anchor.diff:      six
     ];
   
  -  # augmenters requires a significant increase in packages requires
     checkPhase = ''
  -     pytest ./test --ignore=test/augmenters
  +     pytest ./test
     '';
   
     checkInputs = [ opencv3 pytest ];
  
positive.code: { buildPythonPackage
  , fetchFromGitHub
  , imageio
  , numpy
  , opencv3
  , pytest
  
negative.code: 
    propagatedBuildInputs = [
      imageio
      imagecorruptions
      numpy
      opencv3
      scikitimage
  