Re: Proposal: Migrate Data.Functor.{Sum, Product, Compose} from transformers to base.

On 23/07/2015, Edward Kmett wrote:

So, as a concrete proposal I propose that we:

1.) Move Data.Functor.Sum, Data.Functor.Product, Data.Functor.Compose and Data.Functor.Classes into base.

2.) Move Control.Applicative's Const into Data.Functor.Const, but continue to re-export it from Control.Applicative.

3.) Add whatever missing, sensible, instances make sense after the transition that were ruled out by these modules' previous placement. *e.g.* Data, Generic, Generic1.

+1 all