anchor.diff:  , pyyaml
   , scipy
   , toolz
  +, zarr
   }:
   
   buildPythonPackage rec {
     pname = "dask";
  -  version = "2022.05.0";
  +  version = "2022.05.2";
     format = "setuptools";
   
     disabled = pythonOlder "3.7";
  
positive.code:     "--reruns 3"
      # Don't run tests that require network access
      "-m 'not network'"
    ];
  
    disabledTests = lib.optionals stdenv.isDarwin [
      # Test requires features of python3Packages.psutil that are
      # blocked in sandboxed-builds
      "test_auto_blocksize_csv"
    ];
  
    __darwinAllowLocalNetworking = true;
  
negative.code:   passthru.optional-dependencies = {
      array = [
        numpy
      ];
      complete = [
        distributed
      ];
      dataframe = [
        numpy
  