see @lsmith's comments at sensiolabs/SensioFrameworkExtraBundle#57 (comment)
be careful. It has been merged only for Symfony 2.3 (yeah, SensioFrameworkExtraBundle maintains 3 separate branches with a compatible code base in all of them, except the composer constraints)
@stof: how come the composer constraint isn't updated to 2.3-dev ? Pardon my ignorance and assumptions on that one.
the branch wasnt around when i last updated the composer.json. this is quite a messy situation. i hope we will not need a branch just to deal with this.
ok, sry for my useless comment, but what can i do to around this error ?
maybe the best solution is to just duplicate the code and get rid of the sensio dependency entirely.
btw .. i havent analyzed the issue at all yet and since i dont really use the view response listener the motivation to invest the time is a bit low given the OSS things i can work on.
tthe branch was merged, so 2.2.* deps on sensio/frameworkextrabundle should work again. I'll see about updating the listener code in the next day or so.
thanks .. then we can also enable 2.3-dev aka master testing again.