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gh-5073: PEP 831: Clarify build backend flag propagation by pablogsal · Pull Request #5074 · python/peps · GitHub

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gh-5073: PEP 831: Clarify build backend flag propagation - #5074

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gh-5073: PEP 831: Clarify build backend flag propagation#5074
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pablogsal commented Aug 4, 2026

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read-the-docs-community Bot commented Aug 4, 2026

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Documentation build overview

📚 pep-previews | 🛠️ Build #33905008 | 📁 Comparing f729d34 against latest (69a447a)

  🔍 Preview build  

2 files changed
± pep-0764/index.html
± pep-0831/index.html

hugovk reviewed Aug 4, 2026
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Comment thread peps/pep-0831.rst
Comment on lines +566 to +567
Build Backend Guidance
----------------------

hugovk Aug 4, 2026

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

In addition to guidance to build backends, should there be guidance for tools such as cibuildwheel which specify config to build backends?

For example, should they add an option to enable frame pointers in backends, and perhaps make it the default at some point?

pablogsal mentioned this pull request Aug 4, 2026
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savannahostrowski reviewed Aug 5, 2026
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

The clarification here looks right to me. I left a comment on python/cpython#155172; depending on the intended scope there, we may want to reflect its relationship to the future standardized field here.

We'll probably also want to update corresponding CPython docs, since Doc/using/configure.rst still says that the flags "propagate to third-party C extensions through sysconfig".

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Fidget-Spinner Awaiting requested review from Fidget-Spinner Fidget-Spinner will be requested when the pull request is marked ready for review Fidget-Spinner is a code owner

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