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| -rw-r--r-- | doc/guix.texi | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index a826171f34..4eb5324b51 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -15919,7 +15919,8 @@ gexps to introduce job definitions that are passed to mcron (lambda () (execl (string-append #$findutils "/bin/updatedb") "updatedb" - "--prunepaths=/tmp /var/tmp /gnu/store")))) + "--prunepaths=/tmp /var/tmp /gnu/store")) + "updatedb")) (define garbage-collector-job ;; Collect garbage 5 minutes after midnight every day. @@ -15948,6 +15949,14 @@ gexps to introduce job definitions that are passed to mcron %base-services))) @end lisp +@quotation Tip +When providing the action of a job specification as a procedure, you +should provide an explicit name for the job via the optional 3rd +argument as done in the @code{updatedb-job} example above. Otherwise, +the job would appear as ``Lambda function'' in the output of +@command{herd schedule mcron}, which is not nearly descriptive enough! +@end quotation + For more complex jobs defined in Scheme where you need control over the top level, for instance to introduce a @code{use-modules} form, you can move your code to a separate program using the @code{program-file} procedure of the |