{ inputs = { nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable"; flake-utils.url = "github:numtide/flake-utils"; }; outputs = { self, nixpkgs, flake-utils, }: flake-utils.lib.eachDefaultSystem ( system: let pkgs = nixpkgs.legacyPackages.${system}; in { devShells.default = pkgs.mkShell { packages = with pkgs; [ go_1_22 gopls go-tools nixfmt-rfc-style ]; }; } ); }