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.