Julien Palard <julien+python@palard.fr> added the comment: Due to issue 32200, we switched on xelatex, it however did **not** fixed the french builds as expected, maybe because we're using an old version of xelatex. The issue: ! Improper discretionary list. <recently read> } l.359 ...{PyObject} \PYG{o}{*}\PYG{n}{t}\PYG{p}{;} ? ! Emergency stop. The version of texlive-xetex on the build server: 2013.20140215-1ubuntu0.1 The version I tried: 2017.20171128-1 I'm not having the 2013 version on Debian. I'm trying now with 2014.20141024-2+deb8u1, and I'm trying to understand the error message too. ---------- _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue31589> _______________________________________