Swift Package file - resources .copy rule with nested directories

Does anyone know if the resources .copy rule in a Swift .package file is supposed to recursively copy the full contents if it's pointed at a directory?

The docs say…

If you pass a directory path to the copy rule, the compiler retains the directory’s structure.

…but you can interpret that in a few different ways.

It also doesn’t appear to work if the directory you specify only contains directories.

Swift Package file - resources .copy rule with nested directories
 
 
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