[Haskell-cafe] Why is it so different between 6.12.1 and 6.10.4_1 ?

Ivan Lazar Miljenovic ivan.miljenovic at gmail.com
Fri Mar 26 21:13:38 EDT 2010

David Menendez <dave at zednenem.com> writes:
> On Fri, Mar 26, 2010 at 8:59 PM, Ivan Lazar Miljenovic <ivan.miljenovic at gmail.com> wrote:
>> Some definitions and exports got changed, so in 6.12 the (-> a) Monad
>> instance is exported whereas in 6.10 it isn't.
> What? From where?
> I thought the whole reason the Monad ((->) a) instance was in
> Control.Monad.Instances (instead of Prelude) was to retain
> compatibility with the library report.

I forget the specifics, but we had a discussion on this in #haskell a
month or so ago: IIRC either the instance definition's location was
changed or else it was re-exported by Control.Monad now or something.

Ivan Lazar Miljenovic
Ivan.Miljenovic at gmail.com

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