Oxalica -- authored Nov 02, 2021 and David Edmundson committed Nov 02, 2021

Systemd units which are symlinked to the service directory will be in
`linked` or `linked-runtime` state. They are also available and
runnable. This can happen when the package manager uses symlinks to
install systemd units instead of copying them, like on NixOS.


(cherry picked from commit a6e513d0)