# Copyright (C) 2015 Red Hat, Inc.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions of
# the GNU General Public License v.2, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY expressed or implied, including the implied warranties of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details. You should have received a copy of the
# GNU General Public License along with this program; if not, write to the
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
# source code or documentation are not subject to the GNU General Public
# License and may only be used or replicated with the express permission of
# Red Hat, Inc.
"""A plugin that lists installed packages that are obsolted by any available package"""
from dnf.i18n import _
import dnf
import dnf.cli
# If you only plan to create a new dnf subcommand in a plugin
# you can use @dnf.plugin.register_command decorator instead of creating
# a Plugin class which only registers the command
# (for full-fledged Plugin class see examples/install_plugin.py)
@dnf.plugin.register_command
class Command(dnf.cli.Command):
"""A command that lists packages installed on the system that are
obsoleted by packages in any known repository."""
# An alias is needed to invoke the command from command line.
aliases = ['foo'] # <-- SET YOUR ALIAS HERE.
@staticmethod
def set_argparser(parser):
parser.add_argument("package", nargs='*', metavar=_('PACKAGE'))
def configure(self):
"""Setup the demands."""
# Repositories serve as sources of information about packages.
self.cli.demands.available_repos = True
# A sack is needed for querying.
self.cli.demands.sack_activation = True
def run(self):
"""Run the command."""
obs_tuples = []
# A query matches all available packages
q = self.base.sack.query()
if not self.opts.package:
# Narrow down query to match only installed packages
inst = q.installed()
# A dictionary containing list of obsoleted packages
for new in q.filter(obsoletes=inst):
obs_reldeps = new.obsoletes
obsoleted = inst.filter(provides=obs_reldeps).run()
obs_tuples.extend([(new, old) for old in obsoleted])
else:
for pkg_spec in self.opts.package:
# A subject serves for parsing package format from user input
subj = dnf.subject.Subject(pkg_spec)
# A query restricted to installed packages matching given subject
inst = subj.get_best_query(self.base.sack).installed()
for new in q.filter(obsoletes=inst):
obs_reldeps = new.obsoletes
obsoleted = inst.filter(provides=obs_reldeps).run()
obs_tuples.extend([(new, old) for old in obsoleted])
if not obs_tuples:
raise dnf.exceptions.Error('No matching Packages to list')
for (new, old) in obs_tuples:
print('%s.%s obsoletes %s.%s' %
(new.name, new.arch, old.name, old.arch))