Description

assignee = None
closed_at = None
created_at = <Date 2021-02-18.11:13:38.696>
labels = ['3.8']
title = 'platform.libc_ver() returns no information on Alpine Linux'
updated_at = <Date 2021-07-05.08:01:18.532>
user = 'https://github.com/thedrow'

activity = <Date 2021-07-05.08:01:18.532>
actor = 'The Compiler'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = []
creation = <Date 2021-02-18.11:13:38.696>
creator = 'Omer.Katz'
dependencies = []
files = []
hgrepos = []
issue_num = 43248
keywords = []
message_count = 2.0
messages = ['387211', '387396']
nosy_count = 3.0
nosy_names = ['The Compiler', 'Omer.Katz', 'corona10']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = None
url = 'https://bugs.python.org/issue43248'
versions = ['Python 3.8']

Activity

1. thedrow commented on Feb 18, 2021

   

   thedrowmannequin

   on Feb 18, 2021

   MannequinAuthor

   More actions

   When calling platform.libc_ver() on Alpine I get the following tuple: ('', '')

   Instead, I expect to get ('muslc', '<version number>') or an exception if the libc type & version cannot be detected.
   If one of them is not detected, the returned value shouldn't be an empty string but None.
   The current API is not what most people would expect it to be.
   This is verified on Python 3.8 since that's the latest one available on Alpine.

   This code reliably detects musl libc and its version: https://github.com/lovell/detect-libc/blob/master/lib/detect-libc.js

   I'd be happy to contribute a PR if needed.
2. thedrow

   added

   3.8 (EOL)end of lifeend of life

   on Feb 18, 2021
3. corona10 commented on Feb 20, 2021

   

   corona10

   on Feb 20, 2021

   Member

   More actions

   @Omer.Katz

   This issue should be fixed, feel free to submit the PR
4. ezio-melotti

   transferred this issue fromon Apr 10, 2022
5. mara004 commented on Apr 30, 2022

   

   mara004

   on Apr 30, 2022

   Contributor

   More actions

   Any progress on this? Is there any other function to check whether the host system is using musl or glibc?
6. mara004

   added a commit that references this issue on Apr 30, 2022

   Adapt musl recognition

   9350d46
7. mara004 commented on Jan 19, 2023

   

   mara004

   on Jan 19, 2023

   Contributor

   More actions

   How about just integrating packaging's musl detection code into the standard library?
   https://github.com/pypa/packaging/blob/main/src/packaging/_musllinux.py

   (Actually, I'm a bit surprised this wasn't done directly on the implementation of PEP 656.)

   Reacted by Manuel Kaufmann
8. iritkatriel

   added

   stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

   on Dec 1, 2023
9. encukou

   added

   OS-unsupported

   on Mar 8, 2024
10. github-project-automation

    added this to Unsupported platformson Mar 8, 2024
11. jollaitbot

    added a commit that references this issue on Oct 30, 2024

    fix[util]: remove is_libc_musl

    144eb3f
12. jollaitbot

    added a commit that references this issue on Apr 15, 2025

    fix[util]: remove is_libc_musl

    48f98ed
13. zware commented on Apr 28, 2025

    

    zware

    on Apr 28, 2025

    Member

    More actions

    Strictly speaking, this issue has been fixed by GH-131313. However, GH-103784 is still open which may or may not improve on the situation, and the commit message from GH-131313 mentions that WASI/Emscripten support is still lacking.
14. sertonix commented on Jul 17, 2025

    

    sertonix

    on Jul 17, 2025

    More actions

    This issue also causes platform.platform() to return a nonsensical output: Linux-6.15.6-0-stable-x86_64-with (The -with doesn't makes sense when libcname+libcversion is empty)

    Edit: tested a version without #131313 , probably works fine with
15. zware commented on Sep 6, 2025

    

    zware

    on Sep 6, 2025

    Member

    More actions

    ~/cpython $ ./python
    Python 3.15.0a0 (heads/main:c117b03, Sep  6 2025, 22:03:51) [GCC 14.2.0] on linux
    Type "help", "copyright", "credits" or "license" for more information.
    >>> import platform
    >>> platform.platform()
    'Linux-6.15.10-200.fc42.x86_64-x86_64-with-musl1.2.5'
    >>> platform.libc_ver()
    ('musl', '1.2.5')

    Reacted by mara004
16. zware

    closed this as completedon Sep 6, 2025
17. github-project-automation

    moved this to Done in Unsupported platformson Sep 6, 2025

Issue actions