{
  inputs.nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";

  outputs = {
    self,
    nixpkgs,
  }: let
    # Compose a flake for multiple systems directly. More systems, e.g. aarch64-darwin
    # can be supported by adding them to the systems list.
    systems = ["x86_64-linux" "aarch64-linux"];
    forEachSystem = nixpkgs.lib.genAttrs systems;
    pkgsForEach = nixpkgs.legacyPackages;
  in {
    packages = forEachSystem (system: {
      # Add a discorss package, and alias default package to it.
      # This will allow 'nix run .', which calls the default package.
      default = self.packages.${system}.discorss;
      discorss = pkgsForEach.${system}.callPackage ./nix/package.nix {};
    });

    devShells = forEachSystem (system: {
      default = pkgsForEach.${system}.mkShellNoCC {
        packages = [
          # Add the Discorss package to the shell
          self.packages.${system}.discorss

          # Add the *dependencies* of the Discorss package to the shell
          # so that it can be used to hack on the script itself.
          self.packages.${system}.discorss.propagatedBuildInputs
        ];
      };
    });
  };
}