Pkg xen devel - Aug 2006 - Bug#384739: ImportError: No module named xen.xend.server

Package: xen-utils-3.0
Version: 3.0.2+hg9697-2
Severity: grave
Justification: renders package unusable


Below you find the output of apt-get install xen-utils-3.0 .
/usr/sbin/xend tries tom import the python scripts from
/usr/lib/python as well as from /usr/lib64/python ; both directories
do not exist on my system, I have python2.4 installed.
(With both python2.3 and python2.4 installed I had the same error.)
(When forcing an install of libxen-python, which is no more existent
in the repository, 'xend start' does work.)
The problem is obviously connected with the python transition.

This bug is grave, because xen-utils-3.0 is broken after install and
cannot be removed via apt / dpkg. I had to manually do prerm (fails,
partially), delete, postrm.

I have this problem for at least a week now.



Selecting previously deselected package xen-utils-3.0.
(Reading database ... 161873 files and directories currently installed.)
Unpacking xen-utils-3.0 (from .../xen-utils-3.0_3.0.2+hg9697-2_amd64.deb) ...
Setting up xen-utils-3.0 (3.0.2+hg9697-2) ...
Starting XEN: Traceback (most recent call last):
  File "/usr/sbin/xend", line 33, in ?
    from xen.xend.server import SrvDaemon
ImportError: No module named xen.xend.server
invoke-rc.d: initscript xend, action "start" failed.
dpkg: error processing xen-utils-3.0 (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 xen-utils-3.0
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install.  Trying to recover:
Setting up xen-utils-3.0 (3.0.2+hg9697-2) ...
Starting XEN: Traceback (most recent call last):
  File "/usr/sbin/xend", line 33, in ?
    from xen.xend.server import SrvDaemon
ImportError: No module named xen.xend.server
invoke-rc.d: initscript xend, action "start" failed.
dpkg: error processing xen-utils-3.0 (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 xen-utils-3.0



-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.16-2-xen-amd64-k8
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)

tags 384739 patch
thanks

Thanks to Nicolas for the hint -- here is a patch that fixes the problem,
all it takes is switching the order in which dh_pycentral/dh_installinit are
called when building.

Cheers,
-- 
Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
vorlon@debian.org                                   http://www.debian.org/
-------------- next part --------------
diff -u xen-3.0-3.0.2+hg9697/debian/changelog
xen-3.0-3.0.2+hg9697/debian/changelog
--- xen-3.0-3.0.2+hg9697/debian/changelog
+++ xen-3.0-3.0.2+hg9697/debian/changelog
@@ -1,3 +1,13 @@
+xen-3.0 (3.0.2+hg9697-2.1) unstable; urgency=high
+
+  * Non-maintainer upload.
+  * High-urgency upload for RC bugfix.
+  * Switch the order of dh_python/dh_pycentral and dh_installinit in 
+    debian/rules, so that the python modules are available when the 
+    postinst tries to start the init script.  Closes: #384739.
+
+ -- Steve Langasek <vorlon@debian.org>  Wed, 30 Aug 2006 18:37:54 -0700
+
 xen-3.0 (3.0.2+hg9697-2) unstable; urgency=low
 
   [ Guido Trotter ]
diff -u xen-3.0-3.0.2+hg9697/debian/rules xen-3.0-3.0.2+hg9697/debian/rules
--- xen-3.0-3.0.2+hg9697/debian/rules
+++ xen-3.0-3.0.2+hg9697/debian/rules
@@ -174,6 +174,8 @@
 	dh_installchangelogs -s
 	dh_installdocs -s
 	dh_installexamples -s
+	dh_pycentral -s
+	dh_python -s
 	dh_installinit -p xen-utils-$(MAJOR) --name xend -- defaults 20 21
 	dh_installinit -p xen-utils-$(MAJOR) --name xendomains --no-restart-on-upgrade
-- defaults 21 20
 	dh_installman -s
@@ -181,8 +183,6 @@
 	dh_strip -s
 	dh_compress -s
 	dh_fixperms -s
-	dh_pycentral -s
-	dh_python -s
 	dh_makeshlibs -s
 	dh_installdeb -s
 	dh_shlibdeps -s

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> tags 384739 patch
Bug#384739: ImportError: No module named xen.xend.server
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> thanks
Stopping processing here.

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(administrator, Debian Bugs database)

Your message dated Thu, 7 Sep 2006 18:22:16 +0200
with message-id <20060907162216.GA4865@uio.no>
and subject line Fixed in NMU of xen-3.0 3.0.2+hg9697-2.1
has caused the attached Bug report to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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