Update to JLab 3 (#217)

Co-authored-by: James Bourbeau <jrbourbeau@gmail.com>
Co-authored-by: Jacob Tomlinson <jtomlinson@nvidia.com>

binder/environment.yml

@@ -7,9 +7,8 @@ dependencies:
   - dask=2.20.0
   - dask-image=0.2.0
   - dask-ml=1.6.0
-  - dask-labextension=2.0.2
-  - jupyterlab=2.1
-  - nodejs=16
+  - dask-labextension>=5.2.0
+  - jupyterlab>=3
   - numba
   - numpy=1.21
   - pip
@@ -19,7 +18,6 @@ dependencies:
   - seaborn
   - scikit-learn=0.23
   - matplotlib
-  - nbserverproxy
   - nomkl
   - h5py
   - xarray

binder/example.jupyterlab-workspace

@@ -0,0 +1 @@
+{"data":{"layout-restorer:data":{"main":{"dock":{"type":"split-area","orientation":"horizontal","sizes":[0.5,0.5],"children":[{"type":"tab-area","currentIndex":0,"widgets":["markdownviewer-widget:Welcome.md"]},{"type":"split-area","orientation":"vertical","sizes":[0.5,0.5],"children":[{"type":"tab-area","currentIndex":0,"widgets":["dask-dashboard-launcher:/individual-task-stream"]},{"type":"tab-area","currentIndex":0,"widgets":["dask-dashboard-launcher:/individual-progress"]}]}]},"current":"markdownviewer-widget:Welcome.md"},"down":{"size":0,"widgets":[]},"left":{"collapsed":false,"current":"filebrowser","widgets":["filebrowser","jp-property-inspector","running-sessions","dask-dashboard-launcher","@jupyterlab/toc:plugin","extensionmanager.main-view"]},"right":{"collapsed":true,"widgets":["debugger-sidebar"]},"relativeSizes":[0.16362230919765167,0.8363776908023483,0]},"file-browser-filebrowser:cwd":{"path":""},"workspace-ui:lastSave":"/default.jupyterlab-workspace","markdownviewer-widget:Welcome.md":{"data":{"path":"Welcome.md","factory":"Markdown Preview"}},"dask-dashboard-launcher:/individual-task-stream":{"data":{"route":"/individual-task-stream","label":"Task Stream","key":"Task Stream"}},"dask-dashboard-launcher:/individual-progress":{"data":{"route":"/individual-progress","label":"Progress","key":"Progress"}},"dask-dashboard-launcher":{"url":"DASK_DASHBOARD_URL","cluster":""}},"metadata":{"id":"default","last_modified":"2021-12-20T20:41:35.169956+00:00","created":"2021-12-20T20:41:35.169956+00:00"}}

binder/start

@@ -1,9 +1,13 @@
 #!/bin/bash
 
 # Replace DASK_DASHBOARD_URL with the proxy location
-sed -i -e "s|DASK_DASHBOARD_URL|${JUPYTERHUB_BASE_URL}user/${JUPYTERHUB_USER}/proxy/8787|g" binder/jupyterlab-workspace.json
+sed -i -e "s|DASK_DASHBOARD_URL|${JUPYTERHUB_BASE_URL}user/${JUPYTERHUB_USER}/proxy/8787|g" binder/example.jupyterlab-workspace
 
+# TODO: Importing of workspace via CLI is currently broken.
+# remove this workaround once https://github.com/jupyterlab/jupyterlab/issues/10805 is resolved
+mkdir -p ~/.jupyter/lab/workspaces/
+mv binder/example.jupyterlab-workspace ~/.jupyter/lab/workspaces/default-37a8.jupyterlab-workspace
 # Import the workspace
-jupyter lab workspaces import binder/jupyterlab-workspace.json
+# jupyter lab workspaces import binder/example.jupyterlab-workspace
 
 exec "$@"