systemd/system/suspend@.service

   1 # Proxy the system suspend.target to a users suspend.target. Enable with:
   2 #    systemctl enable suspend@$(whoami)
   3 [Unit]
   4 Description=Call user's suspend target when system suspends
   5 After=suspend.target
   6
   7 [Service]
   8 Type=oneshot
   9 ExecStart=/usr/bin/systemctl --user --machine=%i@ start --wait suspend.target
  10
  11 [Install]
  12 WantedBy=suspend.target