see: https://groups.google.com/forum/#!searchin/sage-devel/iftex%7Csort:relevance/sage-devel/_o5OX8uhpWM/Vgf21SRIBgAJ
install texlive-generic-extra François > On 7/07/2017, at 00:26, Eric Gourgoulhon <egourgoul...@gmail.com> wrote: > > On Ubuntu 16.04 with the default texlive install, the pdf documentation fails > to build: > ./sage -docbuild reference/algebras pdf > results in > > (/usr/share/texlive/texmf-dist/tex/latex/jknapltx/mathrsfs.sty) > > ! LaTeX Error: File `iftex.sty' not found. > > On the same machine, the pdf build is OK for Sage 7.6. I could trace the > issue back to 8.0.beta9. > > This seems to be due to a change in Sphinx: > https://github.com/sphinx-doc/sphinx/issues/2639 > Installing the Ubuntu package texlive-generic-extra fixes it. > > Eric. > > > > > -- > You received this message because you are subscribed to the Google Groups > "sage-release" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sage-release+unsubscr...@googlegroups.com. > To post to this group, send email to sage-release@googlegroups.com. > Visit this group at https://groups.google.com/group/sage-release. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sage-release" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-release+unsubscr...@googlegroups.com. To post to this group, send email to sage-release@googlegroups.com. Visit this group at https://groups.google.com/group/sage-release. For more options, visit https://groups.google.com/d/optout.
