Buck far predates Bazel, and was built by ex-googlers replicating Blaze.
Skylark was a later evolution, after the python scripts grew out of control, and a cue that fb took from Google long after Buck had been near-universally deployed for several years.
Skylark was a later evolution, after the python scripts grew out of control, and a cue that fb took from Google long after Buck had been near-universally deployed for several years.