On May 31, 2018, at 10:22 AM, Nick Coghlan <ncoghlan@gmail.com> wrote:

On 31 May 2018 at 19:34, Nathaniel Smith <njs@pobox.com> wrote:
On Wed, May 30, 2018, 14:21 Victor Stinner <vstinner@redhat.com> wrote:
MemoryBIO was the key feature which allowed to implement TLS for the
ProactorEventLoop (IOCP) of asyncio.

MemoryBIO is definitely super useful for async libraries – trio uses it, asyncio uses it, twisted uses it (via pyopenssl). But I don't know of anyone who currently needs it but hasn't already found a way to get it.

I think one of the other key things that changed is pip gaining its own native support for using the SecureTransport API on Mac OS X.

So yeah, unless someone from PyCA chimes in to say that the PEP still offers benefits that we can't get another way, withdrawing PEP 546 as "Overtaken by events" probably makes sense.



I think it still provides benefits FWIW, pip’s SecureTransport shim is a slow as hell ctypes hack that is slow enough we *only* use it when the ``ssl`` library wouldn’t be able to connect anyways and that doesn’t help Windows. OTOH I don’t think it’s super useful without PEP 543 also.