vector and GeneralizedNewtypeDeriving

[John Lato]

Hi Richard,

Following your comment, I created a new ticket,
https://ghc.haskell.org/trac/ghc/ticket/9112, for this issue.

I'm not entirely sure I follow all the subtleties of your analysis, but I
think it's correct.


On Wed, May 14, 2014 at 9:10 PM, Bryan O'Sullivan <bos at serpentine.com>wrote:

>
> On Wed, May 14, 2014 at 7:02 PM, John Lato <jwlato at gmail.com> wrote:
>
>> I would have expected this would have affected a lot users, but as I
>> haven't heard many complaints (and nobody else said anything here!) maybe
>> the impact is smaller than I thought.
>>
>
> I think people just haven't migrated much to 7.8 yet. This is definitely a
> substantial problem.
>
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