[bug#56356] [WIP PATCH] gnu: dedukti: Update to 1.7.

[Julien Lepiller]

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 :)

0001-gnu-dedukti-Update-to-2.7.patch
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