- `vector <http://hackage.haskell.org/package/vector>`_
- `snap-server` <http://hackage.haskell.org/package/snap-server>`_, version
0.8.1 and above.
+- `process <http://hackage.haskell.org/package/process>`_, version 1.0.1.1 and
+ above
These libraries are available in Debian Wheezy (but not in Squeeze), so you
can use either apt::