pdflatex build error: Mismatched LaTeX support files detected

[Rich Shepard]

On Mon, 19 Jun 2023, Paul A. Rubin wrote:

> I think the stuff about UTF-8 right above the error message has nothing to
> do with the error. The error just got discovered after that log line.

Paul,

Makes sense to me.

> Taking the error message at face value, it looks like you somehow ended up
> with a very recent (June 2023) version of TeXLive with a not quite so
> recent (May '23) version of one of the files (expl3.sty). So maybe an
> installation or update of TeXLive got bollixed up? At any rate, it's
> unrelated to LyX. Somebody reported this
> <https://tex.stackexchange.com/questions/662487/expl3-sty-date-mismatch-after-tl-update>
> with an earlier version of TeXLive and posted what looks like a fix.

Yes, I did a tl update earlier this month. Just did another one (34 updates
packages.) Perhaps I need to make this a weekly cron task for root.

Thanks for the URL. Reading that thread I just ran `fmtutil-sys --all' and
now have a different issue:
##############################################################################
fmtutil: Error! Not all formats have been built successfully.
Visit the log files in directory
   /usr/share/texmf-var/web2c
for details.
###############################################################################

This is a summary of all `failed' messages and warnings:
`pdfetex -ini  -jobname=amstex -progname=amstex -translate-file=cp227.tcx *amstex.ini' failed
`pdfetex -ini  -jobname=bamstex -progname=bamstex -translate-file=cp227.tcx bamstex.ini' failed

There are 14 .log files in web2c. Guess that's where my afternoon will be
spent.

Thanks,

Rich