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-<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-18.09">
- <title>Release 18.09 (“Jellyfish”, 2018/10/05)</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-18.09-highlights">
-  <title>Highlights</title>
-
-  <para>
-   In addition to numerous new and upgraded packages, this release has the
-   following notable updates:
-  </para>
-
-  <itemizedlist>
-   <listitem>
-    <para>
-     End of support is planned for end of April 2019, handing over to 19.03.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     Platform support: x86_64-linux and x86_64-darwin as always. Support for
-     aarch64-linux is as with the previous releases, not equivalent to the
-     x86-64-linux release, but with efforts to reach parity.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     Nix has been updated to 2.1; see its
-     <link xlink:href="https://nixos.org/nix/manual/#ssec-relnotes-2.1">release
-     notes</link>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     Core versions: linux: 4.14 LTS (unchanged), glibc: 2.26 → 2.27, gcc: 7
-     (unchanged), systemd: 237 → 239.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     Desktop version changes: gnome: 3.26 → 3.28, (KDE) plasma-desktop: 5.12
-     → 5.13.
-    </para>
-   </listitem>
-  </itemizedlist>
-
-  <para>
-   Notable changes and additions for 18.09 include:
-  </para>
-
-  <itemizedlist>
-   <listitem>
-    <para>
-     Support for wrapping binaries using <literal>firejail</literal> has been
-     added through <varname>programs.firejail.wrappedBinaries</varname>.
-    </para>
-    <para>
-     For example
-    </para>
-<programlisting>
-programs.firejail = {
-  enable = true;
-  wrappedBinaries = {
-    firefox = "${lib.getBin pkgs.firefox}/bin/firefox";
-    mpv = "${lib.getBin pkgs.mpv}/bin/mpv";
-  };
-};
-</programlisting>
-    <para>
-     This will place <literal>firefox</literal> and <literal>mpv</literal>
-     binaries in the global path wrapped by firejail.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     User channels are now in the default <literal>NIX_PATH</literal>, allowing
-     users to use their personal <command>nix-channel</command> defined
-     channels in <command>nix-build</command> and <command>nix-shell</command>
-     commands, as well as in imports like <code>import
-     &lt;mychannel&gt;</code>.
-    </para>
-    <para>
-     For example
-    </para>
-<programlisting>
-$ nix-channel --add https://nixos.org/channels/nixpkgs-unstable nixpkgsunstable
-$ nix-channel --update
-$ nix-build '&lt;nixpkgsunstable&gt;' -A gitFull
-$ nix run -f '&lt;nixpkgsunstable&gt;' gitFull
-$ nix-instantiate -E '(import &lt;nixpkgsunstable&gt; {}).gitFull'
-</programlisting>
-   </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-18.09-new-services">
-  <title>New Services</title>
-
-  <para>
-   A curated selection of new services that were added since the last release:
-  </para>
-
-  <itemizedlist>
-   <listitem>
-    <para>
-     The <varname>services.cassandra</varname> module has been reworked and was
-     rewritten from scratch. The service has succeeding tests for the versions
-     2.1, 2.2, 3.0 and 3.11 of
-     <link
-     xlink:href="https://cassandra.apache.org/">Apache
-     Cassandra</link>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     There is a new <varname>services.foundationdb</varname> module for
-     deploying
-     <link xlink:href="https://www.foundationdb.org">FoundationDB</link>
-     clusters.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     When enabled the <literal>iproute2</literal> will copy the files expected
-     by ip route (e.g., <filename>rt_tables</filename>) in
-     <filename>/etc/iproute2</filename>. This allows to write aliases for
-     routing tables for instance.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <varname>services.strongswan-swanctl</varname> is a modern replacement for
-     <varname>services.strongswan</varname>. You can use either one of them to
-     setup IPsec VPNs but not both at the same time.
