Request #17075 has been accepted by diabonas [1]: See PRQ#17074 (https://lists.archlinux.org/pipermail/aur- requests/2020-January/036273.html): please elaborate on what you mean by "upstream doesn't support this port", upstream development for this project still seems to be active.
[1] https://aur.archlinux.org/account/diabonas/
