[Haskell-cafe] "Rebox Package" or "To Hackage or not to Hackage"

Hi List, I've recently had a situation where I used the same pattern quite a bit while reducing and evaluating an AST. I quickly wrapped the operation in a package and stuck it on github. http://github.com/sw17ch/rebox/blob/master/src/Data/Rebox.hs I'm wondering two things: 1) Does any one recognize the pattern I'm using here as something with a different name? 2) Is this worth sticking on Hackage? It's trivial, but we have plenty of trivial concepts on Hackage (and it's not a bad thing). Any feedback would be great. /jve