Remove static PyTypeObject* definitions and move static data to _selectstate to help improve compatibility w/ subinterpreters and re-use by alternate implementations.

Why do you describe these issues (this one, #38069, #38071-#38076, maybe more) as making the module PEP 384 compatible? There is no reason to make the built-in modules stick to the limited API, and it doesn't look like you're doing that in any event (among other things, pretty sure Argument Clinic generated code isn't limited API compatible yet, though that might be changing?).

Seems like the main (only?) change you're making is to convert all static types to dynamic types. Which is fine, if it's necessary for PEP 554, but it seems only loosely related to PEP 384 (which defined mechanisms for "statically" defining dynamic heap types, but that wasn't the main thrust).

New changeset f919054e539a5c1afde1b31c9fd7a8f5b2313311 by Dino Viehland in branch 'master':
bpo-38116: Convert select module to PEP-384 (#15971)
https://github.com/python/cpython/commit/f919054e539a5c1afde1b31c9fd7a8f5b2313311

PR 15971 is merged, what else is needed @dino.viehland?

> PR 15971 is merged, what else is needed @dino.viehland?

Nothing, I close the issue.

I marked bpo-15703 as a duplicate of this issue.