anchor.diff:      future numpy pillow scipy scikitlearn scikitimage threadpoolctl
     ];
   
  -  checkInputs = [ pytest unittest2 ];
  -
  -  checkPhase = "pytest tests";
  +  checkInputs = [ pytestCheckHook unittest2 ];
   
     meta = {
       description = "2D and 3D image data augmentation for deep learning";
  
positive.code: 
  buildPythonPackage rec {
    pname = "batchgenerators";
    version = "0.20.0";
  
    disabled = isPy27;
  
  
negative.code:     owner = "MIC-DKFZ";
      repo = pname;
      rev = "v${version}";
      sha256 = "1f91yflv9rschyl5bnfn735hp1rxrzcxkx18aajmlzb067h0ip8m";
  
    };
  
    patches = [
      # lift Pillow bound; should be merged in next release
      (fetchpatch {
        url = "https://github.com/MIC-DKFZ/batchgenerators/pull/59.patch";
        sha256 = "171b3dm40yn0wi91m9s2nq3j565s1w39jpdf1mvc03rn75i8vdp0";
  