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-rw-r--r--guix/scripts/weather.scm5
1 files changed, 3 insertions, 2 deletions
diff --git a/guix/scripts/weather.scm b/guix/scripts/weather.scm
index eb76771452..475d989357 100644
--- a/guix/scripts/weather.scm
+++ b/guix/scripts/weather.scm
@@ -339,8 +339,9 @@ Report the availability of substitutes.\n"))
   "Load the manifest from FILE and return the list of packages it refers to."
   (let* ((user-module (make-user-module '((guix profiles) (gnu))))
          (manifest    (load* file user-module)))
-    (map manifest-entry-item
-         (manifest-transitive-entries manifest))))
+    (delete-duplicates (map manifest-entry-item
+                            (manifest-transitive-entries manifest))
+                       eq?)))
 
 
 ;;;