[Bug 1589644] Re: [SRU] biber 2.4 to xenial

[LocutusOfBorg]

Hi, I did sponsor a "backport" with some changelog changes.
I did use 2.4-1ubuntu1.16.04.1 as version, because it is already higher than xenial, and lower than yakkety.
Sorry for not using your ppa version, but the versioning was wrong, the description of the issue empty, and so on :)

thanks a lot for the useful contribution to Ubuntu!

** Changed in: biber (Ubuntu Xenial)
       Status: Confirmed => Fix Committed

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Title:
  [SRU] biber 2.4 to xenial

Status in biber package in Ubuntu:
  Confirmed
Status in biber source package in Xenial:
  Fix Committed

Bug description:
  Please SRU biber 2.4 to xenial.

  [Impact]:
  ========================
  Current biber version in xenial (2.3) is too old for texlive-bibtex-extra version (2015.20160320-1), as described in Bug 1565842 , making biber uninstallable in xenial.
  Backporting the most recent version (2.5) would still be a mistake since it requires a (>>= 2016) version of texlive-bibtex-extra.
  The proper solution is to backport the 2.4-1 version as was seen in debian.
  This has been verified to function properly in the aforementioned bug.

  The bug has attracted a lot of attention with 68 people marked as
  affected as of June 13. It may meet the criteria for "High" severity
  since it "Has a severe impact on a small portion of Ubuntu users
  (estimated)" and "Prevents the application or any dependencies from
  functioning correctly at all".

  [Changes]:
  ========================
  2.4    (2016-03-01)
         * Misc bug fixes
         * There is now a 64-bit windows build built on windows 10
         * Biblatexml datasources now support sourcemapping and have a schema
           automatically generated from the datamodel. See new biber options
           'validate-bltxml' and 'no-bltxml-schema' in --help output.
         * New functionality in sourcemaps for creating new entries and
           looping over specified fields.
         * Sorting key used to sort names is now customisable. See
           \DeclareSortingNamekeyScheme in biblatex manual.
         * Support for Zotero RDF/XML and Endnote removed. These were
  experimental and messy.
  https://github.com/plk/biber/blob/dev/Changes

  [Test Case]:
  ========================
  Mark off items in the checklist [X] as you test them, but please leave the checklist so that backporters can quickly evaluate the state of testing.

  The original 2.4-1 version from debian/snapshot can be found here:
  http://snapshot.debian.org/package/biber/2.4-1/

  The PPA build that was used for testing can be found here:
  https://launchpad.net/~andrikos/+archive/ubuntu/ppa/+packages?field.name_filter=&field.status_filter=published&field.series_filter=xenial

  Probably, you can test-build the backport in your PPA with backportpackage:
  $ backportpackage -u ppa:andrikos/ppa -s xenial -d xenial biber

  * xenial:
  [X] Package builds without modification
  [X] biber installs cleanly and runs

  [Regression Potential]:
  ========
  The following reverse-dependencies need to be tested against the new version of biber. For reverse-build-dependencies (-Indep), please test that the package still builds against the new biber. For reverse-dependencies, please test that the version of the package currently in the release still works with the new biber installed. Reverse- Recommends, Suggests, and Enhances don't need to be tested, and are listed for completeness-sake.

  biber
  -----
  * science-typesetting
    [ ] xenial (Reverse-Recommends)
  * texlive-bibtex-extra
    [X] xenial (Reverse-Breaks)
  * med-typesetting
    [ ] xenial (Reverse-Suggests)

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