Configuring hashable-1.2.4.0... Building hashable-1.2.4.0... Preprocessing library hashable-1.2.4.0... [1 of 3] Compiling Data.Hashable.Class ( Data/Hashable/Class.hs, .stack-work/dist/x86_64-linux/Cabal-1.22.5.0/build/Data/Hashable/Class.o ) Data/Hashable/Class.hs:460:28: Warning: In the use of ‘B.inlinePerformIO’ (imported from Data.ByteString.Internal): Deprecated: "If you think you know what you are doing, use 'unsafePerformIO'. If you are sure you know what you are doing, use 'unsafeDupablePerformIO'. If you enjoy sharing an address space with a malevolent agent of chaos, try 'accursedUnutterablePerformIO'." [2 of 3] Compiling Data.Hashable.Generic ( Data/Hashable/Generic.hs, .stack-work/dist/x86_64-linux/Cabal-1.22.5.0/build/Data/Hashable/Generic.o ) [3 of 3] Compiling Data.Hashable ( Data/Hashable.hs, .stack-work/dist/x86_64-linux/Cabal-1.22.5.0/build/Data/Hashable.o ) In-place registering hashable-1.2.4.0... Installing library in /home/joey/.stack/snapshots/x86_64-linux/lts-5.5/7.10.3/lib/x86_64-linux-ghc-7.10.3/hashable-1.2.4.0-8GjadD03dR57AKCJdr90LD Registering hashable-1.2.4.0...