I've been trying out fossil[1] for some small personal projects, it's a DVCS based on SQLite (from the same author, drh) and includes a wiki and issue tracking.
I think I might even be starting to prefer it to git/git(lab|hub).
I have used Fossil for years for absolutely everything which needs - or might potentially one day benefit from having had - any kind of versioning. Clear, concise, lightweight, minimalist, utterly brilliant tool from tthe utterly brilliant D. Richard Hipp. To my ongoing astonishment, many accomplished people have never even heard of it.