Anyone on TeX Live 2021 pretest ? (to confirm a regression for ja LilyPond)

[Pavel Sanda]

On Mon, Jun 14, 2021 at 10:19:20AM -0400, Scott Kostyshak wrote:
> > > > > > to need the flag "-dALLOWPSTRANSPARENCY" on TL21. Adding the following
> > > > > > line to my preferences file fixes some tests:
> > > > > > 
> > > > > > \converter "ps" "pdf" "ps2pdf -dALLOWPSTRANSPARENCY $$i $$o" "hyperref-driver=dvips
> > > > > 
> > > > > Huh, this would be painful if true in general.
> > > > 
> > > > Indeed it does seem annoying, but is only relevant for a few of our documents.
> > > > 
> > > > > What exact version of ghostscript do you have?
> > > > 
> > > > $ gs --version
> > > > 9.53.3
> > > 
> > > If interested, see also: https://www.lyx.org/trac/ticket/12303
> > 
> > According to https://tex.stackexchange.com/questions/597980/ghostscript-requires-dallowpstransparency-when-compiling-pstricks-figures
> > "An up-to-date TeX installation, such as TeXLive-2021, should already have the GS call configured with -dALLOWPSTRANSPARENCY"
> > Is this actually true?
> 
> I have an up-to-date TL21 installation and still get the issue. I'm not sure if the quoted statement was meant to be only about pdflatex.

Ok, we'll need to figure out whether there are security implications with dALLOWPSTRANSPARENCY and hopefully add it to defaults.
If not then we should at least parse error output to catch this particular case and issue some informed warning.

Pavel