[Matplotlib-users] [matplotlib-devel] PyQt4 in Matplotlib v2.0.0

[Paul Hobson]

It appears that the build of matplotlib in conda-forge does not require
pyqt5:
https://github.com/conda-forge/matplotlib-feedstock/blob/master/recipe/meta.yaml

So in your case, I would do:

conda remove pyqt5 matplotlib
conda install --channel=conda-forge matplotlib

On Thu, Feb 2, 2017 at 8:48 AM, Benjamin Root <ben.v.root at gmail.com> wrote:

> no, pyqt5 is not a dependency for matplotlib. this looks like a conda
> packaging issue.
>
> Side note: the sourceforge mailing list is deprecated. Please use the
> python.org version instead (you'll have to re-register).
>
> Ben Root
>
>
> On Thu, Feb 2, 2017 at 11:43 AM, Osborn, Raymond <rosborn at anl.gov> wrote:
>
>> I just created a new conda environment with Matplotlib included, and it
>> duly installed matplotlib: 2.0.0-np111py27_0. It installed PyQt5 by
>> default, whereas I need PyQt4, but when I installed PyQt4 (conda install
>> pyqt=4), it automatically downgraded Matplotlib to 1.5.1.
>> --------
>> The following packages will be DOWNGRADED due to dependency conflicts:
>>
>>     matplotlib: 2.0.0-np111py27_0 --> 1.5.1-np111py27_0
>>     pyqt:       5.6.0-py27_2      --> 4.11.4-py27_4
>>     qt:         5.6.2-0           --> 4.8.7-4
>> --------
>> Is PyQt5 really a dependency for Matplotlib v2? I have been testing
>> release candidate versions of Matplotlib v2 without any problem. This will
>> cause headaches to my users who want the latest features.
>>
>> Ray
>> --
>> Ray Osborn, Senior Scientist
>> Materials Science Division
>> Argonne National Laboratory
>> Argonne, IL 60439, USA
>> Phone: +1 (630) 252-9011 <(630)%20252-9011>
>> Email: ROsborn at anl.gov
>>
>>
>>
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>
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