message: Start a build target for core files
diff: @@ -248,6 +248,18 @@ py_library(
  ],
  )
  +py_strict_library(
  + name = "core",
  + visibility = [
  + "//tensorflow:__pkg__",
  + ],
  + deps = [
  + ":tf_decorator",
  + ":tf_stack",
  + "//tensorflow/python/types",
  + ],
  +)
  +
  # This target should only be used for API generation.
  py_library(
  name = "modules_with_exports",
  