<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-17.03">
 <title>Release 17.03 (“Gorilla”, 2017/03/31)</title>

 <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-17.03-highlights">
  <title>Highlights</title>

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

  <itemizedlist>
   <listitem>
    <para>
     Nixpkgs is now extensible through overlays. See the
     <link
    xlink:href="https://nixos.org/nixpkgs/manual/#sec-overlays-install">Nixpkgs
     manual</link> for more information.
    </para>
   </listitem>
   <listitem>
    <para>
     This release is based on Glibc 2.25, GCC 5.4.0 and systemd 232. The
     default Linux kernel is 4.9 and Nix is at 1.11.8.
    </para>
   </listitem>
   <listitem>
    <para>
     The default desktop environment now is KDE's Plasma 5. KDE 4 has been
     removed
    </para>
   </listitem>
   <listitem>
    <para>
     The setuid wrapper functionality now supports setting capabilities.
    </para>
   </listitem>
   <listitem>
    <para>
     X.org server uses branch 1.19. Due to ABI incompatibilities,
     <literal>ati_unfree</literal> keeps forcing 1.17 and
     <literal>amdgpu-pro</literal> starts forcing 1.18.
    </para>
   </listitem>
   <listitem>
    <para>
     Cross compilation has been rewritten. See the nixpkgs manual for details.
     The most obvious breaking change is that in derivations there is no
     <literal>.nativeDrv</literal> nor <literal>.crossDrv</literal> are now
     cross by default, not native.
    </para>
   </listitem>
   <listitem>
    <para>
     The <literal>overridePackages</literal> function has been rewritten to be
     replaced by
     <link
    xlink:href="https://nixos.org/nixpkgs/manual/#sec-overlays-install">
     overlays</link>
    </para>
   </listitem>
   <listitem>
    <para>
     Packages in nixpkgs can be marked as insecure through listed
     vulnerabilities. See the
     <link
    xlink:href="https://nixos.org/nixpkgs/manual/#sec-allow-insecure">Nixpkgs
     manual</link> for more information.
    </para>
   </listitem>
   <listitem>
    <para>
     PHP now defaults to PHP 7.1
    </para>
   </listitem>
  </itemizedlist>
 </section>

 <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-17.03-new-services">
  <title>New Services</title>

  <para>
   The following new services were added since the last release:
  </para>

  <itemizedlist>
   <listitem>
    <para>
     <literal>hardware/ckb.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>hardware/mcelog.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>hardware/usb-wwan.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>hardware/video/capture/mwprocapture.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>programs/adb.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>programs/chromium.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>programs/gphoto2.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>programs/java.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>programs/mtr.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>programs/oblogout.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>programs/vim.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>programs/wireshark.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>security/dhparams.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/audio/ympd.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/computing/boinc/client.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/continuous-integration/buildbot/master.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/continuous-integration/buildbot/worker.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/continuous-integration/gitlab-runner.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/databases/riak-cs.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/databases/stanchion.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/desktops/gnome3/gnome-terminal-server.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/editors/infinoted.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/hardware/illum.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/hardware/trezord.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/logging/journalbeat.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/mail/offlineimap.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/mail/postgrey.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/misc/couchpotato.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/misc/docker-registry.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/misc/errbot.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/misc/geoip-updater.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/misc/gogs.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/misc/leaps.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/misc/nix-optimise.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/misc/ssm-agent.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/misc/sssd.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/arbtt.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/netdata.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/prometheus/default.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/prometheus/alertmanager.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/prometheus/blackbox-exporter.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/prometheus/json-exporter.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/prometheus/nginx-exporter.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/prometheus/node-exporter.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/prometheus/snmp-exporter.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/prometheus/unifi-exporter.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/prometheus/varnish-exporter.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/sysstat.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/telegraf.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/monitoring/vnstat.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/network-filesystems/cachefilesd.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/network-filesystems/glusterfs.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/network-filesystems/ipfs.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/dante.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/dnscrypt-wrapper.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/fakeroute.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/flannel.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/htpdate.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/miredo.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/nftables.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/powerdns.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/pdns-recursor.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/quagga.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/redsocks.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/networking/wireguard.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/system/cgmanager.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/torrent/opentracker.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/web-apps/atlassian/confluence.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/web-apps/atlassian/crowd.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/web-apps/atlassian/jira.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/web-apps/frab.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/web-apps/nixbot.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/web-apps/selfoss.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/web-apps/quassel-webserver.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/x11/unclutter-xfixes.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>services/x11/urxvtd.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>system/boot/systemd-nspawn.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>virtualisation/ecs-agent.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>virtualisation/lxcfs.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>virtualisation/openstack/keystone.nix</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>virtualisation/openstack/glance.nix</literal>
    </para>
   </listitem>
  </itemizedlist>
 </section>

