{
  description = "Python flake";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
  };

  outputs = { self, nixpkgs }:
  let
    systems = [ "x86_64-linux" "aarch64-linux" ];
    forAllSystems = nixpkgs.lib.genAttrs systems;
    pkgsForEach = nixpkgs.legacyPackages;
  in
  {
    packages = forAllSystems (system: {
      default = pkgsForEach.${system}.callPackage ./nix/package.nix { };
      python-app = self.packages.${system}.default;
    });

    devShells = forAllSystems (system: {
      default = pkgsForEach.${system}.callPackage ./nix/shell.nix {
        inherit (self.packages.${system}) python-app;
      }; 
    });
  };
}