doc: Document 'advertise?' for 'guix-publish-configuration'.

* doc/guix.texi (Base Services): Document the 'advertise?' field of
'guix-publish-configuration'.
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Ludovic Courtès 2020-12-09 11:58:01 +01:00
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@ -15353,6 +15353,14 @@ The TCP port to listen for connections.
The host (and thus, network interface) to listen to. Use
@code{"0.0.0.0"} to listen on all the network interfaces.
@item @code{advertise?} (default: @code{#f})
When true, advertise the service on the local network @i{via} the DNS-SD
protocol, using Avahi.
This allows neighboring Guix devices with discovery on (see
@code{guix-configuration} above) to discover this @command{guix publish}
instance and to automatically download substitutes from it.
@item @code{compression} (default: @code{'(("gzip" 3))})
This is a list of compression method/level tuple used when compressing
substitutes. For example, to compress all substitutes with @emph{both} lzip