Documentation for base does not include special items
The documentation for base does not include tuples, lists or arrow. I realise these are special in Haskell, but it seems a shame they aren't documented.
For tuples, the documentation for base doesn't include them in either Prelude or Data.Tuple, but the documentation for ghc-prim includes them in GHC.Unit and GHC.Tuple. I think the lack of documentation for tuple types is a bug, since it would be relatively easy for them to be documented, and does make the documentation more complete.
For lists (, (:)), there is no documentation in either base or ghc-prim. It would be nice if they were documented in Prelude and Data.List, but not if it was too much effort (I can imagine that Haddock can't accept list definitions).
For the arrow type ->, it's unclear if it can reasonably be documented, so it might be worth thinking about but probably not bothering to document.
The reason I'm interested in ensuring complete documentation is that Hoogle currently doesn't know about tuple constructors in the base library, but it does know about them in ghc-prim, which seems wrong.