Currently, it's not easy to guess how Python was built just by looking at python -VV output or sys.version.

I propose to enhance sys.version to include more details about how Python was configured for the build:

• debug or release build
• "shared" or "framework" build
• assertions enabled or not
• address/memory/undefined behavior sanitizer
• etc.

It should help me to more quickly identify if a buildbot was built in debug mode or release mode.

It should help to see how Python was optimized: with or without LTO and PGO optimizations?

It should help to quickly have an idea of which ABI is used: the "pystats" ABI is different than the "debug" than the "release" ABI.

Linked PRs

• gh-100086: Add build details to sys.version #100087
• gh-100086: Add build info to test.libregrtest #100093