Or have the build system check if the SDK name ends in ".internal" and change the name and/or complain if so.

Seriously, adding licensing requirements is silly when most likely the engineers responsible just need to know what's going on.

comex's second comment pretty much sums up the whole situation. It's bizarre that anyone even has other ideas at this point.

It feels like shoddy work by Apple engineers, actually. Seriously, making use of an open source library and breaking it (indirectly) for everyone else in the process?

"Shoddy work" is maybe a little over-the-top, but I certainly agree that they've screwed up here by not thinking through the implications of the system within which they've made all their design/coding choices (or considering the impenetrability of the system to outside developers, who's work they're happy to use, but who then have very few other workable option except "public shaming" when this sort of unintended consequence occurs).