message: Remove the | operator from the depset construction in our rules_protobuf bazel file.
diff: @@ -313,9 +313,7 @@ def _compile(ctx, unit):
  protoc_cmd = [protoc] + list(unit.args) + imports + srcs
  manifest = [f.short_path for f in unit.outputs]
  - transitive_units = depset()
  - for u in unit.data.transitive_units:
  - transitive_units = transitive_units | u.inputs
  + transitive_units = depset(transitive = [u.inputs for u in unit.data.transitive_units])
  inputs = depset(transitive = [unit.inputs, transitive_units]).to_list() + [unit.compiler]
  outputs = list(unit.outputs)
  