Benjamin Franksen wrote:
[snip] Thus, GHC does nothing wrong, according to the addendum. That doesn't mean allowing IO-equivalent newtypes wouldn't be a good idea. It is just not written in the addendum.
Apologies for not reading the addendum properly and slighting the good character of GHC... :-) I've submitted a feature request that explains in more detail why I think it would be a good idea which can be read at http://hackage.haskell.org/trac/ghc/ticket/736
Regards, Brian.
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