Hi Guix and Gabriel, Gabriel, since you provided the initial patch to add dedukti and the emacs mode, I thought you might be interested, so I CC'd you. Feel free to ignore if you've moved to something else :) Attached is a patch to update dedukti to the latest version, 1.7. The patch works and dedukti seems to be working, though I don't really know how to use it, so maybe not :) The issue is with its dependent emacs-dedukti-mode. It embeds a reference to the "dkcheck" tool that does not exist in this version of the package. Instead, you're supposed to call "dk check" (the --help still mentions dkcheck, so maybe I did something wrong in packaging?) I noticed that emacs-dedukti-mode is 5 years old and unmaintained upstream, while there is a dedukti-mode provided in the git repository of dedukti that is only 2 years old. I don't use emacs and I don't know how to solve this issue, so I'm not updating the package yet. I'd appreciate some help, either to find a better substitution pattern in the current emacs-dedukti-mode package, or to package the one provided by dedukti, or maybe to figure out another direction I didn't see :)