I would like to have some manner of 'forum' capability inside fossil. It need not be very complex, but having the ability to have groups of discussions, and show the contents grouped by discussion threads would be extremely useful to me.

I'm willing to work on adding such a feature if nobody else has; but I'm not sure what the proper underpinnings should be (and how to make sure the forum information gets properly cloned etc).

anonymous added on 2011-02-17 05:29:00 UTC:
Since Fossil wiki page support comments, a forum interface could be written in Javascript. Each forum would be a wiki page. Adding a new topic would add a comment to the forum page, referencing the new topic, then add a topic page. Replies would then be added as comments to the topic pages.

Of course, given that Fossil is a developers' tool, I would expect most discussion to be attached to tickets, so really only need a simplified way to append new comments to tickets.