I know less about Bazel then Vlad does so he may have a better answer. But Earthly lets you use your languages build tool and expects but does not enforce that

I know less about Bazel then Vlad does so he may have a better answer. But Earthly lets you use your languages build tool and expects but does not enforce that the individual steps you call are reproducible. So it is a less granular approach than Bazel which we think offers a lot of same benefits but without guaranteed bit for bit reproducibility. You can do non-repeatable things in a `RUN` but if you don't then it works well and you get to use all your existing tooling rather than having to replace them.