[Bug 1571087] Re: apt gets confused about a dependency's version, falls over?

[Hans Joachim Desserud]

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** Changed in: apt (Ubuntu)
       Status: New => Invalid

** Tags added: xenial

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Title:
  apt gets confused about a dependency's version, falls over?

Status in apt package in Ubuntu:
  Invalid

Bug description:
  This problem affects today's Xenial release candidate.

  I generated a package with mk-build-deps, and tried installing it.
  Here's its control file:

  Package: foo-blort3.23-build-deps
  Version: 3.23.1-76
  Architecture: all
  Maintainer: Buildus Bottus <buildbot at testbot02>
  Installed-Size: 10
  Depends: build-essential:amd64, debhelper (>= 7), autoconf, automake, autotools-dev, libasound2-dev, libavahi-client-dev, libfaac-dev, libfaad-dev, libffi-dev, libfontconfig1-dev, libfreetype6-dev, libgl1-mesa-dev, libglu1-mesa-dev, libicu-dev, libmagick++-dev, libpng12-dev, libselinux1-dev, libssl-dev, libtiff4-dev | libtiff5-dev, libudev-dev, libx11-dev, libxcomposite-dev, libxml2-dev, libxrender-dev, libyaml-dev, m4, mesa-common-dev, foo-decklink-sdk-static, foo-yobuild11-boost, foo-yobuild11-cmake, foo-yobuild11-curl | libcurl4-openssl-dev, foo-yobuild11-gnutls | libgnutls-dev (>= 3.3), foo-yobuild11-gst-plugins-base, foo-yobuild11-gstreamer, foo-yobuild11-libusb | libusb-1.0-0-dev (>= 2:1.0.19), foo-yobuild11-nettle | nettle-dev (>= 3.1.1), foo-yobuild11-nettle | libtasn1-6-dev, foo-yobuild11-nettle | libp11-kit-dev, foo-yobuild11-vars, ruby (>= 1:1.9.3.4) | rubygems, ruby-dev, rubygem-json, ttf-dejavu-extra, westar-foo-dev
  Section: devel
  Priority: optional
  Multi-Arch: foreign
  Description: build-dependencies for foo-blort3.23
   Dependency package to build the 'foo-blort3.23' package

  (Ignore all those packages that start with foo-, those are local.)

  This worked fine from ubuntu 10.04 through ubuntu 16.04 beta 2, but when I updated to final beta (with apt-get dist-upgrade),
  it failed, with error

  Correcting dependencies...Starting pkgProblemResolver with broken count: 1
  Starting 2 pkgProblemResolver with broken count: 1
  Investigating (0) foo-blort3.23-build-deps [ amd64 ] < 3.23.1-76 > ( devel )
  Broken foo-blort3.23-build-deps:amd64 Depends on libssl-dev [ amd64 ] < none -> 1.0.2g-1ubuntu3 > ( libdevel )
    Considering libssl-dev:amd64 1 as a solution to foo-blort3.23-build-deps:amd64 -2
    Removing foo-blort3.23-build-deps:amd64 rather than change libssl-dev
  Done
   Done
  Starting pkgProblemResolver with broken count: 0
  Starting 2 pkgProblemResolver with broken count: 0
  Done
  The following packages will be REMOVED:
    foo-blort3.23-build-deps

  "apt-cache policy libssl-dev" before the problem reports:

  libssl-dev:
    Installed: (none)
    Candidate: 1.0.2g-1ubuntu4
    Version table:
       1.0.2g-1ubuntu4 500
          500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages

  There seems to be some confusion about the version of libssl-dev: 1.0
  .2g-1ubuntu3 vs 1.0.2g-1ubuntu4  ?

  Installing libssl-dev before installing the package generated by mk-
  build-deps worked around the problem.

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