On 2014-10-08 at 14:00:05 +0200, Alan & Kim Zimmerman wrote:
[...]
> Should this go into Trac?
Fwiw, there is a version "7.9" you can select when writing a Trac ticket
for the very purpose to file bugs against GHC HEAD.
[...]
> The file being compiled is
>
> --------------------------------------------
> {-# LANGUAGE DeriveTraversable #-}
>
> module T9069 where
>
> import Data.Foldable
> import Data.Traversable
>
> data Trivial a = Trivial a
> deriving (Functor,Foldable,Traversable)
> ---------------------------------------------
There's two simple ways to workaround this;
either
a) add a 'import Prelude' after the two imports
or
b) remove the two imports
The a) option has the benefit that it will still work with GHC 7.8.3
_______________________________________________
ghc-devs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/ghc-devs
