@@ -0,0 +16,4 @@
+    ;
+
+  config = (import ./.) pkgs.lib;
+  failed = builtins.map (x: "- ${x.message}") (builtins.filter (x: !x.assertion) config.assertions);

@@ -0,0 +22,4 @@
+  throw ''
+
+    Failed assertions:
+    ${builtins.concatStringsSep "\n" failed}