On 5/17/22 08:38, tush via lyx-users wrote:
I got two tex installations on my computer running Windows.
One is TeX live 2021, the other is miktex.
Is there any way to tell lyx which one to use?
Or is it rather determined by the computer via the control panel PATH
(in the Environmental Variables menu)?
I haven't seen any menu in LyX that lets the user to choose such a
thing, so I tend to think that you can only make such decisions from
the system's control panel. But I would like to be sure about it.
I'm not sure this will work, so consider it an experiment. Not knowing
what you preferred method is for generating output, I'll focus on pdflatex.
I recommend starting LyX from a command prompt with the option "-dbg
latex" so that you can see which TeX distribution is being used. In
Tools > Preferences... > File Handling > Converters, select "LaTeX
(pdflatex) -> PDF (pdflatex)" in the Converter Definitions box and
change the entry in "Converter" to include the path to the pdflatex
executable in whichever TeX distro you want to use. You might want to
select "Apply to current session only" for testing (and then go back,
remove that check box and save the change again if it works). Test by
compiling a document.
If this works, you can make comparable changes to other converters
("LaTeX (plain) -> DVI", etc.). If you want to have the option to choose
between TeX distros at will, I think you will need to create new file
formats and converters, so that for instance viewing/exporting your
document as "PDF (pdflatex)" uses MiKTeX whereas viewing/exporting as
"PDF (pdflatex) 2" uses TeXLive.
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