[Bug 827950] Re: Multiarch: dpkg gets confused when installing new packages with the same version

[Steve Langasek]

dpkg isn't actually confused, it knows exactly what it's doing.  When
you build a package locally without using pkgbinarymangler, you wind up
with full package changelogs, various documentation being file copies
instead of symlinks, etc.  When launchpad builds, it obviously applies
all these changes to the package as part of the build.

So the contents of the packages are different between the two archs, and
dpkg has no basis for deciding which contents are the "right" ones in a
multiarch context.  It does the only thing it can do, it refuses to
install the new package whose contents differ from the existing ones.

** Changed in: dpkg (Ubuntu)
       Status: New => Won't Fix

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Title:
  Multiarch: dpkg gets confused when installing new packages with the
  same version

Status in “dpkg” package in Ubuntu:
  Won't Fix

Bug description:
  I often install test-build packages locally before uploading to the
  archive.  Then, once they're built in the archive, these packages get
  replaced by the archive versions.  This seems to confuse dpkg's
  multiarch /usr/share handling - for example:

  Selecting previously deselected package libglib2.0-0:i386.
  Unpacking libglib2.0-0:i386 (from .../libglib2.0-0_2.29.16-0ubuntu2_i386.deb) ...
  dpkg: error processing /var/cache/apt/archives/libglib2.0-0_2.29.16-0ubuntu2_i386.deb (--unpack):
   './usr/share/doc/libglib2.0-0/changelog.Debian.gz' is different from the same file on the system
  dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
  Preparing to replace libglib2.0-0 2.29.16-0ubuntu2 (using .../libglib2.0-0_2.29.16-0ubuntu2_amd64.deb) ...
  Unpacking replacement libglib2.0-0 ...
  Selecting previously deselected package libpcre3:i386.

  This doesn't occur when upgrading to a different package version.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: dpkg 1.16.0.3ubuntu3 [modified: usr/bin/dpkg-deb]
  ProcVersionSignature: Ubuntu 3.0.0-8.11-generic 3.0.1
  Uname: Linux 3.0.0-8-generic x86_64
  Architecture: amd64
  Date: Wed Aug 17 21:16:12 2011
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110730)
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_AU.UTF-8
   SHELL=/bin/zsh
  SourcePackage: dpkg
  UpgradeStatus: Upgraded to oneiric on 2011-08-16 (0 days ago)

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