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doc : enhance troubleshooting.rst #397

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Nov 25, 2021
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doc : enhance troubleshooting.rst
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Expand Up @@ -103,3 +103,19 @@ pytest-xvfb
~~~~~~~~~~~

Instead of running Xvfb manually it is possible to use ``pytest-xvfb`` plugin.

Using with other Qt-related packages
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Using Python's Qt modules (``PySide`` or ``PyQt5``) with other packages which
use Qt (e.g. ``cv2``) can result conflict. This is because the latter build
their own Qt and modify the environment variable. This may not raise error
in your local app, but running the tests on CI servers can fail.

In this case, try use the package without Qt dependency. For example, if your
code does not rely on ``cv2``'s Qt feature you can use
``opencv-python-headless`` instead of full ``opencv-python``.

More details can be found in `issue #396`_.

.. _issue #396: https://github.com/pytest-dev/pytest-qt/issues/396