anchor.diff:      export HOME=$(mktemp -d)
     '';
   
  +  # darwin has write permission issues
  +  doCheck = stdenv.isLinux;
  +  # ignore documentation tests
     checkPhase = ''
  -    pytest sunpy -k "not test_rotation"
  +    pytest sunpy -k 'not rst'
     '';
   
     meta = with lib; {
  
positive.code: { lib
  , buildPythonPackage
  , fetchFromGitHub
  , numpy
  
negative.code: 
  buildPythonPackage rec {
    pname = "sunpy";
    version = "1.0.6";
    disabled = pythonOlder "3.6";
  
    src = fetchFromGitHub {
      owner = "sunpy";
      repo = pname;
      rev = "v${version}";
      sha256 = "0j2yfhfxgi95rig8cfp9lvszb7694gq90jvs0xrb472hwnzgh2sk";
    };
  
    propagatedBuildInputs = [
  