firefox: take makeBinaryWrapper from buildPackages

{ stdenv, lib, makeDesktopItem, makeWrapper, makeBinaryWrapper, lndir, config

, buildPackages

, jq, xdg-utils, writeText

## various stuff that can be plugged in

          # Symbolic link: wrap the link's target.

          oldExe="$(readlink -v --canonicalize-existing "$executablePath")"

          rm "$executablePath"

        elif wrapperCmd=$(${makeBinaryWrapper.extractCmd} "$executablePath"); [[ $wrapperCmd ]]; then

        elif wrapperCmd=$(${buildPackages.makeBinaryWrapper.extractCmd} "$executablePath"); [[ $wrapperCmd ]]; then

          # If the executable is a binary wrapper, we need to update its target to

          # point to $out, but we can't just edit the binary in-place because of length

          # issues. So we extract the command used to create the wrapper and add the