[Haskell-cafe] ANNOUNCE: new bridge! (prelude-prime)

[Roman Cheplyaka]

* Manuel Gómez <targen at gmail.com> [2013-05-23 08:33:15-0430]
> On Thu, May 23, 2013 at 3:07 AM, Roman Cheplyaka <roma at ro-che.info> wrote:
> > Pull requests are welcome, but let's stick to widely agreed changes
> > (like the Foldable/Traversable one). I think one of the reasons why
> > other Preludes haven't been adopted is because they were too radical.
> >
> > * Andreas Abel <andreas.abel at ifi.lmu.de> [2013-05-20 13:26:05+0200]
> >> Maybe instead of fiddling with the current Prelude (which might break
> >> backwards compatibility), we should design a new prelude which is not
> >> automatically loaded but contains roughly the current prelude (with
> >> the list functions generalized to collections) plus the "modern" type
> >> class stack: Functor, Applicative, Monad, Foldable, Traversable,
> >> Monoid etc.
> 
> Is this strategy adequate for attacking the issue of the type class
> stack, though?  Defining, say, a new Monad class with the desired
> Functor constraint wouldn’t be of much use, as everything else on
> Hackage (and on the GHC libraries!) would still use the “real” Monad.

No, it definitely isn't.

Roman