<section xmlns="http://docbook.org/ns/docbook"
         xmlns:xlink="http://www.w3.org/1999/xlink"
         xmlns:xi="http://www.w3.org/2001/XInclude"
         version="5.0"
         xml:id="sec-release-14.12">

<title>Release 14.12 (“Caterpillar”, 2014/12/30)</title>

<para>In addition to numerous new and upgraded packages, this release has the following highlights:

<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="http://thread.gmane.org/gmane.linux.distributions.nixos/15165">
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 <option>users.mutableUsers</option> is enabled (the
default), changes made to the declaration of a user or group will be
correctly realised when running <command>nixos-rebuild</command>. For
instance, removing a user specification from
<filename>configuration.nix</filename> will cause the actual user
account to be deleted. If <option>users.mutableUsers</option> is
disabled, it is no longer necessary to specify UIDs or GIDs; if
omitted, they are allocated dynamically.</para></listitem>

</itemizedlist></para>

<para>Following new services were added since the last release:

<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>

<para>When upgrading from a previous release, please be aware of the
following incompatible changes:

<itemizedlist>

<listitem><para>The default version of Apache httpd is now 2.4. If
you use the <option>extraConfig</option> 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:

<programlisting>
services.httpd.package = pkgs.apacheHttpd_2_2;
</programlisting>

</para></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-<replaceable>container-name</replaceable></literal>
rather than <literal>c-<replaceable>container-name</replaceable></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 <command>rm -rf /tmp/.vbox*</command>. 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. <option>enablePepperPDF</option> 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 = "8:6"</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"/>.</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>

</para>

</section>
