>>> import hpsdr
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3.8/site-packages/gnuradio/hpsdr/__init__.py", line 18, in <module>
from .hpsdr_python import *
ImportError: generic_type: type "hermesNB" referenced unknown base type "gr::block"
>>>
The only way I found to solve this problem was to stop using Ubuntu 20.04 Focal and move to Ubuntu 22.04 Jammy.
22.04 seems to have the latest versions of the key tools, it all built, and runs correctly.
I suspect this just affects pybind11, if so folks probably would still be able to install the OOT
on the older version of Ubuntu, they just couldn't change anything that would require re-binding.
-- Tom, N5EG