{
  description = "Description for the project";

  inputs = {
    flake-parts.url = "github:hercules-ci/flake-parts";
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
  };

  outputs = inputs @ {flake-parts, ...}:
    flake-parts.lib.mkFlake {inherit inputs;} {
      imports = [
        # To import an internal flake module: ./other.nix
        # To import an external flake module:
        #   1. Add foo to inputs
        #   2. Add foo as a parameter to the outputs function
        #   3. Add here: foo.flakeModule
      ];
      systems = ["x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin"];
      perSystem = {
        config,
        self',
        inputs',
        pkgs,
        system,
        ...
      }: {
        # Per-system attributes can be defined here. The self' and inputs'
        # module parameters provide easy access to attributes of the same
        # system.

        packages.default = pkgs.stdenv.mkDerivation {
          name = "a5";
          src = ./.;
          buildPhase = ''
            cc main.c funktionen/*.c -o main.out
          '';
          installPhase = ''
            mkdir -p $out/bin/
            mv main.out $out/bin/
          '';
          meta = {
            mainProgram = "main.out";
          };
        };
      };
      flake = {
        # The usual flake attributes can be defined here, including system-
        # agnostic ones like nixosModule and system-enumerating ones, although
        # those are more easily expressed in perSystem.
      };
    };
}