Comment # 6 on bug 1178453 from Axel Braun

Strange situation: The pycache is removed (and in between removed from upstream
as well):
[   26s] /home/abuild/rpmbuild/BUILD/gnuhealth-client-3.6.9
[   26s] + cd tryton/plugins
[   26s] + tar -xzvf
/home/abuild/rpmbuild/SOURCES/gnuhealth_plugin_camera-latest.tar.gz
[   26s] gnuhealth_plugin_camera-3.6.0/
[   26s] gnuhealth_plugin_camera-3.6.0/__pycache__/
[   26s] gnuhealth_plugin_camera-3.6.0/__pycache__/__init__.cpython-37.pyc
[   26s] gnuhealth_plugin_camera-3.6.0/README
[   26s] gnuhealth_plugin_camera-3.6.0/version
[   26s] gnuhealth_plugin_camera-3.6.0/__init__.py
[   26s] gnuhealth_plugin_camera-3.6.0/COPYING
[   26s] + tar -xzvf
/home/abuild/rpmbuild/SOURCES/gnuhealth_plugin_crypto-latest.tar.gz
[   26s] gnuhealth_plugin_crypto-3.6.0/
[   26s] gnuhealth_plugin_crypto-3.6.0/__pycache__/
[   26s] gnuhealth_plugin_crypto-3.6.0/__pycache__/__init__.cpython-37.pyc
[   26s] gnuhealth_plugin_crypto-3.6.0/version
[   26s] gnuhealth_plugin_crypto-3.6.0/__init__.py
[   26s] gnuhealth_plugin_crypto-3.6.0/doc/
[   26s] gnuhealth_plugin_crypto-3.6.0/doc/index.rst
[   26s] + tar -xzvf
/home/abuild/rpmbuild/SOURCES/gnuhealth_plugin_frl-latest.tar.gz
[   26s] gnuhealth_plugin_frl-3.6.1/
[   26s] gnuhealth_plugin_frl-3.6.1/icons/
[   26s] gnuhealth_plugin_frl-3.6.1/icons/gnuhealth_icon.svg
[   26s] gnuhealth_plugin_frl-3.6.1/icons/federation.svg
[   26s] gnuhealth_plugin_frl-3.6.1/version
[   26s] gnuhealth_plugin_frl-3.6.1/__init__.py
[   26s] gnuhealth_plugin_frl-3.6.1/doc/
[   26s] gnuhealth_plugin_frl-3.6.1/doc/index.rst
[   26s] + mv gnuhealth_plugin_camera-3.6.0 camera
[   26s] + mv gnuhealth_plugin_crypto-3.6.0 crypto
[   26s] + mv gnuhealth_plugin_frl-3.6.1 frl
[   26s] + rm -rf camera/__pycache__ crypto/__pycache__
[   26s] + RPM_EC=0

Nevertheless, the installation (and start) works on local builds and on my
local TW-machine, but fails in openQA with the same error.
gapi test in opencv are disabled - is this maybe related?