Distribution repo for pre-built binaries of CiteprocRs.xcframework, the FFI module from citeproc-rs, built for use in the Swift bindings for it, CiteprocRsKit.
The Package.swift file here simply refers to a download URL on the CiteprocRsKit repo, along with a checksum.
There's not much use depending on this directly in SwiftPM -- you want to add CiteprocRsKit instead.
// set TAG to an appropriate version etc
.package(url: "/~https://github.com/cormacrelf/CiteprocRsKit", from: "TAG"),