SwiftPM

Developers frequently encounter inexplicable build failures requiring manual nuking of `.build`, SwiftPM caches, or Xcode derived data. Packages mysteriously disappear in Xcode and builds trigger more than expected, affecting both macOS and Linux.

SwiftPM's architecture exposes targets to downstream projects, prevents targets from depending on products in the same package, and target/module name conflicts are problematic. This forces convoluted project structures and workarounds.