{
  description = "Development environment flake";

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

  outputs = { self, nixpkgs }: nixpkgs.lib.foldAttrs (item: acc: item // acc) { } (map
    (system: with nixpkgs.legacyPackages."${system}"; {
      devShells."${system}".default = mkShell {
        nativeBuildInputs = [
          nodejs_20
          tmux
        ];
      };
    }) [ "x86_64-linux" "aarch64-linux" ]);
}