[Twisted-Python] Regression in Gtk2 support testing

Itamar Turner-Trauring itamar at itamarst.org
Sat Feb 18 15:19:56 EST 2012

I'll see what I can do Monday, starting with reenabling gtk2.

> Hello all,
> Since #4558 was merged, introducing "gi reactor" based on the new Python
> bindings for gobject, all testing of the Gtk2 reactor has been disabled,
> on all platforms.
> This is a two-part problem.
> The first part is the more damaging part, but fortunately also the more
> easily fixed part.  #4558 made it impossible to import
> `twisted.internet.gtk2reactor` if `sys.modules` contains a "gi" key.
> This seems to overlook the fact that even a *failed* import of the `gi`
> module adds such a key to that dictionary.  Since the test suite tries
> to test `gireactor`, there will always be such a key, so `gtk2reactor`
> can never be imported by the test suite.
> The result is that gtk2reactor is no longer tested by buildbot on any
> platform.
> The second part will show up once the first problem is fixed.  Once the
> check correctly ignores `sys.modules["gi"] == None`, it will still be
> impossible to test both gireactor and gtk2reactor in our current
> buildbot configuration.  One or the other will win, and the loser will
> be quietly skipped (apparently too quietly for most people to notice).
> Some new strategy is required so that we can test both of these reactors
> on all our supported platforms.
> I hope someone will resolve the first issue quickly, perhaps this
> weekend, so that we don't drift too far away from a working gtk2reactor.
> If it isn't fixed soon, I suggest reverting the merge until the problem
> can be fixed in the #4558 branch.
> Jean-Paul
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