docs: def add_to_path(p):
      '''
          Adds a path to python paths and removes it after the 'with' block ends
      '''
      old_path = sys.path
      if p not in sys.path:
          sys.path = sys.path[:]
          sys.path.insert(0, p)
      try:
          yield
      finally:
          sys.path = old_path