How to install a Python library 'PyJWT' , while installing a App/Add-on

[sbel]

In our App/Add-on  python code we need access to Python library which allows to encode and decode JSON Web Tokens (JWT).  Currently we packaged cffi and PyJWT under lib with necessary  cffi backend required for each OS.  I.e  for linux : _cffi_backend.cpython-37m-x86_64-linux-gnu.so and for Windows :  _cffi_backend.cp37-win_amd64.pyd.   

This worked until recently.  where we updated the Add-on Splunk-sdk-python to 2.0.2 and the Add-on started failing on Splunk Cloud environment.   Error: No module named '_cffi_backend'. 

What OS and version is running the splunk cloud? and Is there any way to invoke  python library install command 'pip install pyjwt' while add-on install ? 

[VatsalJagani]

@sbel- It is not recommend to install the package on install of App/Add-on, for a lot of reasons, it always good idea to bundle it as part of the App/Add-on build.

Now the case of what OS version Splunk Cloud is running, you can ask this to Splunk Cloud Support.

I hope this helps!!! Kindly upvote if it does!!