[rmonad] (r)monad transformers

pepe mnislaih at gmail.com
Tue Mar 17 19:40:09 EDT 2009


I requested support for monad transformers in the rmonad package.

Currently my code depends on the mtl, that might change if the  
package becomes included in the Haskell Platform, but nonetheless my  
code does not use
any of the RMonadTrans instances made available by the rmonad package,
only the SetT monad. Therefore I am not really bothered by this.

Moreover, in the past I have easily stacked some mtl transformers on top
of the Set monad by means of the AsMonad wrapper, which can be done
independently of the RMonadTrans class.

I am eager to see an update of rmonad in Hackage with the SetT code,
so rest assured I am fine with either choice.


On 17/03/2009, at 22:39, Ganesh Sittampalam wrote:

> Hi,
> I've started pushing some patches to the darcs repo
> (http://code.haskell.org/rmonad) to handle monad transformers. I use  
> the
> same transformer types as already exist, and add a SetT of my own.
> If anyone has any opinions on whether this should depend on the mtl
> package or the newer transformers package, please let me know. For  
> now I'm
> depending on transformers but I'm trying to find out what the Haskell
> Platform will be doing (I think the current plan is mtl) and will  
> probably
> follow that.
> Cheers,
> Ganesh
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