anchor.diff:      ++ optionals cfg.enableEmergencyMode [
         "emergency.target"
         "emergency.service"
  -    ]
  -
  -    ++ optionals config.services.journald.enableHttpGateway [
  -      "systemd-journal-gatewayd.socket"
  -      "systemd-journal-gatewayd.service"
       ];
   
     upstreamWants =
  
positive.code:         })
          (filterAttrs (name: service: service.startAt != "") cfg.services);
  
      # Provide the systemd-user PAM service, required to run systemd
      # user instances.
      security.pam.services.systemd-user =
  
negative.code:       "systemd-journald.socket"
        "systemd-journald.service"
        "systemd-journal-flush.service"
        "systemd-journal-gatewayd.socket"
        "systemd-journal-gatewayd.service"
        "syslog.socket"
  
        # SysV init compatibility.
  