
This has some advantages: * You get ssh-agent regardless of how you logged in. Previously it was only started for X11 sessions. * All sessions of a user share the same agent. So if you added a key on tty1, it will also be available on tty2. * Systemd will restart ssh-agent if it dies. * $SSH_AUTH_SOCK now points to the /run/user/<uid> directory, which is more secure than /tmp. For bonus points, we should patch ssh-agent to support socket-based activation...
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at http://nixos.org/nixos and in the manual in doc/manual.