Hi, This error means that the module containing “samba-service-type” is not included in your configuration file (in use-modules or use-service-modules).
The samba-service-type variable is declared in “gnu/services/samba.scm”, you can know this in the output of “guix system search samba” for example. It would look like either (at the top of your file): (use-modules ... (gnu services samba)) Or: (use-service-modules ... samba) Have a nice day, Noé
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