This little guide will show how to set up Eclipse for developing PHP sites using PHP Development Tools Project and Subversion.

svn co https://svn.edgewall.org/repos/trac/trunk trac
sudo apt-get install python-setuptools
sudo apt-get install python-subversion subversion python-pysqlite2 python-clearsilver
sudo python2.5 ./setup.py install

sudo mkdir /var/lib/svn/NAME
sudo trac-admin /var/lib/trac/NAME initenv
sudo trac-admin /var/lib/trac/NAME permission add USERNAME TRAC_ADMIN
sudo chown -R www-data /var/lib/trac/
sudo chown -R www-data /var/lib/svn/

Use the admin tool on the webpage to setup rights.
Apache2 setup:

# Trac support
<location /trac>
AuthType Basic
[...]