anchor.diff:      numba
       llvmlite
       joblib
  +  ];
  +
  +  checkInputs = [
  +    nose
     ];
   
     checkPhase = ''
  
positive.code: { lib
  , buildPythonPackage
  , fetchPypi
  , fetchpatch
  , nose
  , scikitlearn
  , scipy
  
negative.code: 
  buildPythonPackage rec {
    pname = "pynndescent";
    version = "0.5.2";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "0w87c2v0li2rdbx6qfc2lb6y6bxpdy3jwfgzfs1kcr4d1chj5zfr";
    };
  
    propagatedBuildInputs = [
      scikitlearn
  