The quick-and-dirty way to do this would be to hard-code a top-level version constant, but that would require a manual (and therefore error-prone) process of updating it for every release.

A better solution would be to pull this information from git during the build process (maybe using GYB?).

Even better would be if the Swift Package Manager had a way to generate these symbols at build time. Does anyone know if this is currently possible? And if not, what do you think about requesting this through Swift Evolution?