Any known attempts/implementations of metacircular VCS?
Any data about something like version control system which is a version control system for itself (but not limited for this only task, like regular vcs but with a fancy developing process) in single peace of software?
Can you clarify? Historically many VCS/SCMs are self-hosting, but I’m not certain that’s what you are asking for.
Fossil is a SCM tool that also comes bundled with a wiki and other tools to document a project and store artifacts, if that’s closer to what you’re looking for: https://www.fossil-scm.org/home/doc/trunk/www/index.wiki