anchor.diff:        --replace "cmdclass=versioneer.get_cmdclass()," ""
     '';
   
  -  # dask test suite with consistently fail when using high core counts
  -  preCheck = ''
  -    NIX_BUILD_CORES=$((NIX_BUILD_CORES > 8 ? 8 : NIX_BUILD_CORES))
  -  '';
  -
  -  pytestFlagsArray = [ "-n $NIX_BUILD_CORES" ];
  +  #pytestFlagsArray = [ "-n $NIX_BUILD_CORES" ];
   
     disabledTests = [
       "test_argwhere_str"
  
positive.code: 
    checkInputs = [
      pytestCheckHook
      pytest_xdist # takes >10mins to run single-threaded
    ];
  
    dontUseSetuptoolsCheck = true;
  
negative.code: , dill
  , pandas
  , partd
  }:
  
  buildPythonPackage rec {
  