MarsSeed [1] filed a deletion request for psx [2]: Dead foreign-built binary PSX emulator from 2007; source code unavailable as this was closed source. PKGBUILD does not install the needed license (which seems to be unknown/undeclared by author).
Upstream website gone. Some AUR dependencies are unbuildable with current libtool. Not worth keeping. There are many working alternatives nowadays that are maintained. Most of them are also open-source. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/psx/
