{
  description = "Tilde Friends is a platform for making, running, and sharing web applications.";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.11";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = {
    self,
    nixpkgs,
    flake-utils,
  }:
    flake-utils.lib.eachDefaultSystem (system: let
        pkgs = import nixpkgs {
          inherit system;
        };
      in rec
      {
        # Nix formatter, run using `$ nix fmt`
        formatter = pkgs.alejandra;

        # Exports the tildefriends package
        # Build with `$ nix build`
        packages.default = pkgs.callPackage ./default.nix {};

        # Creates a shell with the necessary dependencies
        # Enter using `$ nix develop`
        devShell = pkgs.mkShell {
          buildInputs = with pkgs; [
            openssl
            llvmPackages_17.clang-unwrapped
            unzip
            doxygen
            graphviz
          ];
        };

        nixosModules.default = {
          config,
          lib,
          ...
        }: let
          # Shorter name to access final settings a
          # user of hello.nix module HAS ACTUALLY SET.
          # cfg is a typical convention.
          cfg = config.services.tildefriends;
        in {
          options.services.tildefriends = {
            enable = lib.mkEnableOption "Enable Tilde Friends";
          };

          config = lib.mkIf cfg.enable {
            systemd.services.tildefriends = {
              wantedBy = ["multi-user.target"];
              serviceConfig.ExecStart = "${pkgs.tildefriends}/bin/tildefriends";
            };
          };
        };
      });
}