Based on the same idea as Symfony Flex, HarmonyFlex is the only way to install and manage your HarmonyCMS application. HarmonyFlex is a command line tool to automates installation, configuration, deployment of addons (extensions, packages, themes and translations) and other Composer dependencies (default scope).
HarmonyFlex is a Composer plugin who is loaded when the user (you) execute some Composer commands. This plugin, modify the behavior of some commands such as
update by running new automated tasks to prevent the end user (still you) to perform manual actions.
To have more details on how this plugin modify the behavior of the Composer tool, check the next articles here: