Right now it doesn't. This leads to subtle errors, such as mediawiki-1.8.5 keyword ppc, postgresql-8.1.9 keyword ~ppc, this doesn't work, and only after installing mediawiki and trying to configure it does the error appear. Reproducible: Always Steps to Reproduce: 1. Install mediawiki with stable keywords on a platform with up to mediawiki-1.8 and postgresql-8.0 stabled. 2. Try installing mediawiki 3. Try configuring it. Does mediawiki also require php to have support for the respective databases?
No it definitely shouldn't. http://www.gentoo.org/proj/en/webapps/webapp-eclass.xml