Hi,
First of all, thanks a lot for taking care of the libtmux Python library!
The pybuild plugin in all libtmux versions before 0.58.1 cannot be
imported with pytest 9.1. This breaks the autopkgtest of python3-libtmux,
and it also breaks the test suite of any other packages that try to import
the libtmux pybuild plugin, such as hexer or tina.
Attached is a trivial patch taken from an upstream commit; of course,
upgrading to the 0.58.1 upstream release would also fix this.
Thanks again, and keep up the great work!
G'luck,
Peter