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I'm not sure how Mercurial is relevant. From reading the Buck2 getting started docs, it looks like it works just fine with Git repos.

• rektide 4y ago
  It indeed is not the primary concern of build systems. For many folks, there's some ci/CD systems checking stuff out & feeding their build tools. Buck2 notably though tries to be a good persistent incremental build system, and it needs much more awareness of things changing. It does integrate with Sapling for these kind of reasons. So the boundaries are a bit blurrier than they used to be between scm/build/ci/CD tools.
  • fanzeyi 4y ago
    My understanding is that Buck2 uses Watchman (disclaimer: I'm one of the maintainers) so it can work with both Git and Mercurial repositories efficiently, without compromising performance.
    • ndmitchell 4y ago
      It can use watchman, but for open source we default to inotify (and platform equivalent versions on Mac/Windows) to avoid you having to install anything.