Bug#854496: python-qtpy: FTBFS randomly (failing tests)

[Ghislain Vaillant]

Hi Santiago,

A (potential) fix for this would be to try out testing with pytest-xvfb 
(which I have recently packaged, so only in unstable for now), instead 
of calling xvfb-run manually.

pytest-xvfb is supposed to provide a more robust setup for tests 
requiring xvfb. I have had successful results with packages such as 
src:spyder-unittest. After the freeze (since pytest-xvfb will not be 
available in Stretch), I intend to switch both src:python-qtpy and 
src:python-qtawesome to using pytest-xvfb for testing.

We'll see whether this addresses the problem you reported. Are you happy 
with this plan?

Cheers,
Ghis