-    </para>
-    <para>
-     <varname>services.strongswan-swanctl</varname> uses the
-     <link xlink:href="https://wiki.strongswan.org/projects/strongswan/wiki/swanctl">swanctl</link>
-     command which uses the modern
-     <link xlink:href="https://github.com/strongswan/strongswan/blob/master/src/libcharon/plugins/vici/README.md">vici</link>
-     <emphasis>Versatile IKE Configuration Interface</emphasis>. The deprecated
-     <literal>ipsec</literal> command used in
-     <varname>services.strongswan</varname> is using the legacy
-     <link xlink:href="https://github.com/strongswan/strongswan/blob/master/README_LEGACY.md">stroke
-     configuration interface</link>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The new <varname>services.elasticsearch-curator</varname> service
-     periodically curates or manages, your Elasticsearch indices and snapshots.
-    </para>
-   </listitem>
-  </itemizedlist>
-
-  <para>
-   Every new services:
-  </para>
-
-  <itemizedlist>
-   <listitem>
-    <para>
-     <literal>./config/xdg/autostart.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./config/xdg/icons.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./config/xdg/menus.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./config/xdg/mime.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./hardware/brightnessctl.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./hardware/onlykey.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./hardware/video/uvcvideo/default.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./misc/documentation.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./programs/firejail.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./programs/iftop.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./programs/sedutil.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./programs/singularity.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./programs/xss-lock.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./programs/zsh/zsh-autosuggestions.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/admin/oxidized.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/backup/duplicati.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/backup/restic.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/backup/restic-rest-server.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/cluster/hadoop/default.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/databases/aerospike.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/databases/monetdb.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/desktops/bamf.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/desktops/flatpak.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/desktops/zeitgeist.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/development/bloop.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/development/jupyter/default.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/hardware/lcd.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/hardware/undervolt.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/misc/clipmenu.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/misc/gitweb.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/misc/serviio.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/misc/safeeyes.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/misc/sysprof.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/misc/weechat.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/monitoring/datadog-agent.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/monitoring/incron.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/dnsdist.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/freeradius.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/hans.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/morty.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/ndppd.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/ocserv.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/owamp.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/quagga.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/shadowsocks.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/stubby.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/networking/zeronet.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/security/certmgr.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/security/cfssl.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/security/oauth2_proxy_nginx.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/web-apps/virtlyst.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/web-apps/youtrack.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/web-servers/hitch/default.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/web-servers/hydron.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/web-servers/meguca.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./services/web-servers/nginx/gitweb.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./virtualisation/kvmgt.nix</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>./virtualisation/qemu-guest-agent.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-18.09-incompatibilities">
-  <title>Backward Incompatibilities</title>
-
-  <para>
-   When upgrading from a previous release, please be aware of the following
-   incompatible changes:
-  </para>
-
-  <itemizedlist>
-   <listitem>
-    <para>
-     Some licenses that were incorrectly not marked as unfree now are. This is
-     the case for:
-     <itemizedlist>
-      <listitem>
-       <para>
-        cc-by-nc-sa-20: Creative Commons Attribution Non Commercial Share Alike
-        2.0
-       </para>
-      </listitem>
-      <listitem>
-       <para>
-        cc-by-nc-sa-25: Creative Commons Attribution Non Commercial Share Alike
-        2.5
-       </para>
-      </listitem>
-      <listitem>
-       <para>
-        cc-by-nc-sa-30: Creative Commons Attribution Non Commercial Share Alike
-        3.0
-       </para>
-      </listitem>
-      <listitem>
-       <para>
-        cc-by-nc-sa-40: Creative Commons Attribution Non Commercial Share Alike
-        4.0
-       </para>
-      </listitem>
-      <listitem>
-       <para>
-        cc-by-nd-30: Creative Commons Attribution-No Derivative Works v3.00
-       </para>
-      </listitem>
-      <listitem>
-       <para>
-        msrla: Microsoft Research License Agreement
-       </para>
-      </listitem>
-     </itemizedlist>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The deprecated <varname>services.cassandra</varname> module has seen a
-     complete rewrite. (See above.)
