/usr/share/pyshared/germinate/scripts/germinate_update_metapackage.py is in python-germinate 2.8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Canonical Ltd.
# Copyright (C) 2006 Gustavo Franco
#
# This file is part of Germinate.
#
# Germinate is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any
# later version.
#
# Germinate is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty 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 Germinate; see the file COPYING. If not, write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
# 02110-1301, USA.
# TODO:
# - Exclude essential packages from dependencies
from __future__ import print_function
import sys
import re
import os
import optparse
import logging
try:
# >= 3.0
from configparser import NoOptionError, NoSectionError
if (sys.version_info[0] < 3 or
(sys.version_info[0] == 3 and sys.version_info[1] < 2)):
# < 3.2
from configparser import SafeConfigParser
else:
# >= 3.2
from configparser import ConfigParser as SafeConfigParser
except ImportError:
# < 3.0
from ConfigParser import NoOptionError, NoSectionError, SafeConfigParser
import subprocess
from germinate.germinator import Germinator
import germinate.archive
from germinate.log import germinate_logging
from germinate.seeds import SeedError, SeedStructure
import germinate.version
__pychecker__ = 'maxlocals=80'
def error_exit(message):
print("%s: %s" % (sys.argv[0], message), file=sys.stderr)
sys.exit(1)
def parse_options(argv):
description = '''\
Update metapackage lists for distribution 'dist' as defined in
update.cfg.'''
parser = optparse.OptionParser(
prog='germinate-update-metapackage',
usage='%prog [options] [dist]',
version='%prog ' + germinate.version.VERSION,
description=description)
parser.add_option('-o', '--output-directory', dest='outdir',
default='.', metavar='DIR',
help='output in specific directory')
parser.add_option('--nodch', dest='nodch', action='store_true',
default=False,
help="don't modify debian/changelog")
parser.add_option('--bzr', dest='bzr', action='store_true', default=False,
help='fetch seeds using bzr (requires bzr to be '
'installed)')
return parser.parse_args(argv[1:])
def main(argv):
options, args = parse_options(argv)
if not os.path.exists('debian/control'):
error_exit('must be run from the top level of a source package')
this_source = None
with open('debian/control') as control:
for line in control:
if line.startswith('Source:'):
this_source = line[7:].strip()
break
elif line == '':
break
if this_source is None:
error_exit('cannot find Source: in debian/control')
if not this_source.endswith('-meta'):
error_exit('source package name must be *-meta')
metapackage = this_source[:-5]
print("[info] Initialising %s-* package lists update..." % metapackage)
config = SafeConfigParser()
with open('update.cfg') as config_file:
try:
# >= 3.2
config.read_file(config_file)
except AttributeError:
# < 3.2
config.readfp(config_file)
if len(args) > 0:
dist = args[0]
else:
dist = config.get('DEFAULT', 'dist')
seeds = config.get(dist, 'seeds').split()
try:
output_seeds = config.get(dist, 'output_seeds').split()
except NoOptionError:
output_seeds = list(seeds)
architectures = config.get(dist, 'architectures').split()
try:
archive_base_default = config.get(dist, 'archive_base/default')
archive_base_default = re.split(r'[, ]+', archive_base_default)
except (NoSectionError, NoOptionError):
archive_base_default = None
archive_base = {}
for arch in architectures:
try:
archive_base[arch] = config.get(dist, 'archive_base/%s' % arch)
archive_base[arch] = re.split(r'[, ]+', archive_base[arch])
except (NoSectionError, NoOptionError):
if archive_base_default is not None:
archive_base[arch] = archive_base_default
else:
error_exit('no archive_base configured for %s' % arch)
if options.bzr and config.has_option("%s/bzr" % dist, 'seed_base'):
seed_base = config.get("%s/bzr" % dist, 'seed_base')
else:
seed_base = config.get(dist, 'seed_base')
seed_base = re.split(r'[, ]+', seed_base)
if options.bzr and config.has_option("%s/bzr" % dist, 'seed_dist'):
seed_dist = config.get("%s/bzr" % dist, 'seed_dist')
elif config.has_option(dist, 'seed_dist'):
seed_dist = config.get(dist, 'seed_dist')
else:
seed_dist = dist
components = config.get(dist, 'components').split()
def seed_packages(germinator_method, structure, seed_name):
if config.has_option(dist, "seed_map/%s" % seed_name):
mapped_seeds = config.get(dist, "seed_map/%s" % seed_name).split()
else:
