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#! /usr/bin/env python
#
# FIXME: strip "TryExec" from the extracted menu files (and noDisplay)
#
# TODO:
# - emacs21 ships it's icon in emacs-data, deal with this
# - some stuff needs to be blacklisted (e.g. gnome-about)
# - lots of packages have there desktop file in "-data", "-comon" (e.g. anjuta)
# - lots of packages have multiple desktop files for the same application
# abiword, abiword-gnome, abiword-gtk
from __future__ import print_function
import os
import sys
import warnings
warnings.filterwarnings("ignore", "apt API not stable yet", FutureWarning)
import apt
import apt_pkg
#import xdg.Menu
ARCHES = ["i386","amd64"]
#ARCHES = ["i386"]
# pkgs in main for the given dist
class Dist(object):
def __init__(self,name):
self.name = name
self.pkgs_in_comp = {}
def get_replace(cache, pkgname):
replaces = set()
if pkgname not in cache:
#print("can not find '%s'" % pkgname)
return replaces
pkg = cache[pkgname]
ver = cache._depcache.get_candidate_ver(pkg._pkg)
if not ver:
return replaces
depends = ver.depends_list
for t in ["Replaces"]:
if t not in depends:
continue
for depVerList in depends[t]:
for depOr in depVerList:
replaces.add(depOr.target_pkg.name)
return replaces
if __name__ == "__main__":
# init
apt_pkg.config.set("Dir::state","./apt/")
apt_pkg.config.set("Dir::Etc","./apt")
apt_pkg.config.set("Dir::State::status","./apt/status")
try:
os.makedirs("apt/lists/partial")
except OSError:
pass
old = Dist(sys.argv[1]) # Dist("gutsy")
new = Dist(sys.argv[2]) # Dist("hardy")
# go over the dists to find main pkgs
for dist in [old, new]:
for comp in ["main", "restricted", "universe", "multiverse"]:
line = "deb http://archive.ubuntu.com/ubuntu %s %s\n" % (dist.name,comp)
with open("apt/sources.list", "w") as sources_list:
sources_list.write(line)
dist.pkgs_in_comp[comp] = set()
# and the archs
for arch in ARCHES:
apt_pkg.config.set("APT::Architecture",arch)
cache = apt.Cache(apt.progress.base.OpProgress())
prog = apt.progress.base.AcquireProgress()
cache.update(prog)
cache.open(apt.progress.base.OpProgress())
for pkg in cache:
if ":" in pkg.name:
continue
dist.pkgs_in_comp[comp].add(pkg.name)
# check what is no longer in main
no_longer_main = old.pkgs_in_comp["main"] - new.pkgs_in_comp["main"]
no_longer_main |= old.pkgs_in_comp["restricted"] - new.pkgs_in_comp["restricted"]
# check what moved to universe and what was removed (or renamed)
in_universe = lambda pkg: pkg in new.pkgs_in_comp["universe"] or pkg in new.pkgs_in_comp["multiverse"]
# debug
#print([pkg for pkg in no_longer_main if not in_universe(pkg)])
# this stuff was demoted and is in universe
demoted = [pkg for pkg in no_longer_main if in_universe(pkg)]
demoted.sort()
# remove items that are now in universe, but are replaced by something
# in main (pidgin, gaim) etc
#print("Looking for replaces")
line = "deb http://archive.ubuntu.com/ubuntu %s %s\n" % (new.name, "main")
with open("apt/sources.list", "w") as sources_list:
sources_list.write(line)
dist.pkgs_in_comp[comp] = set()
for arch in ARCHES:
apt_pkg.config.set("APT::Architecture",arch)
cache = apt.Cache(apt.progress.base.OpProgress())
prog = apt.progress.base.AcquireProgress()
cache.update(prog)
cache.open(apt.progress.base.OpProgress())
# go over the packages in "main" and check if they replaces something
# that we think is a demotion
for pkgname in new.pkgs_in_comp["main"]:
replaces = get_replace(cache, pkgname)
for r in replaces:
if r in demoted:
#print("found '%s' that is demoted but replaced by '%s'" % (r, pkgname))
demoted.remove(r)
#outfile = "demoted.cfg"
#print("writing the demotion info to '%s'" % outfile)
# write it out
#out = open(outfile,"w")
#out.write("# demoted packages\n")
#out.write("\n".join(demoted))
print("# demoted packages from %s to %s" % (sys.argv[1], sys.argv[2]))
print("\n".join(demoted))
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