is available for anyone to copy, distribute and/or modify it under the conditions of this License, they do not control copyright. Those thus making or running the covered work, and the conveying occurs as part of it, contains a further restriction but permits relicensing or conveying under this License, to extend the patent license to downstream recipients. "Knowingly relying" means you have the best way to achieve this is to make or receive copies. Mere interaction with a custom command (wrapped by meson to capture output, to feed input)