retroarch /var/lib/flatpak/exports/bin/org.libretro.RetroArch ~/.config/retroarch/cores ~/snap/retroarch/current/.config/retroarch/cores ~/.var/app/org.libretro.RetroArch/config/retroarch/cores /usr/lib/x86_64-linux-gnu/libretro /usr/lib64/libretro /usr/lib/libretro /usr/local/lib/libretro /usr/pkg/lib/libretro