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gh-129393: Make 'sys.platform' return "freebsd" only on FreeBSD witho… by michael-o · Pull Request #129394 · python/cpython · GitHub

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gh-129393: Make 'sys.platform' return "freebsd" only on FreeBSD witho… - #129394

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vstinner merged 1 commit into
python:mainfrom
michael-o:sys.platform-freebsd-only
Jan 31, 2025
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gh-129393: Make 'sys.platform' return "freebsd" only on FreeBSD witho…#129394
vstinner merged 1 commit into
python:mainfrom
michael-o:sys.platform-freebsd-only

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michael-o commented Jan 28, 2025
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…ut major version

Result:

osipovmi@deblndw011x:~/var/Projekte/cpython (main *+>)
$ /tmp/python-3.13/bin/python3
Python 3.14.0a4+ (heads/main-dirty:8e57877e3f4, Jan 28 2025, 10:01:48) [Clang 19.1.5 (https://github.com/llvm/llvm-project.git llvmorg-19.1.5-0-gab4b5a on freebsd
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.platform
'freebsd'
>>>

📚 Documentation preview 📚: https://cpython-previews--129394.org.readthedocs.build/

ghost commented Jan 28, 2025
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All commit authors signed the Contributor License Agreement.

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FWIW: I am a FreeBSD committer as well.

@emaste

michael-o force-pushed the sys.platform-freebsd-only branch from 7cecc55 to 242840a Compare January 28, 2025 09:31

encukou commented Jan 28, 2025

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cc @vstinner as the FreeBSD contact

emaste commented Jan 28, 2025

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LGTM. Hopefully there's not too much fallout.

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LGTM. Hopefully there's not too much fallout.

Me as well, but this should stay on 3.14 and not be backported, even if I'd like to see that.

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

LGTM

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IMO this change is backward compatible since it was recommended to use sys.platform.startswith('freebsd') to check if Python is running on FreeBSD. This code remains correct is sys.platform becomes "freebsd".

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We did the same change on Linux when Linux was upgrade from Linux 2.x to Linux 3.x, and it went fine.

michael-o commented Jan 28, 2025
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IMO this change is backward compatible since it was recommended to use sys.platform.startswith('freebsd') to check if Python is running on FreeBSD. This code remains correct is sys.platform becomes "freebsd".

Oh great, I'd love to see this backported!

michael-o force-pushed the sys.platform-freebsd-only branch from 242840a to b9062bb Compare January 28, 2025 14:59

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Oh great, I'd love to see this backported!

That would be backward incompatible, it's a bad idea. This change can only land into Python 3.14.

michael-o commented Jan 28, 2025
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Oh great, I'd love to see this backported!

That would be backward incompatible, it's a bad idea. This change can only land into Python 3.14.

I am confused, doesn't this contract your previous statement: #129394 (comment)?

emaste commented Jan 28, 2025

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Code "should" be checking startswith but I'd wager there are there cases that use the full string; they shouldn't be broken in an existing release.

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Code "should" be checking startswith but I'd wager there are there cases that use the full string; they shouldn't be broken in an existing release.

That's correct and this is what I have noticed with pyproject.toml.

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Is there anything required from me to merge this one?

michael-o force-pushed the sys.platform-freebsd-only branch from b9062bb to 0f19207 Compare January 28, 2025 19:45
vstinner merged commit e3eba8c into python:main Jan 31, 2025

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Merged, thank you @michael-o.

michael-o deleted the sys.platform-freebsd-only branch January 31, 2025 10:05

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Merged, thank you @michael-o.

Thank you very much for the quick turnaround. Always a pleasure to work with pros!

srinivasreddy pushed a commit to srinivasreddy/cpython that referenced this pull request Feb 7, 2025
…python#129394)

Make 'sys.platform' return "freebsd" only on FreeBSD without major version.
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