I’m glad to inform you that writing support has been implemented now. That means any change made via nm-applet will be written into /etc/conf.d/net and /etc/wpa_supplicant/wpa_supplicant.conf. You won’t have to modify these configuration files manually in most time.
Welcome you to join and test the plug-in if you are interested. Current stable version is networkmanager-0.8-r102. (Thanks to Robert)
layman -a dagger (or layman -S)
emerge -av networkmanager
Remember to make your connection available to all users if you want your changes to be written to configuration files. If you have difficulty doing it, hope this article could help you. Here is a demo for making wireless connection:
Several people wondered whether NetworkManager could work properly together with OpenRC scripts. I haven’t tested yet but I think it could be achieved. Here’s instruction on how to do it: Making NetworkManager work together with OpenRC scripts. It’s really easy.
Hope you enjoy it. If you have any problem, feel free to contact me 🙂