Hah. Invalid. The confusion came from another package that had been built against the earlier ssl. Rebuilding all old packages built against the earlier beta seems to have solved things.
So at worst, apt's error messages are hard to decipher... but we already knew that. Please close and forget this bug was ever filed :-) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1571087 Title: apt gets confused about a dependency's version, falls over? Status in apt package in Ubuntu: New 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@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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1571087/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp