The current package build installs these files:

    /usr/bin/pyCecClient
    /usr/lib
    /usr/lib/x86_64-linux-gnu
    /usr/lib/x86_64-linux-gnu/python3.13
    /usr/lib/x86_64-linux-gnu/python3.13/dist-packages
    /usr/lib/x86_64-linux-gnu/python3.13/dist-packages/cec.py

However...

    /usr/lib/x86_64-linux-gnu/python3.13/dist-packages

isn't on the standard PYTHON_PATH (use `python -m site` to show yours),
which is currently:

    $(cwd),
    '/usr/lib/python313.zip',
    '/usr/lib/python3.13',
    '/usr/lib/python3.13/lib-dynload',
    '/usr/local/lib/python3.13/dist-packages',
    '/usr/lib/python3/dist-packages',

And no other package seems to install into
/usr/lib/x86_64-linux-gnu/python3.13/dist-packages

Also, there's a missing binary which is loaded by the module. I've
cobbled together the following working but non-optimal install by
changing debian/python3-libcec.install to:

    usr/lib/*/python3.*/dist-packages/* usr/lib/python3/dist-packages/
    usr/bin/pyCecClient

which installs:

    /usr/lib/python3/dist-packages
    /usr/lib/python3/dist-packages/_pycec.so
    /usr/lib/python3/dist-packages/cec.py

However, it probably should install into
/usr/lib/python3/dist-packages/cec/ as the included script (pyCecClient)
loads the module using

    from cec import cec

Also, the libcec build script doesn't add the arch component to the
python .so component.  The current convention seems to be that it should
be named

   _pycec.cpython-313-x86_64-linux-gnu.so
   _pycec.cpython-313-aarch64-linux-gnu.so

on x86_64 and aarch64 respectively.

The install logic appears to be near the end of

   src/libcec/cmake/CheckPlatformSupport.cmake

Hi,

Our system has detected the upload of libcec 8.1.6+dfsg-1 as being a transition risk: it drops binary packages that other packages in unstable still depend on. A change like this normally needs to be coordinated with the Release Team and uploaded to experimental in the meantime.

Please let us know how to proceed by visiting the link below (you'll be asked to authenticate with Salsa first):

https://dfsg-new-queue.debian.org/transition/Tg6lNPva0FghSEEBop8oGzrHo7AytKIU

There you can either confirm the rejection (so you can re-upload to experimental) or tell us no transition is needed and ask us to review it anyway.

More about transitions: https://wiki.debian.org/Teams/ReleaseTeam/Transitions

If you have any questions, please reply to this e-mail and someone from the
team will respond.

Thanks!