Has anyone used Darcs [0]? Its design based around a patch theory [1] looks very compelling to me, but I haven't tried it myself.
[0]: http://darcs.net/ [1]: https://en.wikibooks.org/wiki/Understanding_Darcs/Patch_theo...
[0]: http://darcs.net/ [1]: https://en.wikibooks.org/wiki/Understanding_Darcs/Patch_theo...
There's a more modern reincarnation of the similar ideas — https://pijul.org. Ready for playing with, not much else.