Managing Conflicting Versions of PySide

[Tim Crowson]

So we're wanting to use PySide in several tools that have nothing to do with Maya (other DCCs, standalone tools, etc.) and currently, we all load common Python libraries via a shared network location and a PYTHONPATH environment variable in Windows (not in Maya.env). The version of Pyside we'd like to use is 1.2.2.

Well Maya 2015 doesn't like that one bit. It will load PySide 1.2.2 instead of its own internal version (which seems to be 1.2.0), and apparently Xgen just doesn't know what to do with that and this fails to load.

Maya.env's version of PYTHONPATH seems to act as an 'append' rather than a replacement. Is there a way to tell Maya to flat out ignore the PYTHONPATH envar in our Windows settings, and only use the one from Maya.env?

Flippin' version conflicts... I swear....

-Tim Crowson

Magnetic Dreams

[Tim Crowson]

Ah! I can just remove that path from sys.path in userSetup.py.... That's one odd but feasible option...

[Justin Israel]

Yea that seems like the option you have to take. It is either modifying it via the userSetup.py or having to use a custom maya launch wrapper (which is what we do at our studio). 

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[Tony Barbieri]

We also use a wrapper.  We also stopped using PYTHONPATH for anything but the path to our sitecustomize.py file.  One issue we saw is everything added to PYTHONPATH would be added before the standard python libraries.  This caused pretty severe slowdowns when doing imports because those network locations would be scanned before scanning the python install directories.  Instead we have a different variable, PSYOP_PYTHONPATH, which we use and add to the sys.path in our sitecustomize.py using site.addsitedir.  A bit more work...Another happy side effect is Maya's PySide would be found before our globally installed version.

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Tony