@michal.h21 do I need to update your make4ht? I just tried it and get error on `-e`, here it is : (my first time using your build!)
>
>ls ~/main.mk4
/home/me/main.mk4
>ls foo.tex
foo.tex
>make4ht -e ~/main.mk4 foo.tex
setting param packages
make4ht:unrecognized parameter: e
make4ht - build system for tex4ht
Usage:
make4ht [options] filename ["tex4ht.sty op." "tex4ht op." "t4ht op" "latex op"]
-c,--config (default xhtml) Custom config file
-d,--output-dir (default nil) Output directory
-l,--lua Use lualatex for document compilation