ikiwiki is a wiki system with a quite nice design. There even seems to have been some preparation for it in Sisyphus: http://www.google.com/cse?cx=014412136813254060649%3Am2__wfh9ajy&q=ikiwiki&sa=Search
License: GPL v2 or later
License: GPL v2 or later -- http://ikiwiki.info/freesoftware/
TWIMC (I've noted the upstream myself too some time ago): http://ikiwiki.info/security/ http://packages.debian.org/unstable/source/ikiwiki http://cvs.fedoraproject.org/viewvc/rpms/ikiwiki/devel/ikiwiki.spec?view=co 2 imz: why not package it yourself? :)
* Mon Oct 04 2010 Vladimir V. Kamarzin <vvk@altlinux> 3.20100926-alt1 - Initial build for Sisyphus