@ben_crowell_fullerton OK it compiles. I have had to comment the line \pdfmapfile{=fullembed.map} in calc.tex and change the export of inkscape in Makefile to --export-pdf-version as the other was deprecated. The new code is at https://codeberg.org/educode/calculus as I try to #quitGithub (and every #gafam tool) as #MicrosoftBehaveLikeEvil and does not respect the licences (not his own contracts)