = [ "nixfmt" ];
           nix.flake = {
             autoArchive = true;
             autoEvalInputs = true;