anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "sumo";
  -  version = "1.8.0";
  +  version = "1.9.2";
   
     src = fetchFromGitHub {
       owner = "eclipse";
       repo = "sumo";
       rev = "v${lib.replaceStrings ["."] ["_"] version}";
  -    sha256 = "1w9im1zz8xnkdwmv4v11kn1xcqm889268g1fw4y2s9f6shi41mxx";
  +    sha256 = "0zpd331vy1kfi4hfiszv3m8wl4m0wdfr3zzza200kkaakw5hjxhs";
       fetchSubmodules = true;
     };
   
  
positive.code:     jdk
      libGL
      libGLU
      libX11
      libjpeg
      libpng
      libtiff
  
negative.code:     zlib
      python3
    ] ++ (with xorg; [
      libX11
      libXcursor
      libXext
      libXfixes
  