python3-pyzmq not found, No module named 'sphinx'

[DL7NDR]

On Ubuntu 22.04:

sudo apt install python3-pyzmq
-> packet not found

python3 setup.py install
-> ModuleNotFoundError: No module named 'sphinx'

python3 setup.py build_sphinx
-> ModuleNotFoundError: No module named 'sphinx'

[DL7NDR]

I've adapted to your changes.

I then could successfully run sudo python3 setup.py install.

However, spacelab-decoder says:
A module that was compiled using NumPy 1.x cannot be run in
NumPy 2.2.6 as it may crash. To support both 1.x and 2.x
versions of NumPy, modules must be compiled with NumPy 2.0.
Some module may need to rebuild instead e.g. with 'pybind11>=2.12'.

sudo python3 setup.py install keeps on saying:
Using /usr/local/lib/python3.10/dist-packages/pyngham-1.1.1-py3.10.egg
Searching for numpy==1.21.5
Best match: numpy 1.21.5
Adding numpy 1.21.5 to easy-install.pth file

pip install numpy --upgrade --ignore-installed says:
Successfully installed numpy-2.2.6

[DL7NDR]

I did pip install numpy==1.26.4, however sudo python3 setup.py install keeps on saying:
Using /usr/local/lib/python3.10/dist-packages/pyngham-1.1.1-py3.10.egg
Searching for numpy==1.21.5
Best match: numpy 1.21.5
Adding numpy 1.21.5 to easy-install.pth file

Although:
python3 -c "import numpy; print(numpy.version.version)"
1.26.4

Running spacelab-decoder, the error message is now:
Traceback (most recent call last):
File "/usr/local/bin/spacelab-decoder", line 33, in
sys.exit(load_entry_point('spacelab-decoder==0.6.0', 'gui_scripts', 'spacelab-decoder')())
TypeError: main() missing 1 required positional argument: 'args'