{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    fenix = {
      url = "github:nix-community/fenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    crane = {
      url = "github:ipetkov/crane";
    };
  };
  outputs = {
    self,
    nixpkgs,
    flake-utils,
    fenix,
    crane,
  }:
    flake-utils.lib.eachDefaultSystem
    (
      system: let
        overlays = [fenix.overlays.default];
        pkgs = import nixpkgs {
          inherit system overlays;
        };
        craneLib = crane.mkLib pkgs;
        commonArgs = {
          src = craneLib.cleanCargoSource ./.;
          strictDeps = true;

          nativeBuildInputs = with pkgs; [pkg-config cmake];
          buildInputs = with pkgs;
            [
              openssl
              zlib-ng
            ]
            ++ lib.optionals stdenv.isDarwin [
              libiconv
            ];
        };
      in
        with pkgs; {
          devShells.default = mkShell {
            buildInputs = [
              pkgs.fenix.stable.completeToolchain
              pkg-config
              openssl
            ];
          };
          packages.default = craneLib.buildPackage (commonArgs
            // {
              cargoArtifacts = craneLib.buildDepsOnly commonArgs;
            });
          formatter = alejandra;
        }
    )
    // {
      nixosModules.default = {config, lib, pkgs, system, ...}: {
          options.services.smo-server = {
            enable = lib.mkEnableOption "a game server for Super Mario Odyssey Online";
            user = lib.mkOption {
              type = lib.types.string;
              description = "The user to start the server with";
            };
            enableFaker = lib.mkOption {
              type = lib.types.bool;
              default = false;
              example = true;
              description = "Whether to enable the test bot for solo development.";
            };
            tcpPort = lib.mkOption {
              type = lib.types.port;
              default = 1027;
              description = "The TCP port to host the server on";
            };
            udpPort = lib.mkOption {
              type = lib.types.port;
              default = 1027;
              description = "The UDP port to host the server on";
            };
            proximity = {
              type = lib.types.attrs;
              port = lib.mkOption {
                type = lib.types.port;
                example = 4433;
                description = "The UDP port to host the proximity chat server on";
              };
              certPath = lib.mkOption {
                type = lib.types.path;
                example = "cert.pem";
                description = "The certificate used for encrypting the WebTransport stream";
              };
              keyPath = lib.mkOption {
                type = lib.types.path;
                example = "cert.pem";
                description = "The certificate used for encrypting the WebTransport stream";
              };
            };
          };
          config = lib.mkIf config.services.smo-server.enable {
            systemd.services.smo-server = with config.services.smo-server; {
              wantedBy = ["multi-user.target"];
              after = ["network.target"];
              description = "Start smo-server";
              serviceConfig = {
                WorkingDirectory = "${self.packages.${system}.default.outPath}";
                Type = "simple";
                ExecStart = let
                  proxRes = 5;
                in ''${self.packages.${system}.default.outPath}/bin/smo-server -t ${tcpPort} -u ${udpPort}'';
              };
            };
          };
        };
    };
}