Woah! This really is cool!

I'm sort of amazed that git and mercurial haven't built something like that yet. Makes me a little sad that Facebook created a new scm instead of expanding mercurial to include features like this.

Facebook did contribute a lot to Mercurial back in the day; maybe not so much today.

Yes, this would be awesome for Mercurial.

Sapling is a fork of Mercurial. It isn't a completely new scm.

just type `hg serve` and that will spin-up a web UI like this one:

https://www.mercurial-scm.org/repo/hg/graph/tip

, seems to have been included since 2005 :)

I don't think you can do commits from hg serve, can you?

I'm not aware that you can