 <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-17.03-incompatibilities">
  <title>Backward Incompatibilities</title>

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

  <itemizedlist>
   <listitem>
    <para>
     Derivations have no <literal>.nativeDrv</literal> nor
     <literal>.crossDrv</literal> and are now cross by default, not native.
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>stdenv.overrides</literal> is now expected to take
     <literal>self</literal> and <literal>super</literal> arguments. See
     <literal>lib.trivial.extends</literal> for what those parameters
     represent.
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>ansible</literal> now defaults to ansible version 2 as version 1
     has been removed due to a serious
     <link
      xlink:href="https://www.computest.nl/advisories/CT-2017-0109_Ansible.txt">
     vulnerability</link> unpatched by upstream.
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>gnome</literal> alias has been removed along with
     <literal>gtk</literal>, <literal>gtkmm</literal> and several others. Now
     you need to use versioned attributes, like <literal>gnome3</literal>.
    </para>
   </listitem>
   <listitem>
    <para>
     The attribute name of the Radicale daemon has been changed from
     <literal>pythonPackages.radicale</literal> to <literal>radicale</literal>.
    </para>
   </listitem>
   <listitem>
    <para>
     The <literal>stripHash</literal> bash function in
     <literal>stdenv</literal> changed according to its documentation; it now
     outputs the stripped name to <literal>stdout</literal> instead of putting
     it in the variable <literal>strippedName</literal>.
    </para>
   </listitem>
   <listitem>
    <para>
     PHP now scans for extra configuration .ini files in /etc/php.d instead of
     /etc. This prevents accidentally loading non-PHP .ini files that may be in
     /etc.
    </para>
   </listitem>
   <listitem>
    <para>
     Two lone top-level dict dbs moved into <literal>dictdDBs</literal>. This
     affects: <literal>dictdWordnet</literal> which is now at
     <literal>dictdDBs.wordnet</literal> and <literal>dictdWiktionary</literal>
     which is now at <literal>dictdDBs.wiktionary</literal>
    </para>
   </listitem>
   <listitem>
    <para>
     Parsoid service now uses YAML configuration format.
     <literal>service.parsoid.interwikis</literal> is now called
     <literal>service.parsoid.wikis</literal> and is a list of either API URLs
     or attribute sets as specified in parsoid's documentation.
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>Ntpd</literal> was replaced by
     <literal>systemd-timesyncd</literal> as the default service to synchronize
     system time with a remote NTP server. The old behavior can be restored by
     setting <literal>services.ntp.enable</literal> to <literal>true</literal>.
     Upstream time servers for all NTP implementations are now configured using
     <literal>networking.timeServers</literal>.
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>service.nylon</literal> is now declared using named instances. As
     an example:
<programlisting>
  services.nylon = {
    enable = true;
    acceptInterface = "br0";
    bindInterface = "tun1";
    port = 5912;
  };
</programlisting>
     should be replaced with:
<programlisting>
  services.nylon.myvpn = {
    enable = true;
    acceptInterface = "br0";
    bindInterface = "tun1";
    port = 5912;
  };
</programlisting>
     this enables you to declare a SOCKS proxy for each uplink.
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>overridePackages</literal> function no longer exists. It is
     replaced by
     <link
    xlink:href="https://nixos.org/nixpkgs/manual/#sec-overlays-install">
     overlays</link>. For example, the following code:
<programlisting>
let
  pkgs = import &lt;nixpkgs&gt; {};
in
  pkgs.overridePackages (self: super: ...)
</programlisting>
     should be replaced by:
<programlisting>
let
  pkgs = import &lt;nixpkgs&gt; {};
in
  import pkgs.path { overlays = [(self: super: ...)]; }
</programlisting>
    </para>
   </listitem>
   <listitem>
    <para>
     Autoloading connection tracking helpers is now disabled by default. This
     default was also changed in the Linux kernel and is considered insecure if
     not configured properly in your firewall. If you need connection tracking
     helpers (i.e. for active FTP) please enable
     <literal>networking.firewall.autoLoadConntrackHelpers</literal> and tune
     <literal>networking.firewall.connectionTrackingModules</literal> to suit
     your needs.
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>local_recipient_maps</literal> is not set to empty value by
     Postfix service. It's an insecure default as stated by Postfix
     documentation. Those who want to retain this setting need to set it via
     <literal>services.postfix.extraConfig</literal>.
    </para>
   </listitem>
   <listitem>
    <para>
     Iputils no longer provide ping6 and traceroute6. The functionality of
     these tools has been integrated into ping and traceroute respectively. To
     enforce an address family the new flags <literal>-4</literal> and
     <literal>-6</literal> have been added. One notable incompatibility is that
     specifying an interface (for link-local IPv6 for instance) is no longer
     done with the <literal>-I</literal> flag, but by encoding the interface
     into the address (<literal>ping fe80::1%eth0</literal>).
    </para>
   </listitem>
   <listitem>
    <para>
     The socket handling of the <literal>services.rmilter</literal> module has
     been fixed and refactored. As rmilter doesn't support binding to more than
     one socket, the options <literal>bindUnixSockets</literal> and
     <literal>bindInetSockets</literal> have been replaced by
     <literal>services.rmilter.bindSocket.*</literal>. The default is still a
     unix socket in <literal>/run/rmilter/rmilter.sock</literal>. Refer to the
     options documentation for more information.
    </para>
   </listitem>
   <listitem>
    <para>
     The <literal>fetch*</literal> functions no longer support md5, please use
     sha256 instead.
    </para>
   </listitem>
   <listitem>
    <para>
     The dnscrypt-proxy module interface has been streamlined around the
     <option>extraArgs</option> option. Where possible, legacy option
     declarations are mapped to <option>extraArgs</option> but will emit
     warnings. The <option>resolverList</option> has been outright removed: to
     use an unlisted resolver, use the <option>customResolver</option> option.
    </para>
   </listitem>
   <listitem>
    <para>
     torbrowser now stores local state under
     <filename>~/.local/share/tor-browser</filename> by default. Any browser
     profile data from the old location, <filename>~/.torbrowser4</filename>,
     must be migrated manually.
    </para>
   </listitem>
   <listitem>
    <para>
     The ihaskell, monetdb, offlineimap and sitecopy services have been
     removed.
    </para>
   </listitem>
  </itemizedlist>
 </section>

