{
  description = "A very basic flake";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
    devenv.url = "github:cachix/devenv";
  };
  outputs = {
    self,
    nixpkgs,
    devenv,
    systems,
    ...
  } @ inputs: let
    forEachSystem = nixpkgs.lib.genAttrs (import systems);
  in {
    devShells = forEachSystem (system: let
      pkgs = nixpkgs.legacyPackages.${system};
    in {
      default = devenv.lib.mkShell {
        inherit inputs pkgs;
        modules = [
          ({
            pkgs,
            config,
            ...
          }: {
            languages.haskell.enable = true;
          })
        ];
      };
    });
  };
}