Updates happens multiple times, normally 2 to 3, even if we consider a
state without includes. On states with multiple includes, it could
easily get approximately 10 updates being ran. This behavior leads to
unnecessary network bandwidth being spent and more time to run the
installation state. When the connection is slow and not using the
cacher, such as torified connections on Whonix, the installation can
occurs much faster.
Adding external repositories has to be done prior to update to ensure it
is also fetched.
Fixes: https://github.com/ben-grande/qusal/issues/29
The removal was first implemented to get a clean state of the qube, but
there are side effects, it fails if the user created a named disposable
based on the dvm and also removes the (dvm) entry from the appmenu.
The sys-usb case is a workaround in case the user selected a
non-disposable, an appvm sys-usb during system installation.
