anchor.diff:  , libpng }:
   
   stdenv.mkDerivation rec {
  -  version = "1.11.3";
     name = "gdal-${version}";
  +  version = "1.11.5";
   
     src = fetchurl {
  -    url = "https://download.osgeo.org/gdal/${version}/${name}.tar.gz";
  -    sha256 = "561588bdfd9ca91919d4679a77a2b44214b158934ee8b425295ca5be33a1014d";
  +    url = "https://download.osgeo.org/gdal/${version}/${name}.tar.xz";
  +    sha256 = "0hphxzvy23v3vqxx1y22hhhg4cypihrb8555y12nb4mrhzlw7zfl";
     };
   
     buildInputs = [ unzip libjpeg libtiff libpng python pythonPackages.numpy proj openssl ];
  
positive.code:     ./python.patch
    ];
  
    hardeningDisable = [ "format" ];
  
    # Don't use optimization for gcc >= 4.3. That's said to be causing segfaults.
    # Unset CC and CXX as they confuse libtool.
  
negative.code:     export PYTHONPATH=''${PYTHONPATH:+''${PYTHONPATH}:}$pythonInstallDir
    '';
  
    enableParallelBuilding = true;
  
    meta = {
      description = "Translator library for raster geospatial data formats";
      homepage = http://www.gdal.org/;
  