How do I make packages without version numbers work in Swift Playgrounds on the iPad?

Question

I‘m trying to import the Swift package https://github.com/demharusnam/SwiftUIDrag into the playgrounds app on the iPad, but it won‘t work. I suspect it might have something to do with missing version tags, but I‘m new to git and thus don’t know how to add them or otherwise solve my problem. I hope somebody knows more about this topic.

Edit: I‘m experiencing a problem, where it says it checks the version, but then doesn’t give me the option to add it to the project. I paste the link and tap enter. directly after pressing enter Then it „checks the version“ (in German), but doesn’t give me the option to add it. at the end And then I’ve included a screenshot by hacking with swift to show what it should look like. what it should look like