> So people who say sys.platform shouldn't be used: what do you propose
> to do with Lib/plat-linux2 (or, more generally, Lib/plat-*)?

I can't speak, as I've never used those.
But can't those directories be renamed to Lib/plat-<platform.system()>?

As for the performance overhead, since the platform module caches the result of uname or other function/subprocess calls, I don't think it's a showstopper. Furthermore, I somehow doubt those functions are performance bottlenecks anyway.

Since Linux 3 is in RC now, is there a chance to reach a consensus in the near future?