{ perSystem = { pkgs, config, ... }: { devShells.default = pkgs.mkShell { packages = with pkgs; [ rustfmt clippy ]; RUST_LOG = "debug"; LD_LIBRARY_PATH = builtins.concatStringsSep ":" [ "${pkgs.libX11}/lib" "${pkgs.libXi}/lib" "${pkgs.libGL}/lib" "${pkgs.libxkbcommon}/lib" ]; inputsFrom = [ (config.packages.default) ]; }; }; }