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Bug#1033564: marked as done (pip install changes should be documented)

Your message dated Mon, 03 Apr 2023 13:15:09 -0400
with message-id <87cz4kanvm.fsf@angela.anarc.at>
and subject line Re: Bug#1033564: pip install changes should be documented
has caused the Debian Bug report #1033564,
regarding pip install changes should be documented
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
1033564: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1033564
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: release-notes
Severity: important

Starting in bookworm, the seemingly innocuous command:

    pip3 install foo

... will not work anymore. It will fail with this rather distressing
error:

    $ pip install rsendmail
    error: externally-managed-environment
    
    × This environment is externally managed
    ╰─> To install Python packages system-wide, try apt install
        python3-xyz, where xyz is the package you are trying to
        install.
        
        If you wish to install a non-Debian-packaged Python package,
        create a virtual environment using python3 -m venv path/to/venv.
        Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
        sure you have python3-full installed.
        
        If you wish to install a non-Debian packaged Python application,
        it may be easiest to use pipx install xyz, which will manage a
        virtual environment for you. Make sure you have pipx installed.
        
        See /usr/share/doc/python3.11/README.venv for more information.
    
    note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
    hint: See PEP 668 for the detailed specification.

... and while the error is somewhat self-documented, it would probably
help our users to flag this issue *before* they run the upgrade, and I
believe the release notes are a good place for this.

I am not sure *what* to say exactly. I think I'd give a heads up that
this is happening and show an example of `--break-system-packages` or
preferably how to do this in a virtual env.

It's basically a redux of the above error message, but that can't
assume (say) `/usr/share/doc/python3.11` is available because we
haven't done the upgrade yet.

--- End Message ---
--- Begin Message --- 
On 2023-04-01 22:29:57, James Addison wrote:
> Package: release-notes
> Followup-For: Bug #1033564
> X-Debbugs-Cc: anarcat@debian.org
>
> Hi Antoine - this seems related to - perhaps an extension of? - some discussion
> on Salsa: https://salsa.debian.org/ddp-team/release-notes/-/merge_requests/142
>
> (I'll admit that I don't tend to use 'pipx' either.  I don't know much about it
> though)

Oh yeah, absolutely. Silly me, I even reviewed that MR...

Odd that I didn't find it when I looked in the source... oh well, thanks!

-- 
We must shift America from a needs- to a desires-culture. People must
be trained to desire, to want new things, even before the old have
been entirely consumed. Man's desires must overshadow his needs.
                         - Paul Mazur, Lehman Brothers

--- End Message ---
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