Haskell Platform Proposal: add transformers and revise the mtl package to depend on it

Ross Paterson ross at soi.city.ac.uk
Fri Sep 17 02:35:05 EDT 2010

On Fri, Sep 17, 2010 at 12:29:46AM -0400, Brandon S Allbery KF8NH wrote:
> On 9/16/10 10:21 , Duncan Coutts wrote:
> > does not know what to do. It's much more work for them to discover
> > that this new package monads-fd was just added to the platform and it
> > seems to provide the same modules.
> Wasn't the original notion to leave monads-fd as is and have mtl-2 re-export
> monads-fd?

It was, but installing two packages providing modules with the same name
makes problems for people using ghci or ghc --make, and the suggestion
of hiding mtl was criticized as too disruptive.  Hence the revised plan.

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