ipywidgets, pandas, and py4j need to be explicit dependencies

[SalvatoreT]

I installed beakerx via pip3 install beakerx, but when I went to run it, I found out it didn't include ipywidgets.

21:51 $ beakerx
Traceback (most recent call last):
  File "/usr/local/bin/beakerx", line 5, in <module>
    from beakerx import run
  File "/usr/local/lib/python3.7/site-packages/beakerx/__init__.py", line 15, in <module>
    from .plot import *
  File "/usr/local/lib/python3.7/site-packages/beakerx/plot/__init__.py", line 15, in <module>
    from .chart import *
  File "/usr/local/lib/python3.7/site-packages/beakerx/plot/chart.py", line 15, in <module>
    from beakerx.beakerx_widgets import BeakerxDOMWidget
  File "/usr/local/lib/python3.7/site-packages/beakerx/beakerx_widgets.py", line 15, in <module>
    from ipywidgets import Box, DOMWidget, CoreWidget, \
ModuleNotFoundError: No module named 'ipywidgets'

After running pip3 install ipywidgets, I ran into a similar issue where pandas and py4j was required but not installed.

Please add them as explicit dependencies for the pip package to make the install process smoother.

[SalvatoreT]

It looks like there are no dependencies listed on the setup.py files that pip uses. The Python documentation lists two options to fix this.

[jimmybow]

ipywidgets 8 is not surport, please add version info to setup.py ipywidgets>=7.6,<8 https://github.com/twosigma/beakerx/blob/master/beakerx-dist/setup.py#L56