Unable to install ffsubsync on Windows due to error in building faust-cchardet

[Mindstormer619]

Environment (please complete the following information):

• OS: Windows 10
• python version (python --version) Python 3.13.5
• subsync version (subsync --version) N/A

Describe the bug

Unable to install ffsubsync on Windows. It fails while building faust-cchardet.

To Reproduce
uv pip install ffsubsync

Expected behavior

ffsubsync installs without error.

Output

Resolved 19 packages in 4.26s
      Built auditok==0.1.5
      Built srt==3.5.3
  × Failed to build `faust-cchardet==2.1.19`
  ├─▶ The build backend returned an error
  ╰─▶ Call to `setuptools.build_meta.build_wheel` failed (exit code: 1)

      [stdout]
      running bdist_wheel
      running build
      running build_py
      creating build\lib.win-amd64-cpython-313\cchardet
      copying src\cchardet\version.py -> build\lib.win-amd64-cpython-313\cchardet
      copying src\cchardet\__init__.py -> build\lib.win-amd64-cpython-313\cchardet
      running build_ext
      building 'cchardet._cchardet' extension

      [stderr]
      C:\Users\minds\AppData\Local\uv\cache\builds-v0\.tmp7lDVHU\Lib\site-packages\setuptools\dist.py:759:
      SetuptoolsDeprecationWarning: License classifiers are deprecated.
      !!

              ********************************************************************************
              Please consider removing the following classifiers in favor of a SPDX license
      expression:

              License :: OSI Approved :: Mozilla Public License 1.1 (MPL 1.1)
              License :: OSI Approved :: GNU General Public License (GPL)
              License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)

              See https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license
      for details.
              ********************************************************************************

      !!
        self._finalize_license_expression()
      error: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build
      Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/

      hint: This usually indicates a problem with the package or the build environment.
  help: `faust-cchardet` (v2.1.19) was included because `ffsubsync` (v0.4.29) depends on
        `faust-cchardet`

Additional context

I'm currently using uv pip to install it, though I don't think this should create any problems.

[pjoc]

I had the same issue on Linux. Basically you need to have a C++ compiler installed (the error message indicates this). It's a documentation bug. On Linux I installed gcc-c++ and it worked.

[smacke]

Looking at the files bundled by faust-cchardet, it seems that it hasn't yet released pre-built wheels for CPython 3.13: https://pypi.org/project/faust-cchardet/#files

(ctrl+f and search for "cp313" and you'll see that there are no matches, unlike for "cp312" and below)

I'll open an issue on that repo when I have a minute, but until then, to mitigate, you can try to install ffsubsync on CPython 3.12 or below.

EDIT: On my side, I went ahead and pushed a new version of ffsubsync that removes the faust-cchardet dependency on Python >= 3.13, which should help with these installation issues folks are experiencing. The downside is that ffsubsync won't be able to infer some of the more exotic file encodings found in some older subtitle files, but this generally won't be an issue for most cases (particularly for newer movies / shows, for which subtitles have generally standardized around utf-8).