úÎíû     None is not a real instance of  ,  or T. It pretends being them to enable do notation. Its result type is purely phantom.Extract the underlying . Create a  holding a single item.Convert from a list.Convert to a list.%Monadic operations are not supported.)Applicative operations are not supported.%Functor operations are not supported.       $do-list-0.8.1-8IROKOfB0GkI0q6k7wv4bV Data.DoListDoListunDoListitemfromListtoList $fMonadDoList$fApplicativeDoList$fFunctorDoList $fEqDoList $fOrdDoList $fReadDoList $fShowDoListbaseGHC.BaseMonad ApplicativeFunctor$dlist-0.8.0.2-GWAMmbX9rLg3tqrbOizHGv Data.DListDList notSupported