First published on NZ Techonverse
Gimp now seems to be consistently storing its config files in ~/.config/GIMP/x.xx (where x.xx is the version/release number). This applies even to the flatpak version, which is supposed to be sandboxed within the var area. The files such as menurc which stores the keyboard shortcuts can be copied from one computer to another using these config paths. There was a suggestion that 2.10.xx was using a ~/.var/ based path but 2.99 beta has cleared up confusion by only using the ~/.config/ path.