The current bug tracking system is located at http://www.selenic.com/mercurial/bts

Requirements: be in Debian Sarge, have minimal dependencies that aren't already on server

Pluses: Python, no SQL backend, easy setup, full-featured email support, scripting hooks, familiar UI

Minuses: PHP 

                    language    db          ui       email     hooks    comments
bugzilla            perl        mysql       ok       some      
roundup             python      sqlite?     good     good      good?
request-tracker     perl        mysql/pg    slow     good?              lots of extra dependencies
mantis              php         mysql
debbugs             perl        none
jitterbug           c           none