On Tue, Jun 1, 2010 at 7:09 PM, Matthias Kilian wrote:

- "Liveness" of a library, that is: does it still get updates? Does it  build with recent versions of GHC?

Note that Hackage already shows the upload date and for which versions of GHC the package does and doesn't build.

- Reverse dependencies -- how many other libraries and/or programs are  using this library (Maybe something for Hackage-2.0)?

My brother Roel created a patch for this. See ticket #576: http://hackage.haskell.org/trac/hackage/ticket/576 Also see our mirror Hackage that implements that patch: http://bifunctor.homelinux.net/~roel/hackage/packages/hackage.html The server automatically synchronizes with Hackage daily. It would be great to have this in the regular Hackage however! Regards, Bas