Unable to launch muse-lsl on Mac Ventura

[Tguyfr]

Hi there,
I apologize in advance for my very dumb question, but I'm not familiar with Python. I installed a few librairies in the past and can run scripts from the Terminal, but that's it. I've been able to install muse-lsl with pip3, but not to launch it. It's in my /User/Python/3.7/lib/python/site-packages/ directory, so what ? I don't understand what to do next. I tried a bunch of things with no results. Help...

[jdpigeon]

Interesting. Installing and running should be as easy as:

pip install muselsl
muselsl stream 

Are you seeing any error messages in the terminal when trying to run muselsl?

[Tguyfr]

I reinstalled muselsl to be sure and get this answer :
`Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pylsl/pylsl.py", line 1287, in
libpath = next(find_liblsl_libraries())
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
StopIteration

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.11/bin/muselsl", line 5, in
from muselsl.main import main
File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/muselsl/init.py", line 1, in
from .stream import stream, list_muses
File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/muselsl/stream.py", line 8, in
from pylsl import StreamInfo, StreamOutlet
File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pylsl/init.py", line 2, in
from .pylsl import IRREGULAR_RATE, DEDUCED_TIMESTAMP, FOREVER, cf_float32,
File "/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pylsl/pylsl.py", line 1296, in
raise RuntimeError(err_msg + __dload_msg)
RuntimeError: LSL binary library file was not found. Please make sure that the binary file can be found in the package lib folder
(/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/pylsl/lib)
or the system search path. Alternatively, specify the PYLSL_LIB environment variable.
You can install the LSL library with conda: conda install -c conda-forge liblsl
or with homebrew: brew install labstreaminglayer/tap/lsl
or otherwise download it from the liblsl releases page assets: https://github.com/sccn/liblsl/releases
On modern MacOS (>= 10.15) it is further necessary to set the DYLD_LIBRARY_PATH environment variable. e.g. `>DYLD_LIBRARY_PATH=/opt/homebrew/lib python path/to/my_lsl_script.py``

I reinstalled LSL via homebrew, but I don't understand how to set the PATH.

[Tguyfr]

Sorry, I don't even know ho to properly quote some code on Github :/