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>lib.strict</literal> is removed. Use
-     <literal>builtins.seq</literal> instead.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The <literal>clementine</literal> package points now to the free
-     derivation. <literal>clementineFree</literal> is removed now and
-     <literal>clementineUnfree</literal> points to the package which is bundled
-     with the unfree <literal>libspotify</literal> package.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The <literal>netcat</literal> package is now taken directly from OpenBSD's
-     <literal>libressl</literal>, instead of relying on Debian's fork. The new
-     version should be very close to the old version, but there are some minor
-     differences. Importantly, flags like -b, -q, -C, and -Z are no longer
-     accepted by the nc command.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The <varname>services.docker-registry.extraConfig</varname> object doesn't
-     contain environment variables anymore. Instead it needs to provide an
-     object structure that can be mapped onto the YAML configuration defined in
-     <link xlink:href="https://github.com/docker/distribution/blob/v2.6.2/docs/configuration.md">the
-     <varname>docker/distribution</varname> docs</link>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>gnucash</literal> has changed from version 2.4 to 3.x. If you've
-     been using <literal>gnucash</literal> (version 2.4) instead of
-     <literal>gnucash26</literal> (version 2.6) you must open your Gnucash data
-     file(s) with <literal>gnucash26</literal> and then save them to upgrade
-     the file format. Then you may use your data file(s) with Gnucash 3.x. See
-     the upgrade
-     <link xlink:href="https://wiki.gnucash.org/wiki/FAQ#Using_Different_Versions.2C_Up_And_Downgrade">documentation</link>.
-     Gnucash 2.4 is still available under the attribute
-     <literal>gnucash24</literal>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <varname>services.munge</varname> now runs as user (and group)
-     <literal>munge</literal> instead of root. Make sure the key file is
-     accessible to the daemon.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <varname>dockerTools.buildImage</varname> now uses <literal>null</literal>
-     as default value for <varname>tag</varname>, which indicates that the nix
-     output hash will be used as tag.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The ELK stack: <varname>elasticsearch</varname>,
-     <varname>logstash</varname> and <varname>kibana</varname> has been
-     upgraded from 2.* to 6.3.*. The 2.* versions have been
-     <link xlink:href="https://www.elastic.co/support/eol">unsupported since
-     last year</link> so they have been removed. You can still use the 5.*
-     versions under the names <varname>elasticsearch5</varname>,
-     <varname>logstash5</varname> and <varname>kibana5</varname>.
-    </para>
-    <para>
-     The elastic beats: <varname>filebeat</varname>,
-     <varname>heartbeat</varname>, <varname>metricbeat</varname> and
-     <varname>packetbeat</varname> have had the same treatment: they now target
-     6.3.* as well. The 5.* versions are available under the names:
-     <varname>filebeat5</varname>, <varname>heartbeat5</varname>,
-     <varname>metricbeat5</varname> and <varname>packetbeat5</varname>
-    </para>
-    <para>
-     The ELK-6.3 stack now comes with
-     <link xlink:href="https://www.elastic.co/products/x-pack/open">X-Pack by
-     default</link>. Since X-Pack is licensed under the
-     <link xlink:href="https://github.com/elastic/elasticsearch/blob/master/licenses/ELASTIC-LICENSE.txt">Elastic
-     License</link> the ELK packages now have an unfree license. To use them
-     you need to specify <literal>allowUnfree = true;</literal> in your nixpkgs
-     configuration.
-    </para>
-    <para>
-     Fortunately there is also a free variant of the ELK stack without X-Pack.
-     The packages are available under the names:
-     <varname>elasticsearch-oss</varname>, <varname>logstash-oss</varname> and
-     <varname>kibana-oss</varname>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     Options
-     <literal>boot.initrd.luks.devices.<replaceable>name</replaceable>.yubikey.ramfsMountPoint</literal>
-     <literal>boot.initrd.luks.devices.<replaceable>name</replaceable>.yubikey.storage.mountPoint</literal>
-     were removed. <literal>luksroot.nix</literal> module never supported more
-     than one YubiKey at a time anyway, hence those options never had any
-     effect. You should be able to remove them from your config without any
-     issues.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>stdenv.system</literal> and <literal>system</literal> in nixpkgs
-     now refer to the host platform instead of the build platform. For native
-     builds this is not change, let alone a breaking one. For cross builds, it
-     is a breaking change, and <literal>stdenv.buildPlatform.system</literal>
-     can be used instead for the old behavior. They should be using that
-     anyways for clarity.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     Groups <literal>kvm</literal> and <literal>render</literal> are introduced
-     now, as systemd requires them.
