# Instalando el servidor Apache version 2
sudo apt-get install apache2

# PHP5
sudo apt-get install php5

# Servidor MySQL
sudo apt-get install mysql-server-5.1

# Módulo de apache para mysql
sudo apt-get install libapache2-mod-auth-mysql php5-mysql

sudo apt-get install phpmyadmin  # opcional

sudo apt-get install mysql-query-browser  # opcional ( MYSQL query browser)

sudo apt-get install vim # an useful editor

sudo apt-get install meld # a freaking easy merge tool

sudo apt-get install openjdk-6-jre # yeah sun-java6-jre is  deprecated now in Lucid at least in the beta

sudo apt-get install mercurial # of course

Download Eclipse Ganymede not Galileo

http://www.eclipse.org/ganymede/

Note: There are some issues with Eclipse Galileo, when you trying to install  *obligatory* plugins like PHPEclipse, Mercurial or SVN, simply it does not work.

Add this plugins:

PHPEclipse

http://update.phpeclipse.net/update/stable/1.2.x/

Mercurial

http://www.vectrace.com/eclipse-update/

SVN

http://subclipse.tigris.org/update_1.4.x

At least but no last do a :

hg clone https://chamilo.googlecode.com/hg/ chamilo

To get your last Installation of Chamilo

And for turn an SVN/Mercurial project to a PHP project in order to have the inspect function feature edit your .project file and add this:

<buildSpec>
<buildCommand>
<name>net.sourceforge.phpeclipse.parserbuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>net.sourceforge.phpeclipse.phpnature</nature>
</natures>

Here the short way for install the deb packages:

sudo apt-get install apache2 php5 mysql-server-5.0 libapache2-mod-auth-mysql php5-mysql phpmyadmin  mysql-query-browser vim meld openjdk-6-jre mercurial vim

If you have some issues with the openjdk6-jre installation you may try installing this version.