[Bug 1540591] Re: fontconfig breaks Trusty - Xenial upgrade

[Sebastien Bacher]

Seems like the issue is that fontconfig gets updated before its lib and
the cache update fails due to the missing symbols.

It looks like the shlibs in debian/rules should be updated to 2.11.1 ...

Iain you did that update, does that seems right to you? Would it be
enough to ensure the library is unpacked before the service or do we
need a pre-depends there?

** Changed in: fontconfig (Ubuntu Xenial)
     Assignee: (unassigned) => Iain Lane (laney)

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Title:
  fontconfig breaks Trusty - Xenial upgrade

Status in fontconfig package in Ubuntu:
  Confirmed
Status in fontconfig source package in Xenial:
  Confirmed

Bug description:
  Attempting to upgrade a fully updated 14.04.3 system to Xenial using
  the do-release-upgrade tool.

  The upgrade proceeds until it attempts to install fontconfig.  This
  fails and causes a cascading set of failures for 160+ more packages
  resulting in a system that boots, and has console access, but no
  Unity, and other things that either fail to work or only work halfway.

  Attempts after the failed upgrade to fix the issues via "apt-get -f
  install" fail with the same errors as seen during the upgrade.

  Here's the apt term log showing the errors, starting with fontconfig:

  http://paste.ubuntu.com/14852379/

  And here's the contents of fontconfig.log as suggested by trying to
  manually install fontconfig vai "apt-get install fontconfig"

  /usr/share/fonts: caching, new cache contents: 0 fonts, 4 dirs
  /usr/share/fonts/X11: caching, new cache contents: 0 fonts, 4 dirs
  /usr/share/fonts/X11/Type1: caching, new cache contents: 9 fonts, 0 dirs
  /usr/share/fonts/X11/encodings: caching, new cache contents: 0 fonts, 1 dirs
  /usr/share/fonts/X11/encodings/large: caching, new cache contents: 0 fonts, 0 dirs
  /usr/share/fonts/X11/misc: caching, new cache contents: 59 fonts, 0 dirs
  /usr/share/fonts/X11/util: caching, new cache contents: 0 fonts, 0 dirs
  /usr/share/fonts/cmap: caching, new cache contents: 0 fonts, 5 dirs
  /usr/share/fonts/cmap/adobe-cns1: caching, new cache contents: 0 fonts, 0 dirs
  /usr/share/fonts/cmap/adobe-gb1: caching, new cache contents: 0 fonts, 0 dirs
  /usr/share/fonts/cmap/adobe-japan1: caching, new cache contents: 0 fonts, 0 dirs
  /usr/share/fonts/cmap/adobe-japan2: caching, new cache contents: 0 fonts, 0 dirs
  /usr/share/fonts/cmap/adobe-korea1: caching, new cache contents: 0 fonts, 0 dirs
  /usr/share/fonts/truetype: caching, new cache contents: 1 fonts, 19 dirs
  /usr/share/fonts/truetype/abyssinica: caching, new cache contents: 1 fonts, 0 dirs
  /usr/share/fonts/truetype/dejavu: caching, new cache contents: 6 fonts, 0 dirs
  /usr/share/fonts/truetype/droid: caching, new cache contents: 18 fonts, 0 dirs
  /usr/share/fonts/truetype/freefont: caching, new cache contents: 12 fonts, 0 dirs
  /usr/share/fonts/truetype/kacst: caching, new cache contents: 15 fonts, 0 dirs
  /usr/share/fonts/truetype/kacst-one: caching, new cache contents: 2 fonts, 0 dirs
  /usr/share/fonts/truetype/lao: caching, new cache contents: 1 fonts, 0 dirs
  /usr/share/fonts/truetype/liberation: caching, new cache contents: 16 fonts, 0 dirs
  /usr/share/fonts/truetype/nanum: caching, new cache contents: 6 fonts, 0 dirs
  /usr/share/fonts/truetype/openoffice: caching, new cache contents: 1 fonts, 0 dirs
  /usr/share/fonts/truetype/padauk: caching, new cache contents: 4 fonts, 0 dirs
  /usr/share/fonts/truetype/sinhala: caching, new cache contents: 1 fonts, 0 dirs
  /usr/share/fonts/truetype/takao-gothic: caching, new cache contents: 1 fonts, 0 dirs
  /usr/share/fonts/truetype/tibetan-machine: caching, new cache contents: 1 fonts, 0 dirs
  /usr/share/fonts/truetype/tlwg: caching, new cache contents: 54 fonts, 0 dirs
  /usr/share/fonts/truetype/ttf-indic-fonts-core: caching, new cache contents: 17 fonts, 0 dirs
  /usr/share/fonts/truetype/ttf-khmeros-core: caching, new cache contents: 2 fonts, 0 dirs
  /usr/share/fonts/truetype/ttf-punjabi-fonts: caching, new cache contents: 2 fonts, 0 dirs
  /usr/share/fonts/truetype/ubuntu-font-family: caching, new cache contents: 13 fonts, 0 dirs
  /usr/share/fonts/type1: caching, new cache contents: 0 fonts, 2 dirs
  /usr/share/fonts/type1/gsfonts: caching, new cache contents: 35 fonts, 0 dirs
  /usr/share/fonts/type1/mathml: caching, new cache contents: 1 fonts, 0 dirs
  /usr/local/share/fonts: caching, new cache contents: 0 fonts, 0 dirs
  /.local/share/fonts: skipping, no such directory
  Re-scanning /usr/share/fonts: fc-cache: symbol lookup error: fc-cache: undefined symbol: FcDirCacheRescan

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