(jobs mcron-configuration-jobs ;list of <mcron-job>
(default '())))
-(define (job-file job)
- (scheme-file "mcron-job" job))
+(define (job-files mcron jobs)
+ "Return a list of file-like object for JOBS, a list of gexps."
+ (define (validated-file job)
+ ;; This procedure behaves like 'scheme-file' but it runs 'mcron
+ ;; --schedule' to detect any error in JOB.
+ (computed-file "mcron-job"
+ (with-imported-modules '((guix build utils))
+ #~(begin
+ (use-modules (guix build utils))
+
+ (call-with-output-file "job"
+ (lambda (port)
+ (write '#$job port)))
+
+ (invoke #+(file-append mcron "/bin/mcron")
+ "--schedule=20" "job")
+ (copy-file "job" #$output)))
+ #:options '(#:env-vars (("COLUMNS" . "150")))))
+
+ (map validated-file jobs))
(define (shepherd-schedule-action mcron files)
"Return a Shepherd action that runs MCRON with '--schedule' for the given
(($ <mcron-configuration> mcron ()) ;nothing to do!
'())
(($ <mcron-configuration> mcron jobs)
- (let ((files (map job-file jobs)))
+ (let ((files (job-files mcron jobs)))
(list (shepherd-service
(provision '(mcron))
(requirement '(user-processes))