{
  description = "An api to check when the ArmA reforger Dedicated Server needs updated";

  # Nixpkgs / NixOS version to use.
  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";

  outputs =
    { self, nixpkgs }:
    let
      # System types to support.
      supportedSystems = [
        "x86_64-linux"
      ];

      # Helper function to generate an attrset '{ x86_64-linux = f "x86_64-linux"; ... }'.
      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;

      # Nixpkgs instantiated for supported system types.
      nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });

    in
    {

      # Provide some binary packages for selected system types by mapping over each system architecture.
      packages = forAllSystems (
        system:
        let
	  # Set pkgs = the correct version for a given architecture.
          pkgs = nixpkgsFor.${system};
        in
        {
          reforger-update-api = pkgs.callPackage ./package.nix { };
        }
      );

      # Add dependencies that are only needed for development, this also allows for nix develop command to launch a devshell
      devShells = forAllSystems (
        system:
        let
          pkgs = nixpkgsFor.${system};
        in
        {
          default = pkgs.mkShell {
            buildInputs = with pkgs; [
              go
              gopls
              gotools
              go-tools
            ];
          };
        }
      );

      # The default package for 'nix build'. This makes sense if the
      # flake provides only one package or there is a clear "main"
      # package.
      defaultPackage = forAllSystems (system: self.packages.${system}.reforger-update-api);
    };
}