Systemd service config overwride

You may tune systemd service files without touch provided package files just with something like:

$ sudo systemctl edit bluetooth.service

Then, write your modifications:

[Service]
ExecStart=
ExecStart=/usr/libexec/bluetooth/bluetoothd --noplugin=sap

References

• https://raspberrypi.stackexchange.com/questions/40839/sap-error-on-bluetooth-service-status/99920#99920