Comment 6 for bug 2046263

And now the build falls apart on launchpad (but not in sbuild) - \o/ [0]
The same build worked last week in [1].

AFAICS this is breaking here:

Good:
checking if we can build man... yes

Bad:
checking if we can build man... <unknown>:1: SyntaxWarning: invalid escape sequence '\S'
...
configure: error: Unable to build pdf documentation

This repeats for "checking if asciidoc version can build html-single" and "checking if a2x version can build html-chunked"

Not sure how much is a red herring, but earlier I see:
  Setting up dblatex (0.3.12py3-2) ...
In good and bad case.

But in the bad case
/usr/lib/python3/dist-packages/dbtexmf/dblatex/grubber/texparser.py:34: SyntaxWarning: invalid escape sequence '\*'

And that is pure python independent to nut and I see
Good case: 3.11.4-5
Bad case: 3.12.1-0ubuntu1

Even sbuild against proposed pulls 3.11.7-2 right now, which is why my sbuild repro does not show this.
Reaching out on ubuntu-devel if that is known and more wide reaching ...

[0]: https://launchpad.net/ubuntu/+source/nut/2.8.1-3ubuntu1/+build/27668595
[1]: https://launchpad.net/~paelzer/+archive/ubuntu/nut-test-timeouts-noble/+build/27631569