Delete the ever living shit out of Task

[tonymorris]

It's 2017. Task still exists.

[kevinmeredith]

Could you please explain the problem with Task?

Would something else replace it?

Thanks!

[jdegoes]

Task has numerous unsafe functions, tries to be an IO monad but without providing all the time-tested functionality of such a monad (which it then tries to provide in more ad hoc ways), uses exceptions to communicate internally, uses implicits as global effectful values, and so forth.

That said, Scalaz 7 IO does not (by itself) subsume the functionality of Task, so Task in 7 cannot easily be deleted without causing user's pain. Scalaz 8's IO, however, will be a much richer version of IO that supports asynchronous effects, without any of the drawbacks of Task.

[fommil]

This is hopefully coming in 7.3. I created a dupe at #1874 (that was for 8.0) somewhere. I don't have the energy to find it right now.

[ktonga]

@fommil I think you meant #1796

[tonymorris]

Fixed in #2037