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daniel_shub

Member

Registered: 2012-06-21

Posts: 95

How to create a package that depends on an old version of Python?

I maintain (or at least try and maintain) the psychopy AUR package. PsychoPy is a standalone application that is written in Python. The program does not work with Python 3.10 and their response to my bug report was "well we recommend using Python 3.6". It is not fully their fault since PsychoPy has a lot of poorly maintained Python dependencies. How do I go about updating the PKGBUILD to force python36. Is it as simple as adding python36 to depends and changing the

python setup.py

calls to

python39

? I feel like all the Python dependencies will get pulled into the 3.10 install. Would I have to rebuild all the dependencies as 3.6 packages?

I think it may have gotten to the point it is time to delete the package and tell people to pip install it into a virtual environment.

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 14,840

Re: How to create a package that depends on an old version of Python?

Several of psychopy dependencies are in repos and would need to be rebuild against older python versions .

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Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

progandy

Member

Registered: 2012-05-17

Posts: 5,305

Re: How to create a package that depends on an old version of Python?

"well we recommend using Python 3.6".

They should really think about updating that recommendation to at least 3.7. If you want to convert that package to use older python versions, I suggest you use something newer as well.
https://endoflife.date/python
Edit: 3.7 is in the list of supported versions: https://github.com/psychopy/psychopy/bl … /setup.cfg

The development version aims to support 3.10: https://github.com/psychopy/psychopy/blob/dev/setup.cfg

Last edited by progandy (2022-01-29 10:50:46)

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