Gentoo : Running Cacti with LigHTTPD

If you use Gentoo and tried to install Cacti with Lighttpd instead of Apache, chances are that you ran into this error message :

/usr/lib/python2.6/site-packages/WebappConfig/ DeprecationWarning: the md5 module is deprecated; use hashlib instead
  import md5, re, os, os.path
* Fatal error: Your configuration file sets the server type "Apache"
* Fatal error: but the corresponding package does not seem to be installed!
* Fatal error: Please "emerge >=www-servers/apache-1.3" or correct your settings.
* Fatal error(s) - aborting

You can solve that problem by editing the following file : /etc/vhosts/webapp-config and set vhost_server="lighttpd".

For further reference, you’ll also need the following USE flags for PHP :

spaghetti etc # grep php /etc/portage/package.use 
dev-lang/php		cli cgi mysql xml session pcre sockets

The rest of the installation is pretty straight standard and is already well documented (here, there, or even there).