old_contents: class protobuf(AutogenWig):
  	tarball_uri = 'https://github.com/google/protobuf/archive/v{RELEASE_VERSION}.tar.gz'
  	git_uri = 'https://github.com/google/protobuf'
  	last_release_version = '3.1.0'
  	supported_features = ['python']
  	
  	def switch_python_on(self):
  		self.after_install += ['cd python', S.python_setup_install]
  
new_contents: class protobuf(AutogenWig):
  	tarball_uri = 'https://github.com/google/protobuf/archive/v{RELEASE_VERSION}.tar.gz'
  	git_uri = 'https://github.com/google/protobuf'
  	last_release_version = '3.1.0'
  	supported_features = ['python']
  	dependencies = ['autoconf', 'automake', 'libtool']
  	
  	def switch_python_on(self):
  		self.after_install += ['cd python', S.python_setup_install]
  
subject: Update protobuf.py