-    </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-18.09-notable-changes">
-  <title>Other Notable Changes</title>
-
-  <itemizedlist>
-   <listitem>
-    <para>
-     <literal>dockerTools.pullImage</literal> relies on image digest instead of
-     image tag to download the image. The <literal>sha256</literal> of a pulled
-     image has to be updated.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>lib.attrNamesToStr</literal> has been deprecated. Use more
-     specific concatenation (<literal>lib.concat(Map)StringsSep</literal>)
-     instead.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>lib.addErrorContextToAttrs</literal> has been deprecated. Use
-     <literal>builtins.addErrorContext</literal> directly.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>lib.showVal</literal> has been deprecated. Use
-     <literal>lib.traceSeqN</literal> instead.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>lib.traceXMLVal</literal> has been deprecated. Use
-     <literal>lib.traceValFn builtins.toXml</literal> instead.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>lib.traceXMLValMarked</literal> has been deprecated. Use
-     <literal>lib.traceValFn (x: str + builtins.toXML x)</literal> instead.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The <literal>pkgs</literal> argument to NixOS modules can now be set
-     directly using <literal>nixpkgs.pkgs</literal>. Previously, only the
-     <literal>system</literal>, <literal>config</literal> and
-     <literal>overlays</literal> arguments could be used to influence
-     <literal>pkgs</literal>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     A NixOS system can now be constructed more easily based on a preexisting
-     invocation of Nixpkgs. For example:
-<programlisting>
-inherit (pkgs.nixos {
-  boot.loader.grub.enable = false;
-  fileSystems."/".device = "/dev/xvda1";
-}) toplevel kernel initialRamdisk manual;
-      </programlisting>
-     This benefits evaluation performance, lets you write Nixpkgs packages that
-     depend on NixOS images and is consistent with a deployment architecture
-     that would be centered around Nixpkgs overlays.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>lib.traceValIfNot</literal> has been deprecated. Use
-     <literal>if/then/else</literal> and <literal>lib.traceValSeq</literal>
-     instead.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>lib.traceCallXml</literal> has been deprecated. Please complain
-     if you use the function regularly.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The attribute <literal>lib.nixpkgsVersion</literal> has been deprecated in
-     favor of <literal>lib.version</literal>. Please refer to the discussion in
-     <link xlink:href="https://github.com/NixOS/nixpkgs/pull/39416#discussion_r183845745">NixOS/nixpkgs#39416</link>
-     for further reference.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>lib.recursiveUpdateUntil</literal> was not acting according to
-     its specification. It has been fixed to act according to the docstring,
-     and a test has been added.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The module for <option>security.dhparams</option> has two new options now:
-    </para>
-    <variablelist>
-     <varlistentry>
-      <term>
-       <option>security.dhparams.stateless</option>
-      </term>
-      <listitem>
-       <para>
-        Puts the generated Diffie-Hellman parameters into the Nix store instead
-        of managing them in a stateful manner in
-        <filename class="directory">/var/lib/dhparams</filename>.
-       </para>
-      </listitem>
-     </varlistentry>
-     <varlistentry>
-      <term>
-       <option>security.dhparams.defaultBitSize</option>
-      </term>
-      <listitem>
-       <para>
-        The default bit size to use for the generated Diffie-Hellman
-        parameters.
-       </para>
-      </listitem>
-     </varlistentry>
-    </variablelist>
-    <note>
-     <para>
-      The path to the actual generated parameter files should now be queried
-      using
-      <literal>config.security.dhparams.params.<replaceable>name</replaceable>.path</literal>
-      because it might be either in the Nix store or in a directory configured
-      by <option>security.dhparams.path</option>.
-     </para>
-    </note>
-    <note>
-     <title>For developers:</title>
-     <para>
-      Module implementers should not set a specific bit size in order to let
-      users configure it by themselves if they want to have a different bit
-      size than the default (2048).
