darcs patch: Remove unsafeCoerce-importing kludgery in favor of Uns...

[Donald Bruce Stewart]

simonmarhaskell:
> Ashley Yakeley wrote:
> >Donald Bruce Stewart wrote:
> >>ashley:
> >>>Data.Array.Base isn't exposed, is it?
> >>
> >>Sure is -- it's where we get unchecked array reads and write from.
> >
> >I'm not seeing it here:
> ><http://haskell.org/ghc/docs/latest/html/libraries/>
> ><http://haskell.org/ghc/dist/current/docs/libraries/>
> 
> It's exposed but not documented.  When we wrote it, the .Base module was a 
> convenient way to structure the implementation, we didn't intend it to be 
> imported outside of the base package.  By the time we started using Cabal 
> and had the choice whether to expose modules or not, code was already using 
> Data.Array.Base (possibly my own code, I don't remember :-), so we left it 
> exposed.
> 
> We should really hide Data.Array.Base, and move out of it the things that 
> we really want to expose.  Perhaps Data.Array.Unsafe?

Duncan's looking to do a similar thing with Data.ByteString, as we
prepare for the 1.0 release. Roughly,

    internal stuff, Data.ByteString.Internal
    unsafe stuff,   Data.ByteString.Unsafe

-- Don