Issues with widget_tutorial

[BattosaiX]

Hi -

I am trying to understand usage of perspective
I have been trying to run widget_tutorial.ipynb
(I had similar error trying to run the streaming example)
I get this error when trying to instantiate the widget at line 4 of widget_tutorial.ipynb

[Open Browser Console for more detailed log - Double click to close this message]
Failed to load model class 'PerspectiveModel' from module '@finos/perspective-jupyterlab'
Error: No version of module @finos/perspective-jupyterlab is registered
at f.loadClass (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/134.40eaa5b8e976096d50b2.js?v=40eaa5b8e976096d50b2:1:74856)
at f.loadModelClass (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js?v=b0e841b75317744a7595:1:10729)
at f._make_model (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js?v=b0e841b75317744a7595:1:7517)
at f.new_model (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js?v=b0e841b75317744a7595:1:5137)
at f.handle_comm_open (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.b0e841b75317744a7595.js?v=b0e841b75317744a7595:1:3894)
at _handleCommOpen (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/134.40eaa5b8e976096d50b2.js?v=40eaa5b8e976096d50b2:1:73393)
at b._handleCommOpen (http://localhost:8888/static/lab/jlab_core.4d5114e25256eeddf4e4.js?v=4d5114e25256eeddf4e4:2:1039655)
at async b._handleMessage (http://localhost:8888/static/lab/jlab_core.4d5114e25256eeddf4e4.js?v=4d5114e25256eeddf4e4:2:1041645)

I am using anaconda to launch jupyterlab

Any help with be greatly appreciated

Thanks

[gangtao]

I hit the same issue when using jypter notebook with following version jupyter/scipy-notebook:notebook-6.5.4

[gangtao]

I think this issue is caused by installation, perspeactive install need cmake, if you install it on an existing jyputer instance that does not have development environment, it wil be failed.