[gentoo-user] Problems with LyX and xetex-2021

[Stefano Crocco <posta@stefanocrocco.it>]

[-- Attachment #1: Type: text/plain, Size: 2027 bytes --]

Hello to everyone,
since upgrading my ~arch system to TeXLive-2021 I'm having problems using 
XeLaTeX to compile LyX documents. Has someone else experienced this issue? I'd 
like to file a bug report about it, but before doing so I'd like to be sure 
that there isn't something wrong with my system.

Below you'll find the details of my problem.

Thanks in advance

Stefano

DETAILS

When I use LyX to create a PDF using XeLaTeX from the attached test.lyx file 
(using the default LaTeX (XeTeX) -> PDF (XeTeX) converter), I get an error 
dialog with the following text:

The external program
xelatex 
finished with an error. It is recommended you fix the cause of the external 
program's error (check the logs). 

As far as I can see, the log (attached as log_from_lyx) don't mention any 
error, except for the generic (at least to my eyes) line
"Error 256 (driver return code) generating output;"
near the end.

Trying to obtain a better error message, I exported the LyX file as a XeLaTeX 
file using the File/Export LaTeX (xetex) menu entry and run xelatex on it. Of 
course, it failed, but this time the log (in the log_from_xelatex attachment) 
contains a more meaningful message:
"xdvipdfmx:fatal: Cannot proceed without .vf or "physical" font for PDF 
output..."

Unfortunately, I'm not expert enough in the inner works of (xe)latex to 
understand this message. I tried searching google for it but didn't find 
anything useful. However, looking at the tex file generated by LyX (the 
test.tex attachment), I noticed the line 

\usepackage[T1]{fontenc}

which seemed strange to me, as I thought that the fontenc package shouldn't be 
used with XeLaTeX. Indeed, after commenting this line, xelatex successfully 
created the correct PDF.

This problem has almost certainly been caused by switching texlive and the 
related packages from 2020 to 2021, since on another computer where I masked 
the 2021 version of app-text/texlive-core, app-text/texlive and all packages 
in category dev-texlive, everything works correctly.

[-- Attachment #2: test.lyx --]
[-- Type: application/x-lyx, Size: 1913 bytes --]

[-- Attachment #3: test.tex --]
[-- Type: text/x-tex, Size: 392 bytes --]

%% LyX 2.3.6.1 created this file.  For more info, see http://www.lyx.org/.
%% Do not edit unless you really know what you are doing.
\documentclass[twoside,italian]{article}
\usepackage[T1]{fontenc}
\usepackage[a4paper]{geometry}
\geometry{verbose,tmargin=2cm,bmargin=2cm,lmargin=2cm,rmargin=2cm}
\usepackage{setspace}
\setstretch{1.3}
\usepackage{babel}
\begin{document}
TEST
\end{document}

[-- Attachment #4: log_from_lyx --]
[-- Type: text/plain, Size: 5975 bytes --]

