[Hugs-users] Network.CGI missing in Hugs

[Ian Lynagh]

On Fri, Jan 05, 2007 at 06:14:31PM +0100, Bjorn Bringert wrote:
> On Jan 5, 2007, at 18:04 , Ross Paterson wrote:
> >
> >	instance (MonadTrans t, MonadCGI m, Monad (t m)) => MonadCGI (t m)
> 
> I added that instance reluctantly, but it is quite useful when you  
> write your own monad transformers and want to wrap CGIT. Removing it  
> would break some existing code (Hope is the only one I know of),

Some of my code needs it too (I think I might have requested it be added
in the first place?). I find it very useful to be able to write code in
the style shown in
http://www.haskell.org/pipermail/haskell-cafe/2007-January/021085.html

Hugs compatibility is also important, though, and undecidable instances
are marked "probably no" for Haskell'.

It feels like a bit of a sledgehammer, but maybe the instance should be
put in its own package cgi-undecidable or something?


Thanks
Ian