jupyterlab_bokeh needs to be included

Hi there,

I am trying to get bokeh to work with jupyterlab and couldn’t find the right answer… I am working under windows 10 and with other modules I found that using the Jupyter inline commands work best (I am a noobie and run into issues about where stuff gets installed all the time).

The following commands worked without errors (not sure if they are all relevant)

! conda install -y -c cpcloud npm
The following NEW packages will be INSTALLED:
    nodejs: 0.10.33-0 cpcloud
    npm:    1.4.12-0  cpcloud
[..]
import bokeh; bokeh.__version__
'0.12.13'
!conda list jupyter
# packages in environment at C:\Users\mnb3\AppData\Local\Continuum\anaconda3:
#
jupyter                   1.0.0            py36h422fd7e_2  
jupyter_client            5.1.0            py36h9902a9a_0  
jupyter_console           5.2.0            py36h6d89b47_1  
jupyter_core              4.3.0            py36h511e818_0  
jupyterlab                0.30.6           py36h047fa9f_0  
jupyterlab_launcher       0.6.0                    py36_0    conda-forge

But I got errors for

! jupyter labextension list

JupyterLab v0.30.6
Known labextensions:
   app dir: C:\Users\mnb3\AppData\Local\Continuum\anaconda3\share\jupyter\lab
jupyterlab_bokeh
        jupyterlab_bokeh v0.1.0 enabled  ok

Build recommended:
    jupyterlab_bokeh needs to be included

==> I guess that is the problem, it seems the wrong version and how do I include it? If I launch a jupyterlab from the anaconda navigator (1.6.10) it cycles through two popup windows:

Build Recommended
JupyterLab build is suggested:
jupyterlab_bokeh needs to be included
cancel      build
and
Build Complete
Build successfully completed, reload page?
cancel     reload

until I hit either cancel

from bokeh.io import output_notebook, show
from bokeh.plotting import figure

output_notebook()

# create a new plot with default tools, using figure
p = figure(plot_width=400, plot_height=400)

# add a circle renderer with a size, color, and alpha
p.circle([1, 2, 3, 4, 5], [6, 7, 2, 4, 5], size=15, line_color="navy", fill_color="orange", fill_alpha=0.5)

show(p) # show the results

Loading BokehJS ...
JavaScript output is disabled in JupyterLab
JavaScript output is disabled in JupyterLab

(works fine in a Jupyter notebook)

Thanks you for any suggestions…

[blink1073]

Hi! The missing step is a jupyter lab build to pick up the extension. You may need to conda install nodejs first if you don’t already have node installed.

[jasongrout]

Great. I’ll close this - but if the issue turns out to be an ipywidgets problem, feel free to reopen or open another issue.