Yesterday, after a partial upgrade in my Ubuntu 12.10 installation, git was uninstalled. After the upgrade I tried to re-install it and got the following error: sudo apt-get install git Reading package lists… Done Building dependency tree Reading state information… Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming.