a821 [1] filed a deletion request for z88dk-splib2 [2]: Old package last updated in 2015. Sources are 404. This was a binary library hosted in dropbox that has nothing to do with the upstream project z88dk (AFAICT, I didn't do an extensive search). The packages z88dk{,-git} are available in the AUR. Safe to delete. [1] https://aur.archlinux.org/account/a821/ [2] https://aur.archlinux.org/pkgbase/z88dk-splib2/