Package: python-matplotlib
Version: 2.2.3-4
Severity: important
Dear Maintainers,
Since the update to python-matplotlib2, the WxAgg backend is unable to find any
fonts. The following code used to work just fine (and works fine in buster
with python-matplotlib 2.2.2-4+b1):
# apt-get install python-matplotlib python-wxgtk3.0
# python -c 'import matplotlib.backends.backend_wxagg.FigureCanvasWxAgg'
/usr/lib/python2.7/dist-packages/matplotlib/__init__.py:1005: UserWarning:
could not find rc file; returning defaults
warnings.warn(message)
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/usr/lib/python2.7/dist-packages/matplotlib/backends/backend_wxagg.py",
line 11, in <module>
from .backend_agg import FigureCanvasAgg
File "/usr/lib/python2.7/dist-packages/matplotlib/backends/backend_agg.py",
line 36, in <module>
from matplotlib.backend_bases import (
File "/usr/lib/python2.7/dist-packages/matplotlib/backend_bases.py", line 53,
in <module>
from matplotlib import (
File "/usr/lib/python2.7/dist-packages/matplotlib/textpath.py", line 17, in
<module>
import matplotlib.font_manager as font_manager
File "/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py", line
1472, in <module>
_rebuild()
File "/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py", line
1453, in _rebuild
fontManager = FontManager()
File "/usr/lib/python2.7/dist-packages/matplotlib/font_manager.py", line
1057, in __init__
paths = [os.path.join(rcParams['datapath'], 'fonts', 'ttf'),
File "/usr/lib/python2.7/posixpath.py", line 70, in join
elif path == '' or path.endswith('/'):
AttributeError: 'NoneType' object has no attribute 'endswith'
The WxAgg backend is used by python-bumps and sasmodels; the inability to
import the module means that these packages FTBFS and their autopkgtest tests
fail.
I can't see any changes in the packaging that would cause this but I also
can't see any relevant changes in the upstream backend or font handling code.
There are some changes in the initialisation of the matplotlib config but I
don't see any documented changes in the upstream changelog for requiring
initialisation of rcParams prior to importing backends.
If changes in the rdeps are needed, I can make them, but hints would be
gratefully received.
thanks
Stuart
Comparison logs from ci.d.n:
buster
https://ci.debian.net/data/autopkgtest/testing/amd64/s/sasview/1563832/log.gz
unstable
https://ci.debian.net/data/autopkgtest/testing/amd64/s/sasview/1563833/log.gz
-- System Information:
Debian Release: buster/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.0-8-amd64 (SMP w/4 CPU cores)
Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=C (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: unable to detect
Versions of packages python-matplotlib depends on:
ii libc6 2.28-3
ii libfreetype6 2.9.1-3
ii libgcc1 1:8.2.0-13
ii libjs-jquery 3.2.1-1
ii libjs-jquery-ui 1.12.1+dfsg-5
ii libpng16-16 1.6.36-1
ii libstdc++6 8.2.0-13
ii python 2.7.15-3
ii python-backports.functools-lru-cache 1.5-1
ii python-cycler 0.10.0-1
ii python-dateutil 2.7.3-1
ii python-kiwisolver 1.0.1-2+b1
ii python-matplotlib2-data 2.2.3-4
ii python-numpy [python-numpy-abi9] 1:1.16.0~rc1-2
ii python-pyparsing 2.2.0+dfsg1-2
ii python-six 1.12.0-1
ii python-subprocess32 3.5.3-1
ii python-tz 2018.7-1
ii zlib1g 1:1.2.11.dfsg-1
Versions of packages python-matplotlib recommends:
ii python-pil 5.3.0-1
ii python-tk 2.7.15-1+b1
Versions of packages python-matplotlib suggests:
pn dvipng <none>
pn ffmpeg <none>
pn ghostscript <none>
pn gir1.2-gtk-3.0 <none>
pn inkscape <none>
pn ipython <none>
ii librsvg2-common 2.44.10-1
pn python-cairocffi <none>
pn python-configobj <none>
pn python-excelerator <none>
pn python-gi <none>
pn python-gobject-2 <none>
pn python-matplotlib2-doc <none>
pn python-nose <none>
pn python-qt4 <none>
pn python-scipy <none>
pn python-sip <none>
pn python-tornado <none>
pn python-traits <none>
ii python-wxgtk3.0 3.0.2.0+dfsg-8
pn texlive-extra-utils <none>
pn texlive-latex-extra <none>
pn ttf-staypuft <none>
-- no debconf information
