anchor.diff:        --replace 'PyPlatec==1.4.0' 'PyPlatec' \
     '';
   
  -  # with python<3.5, unittest fails to discover tests because of their filenames
  -  # so nose is used instead.
     doCheck = !isPy27; # google namespace clash
  -  checkInputs = stdenv.lib.optional (pythonOlder "3.5") [ nose ];
  -  postCheck = stdenv.lib.optionalString (pythonOlder "3.5") ''
  -    nosetests tests
  -  '';
  +  checkInputs = [ pytestCheckHook ];
  +
  +  disabledTests = [
  +    "TestSerialization"
  +  ];
   
     meta = with lib; {
       homepage = "http://world-engine.org";
  
positive.code: , purepng
  , h5py
  , gdal
  }:
  
  buildPythonPackage rec {
  
negative.code: , pythonOlder
  , isPy27
  , fetchFromGitHub
  , noise
  , numpy
  , pyplatec
  