MarsSeed [1] filed a deletion request for python-u2flib-server [2]: After 2020, the GitHub repo got inactivated. [a] The Yubco project documentation says it's deprecated and got replaced by python-fido2. [b] The successor package is available in Arch repo. [c] Not needed anymore, can be deleted. [a] https://github.com/Yubico/python-u2flib-server/tags [b] https://developers.yubico.com/python-u2flib-server/ [c] https://archlinux.org/packages/?q=python-fido2 [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python-u2flib-server/