Fix japanese doc build error

[take6]

Changes aims to fix the problem on building Japanese PDF doc reported the following issue.

python/python-docs-ja#35

I've confirmed the the error disappeared in the build of Python 3.11 documentation on Docker container based on Ubuntu 22.04.

Please note that this fix is a workaround to avoid confronting error rather than the one to fix essential problem. Given that the U+C4CF is Korean character, I added an option to use Korean latex package. It is weird that Korean latex package is required to build Japanese documentation. But it appears that it somehow works.

Any suggestions are welcome. Thanks in advance!

[JulienPalard]

Let's try this, thanks for working on it.

[take6]

Hi @JulienPalard,

Did it work? If not, I think it's better to revert the change.

[JulienPalard]

Damned, it did not worked, I see this in the logs:

ERROR:2023-01-19 03:20:22,652:Run: "make -C /srv/docsbuild/cpython/Doc PYTHON=/srv/docsbuild/venv-3.10/bin/python SPHINXBUILD=/srv/docsbuild/venv-3.10/bin/sphinx-build BLURB=/srv/docsbuild/venv-3.10/bin/blurb VENVDIR=/srv/docsbuild/venv-3.10 'SPHINXOPTS=-D latex_engine=platex -D latex_elements.inputenc= -D latex_elements.fontenc= -D latex_elements.preamble=\\\\usepackage{kotex} -q -D locale_dirs=/srv/docsbuild/3.10/locale -D language=ja -D gettext_compact=0' SPHINXERRORHANDLING= autobuild-stable" KO:
    Output written on howto-sockets.dvi (6 pages, 23272 bytes).
    Transcript written on howto-sockets.log.
    Latexmk: Index file 'howto-sockets.idx' was written
    Latexmk: References changed.
    Collected error summary (may duplicate other messages):
      latex: Command for 'latex' gave return code 1
          Refer to 'howto-sockets.log' for details
    Latexmk: Use the -f option to force complete processing,
     unless error was exceeding maximum runs, or warnings treated as errors.
    === TeX engine is 'e-pTeX'
    Latexmk: Errors, so I did not complete making targets
    make[3]: *** [Makefile:30: howto-sockets.pdf] Error 12
    make[3]: Leaving directory '/srv/docsbuild/cpython/Doc/build/latex'
    make[2]: *** [Makefile:180: dist] Error 2
    make[2]: Leaving directory '/srv/docsbuild/cpython/Doc'
    make[1]: *** [Makefile:227: autobuild-dev] Error 2
    make[1]: Leaving directory '/srv/docsbuild/cpython/Doc'
    make: *** [Makefile:237: autobuild-stable] Error 2
    make: Leaving directory '/srv/docsbuild/cpython/Doc'

ERROR:2023-01-19 03:20:22,737:Exception while building ja version 3.10
Traceback (most recent call last):
  File "/srv/docsbuild/scripts/build_docs.py", line 675, in run
    self.build()
  File "/srv/docsbuild/scripts/build_docs.py", line 758, in build
    run(
  File "/srv/docsbuild/scripts/build_docs.py", line 297, in run
    result.check_returncode()
  File "/usr/lib/python3.10/subprocess.py", line 456, in check_returncode
    raise CalledProcessError(self.returncode, self.args, self.stdout,
subprocess.CalledProcessError: Command '['make', '-C', '/srv/docsbuild/cpython/Doc', 'PYTHON=/srv/docsbuild/venv-3.10/bin/python', 'SPHINXBUILD=/srv/docsbuild/venv-3.10/bin/sphinx-build', 'BLURB=/srv/docsbuild/venv-3.10/bin/blurb', 'VENVDIR=/srv/docsbuild/venv-3.10', 'SPHINXOPTS=-D latex_engine=platex -D latex_elements.inputenc= -D latex_elements.fontenc= -D latex_elements.preamble=\\\\usepackage{kotex} -q -D locale_dirs=/srv/docsbuild/3.10/locale -D language=ja -D gettext_compact=0', 'SPHINXERRORHANDLING=', 'autobuild-stable']' returned non-zero exit status 2.

[take6]

OK. @JulienPalard, thank you for the reverting the change.