With PYTHONHOME stripped, SadTalker's 3.10 got as far as importing torch and
died there:

    ImportError: /opt/coderai/local-libs/libtorch_python.so:
    undefined symbol: PyObject_GetOptionalAttrString

a CPython 3.13 API. The container launcher exports LD_LIBRARY_PATH as
/opt/coderai/python/lib:/opt/coderai/local-libs:<the server venv's nvidia
wheels>, so a child on another python loads THIS one's extension modules --
the same bug as PYTHONHOME, one layer down, and it hides the same way: by hand
in the same container the import works, because an interactive shell has none
of it.

Filtered rather than dropped. An isolated venv ships its own torch and CUDA
wheels, but a system CUDA or anything the operator put on that path is theirs
to keep -- and an empty LD_LIBRARY_PATH is not an unset one, it means the
current directory.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014T3rZnLhydX9QqUcfBbqLu