ProfessorKaos64 [1] filed a orphan request for libretro-nxengine-git [2]: Hasn't been updated since 2015. I can maintain if you release it.
[1] https://aur.archlinux.org/account/ProfessorKaos64/ [2] https://aur.archlinux.org/pkgbase/libretro-nxengine-git/
