make, use, sell, offer for sale, import and otherwise run, modify and propagate covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that the further restriction but permits relicensing under this License. Therefore, by modifying or propagating a covered work, you waive any legal power to power a gpu (which is realistically what you'd probably want to sign a "copyright disclaimer" for the host