message: Fix _cuda_set types
diff: @@ -281,14 +281,14 @@ def _no_canonical_prefixes_group(extra_flags):
  def _cuda_set(cuda_path, actions):
  if cuda_path:
  - return flag_set(
  + return [flag_set(
  actions = actions,
  flag_groups = [
  flag_group(
  flags = ["--cuda-path=" + cuda_path],
  ),
  ],
  - )
  + )]
  else:
  return []
  @@ -415,7 +415,7 @@ def _features(cpu, compiler, ctx):
  ),
  ] + _cuda_set(
  ctx.attr.cuda_path,
  - all_compile_actions,
  + all_compile_actions(),
  ) + [
  flag_set(
  actions = all_compile_actions(),
  