--- Begin Message ---
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Subject: |
python can't find internal pip modules in environment from manifest |
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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
--- End Message ---
--- Begin Message ---
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Subject: |
Re: bug#46569: python can't find internal pip modules in environment from manifest |
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Date: |
Thu, 18 Feb 2021 16:18:47 -0500 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) |
Hello Jelle,
Jelle Licht <jlicht@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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