Stable type identifiers: a missing piece for crABI and export
Rust Internals [Unofficial]
April 2, 2026
ParaDevOne:
> serialization, networking, or plugin systems
Networking is really using serialization under the hood, and plugin systems generally require ABI considerations to be safe. However I can see your point for serialization of open sets of types.
BY the way that issue was eventually closed by its creator with a comment stating "I personally haven't felt the need for a "stable type id" in awhile".
Discussion in the ATmosphere