Reverting the incremental GC in Python 3.14 and 3.15

[hugovk (Hugo van Kemenade)]

@tim.one

Not entirely sure what “keep this” means to you. That nothing changes from the first post in the topic?

• 3.14.5 will replace inc gc with the older 3-gen gc.
• 3.15 will have the older 3-gen gc from the start.
• And 3.15,n will stay that way.
• There’s no intent to, e.g., consider a start-up option to allow users to pick which gc to use.
• Any reintroduction of inc gc would require a PEP, and won’t land before 3.16.

Just looking for explicit clarity there, not an argument.

Yep! The plan for 3.14 and 3.15 is still as outlined in the first post: have just the old generational GC available, no build-time or run-time switches.

I don’t want the increased risk and extra complexity of having two GCs and extra options at this stage, especially for 3.14. Also, having for example two GCs in 3.14 and one in 3.13 and 3.15, and maybe something else in 3.16, will make future maintenance harder in the future.

Let’s take our time and plan things properly with a PEP for 3.16 and beyond.