Re: RFC: Singleton equality witnesses

On Wed, Feb 6, 2013 at 7:17 PM, Gabor Greif wrote:

On 2/6/13, Richard Eisenberg wrote:

...

The only thing that stops me from saying "push" is that I think there is a better organization for all of this. The ideas we're discussing here (things like the Void type) don't seem to belong in TypeLits -- it has nothing to do with literals. Time for a GHC.TypeReasoning module? Does someone have a better name?

Sounds okay. We can wiggle around on the new branch 'till we feel comfortable, but I'd like to land this on master before the v7.8 train leaves the station (i.e. the release branch is created).

Can you perhaps summarise exactly what needs to be added to GHC for this to work? It's not immediately clear to me why this is not just a library issue. Thanks, Pedro