old_contents: """
  Implicit variables; perhaps in the future this will also include some implicit
  rules, at least match-anything cancellation rules.
  """
  
  variables = {
      'RM': 'rm -f',
      '.LIBPATTERNS': 'lib%.so lib%.a',
      }
  
new_contents: """
  Implicit variables; perhaps in the future this will also include some implicit
  rules, at least match-anything cancellation rules.
  """
  
  variables = {
      'RM': 'rm -f',
      '.LIBPATTERNS': 'lib%.so lib%.a',
      '.PYMAKE': '1',
      }
  
subject: Set .PYMAKE so we can distinguish pymake from gmake