Conditional import in package based on module availability

[Alejandro_Martinez]

CanImport is often a source of confusion ^^ seems that it should do more than it does. I’m bot sire if it’s your use case but reading this may clarify some things.

SwiftPM + canImport

I don't think canImport works for this, since it is based on whether or not there happens to be a module C in the search path. If you don't explicitly depend on it, that will not be deterministic as C can be build in parallel or even after A. It can also be present from previous builds if you are building incrementally.