kopecs [1] filed an orphan request for c0 [2]: The package has been unmaintained and out of date since at least Oct 2020, and the maintainer is unresponsive to pull requests on the github repo they've identified as the contact method.
[1] https://aur.archlinux.org/account/kopecs/ [2] https://aur.archlinux.org/pkgbase/c0/
