{ description = "Advent of Code 2023 repo"; inputs = { nixpkgs.url = "github:nixos/nixpkgs/nixos-23.11"; }; outputs = {nixpkgs, ...}: let system = "x86_64-linux"; pkgs = nixpkgs.legacyPackages.${system}; in { devShells.${system}.default = pkgs.mkShell { packages = with pkgs; [ kotlin kotlin-language-server ]; }; }; }