[bug#75140] [PATCH] services: dnsmasq: Allow custom Shepherd provision

[45mg <45mg.writes@gmail.com>]

Allow users to have multiple dnsmasq instances by specifying different
`provision` values for the corresponding Shepherd services, similar to
what is done with `static-networking-service-type`.

* gnu/services/dns.scm (<dnsmasq-configuration>)[provision]: new option.
(dnsmasq-shepherd-service): Use supplied provision value.
* doc/guix.texi (DNS Services)[dnsmasq-configuration]: Document it.

Change-Id: I78c7f015cb1db239a600bc5373b2fd80e8b9b9f4
---
 doc/guix.texi        | 4 ++++
 gnu/services/dns.scm | 4 +++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/doc/guix.texi b/doc/guix.texi
index da4d2f5ebc..e9547ea8f2 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -34129,6 +34129,10 @@ DNS Services
 @item @code{package} (default: @var{dnsmasq})
 Package object of the dnsmasq server.
 
+@item @code{provision} (default: @code{'(dnsmasq)})
+A list of symbols for the Shepherd service corresponding to this dnsmasq
+configuration.
+
 @item @code{no-hosts?} (default: @code{#f})
 When true, don't read the hostnames in /etc/hosts.
 
diff --git a/gnu/services/dns.scm b/gnu/services/dns.scm
index 043c34599c..532e20e38a 100644
--- a/gnu/services/dns.scm
+++ b/gnu/services/dns.scm
@@ -731,6 +731,8 @@ (define-record-type* <dnsmasq-configuration>
   dnsmasq-configuration?
   (package          dnsmasq-configuration-package
                     (default dnsmasq))  ;file-like
+  (provision        dnsmasq-provision
+                    (default '(dnsmasq)))
   (no-hosts?        dnsmasq-configuration-no-hosts?
                     (default #f))       ;boolean
   (port             dnsmasq-configuration-port
@@ -802,7 +804,7 @@ (define (dnsmasq-shepherd-service config)
      tftp-lowercase? tftp-port-range
      tftp-root tftp-unique-root extra-options)
     (shepherd-service
-     (provision '(dnsmasq))
+     (provision (dnsmasq-provision config))
      (requirement '(networking))
      (documentation "Run the dnsmasq DNS server.")
      (start #~(make-forkexec-constructor

base-commit: 831b94a1efcea8f793afc949b5123a6235c9bb1a
-- 
2.47.1