message: Stabilize the order of definitions in schema_py_generated.py
  This makes it reproducible.
diff: @@ -385,7 +385,7 @@ def _concat_flatbuffer_py_srcs_impl(ctx):
  # If you're changing the commandline below, please build wheels and run smoke
  # tests on all the three operating systems.
  command = "echo 'import flatbuffers\n' > %s; "
  - command += "for f in $(find %s -name '*.py'); do cat $f | sed '/import flatbuffers/d' >> %s; done "
  + command += "for f in $(find %s -name '*.py' | sort); do cat $f | sed '/import flatbuffers/d' >> %s; done "
  ctx.actions.run_shell(
  inputs = ctx.attr.deps[0].files,
  outputs = [ctx.outputs.out],
  