krunner-pass: fix cmake configuration

pkgs/tools/security/krunner-pass/default.nix

@@ -42,8 +42,12 @@ mkDerivation rec {
     ''-DNIXPKGS_PASS=\"${lib.getBin pass}/bin/pass\"''
   ];
 
-  # there are *lots* of pointless warnings in v1.3.0
-  cmakeFlags = [ "-Wno-dev" ];
+  cmakeFlags = [
+    # there are *lots* of pointless warnings in v1.3.0
+    "-Wno-dev"
+    # required for kf5auth to work correctly
+    "-DCMAKE_POLICY_DEFAULT_CMP0012=NEW"
+  ];
 
   meta = with lib; {
     description = "Integrates krunner with pass the unix standard password manager (https://www.passwordstore.org/)";