old_contents: """
  MacroecoDesktop script for making standalone executable
  """
  
  from macroeco import desktop
  desktop()
  
new_contents: """
  MacroecoDesktop script for making standalone executable
  """
  
  import sys as _sys
  from macroeco import desktop
  
  if len(_sys.argv) > 1:
      desktop(_sys.argv[1])
  else:
      desktop()
  
subject: Allow compiled OS X app to take parameter file as input on command line