Hi, I recently read (again) the wiki page on a web application interface[1] for Haskell. It seems like this basically works out to Hack[2], but using an enumerator instead of lazy bytestring in the response type. Is anyone working on implementing this? If not, I would like to create the package, though I wouldn't mind some community input on some design decisions: * Hack has been fairly well-tested in the past year and I think it provides the features that people want. Therefore, I would want to model the Environment variable for WAI from Hack. I *could* just import Hack in WAI and use the exact same Environment data type. Thoughts? * If using a different data type for Environment, should I replace the String parts with ByteStrings? On the one hand, ByteStrings are the "correct" data type since the HTTP protocol does not specify a character encoding; on the other hand, Strings are easier to deal with. * It's simple to write a function to convert between a lazy bytestring and an enumerator, meaning it would be very easy to write conversion functions between Hack and WAI applications. This would make it simpler for people to use either backend. If someone else is already working on WAI, please let me know, I don't want to have duplicate implementations. The idea here is to consolidate, not split the community. I have a few Hack handlers (simpleserver, cgi, fastcgi) that I would happily convert to WAI handlers as well. Michael [1] http://www.haskell.org/haskellwiki/WebApplicationInterface [2] http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hack