pdflatex on TL2020 complains about not finding l3backend-pdfmode.def

David Carlisle d.p.carlisle at gmail.com
Wed Sep 30 19:12:25 CEST 2020

On Wed, 30 Sep 2020 at 18:02, AC <achirvasub at gmail.com> wrote:

> Thank you! Your first suggestion resolved it (more below).
> On September 28, 2020 4:19:52 PM EDT, David Carlisle <
> d.p.carlisle at gmail.com> wrote:
> >the backed file is now l3backend-pdfmode.def (or l3backend-luatex.def)
> >the
> >pdfmode.def file is no longer used.
> Just curiosity: was there a typo above? You write that the backend file is
> l3backend-pdfmode.def, but that's exactly the file I was missing..

yes sorry,  l3backend-pdfmode.def is the old name and no longer needed, the
functionality is now split so l3backend-pdftex.def if you are using
pdflatex and l3backend-luatex.def if you are using lualatex.

> >If it is being referenced then either your formats didn't get remade
> >fmtutil-sys --all
> >should remake them
> This did indeed work: after removing 'l3backend-pdfmode.def' (which I'd
> copied to <texlive>/2020/texmf-dist/tex/latex/backends/ manually from 2019)
> and running
> fmtutil-sys --all
> pdflatex is back in action.
>  Good to hear:-)
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