gnuradio is giving odd results with errors about missing libraries that are installed on MacOS

[ITmaze]

Output of brew config

HOMEBREW_VERSION: 4.4.4
ORIGIN: https://github.com/Homebrew/brew
HEAD: 824efa8836dc226aa92dbbf7404c1b4a66707cca
Last commit: 2 days ago
Core tap JSON: 06 Nov 05:46 UTC
Core cask tap JSON: 06 Nov 05:46 UTC
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 8
Homebrew Ruby: 3.3.5 => /opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.3.5/bin/ruby
CPU: octa-core 64-bit arm_ibiza
Clang: 16.0.0 build 1600
Git: 2.39.5 => /Library/Developer/CommandLineTools/usr/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 15.0.1-arm64
CLT: 16.0.0.0.1.1724870825
Xcode: N/A
Rosetta 2: false

Output of brew doctor

Please note that these warnings are just used to help the Homebrew maintainers
with debugging if you file an issue. If everything you use Homebrew for is
working fine: please don't worry or file an issue; just ignore this. Thanks!

Warning: Some installed casks are deprecated or disabled.
You should find replacements for the following casks:
  microsoft-remote-desktop

Description of issue

gnuradio installs as expected and launches fine. I am attempting to follow this example:

• https://wiki.gnuradio.org/index.php/Understanding_XMLRPC_Blocks#GNURadio_XMLRPC_Examples_with_ZMQ_Streaming_Data_Visualization

When I use the ZMQ PUB SINK and ZMQ SUB SOURCE blocks in the two example files and attempt to run them, I get the following output (the output is different between the two scripts, in that the filename of the script is different):

Generating: "/Users/onno/Documents/gnuradio/siggen_xmlrpc_server_streaming.py"

Executing: /opt/homebrew/Cellar/gnuradio/3.10.11.0/libexec/venv/bin/python -u /Users/onno/Documents/gnuradio/siggen_xmlrpc_server_streaming.py

log :warning: Matplotlib is a required dependency to use DistanceRadar and AzElPlot.  Please install matplotlib to use these blocks (https://matplotlib.org/)
Traceback (most recent call last):
  File "/Users/onno/Documents/gnuradio/siggen_xmlrpc_server_streaming.py", line 25, in <module>
    from gnuradio import zeromq
  File "/opt/homebrew/Cellar/gnuradio/3.10.11.0/lib/python3.12/site-packages/gnuradio/zeromq/__init__.py", line 23, in <module>
    from .probe_manager import probe_manager
  File "/opt/homebrew/Cellar/gnuradio/3.10.11.0/lib/python3.12/site-packages/gnuradio/zeromq/probe_manager.py", line 11, in <module>
    import zmq
ModuleNotFoundError: No module named 'zmq'

However, this is already installed:

% brew install zmq
==> Downloading https://formulae.brew.sh/api/formula.jws.json
######################################################################### 100.0%
==> Downloading https://formulae.brew.sh/api/cask.jws.json
######################################################################### 100.0%
Warning: zeromq 4.3.5_1 is already installed and up-to-date.
To reinstall 4.3.5_1, run:
  brew reinstall zeromq

Similarly, if I attempt to run the generated python script from the command line, I get the following error:

./siggen_controller_xmlrpc_client_streaming.py
Traceback (most recent call last):
  File "/Users/onno/Documents/gnuradio/./siggen_controller_xmlrpc_client_streaming.py", line 12, in <module>
    from PyQt5 import Qt
ModuleNotFoundError: No module named 'PyQt5'

This is also already installed:

% brew install PyQt5 
==> Downloading https://formulae.brew.sh/api/formula.jws.json
################################################################################################################################################################################ 100.0%
==> Downloading https://formulae.brew.sh/api/cask.jws.json
################################################################################################################################################################################ 100.0%
Warning: pyqt@5 5.15.10 is already installed and up-to-date.

I also had to install python-matplotlib manually, since this does not appear to have been installed by the gnuradio installer. I note that the launch error also shows that matplotlib isn't found.

I think there are at least two issues:

1. there appears to be a path bug that is preventing python from finding its libraries.
2. there appears to be a missing dependency on python-matplotlib, but even when it's manually installed, the library isn't found.

I've completely removed gnuradio with brew remove gnuradio , then used brew autoremove and removed the manually installed packages (python-matplotlib and pyqt@5), then reinstalled to confirm the above.

I've attached the installation log from my terminal.

Any assistance would be much appreciated.