{
  outputs = {
    self,
    nixpkgs,
    ...
  } @ inputs:
  let
    forSystems = systems: f: nixpkgs.lib.genAttrs systems (system: f rec {
      inherit system;
      pkgs = nixpkgs.legacyPackages.${system};
      lib  = nixpkgs.legacyPackages.${system}.lib;
    });
    forAllSystems = forSystems [
      "x86_64-linux"
      "aarch64-linux"
    ];
  in {
    devShells = forAllSystems ({ pkgs, ...}: {
      default = pkgs.mkShell {
        packages = with pkgs; [
          remote-exec
          (python3.withPackages (ps: with ps; [
            typer
          ]))
        ];
      };
    });
  };
}