Bazel has some level of support for many languages: https://docs.bazel.build/versions/master/be/overview.html#additional-rules https://docs.bazel.build/versions

Bazel has some level of support for many languages: https://docs.bazel.build/versions/master/be/overview.html#additional-rules https://docs.bazel.build/versions/master/be/overview.html#ad... I know the Scala rules are used in production by multiple companies. Rust support is improving quickly, but it's not perfect. See the dedicated GitHub repositories for more information. (I work on Bazel)