An error occurred installing @jupyterlab/toc-extension.

[BenchHPZ]

I've just change from jupyter notebook to jupyter lab. When I try to install the toc extension, i got

Extension Installation Error

An error occurred installing @jupyterlab/toc-extension.

Error message:

No version of @jupyterlab/toc-extension could be found that is compatible with the current version of JupyterLab. However, it seems to support a new version of JupyterLab. Consider upgrading JupyterLab.

Conflicting Dependencies:
JupyterLab              Extension      Package
>=2.2.6 <2.3.0          >=3.0.0-beta.8 <4.0.0@jupyterlab/application
>=2.2.4 <2.3.0          >=3.0.0-beta.8 <4.0.0@jupyterlab/docmanager
>=2.2.4 <2.3.0          >=3.0.0-beta.8 <4.0.0@jupyterlab/fileeditor
>=2.2.7 <2.3.0          >=3.0.0-beta.8 <4.0.0@jupyterlab/notebook
>=2.2.4 <2.3.0          >=3.0.0-beta.8 <4.0.0@jupyterlab/rendermime

When I search for the instaleld versions in my device it says that

$ jupyter --version
jupyter core     : 4.6.3
jupyter-notebook : 6.1.4
qtconsole        : 4.7.7
ipython          : 7.18.1
ipykernel        : 5.3.4
jupyter client   : 6.1.7
jupyter lab      : 2.2.9
nbconvert        : 6.0.7
ipywidgets       : 7.5.1
nbformat         : 5.0.8
traitlets        : 5.0.5

which it seems to be compatible.

[KennyNg-19]

same here

[lresende]

If you install JupyterLab 3.0, TOC is pre-installed as it moved to be a core-extension.

[numeric-lee]

@jasongrout similar problem, jupyterlab 1.23.

when I install

Extension Installation Error

An error occurred installing @jupyterlab/toc-extension.
Error message:

No version of @jupyterlab/toc-extension could be found that is compatible with the current version of JupyterLab. However, it seems to support a new version of JupyterLab. Consider upgrading JupyterLab.

Conflicting Dependencies:
JupyterLab              Extension      Package
>=1.2.1 <1.3.0          >=3.0.9 <4.0.0 @jupyterlab/application
>=1.2.1 <1.3.0          >=3.0.9 <4.0.0 @jupyterlab/docmanager
>=1.2.1 <1.3.0          >=3.0.9 <4.0.0 @jupyterlab/fileeditor
>=1.2.2 <1.3.0          >=3.0.9 <4.0.0 @jupyterlab/notebook
>=1.2.1 <1.3.0          >=3.0.8 <4.0.0 @jupyterlab/rendermime

conda update -c conda-forge jupyterlab

fails

Solving environment: | The environment is inconsistent, please check the package plan carefully The following packages are causing the inconsistency: - conda-forge/noarch::jupyter_contrib_core==0.3.3=py_2 - conda-forge/linux-64::ipykernel==5.1.3=py36h5ca1d4c_0 - conda-forge/noarch::qtconsole==4.6.0=py_0 - conda-forge/noarch::jupyter==1.0.0=py_2 - conda-forge/linux-64::notebook==6.0.1=py36_0 - conda-forge/noarch::geoviews-core==1.6.6=py_0 - conda-forge/noarch::jupyterlab_server==1.0.6=py_0 - conda-forge/noarch::jupyter_console==6.0.0=py_0 - conda-forge/noarch::jupyterlab==1.2.3=py_0 - conda-forge/noarch::geoviews==1.6.6=py_0 - conda-forge/linux-64::jupyter_latex_envs==1.4.4=py36_1000 - conda-forge/noarch::ipywidgets==7.5.1=py_0 - conda-forge/noarch::holoviews==1.12.7=py_0 - conda-forge/linux-64::widgetsnbextension==3.5.1=py36_0 - conda-forge/linux-64::jupyter_highlight_selected_word==0.2.0=py36_1000 - conda-forge/noarch::nbdime==2.0.0=py_1 \

also tried
jupyter labextension install jupyterlab-toc

extension manger is enabled and I have other extensions installed

[fcollonval]

@numeric-lee for JupyterLab 1 and 2, the correct extension name is

jupyter labextension install @jupyterlab/toc

[numeric-lee]

@fcollonval
Thanks so much. That solution unfortunately doesnt work, at least for me
Any other suggestions?

