old_contents: Package ('taglib', '1.6.3', sources = [
  	'http://developer.kde.org/~wheeler/files/src/%{name}-%{version}.tar.gz'
  ])
  
new_contents: class TaglibPackage (GitHubPackage):
  	def __init__ (self):		
  		GitHubPackage.__init__ (self, 'taglib', 'taglib', '1.9.1.99',
  			revision = '62ab41fa07bfe6456eafc7ffacbfa2043cba0668')
  
  	def build (self):
  		self.sh (
  			# Let's set a bunch of variables, to make cmake feel loved
  			'CMAKE_PREFIX_PATH=%{prefix}',
  			'CMAKE_LIBRARY_PATH=%{prefix}/lib',
  			'CMAKE_INSTALL_PREFIX=%{prefix}',
  
  			# build and install
  			'cmake -DCMAKE_INSTALL_PREFIX=%{prefix} . && make all install',
  			)
   
  TaglibPackage ()
  
subject: Update taglib to 1.9.1.99