MarsSeed [1] filed a deletion request for mingw-w64-openjpeg [2]: Unused legacy openjpeg1 build from 2017. I think it is safe to delete. AUR has a w64 package for openjpeg2, which is the currently maintained library. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/mingw-w64-openjpeg/