nixos/manual: remove md-to-db

with manual chapters no longer needing pandoc for their conversion to
xml we can get rid of this source of confusion, and its huge cache of
xml files.

1 files changed, 0 insertions, 922 deletions

diff --git a/nixos/doc/manual/from_md/release-notes/rl-1709.section.xml b/nixos/doc/manual/from_md/release-notes/rl-1709.section.xml
deleted file mode 100644
index 849ec868c78..00000000000
--- a/nixos/doc/manual/from_md/release-notes/rl-1709.section.xml
+++ /dev/null
@@ -1,922 +0,0 @@
-<section xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="sec-release-17.09">
-  <title>Release 17.09 (<quote>Hummingbird</quote>, 2017/09/??)</title>
-  <section xml:id="sec-release-17.09-highlights">
-    <title>Highlights</title>
-    <para>
-      In addition to numerous new and upgraded packages, this release
-      has the following highlights:
-    </para>
-    <itemizedlist>
-      <listitem>
-        <para>
-          The GNOME version is now 3.24. KDE Plasma was upgraded to
-          5.10, KDE Applications to 17.08.1 and KDE Frameworks to 5.37.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The user handling now keeps track of deallocated UIDs/GIDs.
-          When a user or group is revived, this allows it to be
-          allocated the UID/GID it had before. A consequence is that
-          UIDs and GIDs are no longer reused.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The module option
-          <literal>services.xserver.xrandrHeads</literal> now causes the
-          first head specified in this list to be set as the primary
-          head. Apart from that, it’s now possible to also set
-          additional options by using an attribute set, for example:
-        </para>
-        <programlisting language="nix">
-{ services.xserver.xrandrHeads = [
-    &quot;HDMI-0&quot;
-    {
-      output = &quot;DVI-0&quot;;
-      primary = true;
-      monitorConfig = ''
-        Option &quot;Rotate&quot; &quot;right&quot;
-      '';
-    }
-  ];
-}
-</programlisting>
-        <para>
-          This will set the <literal>DVI-0</literal> output to be the
-          primary head, even though <literal>HDMI-0</literal> is the
-          first head in the list.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The handling of SSL in the <literal>services.nginx</literal>
-          module has been cleaned up, renaming the misnamed
-          <literal>enableSSL</literal> to <literal>onlySSL</literal>
-          which reflects its original intention. This is not to be used
-          with the already existing <literal>forceSSL</literal> which
-          creates a second non-SSL virtual host redirecting to the SSL
-          virtual host. This by chance had worked earlier due to
-          specific implementation details. In case you had specified
-          both please remove the <literal>enableSSL</literal> option to
-          keep the previous behaviour.
-        </para>
-        <para>
-          Another <literal>addSSL</literal> option has been introduced
-          to configure both a non-SSL virtual host and an SSL virtual
-          host with the same configuration.
-        </para>
-        <para>
-          Options to configure <literal>resolver</literal> options and
-          <literal>upstream</literal> blocks have been introduced. See
-          their information for further details.
-        </para>
-        <para>
-          The <literal>port</literal> option has been replaced by a more
-          generic <literal>listen</literal> option which makes it
-          possible to specify multiple addresses, ports and SSL configs
-          dependant on the new SSL handling mentioned above.
