By CvsBasedWiki I mean, not a wiki that uses CVS to store versions of its pages, but a wiki extension made to something like CvsWeb.
Essentially, a CVS repository is a filesystem. So I want an appropriate FilesystemBasedWiki.
Basically, if you already have a Web interface to the CVS repository, you would just ensure that the FilesystemBasedWiki scripting works in the files supplied from the CvsWeb interface.
A CvsBasedWiki would have extensions to allow links to particular versions of pages, etc., to be specified. As well as extra scripts to allow checkin and checkout.
A CvsBasedWiki would be part of a WikiForLiterateProgramming.