Ok, so stage2 is in fact behaving correctly, the stage1 code needs to have CPP directives around it.
In other words this is not actually a bug. Thanks Alan On Wed, Oct 8, 2014 at 2:05 PM, Nicolas Trangez <[email protected]> wrote: > On Wed, 2014-10-08 at 14:00 +0200, Alan & Kim Zimmerman wrote: > > The current HEAD gives a spurious unused declaration when deriving > > Typable/Traversable > > Why would this be spurious, given `Foldable` and `Traversable` are now > exported by `Prelude`, so those imports are in fact not necessary? > > Nicolas > >
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