+++ /dev/null
- ___ ___ _
- / _ \ /\ /\/ __(_)
- / /_\// /_/ / / | | GHC Interactive, version 5.03, for Haskell 98.
-/ /_\\/ __ / /___| | http://www.haskell.org/ghc/
-\____/\/ /_/\____/|_| Type :? for help.
-
-Loading package std ... linking ... done.
-Prelude> -- !!! check we can detect deadlock
-Prelude> :set -package concurrent
-Loading package lang ... linking ... done.
-Loading package concurrent ... linking ... done.
-Prelude> Concurrent.newEmptyMVar >>= Concurrent.takeMVar
-Deadlocked.
-Prelude> Leaving GHCi.