You are totally right.
But with the "normal" version of Trisquel is way easier. Take this as an
example (I will try (when I got the time) to make tutorial about it).
'''1 -''' Install Trisquel 6.0 (or other version)
'''2 -''' Install the fallowing packages:
sudo apt-get install apache2 mysql-server-5.0 php5 php5-mysql
This will install the Apache Server with for php and mysql. You can then test
it by creating a file named '''index.php''' in '''/var/www''' with ''''''
inside.
'''3 -''' Enjoy (normally during the installation a message asking for a
MySQL password has popped up in the terminal. If it is not the case tell me).
Hope this helped.