Issues installing on platform running Python3 ( Text with Latex [GTK3] )

[Zipgit]

Attempting to solve some problems with installing on Linux x86_64 debian (Mint).

1. instructions don't seem to indicate that the package should be unzipped into the ~/.config/inkscape/extensions directory (eventually figured this out, and solved it)
2. the Extension, as delivered, is **not set up to run with Python3** (which is current, and so it seems that this Extension is not up to date)
3. Solved some installation problems by editing the install.sh file, changing "python" to "python3"
4. Multiple errors generated when calling the Extension within Inkscape; here are some generated from the latextext.py program:

/home/username/.config/inkscape/extensions/LaTeXText-master/extension/latextext.py:472: SyntaxWarning: "is not" with a literal. Did you mean "!="?
  if self.options.math and latex_string[0] is not '$':

/home/username/.config/inkscape/extensions/LaTeXText-master/extension/latextext.py:639: DeprecationWarning: Effect.OptionParser or `optparse` has been deprecated and replaced with `argparser`. You must change `self.OptionParser.add_option` to `self.arg_parser.add_argument`; the arguments are similar.


  add_options(self.OptionParser)
/home/username/.config/inkscape/extensions/LaTeXText-master/extension/latextext.py:640: DeprecationWarning: Effect.OptionParser or `optparse` has been deprecated and replaced with `argparser`. You must change `self.OptionParser.add_option` to `self.arg_parser.add_argument`; the arguments are similar.

  self.OptionParser.set_conflict_handler("resolve")
Traceback (most recent call last):
  File "/home/username/.config/inkscape/extensions/LaTeXText-master/extension/latextext_gtk3.py", line 176, in <module>
    effect = RenderLatexEffectGTK3()
  File "/home/username/.config/inkscape/extensions/LaTeXText-master/extension/latextext.py", line 640, in __init__
    self.OptionParser.set_conflict_handler("resolve")
AttributeError: 'RenderLatexEffectGTK3' object has no attribute 'set_conflict_handler'

I was able to fix some of these errors, but other persist (due to my poor python3 skills, I guess)

[mathieulandreau]

Hi,
I faced exactly the same issues. It seem that the optparse library is not used anymore and replaced by argparse
optparse : https://docs.python.org/3/library/optparse.html
argparse : https://docs.python.org/3/library/argparse.html

Fortunately the two libraries are almost similar. I modified the source code for argparse use and succeeded in using the LaTexText only on terminal.
I couldn't use directly in Inkscape Extensions because when you check (or not) a click box in the dialog box, it output a value of true instead of True. I don't know how to manage that. I also had problems with the input file.

However, now I face another issue with the translation method :
Traceback (most recent call last):
File "/home/mlandreau/.config/inkscape/extensions/./latextext.py", line 771, in
main_standalone()
File "/home/mlandreau/.config/inkscape/extensions/./latextext.py", line 753, in main_standalone
result = svgprocessor.run()
File "/home/mlandreau/.config/inkscape/extensions/./latextext.py", line 478, in run
rendergroup = self.align_placement(rendergroup, txt)
File "/home/mlandreau/.config/inkscape/extensions/./latextext.py", line 347, in align_placement
(tx, ty) = t.get_translation()
File "/home/mlandreau/.config/inkscape/extensions/./latextext.py", line 197, in get_translation
return (self.matrix[0][2], self.matrix[1][2])
IndexError: list index out of range