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services: nfs: Allow gss-service-type to be extended.

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* gnu/services/nfs.scm (gss-service-type): Rewrite using SERVICE-TYPE to add
ability to extend the service.
This commit is contained in:
Ricardo Wurmus 2020-01-03 18:16:13 +01:00
parent 2a23942e3f
commit a6bdca6b9b
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GPG key ID: 197A5888235FACAC
1 changed files with 29 additions and 16 deletions
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17
gnu/services/nfs.scm
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@ -136,8 +136,7 @@
(default nfs-utils)))
(define gss-service-type
(shepherd-service-type
'gss
(let ((proc
(lambda (config)
(define nfs-utils
(gss-configuration-gss config))
@ -156,6 +155,20 @@
(start #~(make-forkexec-constructor #$gss-command))
(stop #~(make-kill-destructor))))))
(service-type
(name 'gss)
(extensions
(list (service-extension shepherd-root-service-type
(compose list proc))))
;; We use the extensions feature to allow other services to automatically
;; configure and start this service. Only one value can be provided. We
;; override it with the value returned by the extending service.
(compose identity)
(extend (lambda (config values)
(match values
((first . rest) first)
(_ config))))
(default-value (gss-configuration)))))