Flet packaging update
The problem
When you package your Flet program in Python to run on a mobile device (or desktop) the resulting bundle (.apk, .ipa, .exe, .app) contains your Python program, Python interpreter and Python Standard Library.
If your program uses only Python standard library then packaging process is relatively easy - Flet zips your code and combines Flutter app together with Python interpreter and standard library both compiled for the target platform: Android or iOS.
However, problems may arise when your Flet program uses third-party packages, with thousands of them published on PyPI or Conda.