mapped_seeds = []
task_seeds_re = re.compile('^Task-Seeds:\s*(.*)', re.I)
with structure[seed_name] as seed:
for line in seed:
task_seeds_match = task_seeds_re.match(line)
if task_seeds_match is not None:
mapped_seeds = task_seeds_match.group(1).split()
break
if seed_name not in mapped_seeds:
mapped_seeds.append(seed_name)
packages = []
for mapped_seed in mapped_seeds:
packages.extend(germinator_method(structure, mapped_seed))
return packages
def metapackage_name(structure, seed_name):
if config.has_option(dist, "metapackage_map/%s" % seed_name):
return config.get(dist, "metapackage_map/%s" % seed_name)
else:
task_meta_re = re.compile('^Task-Metapackage:\s*(.*)', re.I)
with structure[seed_name] as seed:
for line in seed:
task_meta_match = task_meta_re.match(line)
if task_meta_match is not None:
return task_meta_match.group(1)
return "%s-%s" % (metapackage, seed_name)
debootstrap_version_file = 'debootstrap-version'
def get_debootstrap_version():
version_cmd = subprocess.Popen(
['dpkg-query', '-W', '--showformat', '${Version}', 'debootstrap'],
stdout=subprocess.PIPE, universal_newlines=True)
version, _ = version_cmd.communicate()
if not version:
error_exit('debootstrap does not appear to be installed')
return version
def debootstrap_packages(arch):
env = dict(os.environ)
if 'PATH' in env:
env['PATH'] = '/usr/sbin:/sbin:%s' % env['PATH']
else:
env['PATH'] = '/usr/sbin:/sbin:/usr/bin:/bin'
debootstrap = subprocess.Popen(
['debootstrap', '--arch', arch,
'--components', ','.join(components),
'--print-debs', dist, 'debootstrap-dir', archive_base[arch][0]],
stdout=subprocess.PIPE, env=env, stderr=subprocess.PIPE,
universal_newlines=True)
(debootstrap_stdout, debootstrap_stderr) = debootstrap.communicate()
if debootstrap.returncode != 0:
error_exit('Unable to retrieve package list from debootstrap; stdout: %s\nstderr: %s' % (debootstrap_stdout, debootstrap_stderr))
# sometimes debootstrap gives empty packages / multiple separators
packages = [pkg for pkg in debootstrap_stdout.split() if pkg]
return sorted(packages)
def check_debootstrap_version():
if os.path.exists(debootstrap_version_file):
with open(debootstrap_version_file) as debootstrap:
old_debootstrap_version = debootstrap.read().strip()
debootstrap_version = get_debootstrap_version()
failed = subprocess.call(
['dpkg', '--compare-versions',
debootstrap_version, 'ge', old_debootstrap_version])
if failed:
error_exit('Installed debootstrap is older than in the previous version! (%s < %s)' % (
debootstrap_version,
old_debootstrap_version
))
def update_debootstrap_version():
with open(debootstrap_version_file, 'w') as debootstrap:
debootstrap.write(get_debootstrap_version() + '\n')
def format_changes(items):
by_arch = {}
for (pkg, arch) in items:
by_arch.setdefault(pkg, [])
by_arch[pkg].append(arch)
all_pkgs = sorted(by_arch.keys())
chunks = []
for pkg in all_pkgs:
arches = by_arch[pkg]
if set(architectures) - set(arches):
# only some architectures
chunks.append('%s [%s]' % (pkg, ' '.join(sorted(arches))))
else:
# all architectures
chunks.append(pkg)
return ', '.join(chunks)
germinate_logging(logging.DEBUG)
check_debootstrap_version()
additions = {}
removals = {}
moves = {}
metapackage_map = {}
for architecture in architectures:
print("[%s] Downloading available package lists..." % architecture)
germinator = Germinator(architecture)
archive = germinate.archive.TagFile(
[dist], components, architecture,
archive_base[architecture], source_mirrors=archive_base_default,
cleanup=True)
germinator.parse_archive(archive)
debootstrap_base = set(debootstrap_packages(architecture))
print("[%s] Loading seed lists..." % architecture)
try:
structure = SeedStructure(seed_dist, seed_base, options.bzr)
germinator.plant_seeds(structure, seeds=seeds)
except SeedError:
sys.exit(1)
print("[%s] Merging seeds with available package lists..." %
architecture)
for seed_name in output_seeds:
meta_name = metapackage_name(structure, seed_name)
metapackage_map[seed_name] = meta_name
output_filename = os.path.join(
options.outdir, '%s-%s' % (seed_name, architecture))
old_list = None
if os.path.exists(output_filename):
with open(output_filename) as output:
old_list = set(map(str.strip, output.readlines()))
os.rename(output_filename, output_filename + '.old')
# work on the depends
new_list = []
packages = seed_packages(germinator.get_seed_entries,
structure, seed_name)
for package in packages:
if package == meta_name:
print("%s/%s: Skipping package %s (metapackage)" %
