MarsSeed [1] filed an orphan request for mkxp-git [2]: Please kindly disown this package if no willingness to maintain.
Another user already suggested enhancements in a comment made in Feb 2020. Now the package is broken and needs some TLC. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/mkxp-git/