Your message dated Tue, 1 Mar 2011 23:02:34 -0800
with message-id <[email protected]>
and subject line Re: python-central: assumptions about dpkg db layout
incompatible with multiarch
has caused the Debian Bug report #615927,
regarding python-central: assumptions about dpkg db layout incompatible with
multiarch
to be marked as done.
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--
615927: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615927
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: python-central
Version: 0.6.15
Severity: important
Tags: patch
User: [email protected]
Usertags: multiarch
Hi guys,
python-central makes heavy reliance on the presence of
/var/lib/dpkg/info/$pkg.list to determine the installation status of $pkg.
In the multiarch world, this is no longer a valid assumption; status files
are going to be under /var/lib/dpkg/info/$arch/ instead for each
architecture. On a freshly-bootstrapped chroot using a multiarch-enabled
dpkg, therefore, python-central consistently fails to find any packages,
causing maintainer script failures.
The attached patch accounts for this in the most naive way possible, by
checking both /var/lib/dpkg/info and /var/lib/dpkg/info/$main_arch for the
requested file. There are various ways that this may still be incorrect,
but it's correct *enough* to make pycentral work again for native packages
on a multiarched system, and we're a long, long away from having to worry
about non-native python extension packages being installed (if, indeed, this
is ever permitted).
I've uploaded this change to Ubuntu with the following changelog:
* Fix up for multiarch dpkg: /var/lib/dpkg/info/$pkg.list is now no longer
guaranteed to exist, it may be /var/lib/dpkg/info/$arch/$pkg.list.
Please apply this ASAP to the python-central package in Debian, or let me
know if you think this needs to be fixed a different way.
Thanks,
--
Steve Langasek Give me a lever long enough and a Free OS
Debian Developer to set it on, and I can move the world.
Ubuntu Developer http://www.debian.org/
[email protected] [email protected]
=== modified file 'pycentral.py'
--- pycentral.py 2010-09-10 08:56:59 +0000
+++ pycentral.py 2011-03-01 04:10:43 +0000
@@ -1377,6 +1377,18 @@
def run(self, global_opts):
pass
+ def get_arch(self):
+ import subprocess
+ # a little convoluted, but we need to get the current architecture
+ # name
+ cmd = ['/usr/bin/dpkg', '--print-architecture']
+ p = subprocess.Popen(cmd, bufsize=1,
+ shell=False, stdout=subprocess.PIPE)
+ fd = p.stdout
+ arch = fd.readline().strip().split()
+ fd.close()
+ return arch
+
class ActionByteCompile(Action):
"""byte compile the *.py files in <package> using the the
@@ -1413,7 +1425,9 @@
if not self.runtime:
self.error("unknown runtime version %s" % self.options.version)
- if not os.path.exists('/var/lib/dpkg/info/%s.list' % self.pkgname):
+ arch = self.get_arch()
+ if not os.path.exists('/var/lib/dpkg/info/%s.list' % self.pkgname) \
+ and not os.path.exists('/var/lib/dpkg/info/%s/%s.list' % (arch, self.pkgname)):
self.error("package %s is not installed" % self.pkgname)
self.pkg = DebPackage('package', self.pkgname, oldstyle=False,
default_runtime=self.runtime)
@@ -1469,7 +1483,9 @@
self._option_parser.print_help()
sys.exit(1)
self.pkgname = self.args[0]
- if not os.path.exists('/var/lib/dpkg/info/%s.list' % self.pkgname):
+ arch = self.get_arch()
+ if not os.path.exists('/var/lib/dpkg/info/%s.list' % self.pkgname) \
+ and not os.path.exists('/var/lib/dpkg/info/%s/%s.list' % (arch, self.pkgname)):
self.error("package %s is not installed" % self.pkgname)
return self.errors_occured
@@ -1619,7 +1635,9 @@
self._option_parser.print_help()
sys.exit(1)
self.pkgname = self.args[0]
- if not os.path.exists('/var/lib/dpkg/info/%s.list' % self.pkgname):
+ arch = self.get_arch()
+ if not os.path.exists('/var/lib/dpkg/info/%s.list' % self.pkgname) \
+ and not os.path.exists('/var/lib/dpkg/info/%s/%s.list' % (arch, self.pkgname)):
self.error("package %s is not installed" % self.pkgname)
return self.errors_occured
@@ -1645,7 +1663,9 @@
self._option_parser.print_help()
sys.exit(1)
self.pkgname = self.args[0]
- if not os.path.exists('/var/lib/dpkg/info/%s.list' % self.pkgname):
+ arch = self.get_arch()
+ if not os.path.exists('/var/lib/dpkg/info/%s.list' % self.pkgname) \
+ and not os.path.exists('/var/lib/dpkg/info/%s/%s.list' % (arch, self.pkgname)):
self.error("package %s is not installed" % self.pkgname)
return self.errors_occured
@@ -1675,7 +1695,9 @@
self._option_parser.print_help()
sys.exit(1)
self.pkgname = self.args[0]
- if not os.path.exists('/var/lib/dpkg/info/%s.list' % self.pkgname):
+ arch = self.get_arch()
+ if not os.path.exists('/var/lib/dpkg/info/%s.list' % self.pkgname) \
+ and not os.path.exists('/var/lib/dpkg/info/%s/%s.list' % (arch, self.pkgname)):
self.error("package %s is not installed" % self.pkgname)
return self.errors_occured
@@ -1793,7 +1815,8 @@
needed_packages = []
import subprocess
for pkgname, vstring in packages:
- if not os.path.exists('/var/lib/dpkg/info/%s.list' % pkgname):
+ if not os.path.exists('/var/lib/dpkg/info/%s.list' % pkgname) \
+ and not os.path.exists('/var/lib/dpkg/info/%s/%s.list' % (arch, pkgname)):
# already removed, but /var/lib/dpkg/status not yet updated
continue
cmd = ['/usr/bin/dpkg-query', '-W', '-f', '${Status}\n', pkgname]
--- End Message ---
--- Begin Message ---
Please disregard; the dpkg db layout that this is a response to is not
actually as final as I had thought. It looks like python-central should not
need changes to work with the final multiarch db layout.
--
Steve Langasek Give me a lever long enough and a Free OS
Debian Developer to set it on, and I can move the world.
Ubuntu Developer http://www.debian.org/
[email protected] [email protected]
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--- End Message ---
