tachy [1] filed a deletion request for thunderbird-exchangecalendar- git [2]: I have not used this package myself for 3 years, have now disowned it, and users are reporting that the source git is outdated. [1] https://aur.archlinux.org/account/tachy/ [2] https://aur.archlinux.org/pkgbase/thunderbird-exchangecalendar-git/