Hi Adam, Adam Porter writes: > OTOH, if anyone knows why the transformation option failed in that way, > it might be helpful to solve it if possible, so users could use the > option to install future releases without having to modify the package > definition. (AFAIK, I was able to do that for various Emacs 28 versions > without this problem, so I wonder if something's changed.) It's probably because emacs is missing the emacs-native-comp-driver-options.patch patch of emacs-next. Package transformations can't and won't replace the manual work of packaging new versions, so I think it is unreasonable to expect emacs 28's package definition to work with emacs 29. Best, -- Josselin Poiret