On Wed, May 25, 2011 at 5:01 AM, Ivan Lazar Miljenovic <ivan.miljenovic@gmail.com> wrote:

With my wl-pprint-text package, Jason Dagit suggested to me on
#haskell that it would make sense to make such a pretty-printer be
class-based so that the same API could be used for String, ByteString,
Text, etc.

I don't think that's actually a good idea. The internals of your package will be a soggy mess, and the public APIs will be hard to follow. I'm also unclear on why you'd want to use something like wl-pprint for bytestrings at all.