Question

3

How to correctly configure Snap'd Firefox to open local html-file, generated by Jupyter Notebook launcher?

rated 0 times [ 3] [ 0] / answers: 1 / hits: 2570 / 2 Years ago, sat, july 2, 2022, 10:32:56

I'm currently running Ubuntu MATE 21.10.

As an experiment (to be ready to Firefox deb → Snap migration) I have removed deb-packaged Firefox from it by

sudo apt-get autopurge firefox

and installed Snap version of Firefox with

snap install firefox

$ snap list firefox 

Name     Version   Rev  Tracking       Publisher  Notes

firefox  96.0.2-1  886  latest/stable  mozilla✓   -

Its permissions are default: only "Use any connected joystick" and "Read access to network settings" are disabled.

Also I have installed Jupyter Notebook from official repositories on this system by

sudo apt-get install jupyter-notebook

When I launch Jupyter Notebook using jupyter-notebook from terminal it shows some greeting message:

$ jupyter-notebook 

[I 18:24:31.237 NotebookApp] Serving notebooks from local directory: /home/i

[I 18:24:31.237 NotebookApp] Jupyter Notebook 6.2.0 is running at:

[I 18:24:31.237 NotebookApp] http://localhost:8888/?token=7d0bbefd6ff58eddf9a1dbbd3d63e273282311d5b346cbe3

[I 18:24:31.237 NotebookApp]  or http://127.0.0.1:8888/?token=7d0bbefd6ff58eddf9a1dbbd3d63e273282311d5b346cbe3

[I 18:24:31.237 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).

[C 18:24:31.295 NotebookApp] 

   

   To access the notebook, open this file in a browser:

       file:///home/i/.local/share/jupyter/runtime/nbserver-2252-open.html

   Or copy and paste one of these URLs:

       http://localhost:8888/?token=7d0bbefd6ff58eddf9a1dbbd3d63e273282311d5b346cbe3

    or http://127.0.0.1:8888/?token=7d0bbefd6ff58eddf9a1dbbd3d63e273282311d5b346cbe3

then opens Firefox with error message inside it:

Access to the file was denied

The file at /home/i/.local/share/jupyter/runtime/nbserver-2252-open.html is not readable.

It may have been removed, moved, or file permissions may be preventing access.

From the same machine I can access this file using terminal

$ ls -al /home/i/.local/share/jupyter/runtime/nbserver-2252-open.html

-rw-rw-r-- 1 i i 673 Jan 28 18:24 /home/i/.local/share/jupyter/runtime/nbserver-2252-open.html

or using deb-packaged Epiphany.

I already know that there is a workaround by visiting localhost's URLs (http://localhost:8888/?token=7d0bbefd6ff58eddf9a1dbbd3d63e273282311d5b346cbe3
or http://127.0.0.1:8888/?token=7d0bbefd6ff58eddf9a1dbbd3d63e273282311d5b346cbe3), but it is not user-friendly and break normal expected workflow.

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answered 2 Years ago oreera · Accepted Answer

Just make a launcher to circumvent the snap restraint.

A simple launcher would look like:

#!/bin/bash

export JUPYTER_DATA_DIR=/home/$USER/Public

export JUPYTER_RUNTIME_DIR=/home/$USER/Public



jupyter-notebook

...or skip the launcher and set the environment variables wherever convenient.