[Haskell-cafe] upgrading mtl1 to mtl2

Sebastian Fischer fischer at nii.ac.jp
Thu Feb 17 08:28:59 CET 2011

On Thu, Feb 17, 2011 at 11:32 AM, Evan Laforge <qdunkan at gmail.com> wrote:

> Or will there just be massive signature rewriting in the wake of mtl2?

I must admit I still don't understand your exact problem. Could you help me
with an example where using mtl2 requires an additional (Functor m)
constraint that is not required when using mtl1?

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