Re: [Haskell-cafe] The Typeable class is changing

On Tue, Jul 12, 2011 at 5:30 AM, Jon Fairbairn wrote:

...

So, this change will hit me for two different reasons, and sadly involve using CPP to control how things are compiled.

so that shouldn’t be necessary.

CPP will be necessary, since we want to support older versions of the base library as well (which obviously don't have myTycon3). -- Felipe.