Thanks David.  Glad to know.  I'll kludge around the missing feature for now.  I've added myself to the CC list for the ticket.  Regards,   - Conal

On Fri, Sep 10, 2010 at 10:47 AM, David Waern <david.waern@gmail.com> wrote:
2010/9/10 Conal Elliott <conal@conal.net>:
> I'm updating a library (TV) and getting haddock parse errors for the doc
> strings attached to GADT constructors.  Is there a way to haddock-document
> GADT constructors?  I've tried both "-- | ..." before and "-- ^ ... "
> after.  Both give parse errors.  Thanks,  - Conal

Nope. It's not yet supported. We should really get this one done.

http://trac.haskell.org/haddock/ticket/43

David