{ description = "General Flake"; inputs = { nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable"; }; outputs = {nixpkgs, ...}: let system = "x86_64-linux"; pkgs = nixpkgs.legacyPackages.${system}; in { devShells.${system}.default = pkgs.mkShell { packages = with pkgs; [ # fill here ]; }; }; }