The huffman library (http://hackage.haskell.org/package/huffman) is very useful, but unfortunately hasn't been maintained in several years and does not compile with new versions of the containers library. We are incorporating huffman encoding as part of the American Museum of Natural History's PCG project (https://github.com/amnh/pcg). We have a locally "repaired" version of the huffman library that we have used in a prototype and would like to share the updates with the Haskell community. Nine months ago I contacted Maxime Henrion, the listed maintainer of the huffman library, about a pull request to incorporate the changes or taking up maintainership responsibility, whatever they would prefer to update the library and share the huffman encoding library updates with the rest of the community. Unfortunately I didn't receive any response from them. Per the listed protocol for requesting maintainership of a hackage package if the current maintainer cannot be reached ( https://wiki.haskell.org/Taking_over_a_package#If_you_cannot_contact_the_aut...), I'm letting the Haskell community know that I am quite interested in taking over maintainership of the huffman library. I intend to update the library to compile with new versions of GHC and updated versions of the containers package. ~Alex Washburn, (recursion-ninja)