xiota [1] filed a deletion request for quassel-core-lighter-git [2]: I adopted this package to try to fix it. While working on it, I realized that this is a duplicate of one of the packages created by the quassel pkgbase.
[1] https://aur.archlinux.org/account/xiota/ [2] https://aur.archlinux.org/pkgbase/quassel-core-lighter-git/