Hi Chet,
I would try the config file with your current distribution first. It is
possible that the validation issue will be fixed just with these
definitions. Otherwise, it is best to use the TeX Live distribution from
https://www.tug.org/texlive/. But the new version will be released in few
weeks, so I don't think it is the best time to install it right now. You
can also try Docker, I think for example this should work:
https://github.com/islandoftex/texlive.
But as I said, try the updated files first, maybe it isn't necessary to
install anything.
Best regards,
Michal
Michal,
>
> Thank you for your kind and rapid response! Um, do you have a
> recommendation for the right versions of tex4{ebook,ht}, and what other
> software I should be compiling from sources? Or if there's a Linux distro
> (let's say, Ubuntu or Debian's latest bleeding edge) I could get that
> working in Docker.
>
> I'd like to have the right software before proceeding.
>
