~ruther/guix-local: refresh: Bail out when asked for a nonexistent updater.

fba607b12919b254d75b1e7e9223d712fe2ac32c — Ludovic Courtès 10 years ago e3cc793

refresh: Bail out when asked for a nonexistent updater.

* guix/scripts/refresh.scm (lookup-updater): Call 'leave' when 'find'
returns #f.

patch browse .tar.gz

1 files changed, 4 insertions(+), 3 deletions(-)

M guix/scripts/refresh.scm

M guix/scripts/refresh.scm => guix/scripts/refresh.scm +4 -3

@@ 197,9 197,10 @@ unavailable optional dependencies such as Guile-JSON."
 
 (define (lookup-updater name)
   "Return the updater called NAME."
-  (find (lambda (updater)
-          (eq? name (upstream-updater-name updater)))
-        %updaters))
+  (or (find (lambda (updater)
+              (eq? name (upstream-updater-name updater)))
+            %updaters)
+      (leave (_ "~a: no such updater~%") name)))
 
 (define (list-updaters-and-exit)
   "Display available updaters and exit."