Should the ganymede kernel be installed into /usr/local/share/jupyter/kernels/?

[dclong]

It's installed into /usr/share/jupyter/kernels/ by default on Linux. It seems to me that most other Jupyter/Lab kernels are installed to /usr/local/share/jupyter/kernels/.

[allen-ball]

Can you tell me some more about you set-up? Is /usr/local/share your sys-prefix?

The Ganymede kernel install supports the --sys-prefix and --user (default) options and on macOS / Home Brew the respective install targets are:

$ $(/usr/libexec/java_home -v 11)/bin/java -jar ganymede-2.1.1.20221231.jar -i --sys-prefix
[InstallKernelSpec] Installed kernelspec ganymede-2.1.1-java-11 in /usr/local/opt/[email protected]/Frameworks/Python.framework/Versions/3.9/share/jupyter/kernels/ganymede-2.1.1-java-11
$ $(/usr/libexec/java_home -v 11)/bin/java -jar ganymede-2.1.1.20221231.jar -i --user
[InstallKernelSpec] Installed kernelspec ganymede-2.1.1-java-11 in /Users/ball/Library/Jupyter/kernels/ganymede-2.1.1-java-11

[dclong]

How do I check my sys-prefix? I'm using JupyterLab, and the command jupyter kernelspec list shows that all kernels are installed into /usr/local/share/ instead of /usr/share/.

[allen-ball]

The actual test to get the path the Ganymede installer is using is python -c 'import sys; print(sys.prefix)'. (I can see that this likely needs to be "python3" for Ubuntu...)

BTW, there are still some issues running with the jupyter lab but the jupyter notebook interface should work fine.

So, a few more questions:

• Which Linux distro?
• Which version of Python?
• How did you install jupyter (pip, conda, ...)?

Thanks again.

[allen-ball]

FYI, I am going to change the algorithm to find the python executable: Instead of searching for it on the $PATH I am going to examine the first line of the jupyter executable.

[dclong]

python -c 'import sys; print(sys.prefix)' returns /usr on my system. Below are more info about my environment.
OS: Ubuntu LTS (in Docker)
Python: 3.10.6
Install: pip install jupyterlab

[patelabhilash]

my installation location as ubuntu WSL user:

Available kernels:
  ganymede-2.1.1-java-17    /home/patel/.local/share/jupyter/kernels/ganymede-2.1.1-java-17
  python3                   /usr/share/jupyter/kernels/python3

Hope it helps! working fine for me.