I’ve added the source code gplates_2.3.1-beta.5_src.zip to the above link (which is here). So anyone on an Arch Linux based system (like Manjaro) can try that out.
Karn has confirmed it compiles on his Arch Linux. And it compiles for me on Manjaro 21.3.7 (which also uses gcc 12 and Boost 1.80). The compiled GPlates works for me (except for loading NetCDF grids). However, Karn and I are currently going through a potential OpenGL issue on his system (the grid lines and geometries are not rendering).
Thanks for that, it’s very helpful.