Sliders-SwiftUI SPM can't find Shapes dependency

SPM can't resolve the Shapes repo so installation fails. I have a theory as to why the resolution fails, but I could be totally wrong. I noticed that the URLs for the dependencies in the Package.swift file use repo names that don't match up with the current names of the repos for Shapes and bez packages. The bez package works fine with the URL in the Package.swift file, but the Shapes one doesn't, so I tried entering the URLs in my browser and sure enough https://github.com/kieranb662/bez redirects to https://github.com/kieranb662/SwiftUI-bez, but https://github.com/kieranb662/Shapes results in 404. I know GitHub redirects old repo names to the new name when a repo is renamed, but perhaps the redirect broke somehow.

Disclaimer - I'm new to SPM so this could be a silly mistake on my end