Resolving dependencies...
Downloading GHood-0.0.5...
Configuring GHood-0.0.5...
Building GHood-0.0.5...
Preprocessing library GHood-0.0.5...
[1 of 2] Compiling Paths_GHood      ( dist/build/autogen/Paths_GHood.hs, dist/build/Paths_GHood.o )
[2 of 2] Compiling Debug.Observe    ( src/Debug/Observe.hs, dist/build/Debug/Observe.o )

src/Debug/Observe.hs:288:10:
    Not in scope: type constructor or class ‘Applicative’
Failed to install GHood-0.0.5
cabal: Error: some packages failed to install:
GHood-0.0.5 failed during the building phase. The exception was:
ExitFailure 1