Resolving dependencies... Configuring TypeCompose-0.9.5... Building TypeCompose-0.9.5... Preprocessing library TypeCompose-0.9.5... src/Data/Title.hs:1:33: Warning: -XOverlappingInstances is deprecated: instead use per-instance pragmas OVERLAPPING/OVERLAPPABLE/OVERLAPS [ 1 of 10] Compiling Control.Instances ( src/Control/Instances.hs, dist/build/Control/Instances.o ) src/Control/Instances.hs:21:1: Warning: The import of ‘Data.Monoid’ is redundant except perhaps to import instances from ‘Data.Monoid’ To import instances alone, use: import Data.Monoid() [ 2 of 10] Compiling Data.RefMonad ( src/Data/RefMonad.hs, dist/build/Data/RefMonad.o ) [ 3 of 10] Compiling Data.Bijection ( src/Data/Bijection.hs, dist/build/Data/Bijection.o ) src/Data/Bijection.hs:36:16: Unexpected type ‘(~>)’ In the data declaration for ‘Bijection’ A data declaration should have form data Bijection a b c = ... Failed to install TypeCompose-0.9.5 cabal: Error: some packages failed to install: TypeCompose-0.9.5 failed during the building phase. The exception was: ExitFailure 1