bug#30121: python-matplotlib broken.

[Konrad Hinsen]

On 15/01/2018 14:04, Fis Trivial wrote:

* Steps to reproduce:
$ python
from matplotlib import pyplot

Do you have a matplotlibrc file that sets a Qt-based backend? The 
default backend is TkAgg, which does not require Qt. (Note that PySide 
is a Qt interface for Python.)

Konrad.