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system: Optionally limit the entries returned by profile-grub-entries. 

* guix/scripts/system.scm (profile-grub-entries): Add an optional parameter
which allows the caller to limit the number of returned grub entries.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Chris Marusich 2016-11-01 22:48:13 -07:00 committed by Ludovic Courtès
parent 45e39eee21
commit aff7280a0b
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GPG Key ID: 090B11993D9AEBB5
1 changed files with 5 additions and 4 deletions
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9
guix/scripts/system.scm
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@ -366,8 +366,10 @@ it atomically, and then run OS's activation script."
(date->string (time-utc->date time)
"~Y-~m-~d ~H:~M")))
(define* (profile-grub-entries #:optional (profile %system-profile))
"Return a list of 'menu-entry' for the generations of PROFILE."
(define* (profile-grub-entries #:optional (profile %system-profile)
(numbers (generation-numbers profile)))
"Return a list of 'menu-entry' for the generations of PROFILE specified by
NUMBERS, which is a list of generation numbers."
(define (system->grub-entry system number time)
(unless-file-not-found
(let* ((file (string-append system "/parameters"))
@ -395,8 +397,7 @@ it atomically, and then run OS's activation script."
kernel-arguments))
(initrd initrd)))))
(let* ((numbers (generation-numbers profile))
(systems (map (cut generation-file-name profile <>)
(let* ((systems (map (cut generation-file-name profile <>)
numbers))
(times (map (lambda (system)
(unless-file-not-found