RFC: SwiftPM support for ensuring a correspondence between product name and Swift module import name

[jrose (Jordan Rose)]

@Aciid

Can we be confident that we'll get a similar behavior from the thing that will eventually replace @_exported ?

I can't quite promise that, but I do intend to propose something like it in the post-Swift-5.0 timeframe (reference again). It's tied up with other stuff, though, so it's possible the Swift community will decide it's better to have some other functionality instead.