Description

mohd-akram

opened on Oct 16, 2026

Issue body actions

Bug report

Actual:

$ python3 -c 'import sysconfig; print(sysconfig.get_platform())'
freebsd-15.1-RELEASE-p4-amd64

Expected:

$ python3 -c 'import sysconfig; print(sysconfig.get_platform())'
freebsd-15.1-amd64

See for example the value from config.guess in autoconf:

$ ./config.guess
x86_64-unknown-freebsd15.1

CPython versions tested on:

3.16, 3.14

Operating systems tested on:

Other

Linked PRs

• gh-159550: Fix FreeBSD version in get_platform() #159554

Activity

1. mohd-akram

   added

   type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

   on Oct 16, 2026
2. aisk

   added

   OS-freebsd

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

   on Oct 16, 2026
3. mohd-akram

   added 2 commits that reference this issue on Oct 16, 2026

   pythongh-159550: Fix FreeBSD version in get_platform()

   a952a3a

   pythongh-159550: Fix FreeBSD version in get_platform()

   d040bb6
4. gvanrossum commented on Oct 16, 2026

   

   gvanrossum

   on Oct 16, 2026

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   @mohd-akram
   Why don't you want it to reveal the patch level? That seems like a potentially useful piece of information (at least for a human).
5. mohd-akram commented on Oct 16, 2026

   

   mohd-akram

   on Oct 16, 2026

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   @gvanrossum This function is used by pip to determine the platform tag. Because it changes with every patch update, the wheels are deemed incompatible even though FreeBSD ABI is stable across patch levels. I noticed this issue because pip kept rebuilding certain Rust packages (which is very slow and resource intensive on a modest server) rather than obtaining them from the cache (because the name in the cache encoded the patch version). Someone had mentioned this issue previously on the FreeBSD mailing list. For humans, it is still available via os.uname() which is the source.
6. gvanrossum commented on Oct 16, 2026

   

   gvanrossum

   on Oct 16, 2026

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   Gotcha! And it looks like pip shouldn't be doing FreeBSD-specific editing of that string, I agree.

   Reacted by Mohamed Akram
7. kevinprimeraquecreo-stack

   added this to Project_VKand Project_VKon Oct 18, 2026
8. github-project-automation

   moved this to Todo in Project_VKon Oct 18, 2026

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