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OK, that makes a lot more sense. So the One True Repo is Perforce (it's hilarious to me that Google use Perforce[0]), and there are shims to use it as if it was

OK, that makes a lot more sense. So the One True Repo is Perforce (it's hilarious to me that Google use Perforce[0]), and there are shims to use it as if it was Mercurial or Git, but the Git one got killed and hasn't been replaced. Thanks so much for the extra information! [0] I have no real opinion on Perforce, but I always thought that the reason game studios used it was to deal with binary assets, and I'm surprised that Google would have lots of those.

eterevsky 5y ago
It's not Perforce. It was Perforce 20 years ago. Since then it was completely rewritten, while preserving some backwards compatibility. Here's an article that I've found: https://cacm.acm.org/magazines/2016/7/204032-why-google-stores-billions-of-lines-of-code-in-a-single-repository/fulltext https://cacm.acm.org/magazines/2016/7/204032-why-google-stor...