How to import -not installed- libraries in uiflow?

[eink_enthusiast]

Hello folks,
normally we would be able to install libraries with

import upip
upip.install('mvg-api')

unfortunately, upip seams to be not installed in UIFLOW.
How do you manage to install new libraries?

[ajb2k3]

Use the file manager to download libraries to the core or use Thonny to download to the core