JLab throws "No module named 'jsonschema.protocols'"

[dominiquesydow]

With teachopencadd installation from #296, I am running into the following error under MacOS/M1 chip when calling jupyter lab (jupyter notebook works):

$ jupyter lab
Traceback (most recent call last):
  File "/Users/dominique/mambaforge/envs/toc-dev/bin/jupyter-lab", line 6, in <module>
    from jupyterlab.labapp import main
  File "/Users/dominique/mambaforge/envs/toc-dev/lib/python3.9/site-packages/jupyterlab/labapp.py", line 13, in <module>
    from jupyter_server.serverapp import flags
  File "/Users/dominique/mambaforge/envs/toc-dev/lib/python3.9/site-packages/jupyter_server/serverapp.py", line 33, in <module>
    from jupyter_events.logger import EventLogger
  File "/Users/dominique/mambaforge/envs/toc-dev/lib/python3.9/site-packages/jupyter_events/__init__.py", line 3, in <module>
    from .logger import EVENTS_METADATA_VERSION, EventLogger
  File "/Users/dominique/mambaforge/envs/toc-dev/lib/python3.9/site-packages/jupyter_events/logger.py", line 19, in <module>
    from .schema_registry import SchemaRegistry
  File "/Users/dominique/mambaforge/envs/toc-dev/lib/python3.9/site-packages/jupyter_events/schema_registry.py", line 3, in <module>
    from .schema import EventSchema
  File "/Users/dominique/mambaforge/envs/toc-dev/lib/python3.9/site-packages/jupyter_events/schema.py", line 6, in <module>
    from jsonschema.protocols import Validator
ModuleNotFoundError: No module named 'jsonschema.protocols'

[dominiquesydow]

(a) Current teachopencadd environment

Cannot run JLab (see error traceback above)

jupyter                   1.0.0            py39h6e9494a_8    conda-forge
jupyter_client            7.4.8              pyhd8ed1ab_0    conda-forge
jupyter_console           6.4.4              pyhd8ed1ab_0    conda-forge
jupyter_core              5.1.0            py39h6e9494a_0    conda-forge
jupyter_events            0.5.0              pyhd8ed1ab_0    conda-forge
jupyter_server            2.0.5              pyhd8ed1ab_1    conda-forge
jupyter_server_terminals  0.4.3              pyhd8ed1ab_0    conda-forge
jupyterlab                3.5.2              pyhd8ed1ab_0    conda-forge
jupyterlab_pygments       0.2.2              pyhd8ed1ab_0    conda-forge
jupyterlab_server         2.16.6             pyhd8ed1ab_0    conda-forge
jupyterlab_widgets        1.1.1              pyhd8ed1ab_0    conda-forge

jsonschema                3.2.0              pyhd8ed1ab_3    conda-forge
python-fastjsonschema     2.16.2             pyhd8ed1ab_0    conda-forge

[dominiquesydow]

(b) Environment with only jupyterlab installed (selected packages)

CONDS_SUBDIR=osx-64 mamba create -n jlab-only-3.5.2 jupyterlab

Can run JLab.

jupyter_client            7.4.8              pyhd8ed1ab_0    conda-forge
jupyter_core              5.1.1           py311h267d04e_0    conda-forge
jupyter_events            0.5.0              pyhd8ed1ab_1    conda-forge
jupyter_server            2.0.6              pyhd8ed1ab_0    conda-forge
jupyter_server_terminals  0.4.3              pyhd8ed1ab_0    conda-forge
jupyterlab                3.5.2              pyhd8ed1ab_0    conda-forge
jupyterlab_pygments       0.2.2              pyhd8ed1ab_0    conda-forge
jupyterlab_server         2.17.0             pyhd8ed1ab_0    conda-forge


jsonschema                4.17.3             pyhd8ed1ab_0    conda-forge
python-fastjsonschema     2.16.2             pyhd8ed1ab_0    conda-forge

[dominiquesydow]

Possibly, jupyter_events did not pin jsonschema in conda package; follow dependency settings as shown here:
https://github.com/jupyter/jupyter_events/blob/b9ecbf5ed0b33213d371d03bf1108c0bb5564004/pyproject.toml#L26

and pin jupyter_events to >=4.3.0