Cant use the same document for multiple chapters/sections

[JohnTrunix]

Describe the bug

context In my _toc.yml file i made multiple chapters with sections, and i want to show specific sides (.ipynb) multiple times in different sections or chapters. But instead it displays me an error while building.

expectation I expected that that i can view my .ipynb file parallel in different sections

bug But instead i got an error: Here's an error message I ran into...

The Table of Contents file is malformed: document file used multiple times: 'visualization/ipynb/scatter'
You may need to migrate from the old format, using:

        jupyter-book toc migrate C:\Users\JohnT\GithubProjects\data-science-jupyter-book\_toc.yml -o C:\Users\JohnT\GithubProjects\data-science-jupyter-book\_toc.yml

Reproduce the bug

There are two ways to reproduce:

1. clone my repo with the dev branch and build it Dev or
2. build a new book
3. in your _toc.yml create two sections and add the same file to both sections
4. build it

List your environment

Jupyter Book      : 0.13.0
External ToC      : 0.2.4
MyST-Parser       : 0.15.2
MyST-NB           : 0.13.2
Sphinx Book Theme : 0.3.2
Jupyter-Cache     : 0.4.3
NbClient          : 0.5.13

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[epogrebnyak]

Not a bug - it is expected behaviour of jupyter-book. You may want to do a workaround (make a copy of notebook under different name) or reclass this issue as enhancement / feature proposal.

[davidvandebunte]

@JohnTrunix Did you ever reclass this as a feature proposal? Offhand, I'm not seeing it. If not, can I go ahead and do so?

[JohnTrunix]

Hi David, no I didn't create a feature proposal as my project was just a POC. Feel free to create one!

[davidvandebunte]

Converted to https://github.com/executablebooks/jupyter-book/issues/2094.