I'm using the snippet of code below in order to resolve dependencies
from a list of packages, and it works fine.
However there are some problems I can't work out how to fix:
(1) How do I emulate the '--quiet' command line option, ie. make it so
that the yum libraries don't send lots of messages to stdout (which
conflicts with the list that I want to write to stdout).
(2) When I run this as non-root, it works, *unless* the yum repo is
not up to date. If the yum repo is not up to date then it fails
because it tries to download and overwrite package lists in a
root-owned directory. Now obviously other tools eg. yumdownloader
work fine as non-root. How can I fix that?
(3) How can I make it use a non-default location for the yum
configuration (instead of /etc/yum.conf /etc/yum.repos.d/*)?
Alternately emulate --disablerepo/--enablerepo on the command line?
Thanks,
Rich.
----------------------------------------------------------------------
import yum
import yum.misc
import sys
yb = yum.YumBase ()
#yum.logginglevels.setDebugLevel(0) -- doesn't work?
# Look up the base packages from the command line.
deps = dict ()
pkgs = yb.pkgSack.returnPackages (patterns=sys.argv[2:])
for pkg in pkgs:
deps[pkg] = False
# Recursively find all the dependencies.
stable = False
while not stable:
stable = True
for pkg in deps.keys():
if deps[pkg] == False:
deps[pkg] = []
stable = False
for r in pkg.requires:
ps = yb.whatProvides (r[0], r[1], r[2])
best = yb._bestPackageFromList (ps.returnPackages ())
if best.name != pkg.name:
deps[pkg].append (best)
if not deps.has_key (best):
deps[best] = False
deps[pkg] = yum.misc.unique (deps[pkg])
f = open (sys.argv[1], \"w\")
for pkg in deps.keys ():
f.write (\"%s %s %s %s %s\\n\" %
(pkg.name, pkg.epoch, pkg.version, pkg.release, pkg.arch))
f.close ()
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-top is 'top' for virtual machines. Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://et.redhat.com/~rjones/virt-top
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