Pkg xen devel - Nov 2007 - Bug#450638: Rebuild fails even if only debian/changelog updated

Package: xen-3
Version: 3.1.1-1

See the transcript below, where I
  * dpkg-source -x debian/xen-3_3.1.1-1.dsc
  * add an entry to debian/changelog at the top
  * run dpkg-buildpackage, which fails

I installed the build-dependencies on sid and lenny and the path it's
looking for doesn't exist there either.

Thanks,
Ian.

mariner:d> dpkg-source -x ../debian/xen-3_3.1.1-1.dsc 
gpg: Signature made Sat Oct 20 09:23:18 2007 BST using DSA key ID 7F4E0E11
gpg: Can't check signature: public key not found
dpkg-source: extracting xen-3 in xen-3-3.1.1
dpkg-source: unpacking xen-3_3.1.1-1.tar.gz
mariner:d> cd xen-3-3.1.1/
mariner:xen-3-3.1.1> cp --backup ../../xen-sid.hg/debian/changelog debian/
mariner:xen-3-3.1.1> diff -u debian/changelog{~,}
--- debian/changelog~   2007-10-19 17:03:06.000000000 +0100
+++ debian/changelog    2007-11-08 15:55:48.000000000 +0000
@@ -1,3 +1,10 @@
+xen-3 (3.2~0changeset16319) unstable; urgency=low
+  
+  * Updated to xen-unstable changeset: 16319:dfe9c0c10a2c
+  * Made patches apply.
+
+ -- Ian Jackson <iwj at mariner.uk.xensource.com>  Thu,  8 Nov 2007
15:43:40 +0000
+
 xen-3 (3.1.1-1) unstable; urgency=low
 
   * New upstream release:
mariner:xen-3-3.1.1> dpkg-checkbuilddeps 
mariner:xen-3-3.1.1> debian/rules build
if [ -f debian/control ] && [ -f debian/control.md5sum ] && [ -f
debian/rules.gen ]; then \
                if md5sum debian/changelog
debian/templates/control.hypervisor.in debian/templates/control.main.in
debian/templates/control.source.in debian/templates/control.utils.in
debian/arch/defines debian/arch/amd64/defines debian/arch/i386/defines | diff -
debian/control.md5sum > /dev/null; then true; else \
                        /usr/bin/make -f debian/rules debian/control-real; \
                fi \
        else \
                /usr/bin/make -f debian/rules debian/control-real; \
        fi
make[1]: Entering directory `/home/iwj/work/d/xen-3-3.1.1'
debian/bin/gencontrol.py
Traceback (most recent call last):
  File "debian/bin/gencontrol.py", line 4, in ?
    from debian_xen.debian import VersionXen
  File
"/home/iwj/work/d/xen-3-3.1.1/debian/bin/../lib/python/debian_xen/__init__.py",
line 19, in ?
    _setup()
  File
"/home/iwj/work/d/xen-3-3.1.1/debian/bin/../lib/python/debian_xen/__init__.py",
line 16, in _setup
    raise RuntimeError("Can't find %s" % support)
RuntimeError: Can't find /usr/src/linux-support-2.6.22-2
make[1]: *** [debian/control-real] Error 1
make[1]: Leaving directory `/home/iwj/work/d/xen-3-3.1.1'
make: *** [debian/control] Error 2
mariner:xen-3-3.1.1> debian/rules clean
if [ -f debian/control ] && [ -f debian/control.md5sum ] && [ -f
debian/rules.gen ]; then \
                if md5sum debian/changelog
debian/templates/control.hypervisor.in debian/templates/control.main.in
debian/templates/control.source.in debian/templates/control.utils.in
debian/arch/defines debian/arch/amd64/defines debian/arch/i386/defines | diff -
debian/control.md5sum > /dev/null; then true; else \
                        /usr/bin/make -f debian/rules debian/control-real; \
                fi \
        else \
                /usr/bin/make -f debian/rules debian/control-real; \
        fi
make[1]: Entering directory `/home/iwj/work/d/xen-3-3.1.1'
debian/bin/gencontrol.py
Traceback (most recent call last):
  File "debian/bin/gencontrol.py", line 4, in ?
    from debian_xen.debian import VersionXen
  File
"/home/iwj/work/d/xen-3-3.1.1/debian/bin/../lib/python/debian_xen/__init__.py",
line 19, in ?
    _setup()
  File
"/home/iwj/work/d/xen-3-3.1.1/debian/bin/../lib/python/debian_xen/__init__.py",
line 16, in _setup
    raise RuntimeError("Can't find %s" % support)
RuntimeError: Can't find /usr/src/linux-support-2.6.22-2
make[1]: *** [debian/control-real] Error 1
make[1]: Leaving directory `/home/iwj/work/d/xen-3-3.1.1'
make: *** [debian/control] Error 2
mariner:xen-3-3.1.1>

retitle 450638 xen-3 - document how to change package
thanks

On Thu, Nov 08, 2007 at 06:29:48PM +0000, Ian Jackson
wrote:
> I installed the build-dependencies on sid and lenny and the path it's
> looking for doesn't exist there either.
Build-dependencies are for building the package, not changing it. It is
not really documented what is needed to change it. debian/changelog is
critical here as the version is used for the abiname.

Anyway, if you want to do snapshots from unstable use
svn://svn.debian.org/pkg-xen/trunk/xen-unstable, it is configured
differently.

Bastian

-- 
We fight only when there is no other choice.  We prefer the ways of
peaceful contact.
		-- Kirk, "Spectre of the Gun", stardate 4385.3

Bastian Blank writes ("Re: [Pkg-xen-devel] Bug#450638: Bug#450638: Rebuild
fails even if only debian/changelog updated"):
> On Fri, Nov 09, 2007 at 10:56:15AM +0000, Ian Jackson wrote:
> > I've made the debian/patches from your svn apply to xen-unstable
> > 16319.  What would you like me to do with the result ?
> 
> mailto:pkg-xen-devel at ...
So, I wrote:
> I've resolved the conflicts between the xen-unstable svn tree's
> patchset and xen-unstable 16319 (which was the tip a few days ago).
> The result is below, as the output of `svn diff' - so a series of
> interdiffs, unfortunately.
I didn't receive any reply.

Should I file a bug ?  Obviously the world has moved on.  I now
have a set of patches which are based on svn r455 and apply to hg
16573:38a45b7c6cb5.

Ian.