 
            
            
            
            
                28 Jan
                
                    2015
                
            
            
                28 Jan
                
                '15
                
            
            
            
        
    
                5:33 p.m.
            
        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