Re: [Haskell-cafe] Either instance of Monad?

On Wednesday 23 February 2011 14:14:46, Yves Parès wrote:

The latest, I think : GHC 7.0.1, mtl-2.0.1.0, base-4.3.0.0

Hmm, that's exactly what I have. Weirder and weirder. For the moment, I'm out of ideas.