Hi, I have start Web_application_package_guidelines. http://wiki.archlinux.org/index.php/Web_application_package_guidelines I suggest to discuss and improve our web packaging standard. PS. to avoid discussion about webapps useless. There are (at least) - phpmyadmin - phpldapadmin - phppgadminwhich have no need in multiple instances on different virtual hosts and useful even on localhost.