-        </para>
-      </listitem>
-    </itemizedlist>
-  </section>
-  <section xml:id="sec-release-17.09-new-services">
-    <title>New Services</title>
-    <para>
-      The following new services were added since the last release:
-    </para>
-    <itemizedlist>
-      <listitem>
-        <para>
-          <literal>config/fonts/fontconfig-penultimate.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>config/fonts/fontconfig-ultimate.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>config/terminfo.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>hardware/sensor/iio.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>hardware/nitrokey.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>hardware/raid/hpsa.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>programs/browserpass.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>programs/gnupg.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>programs/qt5ct.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>programs/slock.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>programs/thefuck.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>security/auditd.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>security/lock-kernel-modules.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>service-managers/docker.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>service-managers/trivial.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/admin/salt/master.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/admin/salt/minion.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/audio/slimserver.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/cluster/kubernetes/default.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/cluster/kubernetes/dns.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/cluster/kubernetes/dashboard.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/continuous-integration/hail.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/databases/clickhouse.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/databases/postage.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/desktops/gnome3/gnome-disks.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/desktops/gnome3/gpaste.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/logging/SystemdJournal2Gelf.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/logging/heartbeat.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/logging/journalwatch.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/logging/syslogd.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/mail/mailhog.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/mail/nullmailer.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/misc/airsonic.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/misc/autorandr.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/misc/exhibitor.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/misc/fstrim.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/misc/gollum.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/misc/irkerd.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/misc/jackett.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/misc/radarr.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/misc/snapper.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/monitoring/osquery.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/monitoring/prometheus/collectd-exporter.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/monitoring/prometheus/fritzbox-exporter.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/network-filesystems/kbfs.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/networking/dnscache.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/networking/fireqos.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/networking/iwd.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/networking/keepalived/default.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/networking/keybase.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/networking/lldpd.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/networking/matterbridge.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/networking/squid.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/networking/tinydns.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/networking/xrdp.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/security/shibboleth-sp.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/security/sks.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/security/sshguard.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/security/torify.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/security/usbguard.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/security/vault.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/system/earlyoom.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/system/saslauthd.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/web-apps/nexus.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/web-apps/pgpkeyserver-lite.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/web-apps/piwik.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/web-servers/lighttpd/collectd.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/web-servers/minio.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/x11/display-managers/xpra.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services/x11/xautolock.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>tasks/filesystems/bcachefs.nix</literal>
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>tasks/powertop.nix</literal>
-        </para>
-      </listitem>
-    </itemizedlist>
-  </section>
-  <section xml:id="sec-release-17.09-incompatibilities">
-    <title>Backward Incompatibilities</title>
-    <para>
-      When upgrading from a previous release, please be aware of the
-      following incompatible changes:
-    </para>
-    <itemizedlist>
-      <listitem>
-        <para>
-          <emphasis role="strong">In an Qemu-based virtualization
-          environment, the network interface names changed from i.e.
-          <literal>enp0s3</literal> to
-          <literal>ens3</literal>.</emphasis>
-        </para>
-        <para>
-          This is due to a kernel configuration change. The new naming
-          is consistent with those of other Linux distributions with
-          systemd. See
-          <link xlink:href="https://github.com/NixOS/nixpkgs/issues/29197">#29197</link>
-          for more information.
-        </para>
-        <para>
-          A machine is affected if the <literal>virt-what</literal> tool
-          either returns <literal>qemu</literal> or
-          <literal>kvm</literal> <emphasis>and</emphasis> has interface
-          names used in any part of its NixOS configuration, in
-          particular if a static network configuration with
-          <literal>networking.interfaces</literal> is used.
-        </para>
-        <para>
-          Before rebooting affected machines, please ensure:
-        </para>
-        <itemizedlist>
-          <listitem>
-            <para>
-              Change the interface names in your NixOS configuration.
-              The first interface will be called
-              <literal>ens3</literal>, the second one
-              <literal>ens8</literal> and starting from there
-              incremented by 1.
-            </para>
-          </listitem>
-          <listitem>
-            <para>
-              After changing the interface names, rebuild your system
-              with <literal>nixos-rebuild boot</literal> to activate the
-              new configuration after a reboot. If you switch to the new
-              configuration right away you might lose network
-              connectivity! If using <literal>nixops</literal>, deploy
-              with <literal>nixops deploy --force-reboot</literal>.
-            </para>
-          </listitem>
-        </itemizedlist>
-      </listitem>
-      <listitem>
-        <para>
-          The following changes apply if the
-          <literal>stateVersion</literal> is changed to 17.09 or higher.
-          For <literal>stateVersion = &quot;17.03&quot;</literal> or
-          lower the old behavior is preserved.
-        </para>
-        <itemizedlist>
-          <listitem>
-            <para>
-              The <literal>postgres</literal> default version was
-              changed from 9.5 to 9.6.
-            </para>
-          </listitem>
-          <listitem>
-            <para>
-              The <literal>postgres</literal> superuser name has changed
-              from <literal>root</literal> to
-              <literal>postgres</literal> to more closely follow what
-              other Linux distributions are doing.
-            </para>
-          </listitem>
-          <listitem>
-            <para>
-              The <literal>postgres</literal> default
-              <literal>dataDir</literal> has changed from
-              <literal>/var/db/postgres</literal> to
-              <literal>/var/lib/postgresql/$psqlSchema</literal> where
-              $psqlSchema is 9.6 for example.
-            </para>
-          </listitem>
-          <listitem>
-            <para>
-              The <literal>mysql</literal> default
-              <literal>dataDir</literal> has changed from
-              <literal>/var/mysql</literal> to
-              <literal>/var/lib/mysql</literal>.
-            </para>
-          </listitem>
-          <listitem>
-            <para>
-              Radicale’s default package has changed from 1.x to 2.x.
