Following line from Xcode build log shows that Xcode is building swift package dependencies as universal binaries
CreateUniversalBinary .../UIComponents.o normal arm64\ x86_64 (in target 'UIComponents' from project 'PlatformPackages')
Also confirmed with lipo
lipo -info UIComponents.o Architectures in the fat file: UIComponents.o are: x86_64 arm64
Is it possible to build swift package for active architecture only? Or for selected architectures based on configuration.