Ok, aegis can be a PITA. For example right now I wonder why my app is not getting location access even though the manifest seems to be ok.

On the other hand however, I like the idea of controlling the privileges each app has and it seems that aegis has fine grained control. I would love it even more if I could deny some of the credentials at install time, or even more through a settings page. (Long tap an app, see all the requested permissions and turn off the ones you don't like - for example all apps on android ask pretty much for everything, why the heck would a flashlight app need access to contacts??)

Aegis also enables you to create secure dbus calls so that you can make sure no other app exploits your access to vital functions (e.g. calls)

That's a whole different story than disallowing the user (or root) to do things, I don't like THAT obviously.

Anyway is it opensource? Any chance we will see a similar permission system on our desktops soon?