code: def _opdef_for_opspec(opspec):
      import os
      from . import run_impl
  
      try:
          return run_impl.opdef_for_opspec(opspec)
      except (Exception, SystemExit):
          if os.getenv("_GUILD_COMPLETE_DEBUG") == "1":
              raise
          return None
  
imports: import click
  from guild import click_util
  from .None import ac_support
  from .None import remote_support
label_desc: Use image node_id 8 for calling a global function with example usage: _opdef_for_opspec(opspec) and returns: run_impl, None