A simple tool for cabal database query

Command

• diff: run the diff command between two different versions of a package.
• revdeps: print all reverse dependencies of a package.
• info: print all available versions of a package and some misc information.
• search-author: search all the database for match in the author field.
• search-maintainer: search all the database for match in the maintainer field.

check the original blog post for more information:

[http://tab.snarc.org/posts/haskell/2013-03-13-cabal-db.html]