Drastic Prelude changes imminent

[Herbert Valerio Riedel]

On 2015-01-28 at 18:35:01 +0100, Edward Kmett wrote:

[...]

> Adding to GHC the ability to complain if a given re-export is the only way
> a symbol finds its way into scope that you use, and apply those flags to
> Control.Monad.mapM and a bunch of combinators in Data.List.*.

...I think the 4-year-old #4879 GHC ticket covers that ability?

 [1]: https://ghc.haskell.org/trac/ghc/ticket/4879