Deck.gl: Problem installing for Jupyter Lab: 'DECKGL_SEMVER' is not recognized as an internal or external command

[pybokeh]

I am following the instructions here for Jupyter Lab:

jupyter labextension install @jupyter-widgets/jupyterlab-manager
DECKGL_SEMVER=`python -c "import pydeck; print(pydeck.frontend_semver.DECKGL_SEMVER)"`
jupyter labextension install @deck.gl/jupyter-widget@$DECKGL_SEMVER

For that 2nd line, I get the following error:
'DECKGL_SEMVER' is not recognized as an internal or external command

This is a strange command to execute. I thought perhaps it is an environment variable that needs to be set. So on Windows I tried:

set DECKGL_SEMVER='python -c "import pydeck; print(pydeck.frontend_semver.DECKGL_SEMVER)"'

But when I then do:

jupyter labextension install @deck.gl/jupyter-widget@$DECKGL_SEMVER

I get the following error:

An error occured.
ValueError: "@deck.gl/jupyter-widget@$DECKGL_SEMVER" is not a valid npm package
See the log file for details:  C:\Users\your_username\AppData\Local\Temp\jupyterlab-debug-_q8w72gn.log

Windows 10, Python 3.8, node version 14.15.0 and npm version 6.14.8

[kylebarron]

Hmm maybe the docs were written with Mac/Unix in mind. I don't know Windows well, but yes, that's intended to be an environment variable you set.

We should update the docs but in the meantime you should be able to avoid the environment variable by running the command directly and pasting it on the next line, e.g. on my Mac:

> python -c "import pydeck; print(pydeck.frontend_semver.DECKGL_SEMVER)"
~8.2.*
> jupyter labextension install "@deck.gl/jupyter-widget@~8.2.*"
Building jupyterlab assets (build:dev:minimize)

(because of the shell I use, I need quotes when I paste those characters)

[ajduberstein]

What @kylebarron says is true–the instructions are for Mac/Unix. I'll update the docs.

[pybokeh]

Thanks for the helpful replies. The workaround has worked for me.