Installation freezes on Resolving packages... @oriolmirosa/jupyterlab_materialdarker@file:../extensions/oriolmirosa-jupyterlab_materialdarker-0.3.0.tgz about jupyterlab_materialdarker

[joshbode]

Thanks @thongnnguyen :)

This worked for me with no downgrade of node required:

$ npm install -g yarn
/Users/josh/.local/bin/yarnpkg -> /Users/josh/.local/lib/node_modules/yarn/bin/yarn.js
/Users/josh/.local/bin/yarn -> /Users/josh/.local/lib/node_modules/yarn/bin/yarn.js
+ [email protected]
updated 1 package in 0.485s

$ yarn config set yarn-path "$(which yarn)"
yarn config v1.9.2
success Set "yarn-path" to "/Users/josh/.local/bin/yarn".

$ jupyter labextension install @oriolmirosa/jupyterlab_materialdarker

macOS 10.13.6, Node v10.7.0 (via brew), Python 3.7.0 (via brew), JupyterLab 0.33.4 (via pip)

[thgngu]

Everyone,

I had a similar issue with another jupyterlab extension (before I come to this extension). This comment helps me fix the problem without downgrading my node 10.

I'm on Ubuntu 16.04, Anaconda 4.5.8, Python 3.6, Jupyterlab 0.32.1

[oriolmirosa]

Jupyterlab 0.34 contains this change:

• JupyterLab now uses yarn 1.9.4 (aliased as jlpm), which now allows users to use Node 10+. (#5121).

This issue should be resolved then. Please feel free to re-open if the problems continue.

Thanks everyone!

[oriolmirosa]

Are you on node 10? There are reports of this happening with jupyterlab extensions if node 10 is installed. Downgrade to a node 9 version and try again. Let me know if this is still happening then.

[ivan-rivera]

Had to downgrade to node 8 and then I managed to install it. But then I ran into another issue -- after launching jupyter and selecting this theme, I got an error in my browser:

Error Loading Theme -- Stylesheet failed to load: /lab/api/themes/MaterialDarker/index.css

I was then unable to interact with the page and the only way to recover jupyter was to uninstall this extension.

[oriolmirosa]

Hmm... I have only seen a problem like this when I have tried to install the extension on a jupyterhub instance and I had issues with user permissions. Are you installing this on your own system? What is the application directory in jupyter lab path (the first on the list)? Do you have permissions to access it? If you do, I suggest that you manually delete the extension from the extensions folder in the application directory and reinstall from scratch. Let me know what happens.

[ivan-rivera]

Yep, I'm installing it on my system. The application directory you were wondering about is /anaconda3/share/jupyter/lab and I do have permissions to access it, I was running the installation in sudo mode.

[oriolmirosa]

That might be the issue. If you install with sudo the path is probably different and you have a permission issue. Did you install anaconda as root? That can lead to problems. See the last comment in this thread:

conda/conda#6638

[universvm]

I am not sure if it can help, but I am not using anaconda and I am having the same problem.

[oriolmirosa]

@universvm, what version of Node are you using?

[universvm]

@oriolmirosa I was using 10.3 but even after updating to 10.6 the problem persists.

[oriolmirosa]

@universvm As I mentioned earlier in the thread, this is a known problem of jupyterlab with Node 10. If you downgrade to Node 9 the problem should go away. Can you give it a try?

[universvm]

@oriolmirosa I can't downgrade unfortunately as I am on a work laptop. Is there really no alternative?

Could you also provide a solution to the following problem, I can't seem to get rid of this error message...

[oriolmirosa]

@universvm The build message would disappear if you were able to install the extension. As far as I know, the original problem is a general issue with jupyterlab, which is not unexpected given that jupyterlab is still in beta. I saw that the first release candidate of jupyterlab 0.33 was pushed a few days ago, so you could install that (or wait until the official 0.33 release soon) to see if the issue with node 10 is fixed.

[kurakuradave]

Hi, I managed to install it and set my color theme, however that "Build Recommended" message appears every time I started jupyterlab.. any ideas? thanks
I'm on Ubuntu 16.04, python 3.5.2 and jupyter lab 0.32.1