user202729/.a-sympytex-on-overleaf.md

## .a-sympytex-on-overleaf.md

      
    Raw
  

              .a-sympytex-on-overleaf.md
            
          
    Use sympytex on overleaf

This is not officially supported, but you can made it to work...


first, see the test.tex file below (because of an annoying GitHub gist "bug", all files following a large raw file
are shown as "cannot display file this big...", thus the "a-" prefix)


download sympy.zip attached below in the gist, and upload it to your overleaf.
If you don't trust downloading random files from random sources, you can make the file yourself -- otherwise just ignore this section. This file was prepared by
# <install python2.7 somehow>
python2 -m ensurepip --upgrade --user

cd /tmp/
virtualenv  -p /bin/python2.7 zzt  # create a Python 2.7 virtual environment
cd zzt
. bin/activate
pip2 install sympy  # install sympy and mpmath
pip2 install matplotlib  # matplotlib backend for sympy for plotting

mkdir /tmp/new; cd /tmp/new  # change to some new empty directory
cp  -r /tmp/zzt/lib/python2.7/site-packages/*  .
rm -r pip setuptools pkg_resources wheel

# a weird hack to allow importing mpl_toolkits
touch mpl_toolkits/__init__.py

# minimizing the resulting file
find . -name __pycache__ -exec rm  -r {} \;
find . -name '*.pyc' -exec rm  -r {} \;
find . -name 'tests' -exec rm  -r {} \;

# then create sympy.zip in /tmp/
rm /tmp/sympy.zip
#zip -r /tmp/sympy.zip *
7z a -tzip -mx=9 /tmp/sympy.zip *  # generates smaller zip file, needed if close to 50MB limit of overleaf
(by the way Overleaf properly sandbox the environment, so even if there's malicious code it won't be able to do anything such as delete your TeX file
or leak it to the Internet)


copy the initial lines of test.tex to your file
\usepackage{shellesc}

\ShellEscape{unzip sympy.zip </dev/null  >/dev/null 2>&1}  % </dev/null, it will only attempt to unzip once then ignore in following attempts

\ShellEscape{
PYTHONPATH=$(kpsewhich -var-value TEXMFDIST)/scripts/sympytexpackage/ python2 \jobname.sympy  >tmpoutput.txt 2>&1 #$}

\usepackage{sympytex}
We need unzip instead of just add the zip file to PYTHONPATH to allow importing .so file for numpy.


add the .latexmkrc file to your project


In Overleaf, at the moment if you select "TeX Live version" to be "2022" then it will show the error message python2: command not found, which I'm not sure why. Just use version 2021 as a workaround.


then you can use sympytex as usual.
If you want to plot remember to select AGG backend (see the test file below), otherwise it will break because tkinter is not installed.


Furthermore, it cannot detect changes, so the first compilation after "Recompile from scratch" will not work...?

  
## .latexmkrc
system("unzip sympy.zip </dev/null  >/dev/null 2>&1");
# write </dev/null so it will only attempt to unzip once then ignore in following attempts

$texmfdist = `kpsewhich -var-value TEXMFDIST`;
chomp($texmfdist);  # to remove trailing newline

sub sympytexsub {
  return system("PYTHONPATH='$texmfdist'/scripts/sympytexpackage/ python2 '$_[0]'.sympy >tmpoutput.txt 2>&1");
}
add_cus_dep('sympy', 'sout', 0, 'sympytexsub');


## a-test.tex
\documentclass{article}
\usepackage{shellesc}
\usepackage{sympytex}

% for debugging purpose
\usepackage{fvextra}
\fvset{breaklines=true, breakanywhere=true}
\newcommand\verbatimInputIfExists[1]{\IfFileExists{#1}{\VerbatimInput{#1}}{}}

\AtEndDocument{%
% we force raise a message like this to make latexmk generate the .sout file
% the string "No file" is needed to make latexmk recognize it
\IfFileExists{\jobname.sout}{}{\typeout{No file \jobname.sout.}}%
}

\begin{document}

$5^4=\sympy{5**4}$

\begin{sympysilent}
from sympy import *
var("x")
import matplotlib
matplotlib.use("AGG")
\end{sympysilent}

\sympyplot[angle=30, width=5cm]{plot(sin(x), 0, pi), axes=False, chocolate=True}

Debug:
\verbatimInputIfExists{tmpoutput.txt}

\end{document}

## sympy.zip

      
    Raw
  

              sympy.zip
            
          
      This file has been truncated, but you can view the full file.
    

            View raw
	system("unzip sympy.zip </dev/null >/dev/null 2>&1");
	# write </dev/null so it will only attempt to unzip once then ignore in following attempts

	$texmfdist = `kpsewhich -var-value TEXMFDIST`;
	chomp($texmfdist); # to remove trailing newline

	sub sympytexsub {
	return system("PYTHONPATH='$texmfdist'/scripts/sympytexpackage/ python2 '$_[0]'.sympy >tmpoutput.txt 2>&1");
	}
	add_cus_dep('sympy', 'sout', 0, 'sympytexsub');
	\documentclass{article}
	\usepackage{shellesc}
	\usepackage{sympytex}

	% for debugging purpose
	\usepackage{fvextra}
	\fvset{breaklines=true, breakanywhere=true}
	\newcommand\verbatimInputIfExists[1]{\IfFileExists{#1}{\VerbatimInput{#1}}{}}

	\AtEndDocument{%
	% we force raise a message like this to make latexmk generate the .sout file
	% the string "No file" is needed to make latexmk recognize it
	\IfFileExists{\jobname.sout}{}{\typeout{No file \jobname.sout.}}%
	}

	\begin{document}

	$5^4=\sympy{5**4}$

	\begin{sympysilent}
	from sympy import *
	var("x")
	import matplotlib
	matplotlib.use("AGG")
	\end{sympysilent}

	\sympyplot[angle=30, width=5cm]{plot(sin(x), 0, pi), axes=False, chocolate=True}

	Debug:
	\verbatimInputIfExists{tmpoutput.txt}

	\end{document}