[Unit]
Description=SSH key agent
Wants=dbus.socket
After=dbus.socket

[Service]
Type=simple
Environment=SSH_AUTH_SOCK=%t/ssh-agent.socket
ExecStartPre=/usr/bin/dbus-update-activation-environment --systemd SSH_AUTH_SOCK
ExecStart=/usr/bin/ssh-agent -D -a $SSH_AUTH_SOCK
ExecStopPost=/usr/bin/dbus-update-activation-environment --systemd SSH_AUTH_SOCK=
Restart=always