anchor.diff:  
     enableParallelBuilding = true;
   
  -  NIX_CFLAGS_COMPILE = "-I${cairo}/include/cairo";
  +  NIX_CFLAGS_COMPILE = "-I${cairo}/include/cairo"
  +    + stdenv.lib.optionalString (libintlOrEmpty != null) " -lintl";
   
     nativeBuildInputs = [ perl pkgconfig gettext ];
   
  
positive.code: 
    postInstall = "rm -rf $out/share/gtk-doc";
  
    meta = {
      description = "A multi-platform toolkit for creating graphical user interfaces";
  
      longDescription = ''
        GTK+ is a highly usable, feature rich toolkit for creating
  
negative.code:       proprietary software with GTK+ without any license fees or
        royalties.
      '';
    };
  }
  