On Thu, Mar 25, 2010 at 08:13:37AM +1100, Erik de Castro Lopo wrote:
Ross Paterson wrote:
I propose to rename some of the modules in the transformers package so that it no longer conflicts with the mtl package:
I thought the plan was to replace mtl with transformers.
If that was the plan wouldn't it be better to actually kill off mtl so it doesn't hang around for years to come?
The aim is still to split the concrete monad transformers from the multi-parameter classes with functional dependencies. Last year we proposed replacing mtl with two packages representing the split (transformers and monads-fd) in a big bang, but there was concern about the degree of change. This proposal allows transformers to co-exist with mtl, but also makes monads-fd (depending on transformers) closer to being a plugin replacement for mtl (but still not completely one). I hope to propose such a replacement in the future.