A demonstration of a bug in Swift Package Manager's Bundle.module handling, for Xcode Previews

Includes two modules:

• Bar

This holds the data type designed to be shared across other modules. It also holds the English and Welsh localisations for Bar.helloWorld

• FooFeature

A very small example of a feature module, which depends upon Bar. It features a View which creates an instance of Bar to access its helloWorld property, to display. The code compiles, and works at runtime. However, the Xcode Preview for this view crashes with the following error:

Application Specific Information:
Fatal error: unable to find bundle named SPM-Bundle-Bug_Bar: file Bar/resource_bundle_accessor.swift, line 27


Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   libswiftCore.dylib            	0x00007fff2c8600f4 _assertionFailure(_:_:file:line:flags:) + 532
1   FooFeature                    	0x000000010a89350c closure #1 in variable initialization expression of static NSBundle.module + 2620