Creates a PLIST file out of a Swift Package Manager resolved JSON, including its GitHub license. The PLIST can then be used by your app to show the third-party libraries included in your app, by using one of the many Acknowledgement ViewControllers available for CocoaPods, such as https://github.com/vtourraine/AcknowList which is the one this script was tested with.
Because this script's output matches perfectly the one from CocoaPods, you can merge both PLISTs into one and have your Acknowledgement screen showing all the dependencies you use in your app either if they come from SPM or Pods.
The license is fetched from GitHub and the unauthenticated API limit is around 60 requests per hour. If this is not enough for you, this script supports OAuth Client credentials, so you can register your own GitHub application and call this script using your ClientID and ClientSecret and increase the limits to about 5000 per hour.
To register a GitHub application please follow this link: https://github.com/settings/developers
Without GitHub token
> swift run spm-ack generate-plist ~/MyProject/MyProject.xcworkspace ~/MyProject/Resources/SwiftPackageManager.plist
With GitHub token
> swift run spm-ack generate-plist ~/MyProject/MyProject.xcworkspace ~/MyProject/Resources/SwiftPackageManager.plist MyClientID MyClientToken
Instead of using CocoaPods PLIST as output, we plan to have our own JSON and allow this script to also convert CocoaPods PLIST into this JSON format. The benefit is allowing more information to be stored in the JSON, such as GitHub etag to avoid fetching when this is not needed. The drawback is that this will break compatibility with other Acknowledgement ViewControllers implementations, and we'll need to provide a new one. To avoid that, when this is implemented, both options will be available for you to choose.
Also it's planned to support other SPM sources such as BitBucket or GitLab, but this is not our first priority at this point, so please feel free to contribute in case this is useful for you.