Pour toutes questions sur nos formations Drupal, n'hésitez pas à nous contacter.
The plugin manager is designed to provide an in browser interface to administrators to install modules and themes. It automates the process of downloading a project release, extracting files from it and installing them in their appropriate locations.
6.x-1.x is the currently supported version. Unfortunately, as the first publicly used module that I wrote and the first 6.x module that I created, the design of the plugin manager didn't have much experience to draw from. As such, it's a maintenance nightmare. It works, but it isn't very fun to develop. For this reason, when a stable 2.x release is made, 1.x will no longer be supported. Until the release of 2.x, only security releases will be made.
6.x-2.x is not complete. Some features are not implemented. Some are just simply broken. Some rely on bad assumptions. In any case, if you want would like to help with the future of the plugin manager, please test on this version. The more testing and review this gets, the sooner it can be released, and the more complete the release can be. (And honestly, it acts as a huge source of encouragement.)
If you feel like contributing / experimenting, please consider trying 2.x. Otherwise, 1.x would be your best option.