While I can relate to your point, if you actually experience Blaze at Google (and Bazel too, but it has other ecosystem immaturity issues not related to reprodu

While I can relate to your point, if you actually experience Blaze at Google (and Bazel too, but it has other ecosystem immaturity issues not related to reproducibility) you will quickly change your mind. I can totally see why prior tools you used may have put bad taste in your mouth.