Please feel free to propose your project here!
Cabal is a system for building and packaging Haskell libraries and programs. It defines a common interface for package authors and distributors to easily build their applications in a portable way.
Johan Tibell (via IRC)
Bug-closing fixit, where people try to reproduce bugs on the GitHub issue tracker and report those that cannot be reproduced as such. This would be very useful as the number of open issues has gotten a bit out-of-control, making the issue tracker less useful.
This is a good opportunity for the less experienced Haskell folks to get acquainted with the Haskell infrastructure and possibly even dig into the Cabal internals.