 <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-17.03-notable-changes">
  <title>Other Notable Changes</title>

  <itemizedlist>
   <listitem>
    <para>
     Module type system have a new extensible option types feature that allow
     to extend certain types, such as enum, through multiple option
     declarations of the same option across multiple modules.
    </para>
   </listitem>
   <listitem>
    <para>
     <literal>jre</literal> now defaults to GTK+ UI by default. This improves
     visual consistency and makes Java follow system font style, improving the
     situation on HighDPI displays. This has a cost of increased closure size;
     for server and other headless workloads it's recommended to use
     <literal>jre_headless</literal>.
    </para>
   </listitem>
   <listitem>
    <para>
     Python 2.6 interpreter and package set have been removed.
    </para>
   </listitem>
   <listitem>
    <para>
     The Python 2.7 interpreter does not use modules anymore. Instead, all
     CPython interpreters now include the whole standard library except for
     `tkinter`, which is available in the Python package set.
    </para>
   </listitem>
   <listitem>
    <para>
     Python 2.7, 3.5 and 3.6 are now built deterministically and 3.4 mostly.
     Minor modifications had to be made to the interpreters in order to
     generate deterministic bytecode. This has security implications and is
     relevant for those using Python in a <literal>nix-shell</literal>. See the
     Nixpkgs manual for details.
    </para>
   </listitem>
   <listitem>
    <para>
     The Python package sets now use a fixed-point combinator and the sets are
     available as attributes of the interpreters.
    </para>
   </listitem>
   <listitem>
    <para>
     The Python function <literal>buildPythonPackage</literal> has been
     improved and can be used to build from Setuptools source, Flit source, and
     precompiled Wheels.
    </para>
   </listitem>
   <listitem>
    <para>
     When adding new or updating current Python libraries, the expressions
     should be put in separate files in
     <literal>pkgs/development/python-modules</literal> and called from
     <literal>python-packages.nix</literal>.
    </para>
   </listitem>
   <listitem>
    <para>
     The dnscrypt-proxy service supports synchronizing the list of public
     resolvers without working DNS resolution. This fixes issues caused by the
     resolver list becoming outdated. It also improves the viability of
     DNSCrypt only configurations.
    </para>
   </listitem>
   <listitem>
    <para>
     Containers using bridged networking no longer lose their connection after
     changes to the host networking.
    </para>
   </listitem>
   <listitem>
    <para>
     ZFS supports pool auto scrubbing.
    </para>
   </listitem>
   <listitem>
    <para>
     The bind DNS utilities (e.g. dig) have been split into their own output
     and are now also available in <literal>pkgs.dnsutils</literal> and it is
     no longer necessary to pull in all of <literal>bind</literal> to use them.
    </para>
   </listitem>
   <listitem>
    <para>
     Per-user configuration was moved from <filename>~/.nixpkgs</filename> to
     <filename>~/.config/nixpkgs</filename>. The former is still valid for
     <filename>config.nix</filename> for backwards compatibility.
    </para>
   </listitem>
  </itemizedlist>
 </section>
</section>
