anchor.diff:    ];
   
     checkInputs = [
  -    pytest
  +    pytestCheckHook
       networkx
       matplotlib
       python-igraph
       plotly
       ipywidgets
     ];
  -
  -  checkPhase = ''
  -    pytest test --ignore test/test_drawing.py
  -  '';
   
     meta = with lib; {
       description = "Python implementation of Mapper algorithm for Topological Data Analysis";
  
positive.code: { lib
  , buildPythonPackage
  , fetchPypi
  , scikitlearn
  , numpy
  , scipy
  , jinja2
  , pytest
  , networkx
  , matplotlib
  , python-igraph
  
negative.code:   pname = "kmapper";
    version = "2.0.0";
  
    src = fetchFromGitHub {
      owner = "scikit-tda";
      repo = "kepler-mapper";
      rev = "v${version}";
      sha256 = "0djm27si2bn18khrbb7rwhflc5ma6g9smhikhk5i1apwn5avm6l4";
    };
  
    propagatedBuildInputs = [
  