Missing instance declarations in base

[Henning Thielemann]

On Mon, 29 Jun 2015, Edward Kmett wrote:

> Also, I wonder if () could be Storable:
> 
> instance Storable () where
>   sizeOf _ = 0
>   alignment _ = 1
>   peek _ = return ()
>   poke _ _ = return ()
> 
> 
> No objection from me to any of them; a very strong +1.

Btw. what about Storable (a,b) and Storable (a,b,c)?