-     </para>
-     <para>
-      An example usage of this would be:
-<programlisting>
-{ config, ... }:
-
-{
-  security.dhparams.params.myservice = {};
-  environment.etc."myservice.conf".text = ''
-    dhparams = ${config.security.dhparams.params.myservice.path}
-  '';
-}
-</programlisting>
-     </para>
-    </note>
-   </listitem>
-   <listitem>
-    <para>
-     <literal>networking.networkmanager.useDnsmasq</literal> has been
-     deprecated. Use <literal>networking.networkmanager.dns</literal> instead.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The Kubernetes package has been bumped to major version 1.11. Please
-     consult the
-     <link xlink:href="https://github.com/kubernetes/kubernetes/blob/release-1.11/CHANGELOG-1.11.md">release
-     notes</link> for details on new features and api changes.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The option
-     <varname>services.kubernetes.apiserver.admissionControl</varname> was
-     renamed to
-     <varname>services.kubernetes.apiserver.enableAdmissionPlugins</varname>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     Recommended way to access the Kubernetes Dashboard is via HTTPS (TLS)
-     Therefore; public service port for the dashboard has changed to 443
-     (container port 8443) and scheme to https.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The option <varname>services.kubernetes.apiserver.address</varname> was
-     renamed to <varname>services.kubernetes.apiserver.bindAddress</varname>.
-     Note that the default value has changed from 127.0.0.1 to 0.0.0.0.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The option <varname>services.kubernetes.apiserver.publicAddress</varname>
-     was not used and thus has been removed.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The option
-     <varname>services.kubernetes.addons.dashboard.enableRBAC</varname> was
-     renamed to
-     <varname>services.kubernetes.addons.dashboard.rbac.enable</varname>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The Kubernetes Dashboard now has only minimal RBAC permissions by default.
-     If dashboard cluster-admin rights are desired, set
-     <varname>services.kubernetes.addons.dashboard.rbac.clusterAdmin</varname>
-     to true. On existing clusters, in order for the revocation of privileges
-     to take effect, the current ClusterRoleBinding for kubernetes-dashboard
-     must be manually removed: <literal>kubectl delete clusterrolebinding
-     kubernetes-dashboard</literal>
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The <varname>programs.screen</varname> module provides allows to configure
-     <literal>/etc/screenrc</literal>, however the module behaved fairly
-     counterintuitive as the config exists, but the package wasn't available.
-     Since 18.09 <literal>pkgs.screen</literal> will be added to
-     <literal>environment.systemPackages</literal>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The module <option>services.networking.hostapd</option> now uses WPA2 by
-     default.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     <varname>s6Dns</varname>, <varname>s6Networking</varname>,
-     <varname>s6LinuxUtils</varname> and <varname>s6PortableUtils</varname>
-     renamed to <varname>s6-dns</varname>, <varname>s6-networking</varname>,
-     <varname>s6-linux-utils</varname> and <varname>s6-portable-utils</varname>
-     respectively.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The module option <option>nix.useSandbox</option> is now defaulted to
-     <literal>true</literal>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The config activation script of <literal>nixos-rebuild</literal> now
-     <link xlink:href="https://www.freedesktop.org/software/systemd/man/systemctl.html#Manager%20Lifecycle%20Commands">reloads</link>
-     all user units for each authenticated user.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     The default display manager is now LightDM. To use SLiM set
-     <literal>services.xserver.displayManager.slim.enable</literal> to
-     <literal>true</literal>.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     NixOS option descriptions are now automatically broken up into individual
-     paragraphs if the text contains two consecutive newlines, so it's no
-     longer necessary to use <code>&lt;/para&gt;&lt;para&gt;</code> to start a
-     new paragraph.
-    </para>
-   </listitem>
-   <listitem>
-    <para>
-     Top-level <literal>buildPlatform</literal>,
-     <literal>hostPlatform</literal>, and <literal>targetPlatform</literal> in
-     Nixpkgs are deprecated. Please use their equivalents in
-     <literal>stdenv</literal> instead:
-     <literal>stdenv.buildPlatform</literal>,
-     <literal>stdenv.hostPlatform</literal>, and
-     <literal>stdenv.targetPlatform</literal>.
-    </para>
-   </listitem>
-  </itemizedlist>
- </section>
-</section>