Trac on Fedora Core 4 (and higher)

Verify you have configured Yum to use Extras repo (which is enabled by default) and run:

$ sudo yum install trac

Yum will take care of all dependencies (clearsilver) and will fetch and install them for you automatically.

Next, you need to edit /etc/httpd/conf.d/trac.conf to point to your trac environment and restart apache.