The admin docs state:
> We use PyLucene for our search functionality. It can be
> complicated to install, and requires a working Java
> installation.
Just in case, did you look at xapian.org? It's quite amazing an indexer/search engine (powering gmane search among others) written in C++, and it does have python bindings as well as xappy the higher-level interface.
I use it with recoll.org for local docs/mail search and with Xapian Omega for LAN indexing (e.g. bugzilla attachments search), the speed is stunning and Recoll's results are more accurate for me than Google's, when applicable.
Thanks!