python3Packages.stytra: fix tests

diff --git a/stytra/gui/fishplots.py b/stytra/gui/fishplots.py

index 49ef1fe..fd1cc50 100644

--- a/stytra/gui/fishplots.py

+++ b/stytra/gui/fishplots.py

@@ -13,7 +13,7 @@ from lightparam.gui import ParameterGui

 from scipy.ndimage.filters import gaussian_filter1d

-class StreamingPositionPlot(pg.GraphicsWindow):

+class StreamingPosition(pg.GraphicsView):

     """Plot that displays the virtual position of the fish"""

     def __init__(self, *args, data_accumulator, n_points=500, **kwargs):

diff --git a/stytra/utilities.py b/stytra/utilities.py

index f79c4db..feaa7ef 100644

--- a/stytra/utilities.py

+++ b/stytra/utilities.py

@@ -239,7 +239,7 @@ def recursive_update(d, u):

     :return:

     """

     for k, v in u.items():

-        if isinstance(v, collections.Mapping):

+        if isinstance(v, collections.ChainMap):

             d[k] = recursive_update(d.get(k, {}), v)

         else:

             d[k] = v

buildPythonPackage rec {

  pname = "stytra";

  version = "0.8.34";

  format = "setuptools";

  pyproject = true;

  disabled = pythonOlder "3.7";

  src = fetchPypi {

    sha256 = "aab9d07575ef599a9c0ae505656e3c03ec753462df3c15742f1f768f2b578f0a";

  };

  # crashes python

  preCheck = ''

    rm stytra/tests/test_z_experiments.py

  '';

  patches = [

    # https://github.com/portugueslab/stytra/issues/87

    ./0000-workaround-pyqtgraph.patch

  ];

  propagatedBuildInputs = [

    opencv4

    pyserial

  ];

  disabledTestPaths = [

    # Crashes python

    "stytra/tests/test_z_experiments.py"

  ];

  meta = with lib; {

    description = "A modular package to control stimulation and track behaviour";

    homepage = "https://github.com/portugueslab/stytra";