Re: [Twisted-Python] Could Service.startService return a Deferred?

This is kind of an ongoing bugaboo for me, too. Buildbot uses services *heavily*, and at runtime (to support reconfigs, etc.). We've had to work around issues like stop being called before asynchronous starts complete using DeferredLocks and other such fun. I filed a bug with some of my issues - https://twistedmatrix.com/trac/ticket/6813 It'd be great to fix some of this in the existing implementation, but #4366 seems to demonstrate that this is impossible without breaking compatibility. So, maybe we need to introduce a new service hierarchy -- perhaps with some ability to use the existing Service classes as child services. I'd be interested to hear thoughts on the matter. Dustin