function golang_rebuild_check() {
   # We test whether this is _empty_, so the default is to print something out;
   # if the caller wants silence, then they'll pass 1 (or anything, really),
   # and we won't print anything...
   local -r _silent_run="$1"
   local -r _orig_ifs="$IFS"
   local -r _installed_go_version="$(go version | awk '{print $3}')"
   local _func_rv=0
   local _go_binary_version=''
   local _go_binary_filename=''
   local _go_binary_portage_pkg=''
   local -A _invalid_go_pkgs
   local _line=''

   IFS=$'\n'
   for _line in $(go version /usr/bin /bin /sbin); do
      _go_binary_filename="$(echo "$_line" | awk '{print $1}' | sed -e 's;:$;;')"
      _go_binary_version="$(echo "$_line" | awk '{print $2}')"

      if [[ "$_go_binary_version" != "$_installed_go_version" ]]; then
         _go_binary_portage_pkg="$(equery b "$_go_binary_filename")"
         _func_rv=1

         if [[ -z "${_invalid_go_pkgs["$_go_binary_portage_pkg"]}" ]]; then
            if [[ -z "$_silent_run" ]]; then
               echo "Go binary/package mismatch: $_go_binary_portage_pkg ($_go_binary_version)" >&2
         fi
      fi

         _invalid_go_pkgs["$_go_binary_portage_pkg"]=1
      fi
   done
   IFS="$_orig_ifs"

   return $_func_rv
}