Add Applicative instance for STM

[Ian Lynagh]

On Sun, May 16, 2010 at 06:36:56PM +0200, Bas van Dijk wrote:
> On Sun, May 16, 2010 at 4:19 PM, Ross Paterson <ross at soi.city.ac.uk> wrote:
> > It might be simpler to have Control/Applicative.hs import GHC.Conc and
> > define the instance.
> 
> The {-# SOURCE #-} import of Control.Applicative and the accompanying
> boot file are indeed unfortunate. However, I like having the Functor,
> Applicative and Monad instances in one place. But I can easily be
> convinced if more people like it your way.

I would prefer to avoid the import loop.


Thanks
Ian