satanych  filed a request to merge libretro-pcsx2  into libretro-pcsx2-launcher :
This package should be renamed, because there is now an official libretro core for pcsx2: https://github.com/libretro/pcsx2, which (may/will) use the current package name. So It needs to be done for prevention of packages misnaming.
 https://aur.archlinux.org/account/satanych/  https://aur.archlinux.org/pkgbase/libretro-pcsx2/  https://aur.archlinux.org/pkgbase/libretro-pcsx2-launcher/
Request #22049 has been accepted by Foxboron .