Use jackett packge from unstable to work around faulty test

config/hosts/torrent/jackett.nix

@@ -1,6 +1,8 @@
-{ ... }:
+{ nixpkgs-unstable, ... }:
 {
   services.jackett = {
     enable = true;
+    # use package from unstable to work around faulty test in older jackett version
+    package = nixpkgs-unstable.legacyPackages."x86_64-linux".jackett;
   };
 }