Syb Renovations? Issues with Data.Generics

Ian Lynagh igloo at
Tue Jul 29 15:59:44 EDT 2008

On Tue, Jul 29, 2008 at 08:27:00PM +0100, Claus Reinke wrote:
> >>   My suggestion is to split this module into two, and stop the implicit
> >>   import/export of the incomplete instances from Data.Generics.
> >I don't think that this is a good idea.
> Could you please elaborate on your reasons?

That's what the rest of that e-mail was supposed to be.

> True. But the current situation is even worse: we either get all
> instances (good and bad) or none

I think you should always get all:

> >I believe instances really do have to be global.

By the way, is there something somewhere describing the alternate
instance that you want to define?


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