Resolving dependencies...
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Installed mtl-2.2.1
Configuring ImperativeHaskell-1.0.0.1...
Building ImperativeHaskell-1.0.0.1...
Failed to install ImperativeHaskell-1.0.0.1
Build log ( /home/builder/.cabal/logs/ImperativeHaskell-1.0.0.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-11253/ImperativeHaskell-1.0.0.1'
Configuring ImperativeHaskell-1.0.0.1...
Building ImperativeHaskell-1.0.0.1...
Preprocessing library ImperativeHaskell-1.0.0.1...
[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: error:
    • 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))
cabal: Leaving directory '/tmp/cabal-tmp-11253/ImperativeHaskell-1.0.0.1'
cabal: Error: some packages failed to install:
ImperativeHaskell-1.0.0.1 failed during the building phase. The exception was:
ExitFailure 1