anchor.diff:  , stdenv
   , buildPythonPackage
   , python
  -, isPy3k
  +, pythonOlder
   , arrow-cpp
   , cffi
   , cloudpickle
  
positive.code:     ulimit -n 1024
    '';
  
    pythonImportsCheck = [ "pyarrow" ] ++ map (module: "pyarrow.${module}") ([
      "compute"
      "csv"
      "dataset"
  
negative.code:     "--deselect=pyarrow/tests/test_fs.py::test_s3_real_aws"
      "--deselect=pyarrow/tests/test_fs.py::test_s3_real_aws_region_selection"
      "--deselect=pyarrow/tests/test_fs.py::test_s3_options"
      # Flaky test
      "--deselect=pyarrow/tests/test_flight.py::test_roundtrip_errors"
    ] ++ lib.optionals stdenv.isDarwin [
      # Requires loopback networking
      "--deselect=pyarrow/tests/test_ipc.py::test_socket_"
  