so I unset the kernel like you said to do in that issue, but the values conflict in modules, so how do I resolve that?

       error: The option `boot.kernelPackages' is defined multiple times while it's expected to be unique.

       Definition values:
       - In `/nix/store/b15p9l85pzy934qvdxvq149wm2771dy8-source/modules/devices/steamdeck/kernel.nix'
       - In `/nix/store/h6f2qc39h0nkjyfrivi1y9gk9sbyhzf6-source/nixos/modules/tasks/filesystems/bcachefs.nix'
       Use `lib.mkForce value` or `lib.mkDefault value` to change the priority on any of these definitions.