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