anchor.diff:  , fetchPypi
   , python
   , buildPythonPackage
  +, cython
   , gfortran
  +, pythran
   , nose
   , pytest
   , pytest-xdist
  
positive.code:   preBuild = ''
      ln -s ${numpy.cfg} site.cfg
    '';
  
  
    # disable stackprotector on aarch64-darwin for now
    #
  
negative.code: 
  buildPythonPackage rec {
    pname = "scipy";
    version = "1.7.1";
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "6b47d5fa7ea651054362561a28b1ccc8da9368a39514c1bbf6c0977a1c376764";
    };
  
    nativeBuildInputs = [ cython gfortran pythran ];
  
    buildInputs = [ numpy.blas pybind11 ];
  
    propagatedBuildInputs = [ numpy ];
  
    checkInputs = [ nose pytest pytest-xdist ];
  
    # Remove tests because of broken wrapper
    prePatch = ''
  