This means: 1. when updating sources.list but not installing any packages it should revert the system state again 2. when the lock is taken it should at either show a message or keep spinning on it for some seconds at least
This means:
1. when updating sources.list but not installing any packages it should revert the system state again
2. when the lock is taken it should at either show a message or keep spinning on it for some seconds at least