On Thu, May 26, 2022 at 12:10 AM Owen Taylor <otay...@redhat.com> wrote:
>
> [ At Miro's request, resending this to python-devel so the discussion can be 
> public ]
>
> Hi Miro -
>
> When rebuilding a package to include in a Flatpak, we want to install 
> *everything* under prefix=/app - that includes Python modules. (Paths will be 
> adjusted properly when running the Flatpak.)
>
> For years, the way we did that is by installing a 
> /usr/lib64/python3.10/distutils/distutils.cfg:
> ===
> [install]
> prefix=/app
> ===
>
> This is part of the flatpak-rpm-macros package that gets installed in the 
> buildroot for Flatpak rebuilds
>
> In Fedora 36, this no longer works for 'pip install' - it seems that pip 
> unconditionally uses 'sysconfig' rather than 'distutils' to determine install 
> paths for Python >= 3.10.
>
> I see that you filed https://github.com/pypa/pip/issues/10647 which landed in 
> pip for pip-22, but Fedora 36 / pip-21 this isn't present? And in any case, 
> that seems like it's something for 'sudo pip install' rather than package 
> installation. I actually don't really follow how the Python macros are 
> getting things installed into /usr/lib rather than /usr/local/lib.
>
> Any advice about how we can make the installation into /app work? Hopefully 
> in a future-proof way...
>

What's stopping us from upgrading pip in F36? It's packaged separately
from Python itself already...



-- 
真実はいつも一つ!/ Always, there's only one truth!
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