-              Instructions to migrate can be found
-              <link xlink:href="http://radicale.org/1to2/"> here
-              </link>. It is also possible to use the newer version by
-              setting the <literal>package</literal> to
-              <literal>radicale2</literal>, which is done automatically
-              when <literal>stateVersion</literal> is 17.09 or higher.
-              The <literal>extraArgs</literal> option has been added to
-              allow passing the data migration arguments specified in
-              the instructions; see the <literal>radicale.nix</literal>
-              NixOS test for an example migration.
-            </para>
-          </listitem>
-        </itemizedlist>
-      </listitem>
-      <listitem>
-        <para>
-          The <literal>aiccu</literal> package was removed. This is due
-          to SixXS <link xlink:href="https://www.sixxs.net/main/">
-          sunsetting</link> its IPv6 tunnel.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The <literal>fanctl</literal> package and
-          <literal>fan</literal> module have been removed due to the
-          developers not upstreaming their iproute2 patches and lagging
-          with compatibility to recent iproute2 versions.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          Top-level <literal>idea</literal> package collection was
-          renamed. All JetBrains IDEs are now at
-          <literal>jetbrains</literal>.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>flexget</literal>’s state database cannot be upgraded
-          to its new internal format, requiring removal of any existing
-          <literal>db-config.sqlite</literal> which will be
-          automatically recreated.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The <literal>ipfs</literal> service now doesn’t ignore the
-          <literal>dataDir</literal> option anymore. If you’ve ever set
-          this option to anything other than the default you’ll have to
-          either unset it (so the default gets used) or migrate the old
-          data manually with
-        </para>
-        <programlisting>
-dataDir=&lt;valueOfDataDir&gt;
-mv /var/lib/ipfs/.ipfs/* $dataDir
-rmdir /var/lib/ipfs/.ipfs
-</programlisting>
-      </listitem>
-      <listitem>
-        <para>
-          The <literal>caddy</literal> service was previously using an
-          extra <literal>.caddy</literal> directory in the data
-          directory specified with the <literal>dataDir</literal>
-          option. The contents of the <literal>.caddy</literal>
-          directory are now expected to be in the
-          <literal>dataDir</literal>.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The <literal>ssh-agent</literal> user service is not started
-          by default anymore. Use
-          <literal>programs.ssh.startAgent</literal> to enable it if
-          needed. There is also a new
-          <literal>programs.gnupg.agent</literal> module that creates a
-          <literal>gpg-agent</literal> user service. It can also serve
-          as a SSH agent if <literal>enableSSHSupport</literal> is set.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The
-          <literal>services.tinc.networks.&lt;name&gt;.listenAddress</literal>
-          option had a misleading name that did not correspond to its
-          behavior. It now correctly defines the ip to listen for
-          incoming connections on. To keep the previous behaviour, use
-          <literal>services.tinc.networks.&lt;name&gt;.bindToAddress</literal>
-          instead. Refer to the description of the options for more
-          details.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>tlsdate</literal> package and module were removed.
-          This is due to the project being dead and not building with
-          openssl 1.1.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>wvdial</literal> package and module were removed.
-          This is due to the project being dead and not building with
-          openssl 1.1.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>cc-wrapper</literal><quote>s setup-hook now exports a
-          number of environment variables corresponding to binutils
-          binaries, (e.g. <literal>LD</literal>,
-          <literal>STRIP</literal>, <literal>RANLIB</literal>, etc).
-          This is done to prevent packages</quote> build systems
-          guessing, which is harder to predict, especially when
-          cross-compiling. However, some packages have broken due to
-          this—their build systems either not supporting, or claiming to
-          support without adequate testing, taking such environment
-          variables as parameters.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services.firefox.syncserver</literal> now runs by
-          default as a non-root user. To accommodate this change, the
-          default sqlite database location has also been changed.
-          Migration should work automatically. Refer to the description
-          of the options for more details.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The <literal>compiz</literal> window manager and package was
-          removed. The system support had been broken for several years.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          Touchpad support should now be enabled through
-          <literal>libinput</literal> as <literal>synaptics</literal> is
-          now deprecated. See the option
-          <literal>services.xserver.libinput.enable</literal>.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          grsecurity/PaX support has been dropped, following upstream’s
-          decision to cease free support. See
-          <link xlink:href="https://grsecurity.net/passing_the_baton.php">
-          upstream’s announcement</link> for more information. No
-          complete replacement for grsecurity/PaX is available
-          presently.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services.mysql</literal> now has declarative
-          configuration of databases and users with the
-          <literal>ensureDatabases</literal> and
-          <literal>ensureUsers</literal> options.
