Hi! I have loads of clpr in my code so i could help out. Not sure where to find the modified clpr module though… Is it here somewhere GitHub - SWI-Prolog/swipl-devel: SWI-Prolog Main development repository? I am not that good at GitHub.
Thanks.
Are you using the git sources? If so, it is fairly easy. Do the usual update. Now go tp packages/clpqr and run
git fetch
git checkout module-names
Go back to the build directory and run ninja install (or make install, depending on how you normally install).
If you are not using the (git) source it gets a bit trickier. I think you could go to GitHub - SWI-Prolog/packages-clpqr at module-names, use from the code button Download zip and unpack that into your installation in librtary/clp such that the paths are preserved and the toplevel files end up in the clp directory. No additional installation should be needed. It might be wise to first make a copy of the clp directory 
I moved these replies out of the Announce category.
You should be able to do what you did earlier without the system intervening.