[Typing-sig] Re: Supporting sys.platform.startswith in type checkers

6 for openbsd: https://en.wikipedia.org/wiki/OpenBSD_version_history 7 for NetBsd: https://www.netbsd.org/releases/formal.html Some ARE pretty old though. Most of the implications here is that type checkers will know to avoid definitions meant for those operating systems without needing to change the stubs when a new OS comes out + being less verbose than mentioning each os version.