anchor.diff:    pname = "kmapper";
     version = "2.0.0";
   
  -  src = fetchPypi {
  -    inherit pname version;
  -    sha256 = "3708d889f96f6bbe89c52000dd9378ca4c35638180ff894b64ebbdfcfe62aab2";
  +  src = fetchFromGitHub {
  +    owner = "scikit-tda";
  +    repo = "kepler-mapper";
  +    rev = "v${version}";
  +    sha256 = "0djm27si2bn18khrbb7rwhflc5ma6g9smhikhk5i1apwn5avm6l4";
     };
   
     propagatedBuildInputs = [
  
positive.code:   ];
  
    checkInputs = [
      pytest
      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";
  
negative.code: { lib
  , buildPythonPackage
  , fetchFromGitHub
  , scikitlearn
  , numpy
  , scipy
  , jinja2
  , pytestCheckHook
  , networkx
  , matplotlib
  , python-igraph
  