anchor.diff:  , cloudpickle
   , distributed
   , fetchFromGitHub
  +, fetchpatch
   , fsspec
   , jinja2
   , numpy
  
positive.code: 
  buildPythonPackage rec {
    pname = "dask";
    version = "2021.09.1";
    format = "setuptools";
  
    disabled = pythonOlder "3.7";
  
negative.code:     owner = "dask";
      repo = pname;
      rev = version;
      sha256 = "07ysrs46x5w8rc2df0j06rsw58ahcysd6lwjk5riqpjlpwdfmg7p";
    };
  
    patches = [
      # remove with next bump
      (fetchpatch {
        name = "fix-tests-against-distributed-2021.10.0.patch";
        url = "https://github.com/dask/dask/commit/cd65507841448ad49001cf27564102e2fb964d0a.patch";
        includes = [ "dask/tests/test_distributed.py" ];
        sha256 = "1i4i4k1lzxcydq9l80jyifq21ny0j3i47rviq07ai488pvx1r2al";
      })
    ];
  
    propagatedBuildInputs = [
      cloudpickle
  