(seed_name, architecture, package))
elif seed_name == 'minimal' and package not in debootstrap_base:
print("%s/%s: Skipping package %s (package not in "
"debootstrap)" % (seed_name, architecture, package))
elif germinator.is_essential(package):
print("%s/%s: Skipping package %s (essential)" %
(seed_name, architecture, package))
else:
new_list.append(package)
new_list.sort()
with open(output_filename, 'w') as output:
for package in new_list:
output.write(package)
output.write('\n')
# work on the recommends
old_recommends_list = None
new_recommends_list = []
packages = seed_packages(germinator.get_seed_recommends_entries,
structure, seed_name)
for package in packages:
if package == meta_name:
print("%s/%s: Skipping package %s (metapackage)" %
(seed_name, architecture, package))
continue
if seed_name == 'minimal' and package not in debootstrap_base:
print("%s/%s: Skipping package %s (package not in "
"debootstrap)" % (seed_name, architecture, package))
else:
new_recommends_list.append(package)
new_recommends_list.sort()
seed_name_recommends = '%s-recommends' % seed_name
output_recommends_filename = os.path.join(
options.outdir, '%s-%s' % (seed_name_recommends, architecture))
if os.path.exists(output_recommends_filename):
with open(output_recommends_filename) as output:
old_recommends_list = set(map(str.strip, output.readlines()))
os.rename(output_recommends_filename, output_recommends_filename + '.old')
with open(output_recommends_filename, 'w') as output:
for package in new_recommends_list:
output.write(package)
output.write('\n')
# Calculate deltas
merged = {}
recommends_merged = {}
if old_list is not None:
for package in new_list:
merged.setdefault(package, 0)
merged[package] += 1
for package in old_list:
merged.setdefault(package, 0)
merged[package] -= 1
if old_recommends_list is not None:
for package in new_recommends_list:
recommends_merged.setdefault(package, 0)
recommends_merged[package] += 1
for package in old_recommends_list:
recommends_merged.setdefault(package, 0)
recommends_merged[package] -= 1
mergeditems = sorted(merged.items())
for package, value in mergeditems:
#print(package, value)
if value == 1:
if recommends_merged.get(package, 0) == -1:
moves.setdefault(package,[])
moves[package].append([seed_name, architecture])
recommends_merged[package] += 1
else:
additions.setdefault(package,[])
additions[package].append([seed_name, architecture])
elif value == -1:
if recommends_merged.get(package, 0) == 1:
moves.setdefault(package,[])
moves[package].append([seed_name_recommends,
architecture])
recommends_merged[package] -= 1
else:
removals.setdefault(package,[])
removals[package].append([seed_name, architecture])
mergedrecitems = sorted(recommends_merged.items())
for package, value in mergedrecitems:
#print(package, value)
if value == 1:
additions.setdefault(package,[])
additions[package].append([seed_name_recommends,
architecture])
elif value == -1:
removals.setdefault(package,[])
removals[package].append([seed_name_recommends,
architecture])
with open('metapackage-map', 'w') as metapackage_map_file:
for seed_name in output_seeds:
print(seed_name, metapackage_map[seed_name],
file=metapackage_map_file)
if not options.nodch and (additions or removals or moves):
dch_help = subprocess.Popen(['dch', '--help'], stdout=subprocess.PIPE,
universal_newlines=True)
try:
have_U = '-U' in dch_help.stdout.read()
finally:
if dch_help.stdout:
dch_help.stdout.close()
dch_help.wait()
if have_U:
subprocess.check_call(['dch', '-iU', 'Refreshed dependencies'])
else:
subprocess.check_call(['dch', '-i', 'Refreshed dependencies'])
changes = []
for package in sorted(additions.keys()):
changes.append('Added %s to %s' %
(package, format_changes(additions[package])))
for package in sorted(removals.keys()):
changes.append('Removed %s from %s' %
(package, format_changes(removals[package])))
for package in sorted(moves.keys()):
# TODO: We should really list where it moved from as well, but
# that gets wordy very quickly, and at the moment this is only
# implemented for depends->recommends or vice versa. In future,
# using this for moves between seeds might also be useful.
changes.append('Moved %s to %s' %
(package, format_changes(moves[package])))
for change in changes:
print(change)
subprocess.check_call(['dch', '-a', change])
update_debootstrap_version()
else:
if not options.nodch:
print("No changes found")
return 0
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