Merge pull request NixOS#176477 from zhaofengli/config-missing-undecl…

…ared pkgs/config.nix: Fix missing attribute when no config keys are undeclared
wkral · Jun 6, 2022 · 0642d00 · 0642d00
2 parents 5a1cc60 + 87de4db
commit 0642d00
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pkgs/top-level/config.nix b/pkgs/top-level/config.nix
@@ -139,7 +139,7 @@ in {
 
   config = {
     warnings = lib.optionals config.warnUndeclaredOptions (
-      lib.mapAttrsToList (k: v: "undeclared Nixpkgs option set: config.${k}") config._undeclared
+      lib.mapAttrsToList (k: v: "undeclared Nixpkgs option set: config.${k}") config._undeclared or {}
     );
   };