Google uses Bazel (or Blaze, which it's based on) for almost all their proprietary code, at least. Their big open source projects, Android and Chrome and now F

Google uses Bazel (or Blaze, which it's based on) for almost all their proprietary code, at least. Their big open source projects, Android and Chrome and now Fuchsia, seem to have very different coding cultures from the rest of Google. I've used both repo and depot_tools a bit and both are pretty bad -- very thin and leaky abstractions on top of the source control system.