python / python/peps

PEP 831: Clarify build backend flag propagation

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Description

PEP 831 currently overstates how CPython build flags propagate through generic build backends. Update the PEP to distinguish Setuptools and deliberate sysconfig consumers from other PEP 517 backends, and document build-details.json as the appropriate future standardized interface.

Context: https://discuss.python.org/t/pep-831-frame-pointers-everywhere-enabling-system-level-observability-for-python/106958/7

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reading PEP 831 and the linked Python discussion, focusing on its claims about build flag propagation. Revise the PEP to distinguish Setuptools and deliberate sysconfig consumers from other PEP 517 backends, and document build-details.json as the future standardized interface. Done means these distinctions are stated accurately in the PEP.

Written by the indexing model from the issue text.

Assessment

Tech stack
json, python
Domain
build-system, documentation
Issue type
Documentation
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
72/100

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