In regular projects, there is an "Export Localizations" option in the Product menu, but for Swift Packages, this is not available.
Adding local Swift Packages as dependencies of a regular project and using Export Localizations on the regular project doesn't include the Localizable strings from the Packages' sources either.
The command-line version (xcodebuild -exportLocalizations) has the same restrictions.
Is there a way to export NSLocalizedString occurrences to an xliff for Swift Packages? Or are we supposed to do things manually for now?