anchor.diff:      pytest
     ];
   
  +  # disable tests on darwin, because it requires a framework build of Python
  +  doCheck = !stdenv.isDarwin;
  +
     checkPhase = ''
       export HOME=$(mktemp -d)
       mkdir -p $HOME/.config/matplotlib
  
positive.code:     sha256 = "7006e63bf1ca9c50bea3d189c0f862751a16ce40bb373197b218f57af5b837c0";
    };
  
    propagatedBuildInputs = [
      matplotlib
      nose
  
negative.code:     pytest
    '';
  
    meta = with stdenv.lib; {
      description = "Pytest plugin to help with testing figures output from Matplotlib";
      homepage = https://github.com/matplotlib/pytest-mpl;
      license = licenses.bsd3;
  