I don’t think it’s all that complicated or fragile.
To resolve the constraint (C T1 T2), use the appropriate instance declaration
to express it in terms of (hopefully simpler) constraints. Keep doing that.
If you terminate, GHC should.
Example: to resolve Eq [Int], use the instance declaratio
On Sun, Dec 6, 2009 at 7:36 AM, Luke Palmer wrote:
> On Sat, Dec 5, 2009 at 10:04 PM, Michael Snoyman
> wrote:
> > I know this is basically a rewording of a previous e-mail, but I realized
> > this is the question I *really* wanted to ask.
> >
> > We have this language extension UndecidableInsta
On Sat, Dec 5, 2009 at 10:04 PM, Michael Snoyman wrote:
> I know this is basically a rewording of a previous e-mail, but I realized
> this is the question I *really* wanted to ask.
>
> We have this language extension UndecidableInstances (not to mention
> OverlappingInstances), which seem to divid
