Subject: [PATCH v4 06/10] scripts: Make boot-parameters label include generation number and time.

From: Danny Milosavljevic <[email-masked]>
Date: Fri, 21 Apr 2017 14:37:10 +0200

* guix/scripts/system.scm (system->boot-parameters): Make label include
generation number and time.
---
 guix/scripts/system.scm | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/guix/scripts/system.scm b/guix/scripts/system.scm
index b278b6683..5e4e0df20 100644
--- a/guix/scripts/system.scm
+++ b/guix/scripts/system.scm
@@ -369,8 +369,13 @@ it atomically, and then run OS's activation script."
 NUMBERS, which is a list of generation numbers."
   (define (system->boot-parameters system number time)
     (unless-file-not-found
-     (let* ((params           (read-boot-parameters-file system)))
-       params)))
+     (let* ((params           (read-boot-parameters-file system))
+            (label            (boot-parameters-label params)))
+       (boot-parameters
+         (inherit params)
+         (label (string-append label " (#"
+                               (number->string number) ", "
+                               (seconds->string time) ")"))))))
   (let* ((systems (map (cut generation-file-name profile <>)
                        numbers))
          (times   (map (lambda (system)