Proposal: remove datatype contexts from base

[Johan Tibell]

On Tue, May 24, 2011 at 4:08 PM, Ross Paterson <ross at soi.city.ac.uk> wrote:
> The Haskell' committee decided to remove datatype contexts from the language:
>
> http://www.haskell.org/pipermail/haskell-prime/2011-January/003335.html
>
> (though this doesn't seem to be in the Report yet.)
>
> In the base package there are 4 of these:
>
>  Data/Complex.hs:data (RealFloat a) => Complex a
>  GHC/Arr.lhs:data Ix i => Array i e
>  GHC/Real.lhs:data  (Integral a)      => Ratio a = !a :% !a  deriving (Eq)
>  Control/Arrow.hs:newtype ArrowApply a => ArrowMonad a b = ArrowMonad (a () b)
>
> As far as I know, removing them won't break any code that compiles now,
> so let's do it.

+1