anchor.diff:      owner = "arviz-devs";
       repo = pname;
       rev = "v${version}";
  -    hash = "sha256-5P6EXXAAS1Q2eNQuj/5JrDg0lPHfA5K4WaYfKaaXm9s=";
  +    hash = "sha256-DGTGUMnkEQcwGR44WhmBpTBMcRcAtVIpM4YVnnlakE8=";
     };
   
     propagatedBuildInputs = [
  
positive.code:     "test_plot_separation"
      "test_plot_trace_legend"
      "test_cov"
    ];
  
    pythonImportsCheck = [
  
negative.code: 
  buildPythonPackage rec {
    pname = "arviz";
    version = "0.13.0";
    format = "setuptools";
  
    disabled = pythonOlder "3.7";
  