code: def _script_source(run):
      if run.opref.pkg_type == "script":
          return run.opref.pkg_name
      return None
  
imports: import logging
  import os
  import re
  import subprocess
  from guild import cli
  from guild import click_util
  from guild import cmd_impl_support
  from guild import config
  from guild import run_util
  from guild import util
  from .None import remote_impl_support
  from .None import runs_impl
label_desc: Use image node_id 11 for calling a global function with example usage: _script_source(run) and returns: None, run