[Hyrum K Wright] > I think we can reasonably assume that Python 2.5 is generally > available. For reference, we currently require and SQLite that is > only 2.5-years-old.
Obligatory "what about Debian users, since that platform is always so far behind": the oldest supported Debian release, lenny, has Python 2.5.2. In about a month we'll stop supporting that, then the oldest python supported by Debian will be 2.6.6, in squeeze. (Technically, squeeze still ships 2.5, but /usr/bin/python is 2.6.) So, +1. Nobody needs to build Subversion on a platform older than Debian's oldest supported release. (: