Continuing the work started with
https://fedoraproject.org/wiki/Changes/Python_Extension_Flags, this
change is about further reducing the build and linker flags (CFLAGS
and LDFLAGS) saved internally in the Python interpreter for use by
distutils and other build systems. Compiling non-RPM Python extension
modules will carry only the compiler flags required for binary
compatibility with the interpreter they were built against and not
Fedora specific ones.

Practically that means the only Fedora derived flag will be
-fexceptions and Python will apply its own upstream
hardcoded ones, making the final flag set for a non-RPM compiled
Python extension as follows:

• -Wsign-compare -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DNDEBUG
-fexceptions

Python C extensions built as rpm's will '''not''' be
affected.

The current main Python interpreter on Fedora 39 will be modified
(Python 3.12) and Python 3.6-3.11 will follow.

This change will affect every package that provides support for
extension builders via utilizing the %{extension...flags}
macros which at the time being is only Python.

• Change proposal
• devel-announce post
• devel list discussion
• Owners: @cstratak

Owners, do not implement this work until the FESCo vote has explicitly ended.
The Fedora Program Manager will create a tracking bug in Bugzilla for this Change, which is your indication to proceed.
See the FESCo ticket policy and the Changes policy for more information.

REMINDER: This ticket is for FESCo members to vote on the proposal. Further discussion should happen in the devel list thread linked above.