/usr/bin/which-pkg-broke is in debian-goodies 0.63.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# which-pkg-broke: help find offending packages when something breaks
# Placed in the public domain by Bill Gribble <grib@billgribble.com>
import sys
import os
import subprocess
import time
from string import *
from stat import *
def pkgdeps(pkg):
apt_cache = subprocess.Popen(
['apt-cache', 'depends', pkg],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
env={} # force POSIX locale
)
deps = []
myline = apt_cache.stdout.readline()
while(myline != ''):
elts = map(strip, myline.split(':'))
if len(elts) == 2:
how, pkg = elts
how = how.replace('|', '')
if how in ('Depends', 'PreDepends'):
deps.append(pkg)
myline = apt_cache.stdout.readline()
apt_cache.wait()
return deps
def alldeps(pkg, ignore):
deps = {}
imm_deps = pkgdeps(pkg)
for i in imm_deps:
if ignore.get(i) is None:
deps[i] = 1
ignore[i] = 1
childeps = alldeps(i, ignore)
for c in childeps:
deps[c] = 1
ignore[i] = 1
dlist = deps.keys()
return dlist
def localarchitectures():
architectures = []
dpkg_arch = subprocess.Popen(
['dpkg', '--print-architecture'],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
env={} # force POSIX locale
)
for arch in dpkg_arch.stdout.readlines():
architectures.append(arch.rstrip())
try:
dpkg_archs = subprocess.Popen(
['dpkg', '--print-foreign-architecture'],
stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
env={} # force POSIX locale
)
for arch in dpkg_archs.stdout.readlines():
architectures.append(arch.rstrip())
except OSError:
pass # non-multiarchy dpkg, which is ok
return architectures
def pkginstalltime(pkg, architectures):
times = []
for arch in architectures:
listfile = '/var/lib/dpkg/info/' + pkg + ':' + arch + '.list'
try:
times.append([pkg + ':' + arch, os.stat(listfile)[ST_MTIME]])
except OSError:
pass
if not times:
listfile = '/var/lib/dpkg/info/' + pkg + '.list'
try:
times.append([pkg, os.stat(listfile)[ST_MTIME]])
except OSError:
print "Package", pkg, "has no install time info"
return times
def what_broke(pname):
def sortfun(a, b):
return cmp(a[1], b[1])
pkgs = [ pname ]
pkgs.extend(alldeps(sys.argv[1], {}))
architectures = localarchitectures()
itimes = []
for p in pkgs:
itimes.extend(pkginstalltime(p, architectures))
itimes.sort(sortfun)
for i in itimes:
p, t = i
if t is not None:
print ljust(p, 54), time.asctime(time.localtime(float(t)))
if (len(sys.argv) != 2 or sys.argv[1][0] == '-'):
print "Usage: which-pkg-broke <pkg-name>"
sys.exit(-1)
else:
what_broke(sys.argv[1])
sys.exit(0)
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