How can I change the value of some settings such as Restart= to always or on-failure or something conditionally using some variable or anything else? I’ve already seen Environment= and EnvironmentFile= but those only change the environment of the executed process as far as I can tell.

I have a program which when run from the terminal as either the user or as root, can access and write files to the filesystem. However when I run it as a systemd managed service or daemon it cannot. The daemon process is running as root.