Resolving dependencies...
Configuring compose-ltr-0.1.2...
Building compose-ltr-0.1.2...
Preprocessing library compose-ltr-0.1.2...
[1 of 2] Compiling Data.Function.Compose.LeftToRight ( src/Data/Function/Compose/LeftToRight.hs, dist/build/Data/Function/Compose/LeftToRight.o )

src/Data/Function/Compose/LeftToRight.hs:1:55:
    Ambiguous occurrence ‘<$’
    It could refer to either ‘Data.Function.Compose.LeftToRight.<$’,
                             defined at src/Data/Function/Compose/LeftToRight.hs:9:1
                          or ‘Prelude.<$’,
                             imported from ‘Prelude’ at src/Data/Function/Compose/LeftToRight.hs:1:8-40
                             (and originally defined in ‘GHC.Base’)
Failed to install compose-ltr-0.1.2
cabal: Error: some packages failed to install:
compose-ltr-0.1.2 failed during the building phase. The exception was:
ExitFailure 1