New comment by narodnik on void-packages repository https://github.com/void-linux/void-packages/issues/46261#issuecomment-1880000296 Comment: I had to install jupyter, python3-jupyter_notebook and I also [did these commands](https://doc.sagemath.org/html/en/installation/launching.html#setting-up-sagemath-as-a-jupyter-kernel-in-an-existing-jupyter-notebook-or-jupyterlab-installation), then it worked for me.