This is XeTeX, Version 3.141592653-2.6-0.999993 (TeX Live 2021 Gentoo Linux) (preloaded format=xelatex 2021.5.8)  16 MAY 2021 19:29
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
**test.tex
(./test.tex
LaTeX2e <2020-10-01> patch level 4
L3 programming layer <2021-02-18>
(/usr/share/texmf-dist/tex/latex/base/article.cls
Document Class: article 2020/04/10 v1.4m Standard LaTeX document class
(/usr/share/texmf-dist/tex/latex/base/size10.clo
File: size10.clo 2020/04/10 v1.4m Standard LaTeX file (size option)
)
\c@part=\count175
\c@section=\count176
\c@subsection=\count177
\c@subsubsection=\count178
\c@paragraph=\count179
\c@subparagraph=\count180
\c@figure=\count181
\c@table=\count182
\abovecaptionskip=\skip47
\belowcaptionskip=\skip48
\bibindent=\dimen138
) (/usr/share/texmf-dist/tex/latex/base/fontenc.sty
Package: fontenc 2020/08/10 v2.0s Standard LaTeX package
LaTeX Font Info:    Trying to load font information for T1+lmr on input line 11
2.
(/usr/share/texmf-dist/tex/latex/lm/t1lmr.fd
File: t1lmr.fd 2009/10/30 v1.6 Font defs for Latin Modern
)) (/usr/share/texmf-dist/tex/latex/geometry/geometry.sty
Package: geometry 2020/01/02 v5.9 Page Geometry
(/usr/share/texmf-dist/tex/latex/graphics/keyval.sty
Package: keyval 2014/10/28 v1.15 key=value parser (DPC)
\KV@toks@=\toks15
) (/usr/share/texmf-dist/tex/generic/iftex/ifvtex.sty
Package: ifvtex 2019/10/25 v1.7 ifvtex legacy package. Use iftex instead.
(/usr/share/texmf-dist/tex/generic/iftex/iftex.sty
Package: iftex 2020/03/06 v1.0d TeX engine tests
))
\Gm@cnth=\count183
\Gm@cntv=\count184
\c@Gm@tempcnt=\count185
\Gm@bindingoffset=\dimen139
\Gm@wd@mp=\dimen140
\Gm@odd@mp=\dimen141
\Gm@even@mp=\dimen142
\Gm@layoutwidth=\dimen143
\Gm@layoutheight=\dimen144
\Gm@layouthoffset=\dimen145
\Gm@layoutvoffset=\dimen146
\Gm@dimlist=\toks16
) (/usr/share/texmf-dist/tex/latex/setspace/setspace.sty
Package: setspace 2011/12/19 v6.7a set line spacing
) (/usr/share/texmf-dist/tex/generic/babel/babel.sty
Package: babel 2021/03/03 3.55 The Babel package
(/usr/share/texmf-dist/tex/generic/babel/babel.def
File: babel.def 2021/03/03 3.55 Babel common definitions
\babel@savecnt=\count186
\U@D=\dimen147
\l@babelnohyphens=\language10
(/usr/share/texmf-dist/tex/generic/babel/xebabel.def (/usr/share/texmf-dist/tex
/generic/babel/txtbabel.def))
\bbl@readstream=\read2
)
\bbl@dirlevel=\count187
(/usr/share/texmf-dist/tex/generic/babel-italian/italian.ldf
Language: italian 2020/05/21 v.1.4.04 Italian support for the babel system
\it@lettering=\count188
\it@doublequoteactive=\count189
\it@ISOcompliance=\count190
)) (/usr/share/texmf-dist/tex/latex/etoolbox/etoolbox.sty
Package: etoolbox 2020/10/05 v2.5k e-TeX tools for LaTeX (JAW)
\etb@tempcnta=\count191
) (/usr/share/texmf-dist/tex/latex/l3backend/l3backend-xetex.def
File: l3backend-xetex.def 2021-03-18 L3 backend support: XeTeX
(|extractbb --version)
\c__kernel_sys_dvipdfmx_version_int=\count192
\l__color_backend_stack_int=\count193
\g__color_backend_stack_int=\count194
\g__graphics_track_int=\count195
\l__pdf_internal_box=\box47
\g__pdf_backend_object_int=\count196
\g__pdf_backend_annotation_int=\count197
\g__pdf_backend_link_int=\count198
)
No file test.aux.
\openout1 = `test.aux'.

LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 12.
LaTeX Font Info:    ... okay on input line 12.
LaTeX Font Info:    Checking defaults for OMS/cmsy/m/n on input line 12.
LaTeX Font Info:    ... okay on input line 12.
LaTeX Font Info:    Checking defaults for OT1/cmr/m/n on input line 12.
LaTeX Font Info:    ... okay on input line 12.
LaTeX Font Info:    Checking defaults for T1/cmr/m/n on input line 12.
LaTeX Font Info:    ... okay on input line 12.
LaTeX Font Info:    Checking defaults for TS1/cmr/m/n on input line 12.
LaTeX Font Info:    Trying to load font information for TS1+cmr on input line 1
2.
(/usr/share/texmf-dist/tex/latex/base/ts1cmr.fd
File: ts1cmr.fd 2019/12/16 v2.5j Standard LaTeX font definitions
)
LaTeX Font Info:    ... okay on input line 12.
LaTeX Font Info:    Checking defaults for TU/lmr/m/n on input line 12.
LaTeX Font Info:    ... okay on input line 12.
LaTeX Font Info:    Checking defaults for OMX/cmex/m/n on input line 12.
LaTeX Font Info:    ... okay on input line 12.
LaTeX Font Info:    Checking defaults for U/cmr/m/n on input line 12.
LaTeX Font Info:    ... okay on input line 12.
*geometry* driver: auto-detecting
*geometry* detected driver: xetex

Package geometry Warning: The marginal notes overrun the paper.
     Add 75.0945pt and more to the right margin.

