Simple HTTP server returning calendar entries for all Wekan cards with set due date. To be used with Lightning or similar calendar app (read-only). Yes, it's not the best solution, but it does the job (at least for me). Depends on: https://github.com/wekan/wekan-python-api-client

Running: python wekan_ical_server.py (don't forget to set your Wekan url and login/passwd) then add new network calendar in your app with url: http://LISTEN_HOST:LISTEN_PORT Done.