Resolving dependencies...
Configuring ImperativeHaskell-1.0.0.0...
Building ImperativeHaskell-1.0.0.0...
Preprocessing library ImperativeHaskell-1.0.0.0...
[1 of 4] Compiling Control.Monad.Imperative.Internals ( Control/Monad/Imperative/Internals.hs, dist/build/Control/Monad/Imperative/Internals.o )

Control/Monad/Imperative/Internals.hs:54:27:
    No instance for (Applicative (MIO r))
      arising from the 'deriving' clause of a data type declaration
    Possible fix:
      use a standalone 'deriving instance' declaration,
        so you can specify the instance context yourself
    When deriving the instance for (Monad (MIO r))

Control/Monad/Imperative/Internals.hs:54:34:
    No instance for (Applicative (MIO r))
      arising from the 'deriving' clause of a data type declaration
    Possible fix:
      use a standalone 'deriving instance' declaration,
        so you can specify the instance context yourself
    When deriving the instance for (MonadCont (MIO r))
Failed to install ImperativeHaskell-1.0.0.0
cabal: Error: some packages failed to install:
ImperativeHaskell-1.0.0.0 failed during the building phase. The exception was:
ExitFailure 1