anchor.diff:      pandas
       scikit-learn
       scipy
  -    toolz
  -  ];
  +  ] ++ dask.optional-dependencies.array
  +    ++ dask.optional-dependencies.dataframe;
   
     # has non-standard build from source, and pypi doesn't include tests
     doCheck = false;
  
positive.code: , scikit-learn
  , scipy
  , setuptools-scm
  , toolz
  }:
  
  buildPythonPackage rec {
  
negative.code:   ];
  
    propagatedBuildInputs = [
      dask-glm
      distributed
      multipledispatch
  