fryfrog [1] filed a deletion request for python2-sabyenc [2]: python2 is dead. Long live python3. This package was for sabnzbd when it didn't work on python3. Now it works on python3 and this isn't needed. Yay.
[1] https://aur.archlinux.org/account/fryfrog/ [2] https://aur.archlinux.org/pkgbase/python2-sabyenc/
