pkgs/config.nix: Fix missing attribute when no config keys are undeclared

2022-06-05 14:50:52 -07:00
parent e2de23b6db
commit 87de4db5e6
1 changed files with 1 additions and 1 deletions
--- 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 {}
    );
  };