Configuring MonadRandom-0.4.2.3... Building MonadRandom-0.4.2.3... Preprocessing library MonadRandom-0.4.2.3... [1 of 2] Compiling Control.Monad.Random.Class ( Control/Monad/Random/Class.hs, .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Control/Monad/Random/Class.o ) [2 of 2] Compiling Control.Monad.Random ( Control/Monad/Random.hs, .stack-work/dist/x86_64-osx/Cabal-1.22.5.0/build/Control/Monad/Random.o ) Control/Monad/Random.hs:54:1: Warning: Module ‘Control.Monad.Error’ is deprecated: Use Control.Monad.Except instead Control/Monad/Random.hs:70:1: Warning: The import of ‘Data.Monoid’ is redundant except perhaps to import instances from ‘Data.Monoid’ To import instances alone, use: import Data.Monoid() Control/Monad/Random.hs:206:11: Warning: In the use of type constructor or class ‘Error’ (imported from Control.Monad.Error, but defined in Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" Control/Monad/Random.hs:206:51: Warning: In the use of type constructor or class ‘ErrorT’ (imported from Control.Monad.Error, but defined in Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" Control/Monad/Random.hs:251:11: Warning: In the use of type constructor or class ‘Error’ (imported from Control.Monad.Error, but defined in Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" Control/Monad/Random.hs:251:53: Warning: In the use of type constructor or class ‘ErrorT’ (imported from Control.Monad.Error, but defined in Control.Monad.Trans.Error): Deprecated: "Use Control.Monad.Trans.Except instead" In-place registering MonadRandom-0.4.2.3... Installing library in /Users/mahdi/.stack/snapshots/x86_64-osx/lts-6.7/7.10.3/lib/x86_64-osx-ghc-7.10.3/MonadRandom-0.4.2.3-4XRZwPV1MjC69wlAshwzrw Registering MonadRandom-0.4.2.3...