anchor.diff: -{ stdenv
  -, lib
  +{ lib
  +, stdenv
   , buildPythonPackage
   , fetchPypi
   , pythonOlder
  
positive.code:     "sunpy/visualization/colormaps/tests/test_cm.py"
      # requires cdflib package
      "sunpy/timeseries/tests/test_timeseries_factory.py"
    ];
  
    pytestFlagsArray = [
      "--deselect=sunpy/tests/tests/test_self_test.py::test_main_nonexisting_module"
      "--deselect=sunpy/tests/tests/test_self_test.py::test_main_stdlib_module"
    ];
  
    meta = with lib; {
      description = "SunPy: Python for Solar Physics";
      homepage = "https://sunpy.org";
      license = licenses.bsd2;
      maintainers = [ maintainers.costrouc ];
    };
  }
  
negative.code:   };
  
    nativeBuildInputs = [
      astropy-extension-helpers
      setuptools-scm
    ];
  
    propagatedBuildInputs = [
      asdf
      astropy
      astropy-helpers
      beautifulsoup4
      drms
      glymur
      h5netcdf
      matplotlib
      numpy
      pandas
      parfive
      python-dateutil
      scikitimage
      scipy
      sqlalchemy
      towncrier
      tqdm
      zeep
    ];
  
    checkInputs = [
      hypothesis
      pytest-astropy
      pytest-mock
      pytestCheckHook
    ];
  
    # darwin has write permission issues
  