Collecting jupyterlab==0.21.0rc3
Downloading jupyterlab-0.21.0rc3-py2.py3-none-any.whl (4.5MB)
Saved /tmp/tmpmx0_n9d5/jupyterlab-0.21.0rc3-py2.py3-none-any.whl
Skipping jupyterlab, due to already being wheel.