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#!/usr/bin/python
import apt
import apt_pkg
def blacklisted(name):
# we need to blacklist linux-image-* as it does not install
# cleanly in the chroot (postinst failes)
blacklist = [
# file-overwrite problem with libc6-dev
"libpthread-dev",
# FUBAR (was removed in feisty)
"glibc-doc-reference",
# has a funny "can not be upgraded automatically" policy
# see debian #368226
"quagga",
# the following packages try to access /lib/modules/`uname -r` and fail
"vmware-player-kernel-",
# not installable on a regular machine
"ltsp-client",
]
for b in blacklist:
if name.startswith(b):
return True
return False
def clear(cache):
cache._depcache.Init()
def reapply(cache, pkgnames):
for name in pkgnames:
cache[name].markInstall(False)
#apt_pkg.Config.Set("Dir::State::status","./empty")
cache = apt.Cache()
group = apt_pkg.GetPkgActionGroup(cache._depcache)
#print [pkg.name for pkg in cache if pkg.isInstalled]
# see what gives us problems
troublemaker = set()
best = set()
# first install all of main, then the rest
for comp in ["main",None]:
for pkg in cache:
if pkg.candidateOrigin:
for c in pkg.candidateOrigin:
if comp == None or c.component == comp:
current = set([p.name for p in cache if p.markedInstall])
if not (pkg.isInstalled or blacklisted(pkg.name)):
try:
pkg.markInstall()
except SystemError, e:
print "Installing '%s' cause problems: %s" % (pkg.name, e)
new = set([p.name for p in cache if p.markedInstall])
#if not pkg.markedInstall or len(new) < len(current):
if not (pkg.isInstalled or pkg.markedInstall):
print "Can't install: %s" % pkg.name
if len(current-new) > 0:
troublemaker.add(pkg.name)
print "Installing '%s' caused removals %s" % (pkg.name, current - new)
# FIXME: instead of len() use score() and score packages
# according to criteria like "in main", "priority" etc
if len(new) >= len(best):
best = new
else:
print "Installing '%s' reduced the set (%s < %s)" % (pkg.name, len(new), len(best))
clear(cache)
reapply(cache, best)
print len(troublemaker)
for pkg in ["ubuntu-desktop", "ubuntu-minimal", "ubuntu-standard"]:
cache[pkg].markInstall()
# make sure we don't install blacklisted stuff
for pkg in cache:
if blacklisted(pkg.name):
pkg.markKeep()
print "We can install:"
print len([pkg.name for pkg in cache if pkg.markedInstall])
print "Download: "
pm = apt_pkg.GetPackageManager(cache._depcache)
fetcher = apt_pkg.GetAcquire()
pm.GetArchives(fetcher, cache._list, cache._records)
print apt_pkg.SizeToStr(fetcher.FetchNeeded)
print "Total space: ", apt_pkg.SizeToStr(cache._depcache.UsrSize)
res = False
current = 0
maxRetries = 5
while current < maxRetries:
try:
res = cache.commit(apt.progress.TextFetchProgress(),
apt.progress.InstallProgress())
except IOError, e:
# fetch failed, will be retried
current += 1
print "Retrying to fetch: ", current
continue
except SystemError, e:
print "Error installing packages! "
print e
print "Install result: ",res
break
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