Proof of Concept solution to the internal.takeThroughDrain issues
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As I said in (this PR)[https://github.com/Spinoco/pull/33] the problem you had could have been related to the tests.
Today I played some more with the example and noticed that
fs2.concurrent.Queue.synchronous[F, A]can only contain one element at a time (which means that using this data structure for the implementation couldn't make it work).Using an
unboundedQueue in the implementation ofinternal.takeThroughDrainsolves the issue. I don't know if this changes the intended semantic of the author in some way but we could propose something based on this changes and finally update fs2-mail to fs2 2.0.1!P.S. I bumped the scala and sbt version only to make metals work. Probably the first two commits in this PR can be dropped.