{
  den.aspects.fish = {
    nixos = { pkgs, ...}: {
      programs.fish.shellAliases = {
        fetch = "fastfetch --file ~/nix/nix.ans";

        box = "ssh box.bug.tools";
        unbox = "sh -c 'ssh -N -L \"$1\":0.0.0.0:\"$1\" box.bug.tools &' --";
        rebox = "sh -c 'fuser -k \"$1\"/tcp' --";
        dock = "sh -c 'ssh -N -D \"$1\" box.bug.tools &' --";

        pico = "ssh pico.sh";

        ns = "nh os switch ~/nix --impure -H (hostname)";
        rebuild = "ns";
      };

      environment.systemPackages = with pkgs.fishPlugins; [
        done
        sponge
      ];
    };
  };
}