We need to add role annotations for 7.8

[Brandon Allbery]

On Fri, Mar 14, 2014 at 5:36 AM, Johan Tibell <johan.tibell at gmail.com>wrote:

> I'm quite worried about this change though. I thought the default role for
> data type was nominal, as that's the safe default. If the default is
> representational, every package author will need to be aware of this
> feature and update their packages. That's quite a high cost.
>

Nominal default breaks everything that uses newtype deriving and doesn't
have role annotations, doesn't it? Representational default means things
behave in 7.8 as they did in earlier GHCs.

-- 
brandon s allbery kf8nh                               sine nomine associates
allbery.b at gmail.com                                  ballbery at sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net
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