*geometry* verbose mode - [ preamble ] result:
* driver: xetex
* paper: a4paper
* layout: <same size as paper>
* layoutoffset:(h,v)=(0.0pt,0.0pt)
* modes: twoside 
* h-part:(L,W,R)=(56.9055pt, 483.69687pt, 56.9055pt)
* v-part:(T,H,B)=(56.9055pt, 731.23584pt, 56.9055pt)
* \paperwidth=597.50787pt
* \paperheight=845.04684pt
* \textwidth=483.69687pt
* \textheight=731.23584pt
* \oddsidemargin=-15.36449pt
* \evensidemargin=-15.36449pt
* \topmargin=-52.36449pt
* \headheight=12.0pt
* \headsep=25.0pt
* \topskip=10.0pt
* \footskip=30.0pt
* \marginparwidth=121.0pt
* \marginparsep=11.0pt
* \columnsep=10.0pt
* \skip\footins=9.0pt plus 4.0pt minus 2.0pt
* \hoffset=0.0pt
* \voffset=0.0pt
* \mag=1000
* \@twocolumnfalse
* \@twosidetrue
* \@mparswitchtrue
* \@reversemarginfalse
* (1in=72.27pt=25.4mm, 1cm=28.453pt)

LaTeX Info: Redefining \it@ocap on input line 12.
LaTeX Info: Redefining \it@ccap on input line 12.
[1

] (./test.aux) ) 
Here is how much of TeX's memory you used:
 2404 strings out of 478834
 34474 string characters out of 5864768
 348542 words of memory out of 5000000
 22320 multiletter control sequences out of 15000+600000
 406428 words of font info for 29 fonts, out of 8000000 for 9000
 36 hyphenation exceptions out of 8191
 68i,4n,74p,239b,129s stack positions out of 5000i,500n,10000p,200000b,80000s

Error 256 (driver return code) generating output;
file test.pdf may not be valid.

[-- Attachment #5: log_from_xelatex --]
[-- Type: text/plain, Size: 2499 bytes --]

This is XeTeX, Version 3.141592653-2.6-0.999993 (TeX Live 2021 Gentoo Linux) (preloaded format=xelatex)
 restricted \write18 enabled.
entering extended mode
(./test.tex
LaTeX2e <2020-10-01> patch level 4
L3 programming layer <2021-02-18>
(/usr/share/texmf-dist/tex/latex/base/article.cls
Document Class: article 2020/04/10 v1.4m Standard LaTeX document class
(/usr/share/texmf-dist/tex/latex/base/size10.clo))
(/usr/share/texmf-dist/tex/latex/base/fontenc.sty
(/usr/share/texmf-dist/tex/latex/lm/t1lmr.fd))
(/usr/share/texmf-dist/tex/latex/geometry/geometry.sty
(/usr/share/texmf-dist/tex/latex/graphics/keyval.sty)
(/usr/share/texmf-dist/tex/generic/iftex/ifvtex.sty
(/usr/share/texmf-dist/tex/generic/iftex/iftex.sty)))
(/usr/share/texmf-dist/tex/latex/setspace/setspace.sty)
(/usr/share/texmf-dist/tex/generic/babel/babel.sty
(/usr/share/texmf-dist/tex/generic/babel/babel.def
(/usr/share/texmf-dist/tex/generic/babel/xebabel.def
(/usr/share/texmf-dist/tex/generic/babel/txtbabel.def)))
(/usr/share/texmf-dist/tex/generic/babel-italian/italian.ldf))
(/usr/share/texmf-dist/tex/latex/etoolbox/etoolbox.sty)
(/usr/share/texmf-dist/tex/latex/l3backend/l3backend-xetex.def
(|extractbb --version))
No file test.aux.
(/usr/share/texmf-dist/tex/latex/base/ts1cmr.fd)
*geometry* driver: auto-detecting
*geometry* detected driver: xetex

Package geometry Warning: The marginal notes overrun the paper.
     Add 75.0945pt and more to the right margin.

*geometry* verbose mode - [ preamble ] result:
* driver: xetex
* paper: a4paper
* layout: <same size as paper>
* layoutoffset:(h,v)=(0.0pt,0.0pt)
* modes: twoside 
* h-part:(L,W,R)=(56.9055pt, 483.69687pt, 56.9055pt)
* v-part:(T,H,B)=(56.9055pt, 731.23584pt, 56.9055pt)
* \paperwidth=597.50787pt
* \paperheight=845.04684pt
* \textwidth=483.69687pt
* \textheight=731.23584pt
* \oddsidemargin=-15.36449pt
* \evensidemargin=-15.36449pt
* \topmargin=-52.36449pt
* \headheight=12.0pt
* \headsep=25.0pt
* \topskip=10.0pt
* \footskip=30.0pt
* \marginparwidth=121.0pt
* \marginparsep=11.0pt
* \columnsep=10.0pt
* \skip\footins=9.0pt plus 4.0pt minus 2.0pt
* \hoffset=0.0pt
* \voffset=0.0pt
* \mag=1000
* \@twocolumnfalse
* \@twosidetrue
* \@mparswitchtrue
* \@reversemarginfalse
* (1in=72.27pt=25.4mm, 1cm=28.453pt)

[1] (./test.aux)
xdvipdfmx:fatal: Cannot proceed without .vf or "physical" font for PDF output...

No output PDF file written.
 )
Error 256 (driver return code) generating output;
file test.pdf may not be valid.
Transcript written on test.log.