export QueueLike

[srijs]

QueueLike is currently not exported. That means that it doesn't show up in the documentation, and it is not possible to actually read from the event queue.

[adinapoli]

Hey @srijs , thanks, good catch!

It's not exactly right to say that it's not possibly to read from the event stream; in fact it will work if you know a priori the inner implementation and use the concrete typeclass implementation. This in an except of code I have in production which indeed compiles:

--------------------------------------------------------------------------------
logSupervisionEvents :: Config -> TQueue SupervisionEvent -> IO ()
logSupervisionEvents cfg q = do
  evt <- atomically $ readTQueue q
  case evt of
      [...] -- redacted

And this also explains why I didn't realise sooner of the problem; I introduced the QueueLike abstraction in 1.0.4.0 and my production code didn't break during the version bump from 1.0.3.0. An eventful coincidence!

I will let Travis finish the build and then merge. Thanks!

[srijs]

Thanks for merging so quickly! Yes, you're right, I can use it if I know what QueueLike can be (i.e. read the source) and monomorphize it, but for me it partly defeats the purpose of having it be polymorphic in the first place ;)

Can I expect a patch version on Hackage soon?

[adinapoli]

@srijs I will do my best to upload this on Hackage later today or tomorrow!

I will expand the changelog with your fix and release 1.0.4.1 😉