<section xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="sec-release-14.12">
  <title>Release 14.12 (<quote>Caterpillar</quote>, 2014/12/30)</title>
  <para>
    In addition to numerous new and upgraded packages, this release has
    the following highlights:
  </para>
  <itemizedlist>
    <listitem>
      <para>
        Systemd has been updated to version 217, which has numerous
        <link xlink:href="http://lists.freedesktop.org/archives/systemd-devel/2014-October/024662.html">improvements.</link>
      </para>
    </listitem>
    <listitem>
      <para>
        <link xlink:href="https://www.mail-archive.com/nix-dev@lists.science.uu.nl/msg13957.html">Nix
        has been updated to 1.8.</link>
      </para>
    </listitem>
    <listitem>
      <para>
        NixOS is now based on Glibc 2.20.
      </para>
    </listitem>
    <listitem>
      <para>
        KDE has been updated to 4.14.
      </para>
    </listitem>
    <listitem>
      <para>
        The default Linux kernel has been updated to 3.14.
      </para>
    </listitem>
    <listitem>
      <para>
        If <literal>users.mutableUsers</literal> is enabled (the
        default), changes made to the declaration of a user or group
        will be correctly realised when running
        <literal>nixos-rebuild</literal>. For instance, removing a user
        specification from <literal>configuration.nix</literal> will
        cause the actual user account to be deleted. If
        <literal>users.mutableUsers</literal> is disabled, it is no
        longer necessary to specify UIDs or GIDs; if omitted, they are
        allocated dynamically.
      </para>
    </listitem>
  </itemizedlist>
  <para>
    Following new services were added since the last release:
  </para>
  <itemizedlist>
    <listitem>
      <para>
        <literal>atftpd</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>bosun</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>bspwm</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>chronos</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>collectd</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>consul</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>cpuminer-cryptonight</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>crashplan</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>dnscrypt-proxy</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>docker-registry</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>docker</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>etcd</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>fail2ban</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>fcgiwrap</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>fleet</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>fluxbox</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>gdm</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>geoclue2</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>gitlab</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>gitolite</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>gnome3.gnome-documents</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>gnome3.gnome-online-miners</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>gnome3.gvfs</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>gnome3.seahorse</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>hbase</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>i2pd</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>influxdb</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>kubernetes</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>liquidsoap</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>lxc</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>mailpile</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>mesos</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>mlmmj</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>monetdb</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>mopidy</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>neo4j</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>nsd</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>openntpd</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>opentsdb</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>openvswitch</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>parallels-guest</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>peerflix</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>phd</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>polipo</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>prosody</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>radicale</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>redmine</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>riemann</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>scollector</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>seeks</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>siproxd</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>strongswan</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>tcsd</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>teamspeak3</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>thermald</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>torque/mrom</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>torque/server</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>uhub</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>unifi</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>znc</literal>
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>zookeeper</literal>
      </para>
    </listitem>
  </itemizedlist>
  <para>
    When upgrading from a previous release, please be aware of the
    following incompatible changes:
  </para>
  <itemizedlist>
    <listitem>
      <para>
        The default version of Apache httpd is now 2.4. If you use the
        <literal>extraConfig</literal> option to pass literal Apache
        configuration text, you may need to update it — see
        <link xlink:href="http://httpd.apache.org/docs/2.4/upgrading.html">Apache’s
        documentation</link> for details. If you wish to continue to use
        httpd 2.2, add the following line to your NixOS configuration:
      </para>
      <programlisting language="bash">
{
  services.httpd.package = pkgs.apacheHttpd_2_2;
}
</programlisting>
    </listitem>
    <listitem>
      <para>
        PHP 5.3 has been removed because it is no longer supported by
        the PHP project. A
        <link xlink:href="http://php.net/migration54">migration
        guide</link> is available.
      </para>
    </listitem>
    <listitem>
      <para>
        The host side of a container virtual Ethernet pair is now called
        <literal>ve-container-name</literal> rather than
        <literal>c-container-name</literal>.
      </para>
    </listitem>
    <listitem>
      <para>
        GNOME 3.10 support has been dropped. The default GNOME version
        is now 3.12.
      </para>
    </listitem>
    <listitem>
      <para>
        VirtualBox has been upgraded to 4.3.20 release. Users may be
        required to run <literal>rm -rf /tmp/.vbox*</literal>. The line
        <literal>imports = [ &lt;nixpkgs/nixos/modules/programs/virtualbox.nix&gt; ]</literal>
        is no longer necessary, use
        <literal>services.virtualboxHost.enable = true</literal>
        instead.
      </para>
      <para>
        Also, hardening mode is now enabled by default, which means that
        unless you want to use USB support, you no longer need to be a
        member of the <literal>vboxusers</literal> group.
      </para>
    </listitem>
    <listitem>
      <para>
        Chromium has been updated to 39.0.2171.65.
        <literal>enablePepperPDF</literal> is now enabled by default.
        <literal>chromium*Wrapper</literal> packages no longer exist,
        because upstream removed NSAPI support.
        <literal>chromium-stable</literal> has been renamed to
        <literal>chromium</literal>.
      </para>
    </listitem>
    <listitem>
      <para>
        Python packaging documentation is now part of nixpkgs manual. To
        override the python packages available to a custom python you
        now use <literal>pkgs.pythonFull.buildEnv.override</literal>
        instead of <literal>pkgs.pythonFull.override</literal>.
      </para>
    </listitem>
    <listitem>
      <para>
        <literal>boot.resumeDevice = &quot;8:6&quot;</literal> is no
        longer supported. Most users will want to leave it undefined,
        which takes the swap partitions automatically. There is an
        evaluation assertion to ensure that the string starts with a
        slash.
      </para>
    </listitem>
    <listitem>
      <para>
        The system-wide default timezone for NixOS installations changed
        from <literal>CET</literal> to <literal>UTC</literal>. To choose
        a different timezone for your system, configure
        <literal>time.timeZone</literal> in
        <literal>configuration.nix</literal>. A fairly complete list of
        possible values for that setting is available at
        <link xlink:href="https://en.wikipedia.org/wiki/List_of_tz_database_time_zones">https://en.wikipedia.org/wiki/List_of_tz_database_time_zones</link>.
      </para>
    </listitem>
    <listitem>
      <para>
        GNU screen has been updated to 4.2.1, which breaks the ability
        to connect to sessions created by older versions of screen.
      </para>
    </listitem>
    <listitem>
      <para>
        The Intel GPU driver was updated to the 3.x prerelease version
        (used by most distributions) and supports DRI3 now.
      </para>
    </listitem>
  </itemizedlist>
</section>
