Resolving dependencies...
Downloading ixmonad-0.56...
Configuring ixmonad-0.56...
Building ixmonad-0.56...
Preprocessing library ixmonad-0.56...

src/Control/Effect.hs:7:8:
    Could not find module `Data.Proxy'
    Perhaps you meant
      Data.Array (needs flag -package haskell2010-1.1.1.0)
      Data.Array (needs flag -package array-0.4.0.1)
    Use -v to see a list of the files searched for.
Failed to install ixmonad-0.56
cabal: Error: some packages failed to install:
ixmonad-0.56 failed during the building phase. The exception was:
ExitFailure 1