Can I use Trac with a subtree of my subversion repository?
When setting up your Trac environment simply append the subtree of interest to the repository path, eg, if your repository resides in ‘/var/svn’ and you only want to handle a project ‘/myproject’ in Trac, you’d specify ‘/var/svn/myproject’ as your repository path. Alternatively you can change the path in the ‘repository_dir’ setting in your ‘conf/trac.ini’ inside the trac instance directory.