[Twisted-Python] pypy support

[Hynek Schlawack]

On 7 Jun 2015, at 7:25, Glyph wrote:

> Many Twisted core developers (myself included) like to suggest that we 
> run PyPy.  We ourselves run PyPy in production.  It kinda works.
>
> And yet, our test suite is still failing on PyPy after many years.
>
> I'd like to suggest that if you have some time to write some code for 
> Twisted this month, you fix a test failure or two on 
> <https://buildbot.twistedmatrix.com/builders/debian7-pypy2.5/builds/44/steps/trial/logs/problems 
> <https://buildbot.twistedmatrix.com/builders/debian7-pypy2.5/builds/44/steps/trial/logs/problems>>. 
>  Some of these are subtle and weird, but there really aren't that many 
> of them (14 failures, 16 errors in all).

Many of them appear to be just the fact that PyPy dicts retain order and 
seem like a great way to get started with contributing to Twisted.