Eli Zaretskii <eliz@gnu.org> writes:

> Please try again.

Compiling the refcards to PDF works, but I'm still facing an error for
the compilation to PostScript (I do have texlive-mex installed):

  $ make -C etc/refcards ps
  [...]
  if ! kpsewhich -format=fmt mex > /dev/null; then \
    echo "No mex format found."; false; \
  fi
  No mex format found.
  Makefile:236: recipe for target 'pl-refcard.dvi' failed