old_contents: import pkg_resources
  
  ENTRY_POINT = 'fanstatic.libraries'
  
  class LibraryRegistry(dict):
      """A dictionary-like registry of libraries.
  
      This is a dictionary that mains libraries. A value is
      a :py:class:`Library` instance, and a key is its
      library ``name``.
  
      Normally there is only a single global LibraryRegistry,
      obtained by calling ``get_library_registry()``.
      
      :param libraries: a sequence of libraries
      """    
      def __init__(self, libraries):
          if libraries is None:
              return
          for library in libraries:
              self[library.name] = library
  
      def add(self, library):
          """Add a Library instance to the registry.
  
          :param add: add a library to the registry.
          """
          self[library.name] = library
  
  def get_libraries_from_entry_points():
      libraries = []
      for entry_point in pkg_resources.iter_entry_points(ENTRY_POINT):
          libraries.append(entry_point.load())
      return libraries
  
  _library_registry = None
  
  def get_library_registry():
      '''Get the global :py:class:`LibraryRegistry`.
  
      It gets filled with the libraries registered using the fanstatic
      entry point.
      
      You can also add libraries to it later.
      '''
      global _library_registry
      if _library_registry is not None:
          return _library_registry
      _library_registry = LibraryRegistry(get_libraries_from_entry_points())
      return _library_registry
  
  
new_contents: import pkg_resources
  
  ENTRY_POINT = 'fanstatic.libraries'
  
  class LibraryRegistry(dict):
      """A dictionary-like registry of libraries.
  
      This is a dictionary that mains libraries. A value is
      a :py:class:`Library` instance, and a key is its
      library ``name``.
  
      Normally there is only a single global LibraryRegistry,
      obtained by calling ``get_library_registry()``.
      
      :param libraries: a sequence of libraries
      """    
      def __init__(self, libraries):
          for library in libraries:
              self[library.name] = library
  
      def add(self, library):
          """Add a Library instance to the registry.
  
          :param add: add a library to the registry.
          """
          self[library.name] = library
  
  def get_libraries_from_entry_points():
      libraries = []
      for entry_point in pkg_resources.iter_entry_points(ENTRY_POINT):
          libraries.append(entry_point.load())
      return libraries
  
  _library_registry = None
  
  def get_library_registry():
      '''Get the global :py:class:`LibraryRegistry`.
  
      It gets filled with the libraries registered using the fanstatic
      entry point.
      
      You can also add libraries to it later.
      '''
      global _library_registry
      if _library_registry is not None:
          return _library_registry
      _library_registry = LibraryRegistry(get_libraries_from_entry_points())
      return _library_registry
  
  
subject: Remove some code that wasn't in use anymore.