The current cacti ebuild (0.8.3) requires mysql to be installed on the local machine. This is incorrect. While cacti does require access to a mysql database, it *does not* have to be installed on a local machine and can just as easily connect to a mysql server on another machine. The rdepend on mysql should be removed and/or added as an optional USE dependency.
mostly all of our webapps could run on not-local mysql server