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-rw-r--r--lib/generators.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/generators.nix b/lib/generators.nix
index 28b2e39bf6464..b77cca75010f9 100644
--- a/lib/generators.nix
+++ b/lib/generators.nix
@@ -378,7 +378,7 @@ rec {
 
     attr = let attrFilter = name: value: name != "_module" && value != null;
     in ind: x: libStr.concatStringsSep "\n" (lib.flatten (lib.mapAttrsToList
-      (name: value: lib.optional (attrFilter name value) [
+      (name: value: lib.optionals (attrFilter name value) [
       (key "\t${ind}" name)
       (expr "\t${ind}" value)
     ]) x));