3 / /_\// /_/ / / | | GHC Interactive, version 5.03, for Haskell 98.
4 / /_\\/ __ / /___| | http://www.haskell.org/ghc/
5 \____/\/ /_/\____/|_| Type :? for help.
7 Loading package std ... linking ... done.
8 Prelude> -- !!! check we can detect deadlock
9 Prelude> :set -package concurrent
10 Loading package lang ... linking ... done.
11 Loading package concurrent ... linking ... done.
12 Prelude> Concurrent.newEmptyMVar >>= Concurrent.takeMVar
14 Prelude> Leaving GHCi.