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Ubuntu 16.04 has the wrong version of biber shipped, biber 2.3 is too low to be compatible with biblatex:

$ sudo apt-get install texlive-bibtex-extra biber
Reading package lists... Done
Building dependency tree       
Reading state information... Done
texlive-bibtex-extra is already the newest version (2015.20160320-1).
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 texlive-bibtex-extra : Breaks: biber (< 2.4) but 2.3-1 is to be installed
E: Unable to correct problems, you have held broken packages.

I need this working, and I have little idea how these systems work. A maintainer wrote:

Accepted biber into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/biber/2.4-1ubuntu1.16.04.1 in a few hours, and then in the -proposed repository.

I followed the instructions to allow -proposed, but sudo apt-get upgrade biber wouldnt update it to 2.4. How can I get biber version 2.4? Does it have to go through -proposed, or is there a simpler way?

I also tried

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This has been fixed yesterday (2016/06/28) ; now you can install directly biber (it will install version 2.4; be sure to do an sudo apt-get update before).

It will pull a lot of perl libraries, but it will not try to remove half of your LaTeX installation. 

[romano:~] % apt-cache policy biber
biber:
  Installed: 2.4-1ubuntu1.16.04.1
  Candidate: 2.4-1ubuntu1.16.04.1
  Version table:
 *** 2.4-1ubuntu1.16.04.1 500
        500 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 Packages
        500 http://archive.ubuntu.com/ubuntu xenial-updates/universe i386 Packages
        100 /var/lib/dpkg/status
     2.3-1 500
        500 http://archive.ubuntu.com/ubuntu xenial/universe amd64 Packages
        500 http://archive.ubuntu.com/ubuntu xenial/universe i386 Packages

See https://bugs.launchpad.net/ubuntu/+source/biber/+bug/1589644/comments/21

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  • This is solved in 16.04, but it is still conflicting in 16.10
    – Ludenticus
    Dec 8, 2016 at 23:41

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