This package enables users to start web servers in JupyterLab and access them, which is useful in rare edge cases like post-processing of viztracer results.
The latest spack package installs py-jupyter-server-proxy v3.2.2.
The current version on pypi is v4.4.0.
https://packages.spack.io/package.html?name=py-jupyter-server-proxy
https://jupyter-server-proxy.readthedocs.io/en/latest/
https://github.com/jupyterhub/jupyter-server-proxy
https://pypi.org/project/jupyter-server-proxy/