When trying to add a custom Python library, I'm getting an error.

$ lean library add "My Project" openpyxl 
Retrieving latest compatible version from PyPI
Error: Parse error at "','": Expected stringEnd

This worked when I added “xlrd” but it fails with “openpyxl”. Note that I can install openpyxl locally fine, I just can't use the “lean library add” command to get it installed in Docker, too.

Does anyone have any ideas on how I can work around this to get openpyxl installed on the Docker image?