Dear generics-subscribers, I announced our attempt to write a paper for the Haskell workshop on this list more than a month ago. I'm afraid we failed. Not because we have been lazy, but because it turned out to be more work to perform all the tests and evaluations. And while we were writing the paper a new library for generic programming appeared! On the other hand, we got quite far, and we have the feeling we can write quite a nice paper about the subject. To mention something recent: Patrik Jansson performed some time-measurements for the different libraries. The very limited tests (form which you cannot draw any conclusions without more evidence, I think) show that the fastest approach is around 8 times faster than the slowest approach! So we will try to keep up the momentum, and submit a paper to POPL. It has to take a bit broader perspective, but we think that that should be possible. If you're interested in participating let me know, then I can give you access to the paper repository. The test code can be obtained from the darcs repository. Al the best , Johan