anchor.diff:      inherit pname version;
       sha256 = "aab9d07575ef599a9c0ae505656e3c03ec753462df3c15742f1f768f2b578f0a";
     };
  -  doCheck = false;
  +
  +  # crashes python
  +  preCheck = ''
  +    rm stytra/tests/test_z_experiments.py
  +  '';
  +
     checkInputs = [
       nose
  -    pytest
  +    pytestCheckHook
       pyserial
     ];
  -
   
     propagatedBuildInputs = [
       opencv3
  
positive.code: , imageio-ffmpeg
  , av
  , nose
  , pytest
  , pyserial
  , arrayqueues
  , colorspacious
  
negative.code: { lib, buildPythonPackage, fetchPypi, isPy3k
  , opencv3
  , pyqt5
  , pyqtgraph
  