message: Note another compatibility constraint
  Summary: Just one I thought of.
diff: @@ -40,6 +40,7 @@ In this section we outline where we don't comply with the [Starlark spec](https:
  * We follow proper lexical binding for list comprehensions, so each `for` clause introduces a fresh variable (_deliberately_).
  * We allow comparison between `None` values (_deliberately_).
  * In some cases creating circular data structures may lead to stack overflows.
  +* We use 32bit fixed size integers. Constructing larger values will result in Starlark failing with an overflow error.
  * There are a number of minor incompatibilities or places where the spec is unclear, many of which are included in our tests.
  ## License
  