issue-tracking + subversion (via svn+ssh)

I'm attempting to coordinate issue-tracking software with my
subversion repository.

We have an existing Bugzilla database and an existing subversion
repository that is accessed via svn+ssh through a single account, as
described in the manual here:

http://svnbook.red-bean.com/en/1.6/svn.serverconfig.svnserve.html#svn.serverconfig.svnserve.sshtricks.setup

I looked into using SCMBUG to do the coordination, but I have to be
running on the same server as the bugzilla database (which is handled
through the 'apache' user) and then need direct file access to the
subversion access, which I have restricted to the 'svnuser' user.

So at first, second and third glances, I don't see any way to do this.

Therefore I'm looking at using Trac instead: I can start a separate
Trac server under the 'svnuser' account, which would then have safe
direct file access to the subversion repository.

But this means that I have to convert my existing Bugzilla database to
Trac, and some users will have to learn a new tool, not to mention
getting management approval for a different process.

Has anyone else dealt with Bugzilla integration with a
restricted-access repository like this? And if you abandoned
Bugzilla, what issue tracker did you use instead?

Thanks, Ted

-- 
 Frango ut patefaciam -- I break so that I may reveal