anchor.diff:      allowedRequisites =
         [ bootstrapTools ] ++
         (with pkgs; [ xz.bin xz.out libcxx libcxxabi ]) ++
  -      (with pkgs.darwin; [ dyld Libsystem CF ICU locale ]);
  +      (with pkgs.darwin; [ dyld Libsystem Libsystem.dev CF ICU locale ]);
   
       overrides = persistent;
     };
  
positive.code:       binutils.bintools darwin.binutils darwin.binutils.bintools
        cc.expand-response-params
      ]) ++ (with pkgs.darwin; [
        dyld Libsystem CF cctools ICU libiconv locale
      ]);
  
      overrides = self: super:
  
negative.code:     allowedRequisites =
        [ bootstrapTools ] ++
        (with pkgs; [ xz.bin xz.out bash libcxx libcxxabi ]) ++
        (with pkgs.darwin; [ dyld ICU Libsystem Libsystem.dev locale ]);
  
      overrides = persistent;
    };
  