GNU bug report logs - #46569
python can't find internal pip modules in environment from manifest

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#46569: closed (python can't find internal pip modules in
 environment from manifest)
Date: Thu, 18 Feb 2021 21:19:02 +0000

[Message part 1 (text/plain, inline)]

Your message dated Thu, 18 Feb 2021 16:18:47 -0500
with message-id <87h7m9ulag.fsf <at> gmail.com>
and subject line Re: bug#46569: python can't find internal pip modules in environment from manifest
has caused the debbugs.gnu.org bug report #46569,
regarding python can't find internal pip modules in environment from manifest
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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46569: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=46569
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Contact help-debbugs <at> gnu.org with problems

[Message part 2 (message/rfc822, inline)]

From: Jelle Licht <jlicht <at> fsfe.org>
To: bug-guix <at> gnu.org
Subject: python can't find internal pip modules in environment from manifest
Date: Tue, 16 Feb 2021 21:58:20 +0100

Python can not load all pip-related python modules when loaded from a
manifest file, yet seems to work fine when loaded 'directly' as part of
a `guix environment'-invocation.


Provided that we have a file in `hi.py':
--8<---------------cut here---------------start------------->8---
import pip
print("halfwaypoint")
import pip._internal.index.package_finder
print("I made it!")
--8<---------------cut here---------------end--------------->8---

and a `manifest.scm' with:

--8<---------------cut here---------------start------------->8---
(use-modules (gnu) (guix packages)
	     (gnu packages python)
	     (gnu packages python-xyz))

(packages->manifest (list python python-pip))
--8<---------------cut here---------------end--------------->8---

I can get the expected output by running:
`guix environment --pure --ad-hoc python python-pip -- python3 hi.py' =>
> halfwaypoint
> I made it!

Yet, when I run the following:
`guix environment --pure -m manifest.scm -- python3 hi.py' =>

--8<---------------cut here---------------start------------->8---
halfwaypoint
Traceback (most recent call last):
  File "hi.py", line 4, in <module>
    import pip._internal.index.package_finder
  File "/gnu/store/4m5vhlq61qnj36rq60l83xcmgj3mx92j-profile/lib/python3.8/site-packages/pip/_internal/__init__.py", line 40, in <module>
    from pip._internal.cli.autocompletion import autocomplete
  File "/gnu/store/4m5vhlq61qnj36rq60l83xcmgj3mx92j-profile/lib/python3.8/site-packages/pip/_internal/cli/autocompletion.py", line 8, in <module>
    from pip._internal.cli.main_parser import create_main_parser
  File "/gnu/store/4m5vhlq61qnj36rq60l83xcmgj3mx92j-profile/lib/python3.8/site-packages/pip/_internal/cli/main_parser.py", line 11, in <module>
    from pip._internal.commands import (
  File "/gnu/store/4m5vhlq61qnj36rq60l83xcmgj3mx92j-profile/lib/python3.8/site-packages/pip/_internal/commands/__init__.py", line 6, in <module>
    from pip._internal.commands.completion import CompletionCommand
  File "/gnu/store/4m5vhlq61qnj36rq60l83xcmgj3mx92j-profile/lib/python3.8/site-packages/pip/_internal/commands/completion.py", line 6, in <module>
    from pip._internal.cli.base_command import Command
  File "/gnu/store/4m5vhlq61qnj36rq60l83xcmgj3mx92j-profile/lib/python3.8/site-packages/pip/_internal/cli/base_command.py", line 26, in <module>
    from pip._internal.index import PackageFinder
ImportError: cannot import name 'PackageFinder' from 'pip._internal.index' (/gnu/store/4m5vhlq61qnj36rq60l83xcmgj3mx92j-profile/lib/python3.8/site-packages/pip/_internal/index/__init__.py)
--8<---------------cut here---------------end--------------->8---

Why is there a difference in the first place? Shouldn't both approaches work?

- Jelle

[Message part 3 (message/rfc822, inline)]

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Jelle Licht <jlicht <at> fsfe.org>
Cc: 46569-done <at> debbugs.gnu.org
Subject: Re: bug#46569: python can't find internal pip modules in
 environment from manifest
Date: Thu, 18 Feb 2021 16:18:47 -0500

Hello Jelle,

Jelle Licht <jlicht <at> fsfe.org> writes:

> Python can not load all pip-related python modules when loaded from a
> manifest file, yet seems to work fine when loaded 'directly' as part of
> a `guix environment'-invocation.
>
>
> Provided that we have a file in `hi.py':
>
> import pip
> print("halfwaypoint")
> import pip._internal.index.package_finder
> print("I made it!")

The problem seems to be related to the version of pip used.  The one
bundled with our Python on master is:

$ guix environment --pure --ad-hoc python -- pip3 --version
pip 19.2.3 from
/gnu/store/pw65c67dmzr2m9wbkj5mskhm6ljk6xal-profile/lib/python3.8/site-packages/pip
(python 3.8)

and

$ guix environment --pure --ad-hoc python -- python3 -c 'import pip._internal.index.package_finder'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named
'pip._internal.index.package_finder'; 'pip._internal.index' is not a
package

but

$ guix environment --pure --ad-hoc python python-pip -- pip3 --version
pip 20.2.4 from
/gnu/store/d75bwzbla5ybhs0mdw80qy94mawnhhsw-python-pip-20.2.4/lib/python3.8/site-packages/pip
(python 3.8)

and

$ guix environment --pure --ad-hoc python python-pip -- python3 -c 'import pip._internal.index.package_finder'
$ echo $?
0

HTH!

Closing.

Maxim

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