def remove_extras(self):
"""Try to remove packages that are installed on the live CD but not on
the installed system."""
#First remove normal live-desktop packages
ParentInstall.remove_extras(self)
#now take care of mythbuntu specifics
packages=set()
## system role
if 'Slave' in self.type or self.type == 'Frontend':
packages.add('mythtv-backend-master')
if 'Frontend' not in self.type:
packages.add('mythtv-frontend')
## services that are installed by default
for service in ['samba','openssh-server']:
if self.db.get('mythbuntu/' + service) == "false":
packages.add(service)
if len(packages) >= 0:
#recursively remove to make sure we get plugins and services that
#aren't necessary anymore
self.do_remove(packages,True)
