With "retrospective type-class extension" in place whatever they look
like, wouldn't everyone would have to import the same retrospectively
extended instances ("orphan retrospective extensions" anyone?). Thus
there seems no benefit over recoding the hierarchy directly and
importing it, vis:> import NewHierachyPrelude Best wishes Stephen _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
