Adding a DSEL library to the hierarchy

[Johan Tibell]

> > It's what I do, too.  Frankly, I don't see any problem with this, and
> > if I had a penny for every time I had to type D a t a . B y t e S t r
> > i n g . L a z y . C h a r 8  or  T e x t . P a r s e r C o m b i n
> > a t o r s . P a r s e c  in ghci just to disambiguate some
> > operation...
> Does that mean I'm not the only one longing for
>
>  :m +Data.ByteString.Lazy.Char8 as B
>
> In that case I should probably submit a feature request for it.

+1

Importing modules in ghci is really annoying for several reasons:

- Above mentioned.
- Loose my imports on failed load (maybe we could keep the current
bindings, imports until the whole load is finished?)
- Super long prompt.

Cheers,

Johan