zero/operating-systems/buer/shepherd-services.scm

45 lines
1.5 KiB
Scheme

(define-module (buer shepherd-services)
#:use-module (guix gexp)
#:use-module (gnu services shepherd)
#:use-module (shepherd service timer)
#:export (guix-gc snapshot-@home timer))
(define timer-trigger-action
(shepherd-action
(name 'trigger)
(procedure #~trigger-timer)
(documentation
"Trigger the action associated with @var{timer} as if it had reached its
next calendar event.")))
(define guix-gc
(shepherd-service
(provision '(guix-gc))
(modules '((shepherd service timer)))
(start #~(make-timer-constructor
(calendar-event #:days-of-month '(1 15))
(command '("guix" "gc" "--optimize" "--free-space=10G"))))
(stop #~(make-timer-destructor))
(actions (list timer-trigger-action))))
(define snapshot-@home
(shepherd-service
(provision '(snapshot-@home))
(modules '((shepherd service timer)))
(start #~(make-timer-constructor
(calendar-event #:days-of-month '(1 15))
(lambda ()
(let* ((btrfs "/run/current-system/profile/bin/btrfs")
(date (strftime "%Y-%m-%d" (localtime (current-time)))))
(system* btrfs "subvolume" "snapshot" "/home"
(string-append "/snapshots/home/" date))))))
(stop #~(make-timer-destructor))
(actions (list timer-trigger-action))))
(define timer
(shepherd-service
(provision '(timer))
(modules '((shepherd service timer)))
(free-form #~(timer-service))))