[Twisted-Python] Does anyone know why trunk is failing CI on PyPy 7.3.4?

[Wim Lewis]

On Saturday, May 1, 2021 1:58:45 AM PDT, Adi Roiban wrote:

> We now have a fix for Twisted, but I think that this is a bug in PYPY 7.3.4
>
> FYI I have reported this bug upstream.
>
> https://foss.heptapod.net/pypy/pypy/-/issues/3451

Looks like we weren't the only project to run into this problem!

(I think what happens is that, although the right-hand-side is always 
evaluated before the list assignment starts, it's undefined whether the 
generator returned by the RHS is completely consumed before the list begins 
to be altered — so, even though pypy7.3.5 will be reverting to the old 
behavior, it's good that twisted no longer depends on it.)


Thanks for all your work keeping CI happy, Adi!