{ inputs, den, ... }: {
  den.aspects.secrets.nixos = { ... }: {
    imports = [ inputs.sops-nix.nixosModules.sops ];

    sops = {
      defaultSopsFile = ../secrets/secrets.yaml;

      # NOTE: This thing gave me a huge headache to setup.
      # If you are ME from future, don't forget to place
      # your age keys here!
      age.keyFile = "/etc/sops/age/keys.txt";

      # Define secrets to be used.
      secrets = {
        # Literally the user password.
        "user-password" = {
          neededForUsers = true;
        };

        # SSH private key.
        "ssh-private-key" = {
          path = "/home/zoty/.ssh/id_ed25519";
          owner = "zoty";
          mode = "0400";
        };
      };
    };
  };
}