$ jupyter labextension install @jupyterlab/toc

Errored, use --debug for full output:
ValueError: Please install nodejs 5+ and npm before continuing. nodejs may be installed using conda or directly from the nodejs website.
le@b4d54aa411df �data

cannot install the dependencies

$ conda install -c conda-forge nodejs
Collecting package metadata: done
Solving environment: | Killed
le@b4d54aa411df �data

From the jupyterlab UI, when I type your suggested extension to the searchbox, it finds only toc-extension

installing that from the UI fails with the same error as from the command line

[numeric-lee]

I was at least able to install the @aquirdturtle/collapsible_headings extension which has slightly similar funcitonality.

[fcollonval]

$ conda install -c conda-forge nodejs
Collecting package metadata: done
Solving environment: | Killed

You need to figure out why this is not working because without nodejs, you won't be able to install JupyterLab extensions for version prior to v3.

I was at least able to install the @aquirdturtle/collapsible_headings

This is suprising because, you could only install it if nodejs was installed.

You could try forcing the extension version; for JupyterLab v1, the latest compatible version is

jupyter labextension install "@jupyterlab/[email protected]"

@jupyterlab/toc-extension is only available on JupyterLab v3

[numeric-lee]

[telamonian]

@numeric-lee Your environment is borked, you need to fix that first. Try this suggestion from SO to get a recent-enough version of nodejs installed:

conda install nodejs -c conda-forge --repodata-fn=repodata.json --debug

If that doesn't work, your only option may be to move on and start a new conda env.

Once you have node installed, my strong recommendation would be to first upgrade to the latest 3.x jupyterlab. jlab 1.2.3 is practically ancient at this point; there have been literally thousands of fixes and improvements made since v1.2.3 was released 2+ years ago. It also has the TOC builtin.

Still, if you really want to, once you have node installed, the:

jupyter labextension install @jupyterlab/toc

command should then run correctly.

[sushmit86]

Any updates on this one? I am also getting the same error

[fcollonval]

Any updates on this one? I am also getting the same error

@sushmit86 if you are using JupyterLab 3, the extension is built-in and don't need to be installed.

[numeric-lee]

Can someone share instructions on how to update. Thus far nothing has worked for me

…

On Fri, Jul 23, 2021, 1:30 AM Frédéric Collonval ***@***.***> wrote: Any updates on this one? I am also getting the same error @sushmit86 <https://github.com/sushmit86> if you are using JupyterLab 3, the extension is built-in and don't need to be installed. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#156 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AOJ5LXHFHKG3M3RH7RY6CWTTZD5A5ANCNFSM4TEIBOPQ> .

[sushmit86]

@fcollonval I am on Jupyter lab3

[SylvainCorlay]

@sushmit86 you don't need this extension in lab 3.0 which already includes the jupyterlab-toc feature.

Jupyterlab-toc is for jupyterlab 2.0 only and the repository has been archived.

[sushmit86]

@SylvainCorlay and @fcollonval Thanks for the help, I figured out it was an environment issue.

[HalleypC]

I had this issue as well and realized from the 2021 comments that it's already build in to lab 3. Unfortunately when I click install nothing happens. Not sure what to do at this point?

[krassowski]

@HalleypC you don't need to click install, because as you mention it is already build in. The sidebar tab above the extensions manager includes the TOC panel; for overview of functions see the documentation: https://jupyterlab.readthedocs.io/en/stable/user/toc.html

[HalleypC]

wow ha, can you tell how new I am? Thank you @krassowski !

[fcollonval]

Locking as it is now part of JupyterLab (since v3) and users are very likely to use it.