bug#73304: Python in relocatable guix pack leads to wrong sys.path

[Ludovic Courtès]

Hello,

Konrad Hinsen <konrad.hinsen@fastmail.net> skribis:

> Konrad Hinsen <konrad.hinsen@fastmail.net> writes:
>
>> I have changed my mind. In the sys.path outputs shown, there are no
>> paths from add-on packages. It's just the Python standard library.
>> Maybe our sitecustomize.py is not run at all, but if it is, it didn't do
>> anything to sys.path. There must be a bug somewhere else.
>
> Our sitecustomize.py is indeed not run at all, so this definitely is a
> different problem.
>
> Evidence: Run Rutherther's example, adding the -v option.  The long
> output is attached, both for "./profile/bin/python3 -v" and "$(realpath
> ./profile/bin/python3) -v". Search for "site-packages" to find the
> interesting parts. If you don't use realpath, large parts of the
> initialization are not done.
>
> There are lots of ../../ in the path shown in these log files. If Python
> resolves them lexically, as the normpath function does, that would
> probably explain most of these issues.

Ouch.  Any idea where to look for solutions here?

Ludo’.