Package: python3-pybind11 Followup-For: Bug #950811 I'm not certain this is a bug.
$ python3 -m pybind11 --help usage: python -m pybind11 [-h] [--includes] optional arguments: -h, --help show this help message and exit --includes Include flags for both pybind11 and Python headers. So --includes is supposed to include Python headers. As you pointed out, /usr/include (for the pybind11 headers) does not need to be added, since /usr/include is a standard path.