On Mon, Feb 22, 2021 at 5:30 AM Richard van der Hoff <richard@matrix.org> wrote:

As it happens, it also fails (for an import of typing.Deque) on Python 3.5.3, as used by Debian oldstable.

Craig, what is your intention here? I think it's ok to drop support for these ancient versions of Python 3.5, but please could you make sure that python_requires gets set to 3.5.10 if that's what's been tested against?

Sigh. I can confirm that typing.Deque does not import on Python 3.5.2.

I took an inventory of our CI, and realized that the minimum version we are testing is 3.5.4 on Azure.

Can you review this which bumps the minimum version to Python 3.5.4:
https://github.com/twisted/twisted/pull/1525

Once I get that in, I will cherry pick it to the release branch and push out the 21.2.0 release.

Craig