anchor.diff:  
     nativeBuildInputs = [ cmake cython pkg-config setuptools-scm ];
     propagatedBuildInputs = [ numpy six ];
  -  checkInputs = [ hypothesis pandas pytestCheckHook pytest-lazy-fixture ];
  +  checkInputs = [
  +    hypothesis
  +    pandas
  +    pytestCheckHook
  +    pytest-lazy-fixture
  +  ];
   
     PYARROW_BUILD_TYPE = "release";
   
  
positive.code: { lib, stdenv, buildPythonPackage, python, isPy3k, arrow-cpp, cmake, cython, hypothesis, numpy, pandas, pytestCheckHook, pytest-lazy-fixture, pkg-config, setuptools-scm, six }:
  
  let
    zero_or_one = cond: if cond then 1 else 0;
  
negative.code:     maintainers = with maintainers; [ veprbl cpcloud ];
    };
  }
  
  
  