Installing trac, requires subversion, which requires Apache, Python, and the MediaTemple developer tools. To enable the Media Temple developer tools, login to the (mt) account manager, select Admin, then Root and Developer tools. Make sure the developer tools in is installed, if it's not, then click the Install button. Automatically installed will be the subversion software. A link there to the knowledgebase will tell you everything that is installed and can be used.

http://isnot.tv/text/307/installing-trac-011-on-mediatemple-dv-35-servers/

This is what I have done to process setting up my things.

1. Login to (mt) Access Control Center
2. Setup the Developer Tools
3. Login to server using SSH
4. Execute the following commands
   1. Run the following commands:
   2. mkdir /var/svn
   3. chmod -R 777 /var/svn
   4. svnadmin create --fs-type fsfs /var/svn/reponame
   5. svn mkdir -m"trunk creation" file:///var/svn/reponame/trunk
   6. svn mkdir -m"trunk creation" file:///var/svn/reponame/branches
5. In an SVN controller use the following to connect to SVN repository
   1. Location: SVN
   2. Server name: <domainname>
   3. Repository path: var/svn/reponame/trunk
   4. Enter the username and password entered in the "passwd" file

Repeat steps from 4.3 on to 5.4 when building a new project repository.