What do you mean by AUR?
Arch user repository
I don't know much about build scripts, but if its just an exe, i think you can just compile and set arch as a target?
As long as you can do that every time it shouldn't be too hard
Does the linux build not work for you? I followed the official itch guidelines to make it as portable as possible across distributions.
It builds for you on aur, but i think because yours is a simple executable with a shell installer ill try and see if it worksbut once theres multiple files and alot of code AUR would be nice