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by est31 1638 days ago
Git is the subject of the linked e-mail. Mercurial is the big contender to git that is not written in a C language. Their response to Hg's performance issues was not to use or create some Python feature that allows them to speed up some fast paths, but to use a proper low level language in the first place, which happens to be Rust. I'm not sure you can get more relevant to the discussion than this.

The trend seems to go away from high level languages in the VCS space. Developer time is one of the most expensive resources that FANG pays for, so any kind investment in performance improvements is going to pay off quite well.