Re:Heptapod – Mercurial for Gitlab
by klodolph on Wednesday August 26, 2020 @11:45PM
(#24289937)
Facebook and Google may use it but it serves, more or less, as a front-end to something else. Especially at Google, where it is optional to use Mercurial at all.
Also big companies such as Facebook and Google use it because it's more extensible.