anchor.diff:  , stdenv
   , bokeh
   , buildPythonPackage
  -, fetchpatch
   , fetchFromGitHub
   , fsspec
   , pytestCheckHook
  
positive.code:     # this test requires features of python3Packages.psutil that are
      # blocked in sandboxed-builds
      "test_auto_blocksize_csv"
    ];
  
    __darwinAllowLocalNetworking = true;
  
negative.code: 
    dontUseSetuptoolsCheck = true;
  
    postPatch = ''
      # versioneer hack to set version of github package
      echo "def get_versions(): return {'dirty': False, 'error': None, 'full-revisionid': None, 'version': '${version}'}" > dask/_version.py
  