Thanks for bringing this up again. This was started in my data-proxy branch of base,
but never really finished. We definitely want to have this in 7.8, and I think there's
only some minor finishing work to do (check if we have all the instances we want,
document, etc.). Perhaps you can look through what's there already, and what you
think is missing? I'm more than happy to accept contributing patches too :-)


Thanks,
Pedro

On Sun, Jul 21, 2013 at 3:09 AM, Shachaf Ben-Kiki <shachaf@gmail.com> wrote:
On Mon, Mar 4, 2013 at 11:12 AM, José Pedro Magalhães <jpm@cs.uu.nl> wrote:
> Hi,
>
> On Mon, Mar 4, 2013 at 4:51 PM, Richard Eisenberg <eir@cis.upenn.edu> wrote:
>>
>> Unless I'm missing something, this all looks very straightforward. The
>> implementation is there, already, in the guise of (gcast Refl). We would
>> just shuffle the definitions around a bit. Am I indeed missing something?
>
>
> I think that is the case indeed. Though I agree that it would be a nice
> addition to Data.Typeable.
>
>

This thread is a few months old now, but it looks like people were
generally in favor of adding (gcast Refl) to Data.Typeable. I've used
it in real code in at least one place since then (where I just defined
it locally). It doesn't look like it's actually been added, though --
is it planned to go into HEAD eventually?

    Shachaf