foldable flexible bridges (putting foldable+traversable in prelude) Re: Burning bridges#

[Ian Lynagh]

On Fri, May 24, 2013 at 08:55:55AM +0800, Conrad Parker wrote:
> 
> I'd much prefer to have all these little things (type hierarchy
> cleanup, prelude generalisation) lumped together:
>   * available in a ghc release but off-by-default; that way library
> authors and commercial users can test the changes without hacking ghc
>   * default in the following ghc release, but disableable by a flag

To do either of these you'd need a completely different set of libraries
for the old vs the new. It would be simpler just to install 2 different
GHCs, one with the old and one with the new.


Thanks
Ian
-- 
Ian Lynagh, Haskell Consultant
Well-Typed LLP, http://www.well-typed.com/