docs: def match(self, package):
          """Match ``package`` with the requirement.
  
          :param package: Package to test with the requirement.
          :type package: package expression string or :class:`Package`
          :returns: ``True`` if ``package`` satisfies the requirement.
          :rtype: bool
  
          """
          if isinstance(package, basestring):
              from .packages import Package
              package = Package.parse(package)
  
          if self.name != package.name:
              return False
  
          if self.version_constraints and \
                  package.version not in self.version_constraints:
              return False
  
          if self.build_options:
              if package.build_options:
                  if self.build_options - package.build_options:
                      return False
                  else:
                      return True
              else:
                  return False
          else:
              return True