anchor.diff:    version = "0.5.6";
     format = "setuptools";
   
  +  disabled = pythonOlder "3.6";
  +
     src = fetchPypi {
       inherit pname version;
  -    sha256 = "sha256-YfsxiFuqxGnWeTPix8k1tu3rsG7kmOLw+d/JfFnTclw=";
  +    hash = "sha256-YfsxiFuqxGnWeTPix8k1tu3rsG7kmOLw+d/JfFnTclw=";
     };
   
     propagatedBuildInputs = [
  
positive.code: , scikit-learn
  , scipy
  , pytestCheckHook
  }:
  
  buildPythonPackage rec {
  
negative.code:     pytestCheckHook
    ];
  
    pythonImportsCheck = [
      "pynndescent"
    ];
  
    meta = with lib; {
      description = "Nearest Neighbor Descent";
      homepage = "https://github.com/lmcinnes/pynndescent";
  