During a cleanup of my system was un-installing ECLiPSe 7.0 and was prompted with
Perhaps something similar should be added to the SWI-Prolog uninstall. (ref)
I don’t see a need to do this anytime soon but it would be nice. I would submit a pull request but am really involved with learning how to use and control Docker (images, containers, etc.) from SWI-Prolog and don’t know how to modify the install wizard, so that would be a time consuming learning experience and quite confusing in the middle of another elaborate learning experience.
For those not aware, there is no need to uninstall SWI-Prolog before installing, but sometimes a full uninstall is useful.