-        </para>
-        <para>
-          These options will never delete existing databases and users,
-          especially not when the value of the options are changed.
-        </para>
-        <para>
-          The MySQL users will be identified using
-          <link xlink:href="https://mariadb.com/kb/en/library/authentication-plugin-unix-socket/">
-          Unix socket authentication</link>. This authenticates the Unix
-          user with the same name only, and that without the need for a
-          password.
-        </para>
-        <para>
-          If you have previously created a MySQL <literal>root</literal>
-          user <emphasis>with a password</emphasis>, you will need to
-          add <literal>root</literal> user for unix socket
-          authentication before using the new options. This can be done
-          by running the following SQL script:
-        </para>
-        <programlisting language="SQL">
-CREATE USER 'root'@'%' IDENTIFIED BY '';
-GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;
-FLUSH PRIVILEGES;
-
--- Optionally, delete the password-authenticated user:
--- DROP USER 'root'@'localhost';
-</programlisting>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services.mysqlBackup</literal> now works by default
-          without any user setup, including for users other than
-          <literal>mysql</literal>.
-        </para>
-        <para>
-          By default, the <literal>mysql</literal> user is no longer the
-          user which performs the backup. Instead a system account
-          <literal>mysqlbackup</literal> is used.
-        </para>
-        <para>
-          The <literal>mysqlBackup</literal> service is also now using
-          systemd timers instead of <literal>cron</literal>.
-        </para>
-        <para>
-          Therefore, the <literal>services.mysqlBackup.period</literal>
-          option no longer exists, and has been replaced with
-          <literal>services.mysqlBackup.calendar</literal>, which is in
-          the format of
-          <link xlink:href="https://www.freedesktop.org/software/systemd/man/systemd.time.html#Calendar%20Events">systemd.time(7)</link>.
-        </para>
-        <para>
-          If you expect to be sent an e-mail when the backup fails,
-          consider using a script which monitors the systemd journal for
-          errors. Regretfully, at present there is no built-in
-          functionality for this.
-        </para>
-        <para>
-          You can check that backups still work by running
-          <literal>systemctl start mysql-backup</literal> then
-          <literal>systemctl status mysql-backup</literal>.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          Templated systemd services e.g
-          <literal>container@name</literal> are now handled currectly
-          when switching to a new configuration, resulting in them being
-          reloaded.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          Steam: the <literal>newStdcpp</literal> parameter was removed
-          and should not be needed anymore.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          Redis has been updated to version 4 which mandates a cluster
-          mass-restart, due to changes in the network handling, in order
-          to ensure compatibility with networks NATing traffic.
-        </para>
-      </listitem>
-    </itemizedlist>
-  </section>
-  <section xml:id="sec-release-17.09-notable-changes">
-    <title>Other Notable Changes</title>
-    <itemizedlist>
-      <listitem>
-        <para>
-          Modules can now be disabled by using
-          <link xlink:href="https://nixos.org/nixpkgs/manual/#sec-replace-modules">
-          disabledModules</link>, allowing another to take it’s place.
-          This can be used to import a set of modules from another
-          channel while keeping the rest of the system on a stable
-          release.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          Updated to FreeType 2.7.1, including a new TrueType engine.
-          The new engine replaces the Infinality engine which was the
-          default in NixOS. The default font rendering settings are now
-          provided by fontconfig-penultimate, replacing
-          fontconfig-ultimate; the new defaults are less invasive and
-          provide rendering that is more consistent with other systems
-          and hopefully with each font designer’s intent. Some
-          system-wide configuration has been removed from the Fontconfig
-          NixOS module where user Fontconfig settings are available.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          ZFS/SPL have been updated to 0.7.0,
-          <literal>zfsUnstable, splUnstable</literal> have therefore
-          been removed.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The <literal>time.timeZone</literal> option now allows the
-          value <literal>null</literal> in addition to timezone strings.
-          This value allows changing the timezone of a system
-          imperatively using
-          <literal>timedatectl set-timezone</literal>. The default
-          timezone is still UTC.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          Nixpkgs overlays may now be specified with a file as well as a
-          directory. The value of
-          <literal>&lt;nixpkgs-overlays&gt;</literal> may be a file, and
-          <literal>~/.config/nixpkgs/overlays.nix</literal> can be used
-          instead of the <literal>~/.config/nixpkgs/overlays</literal>
-          directory.
-        </para>
-        <para>
-          See the overlays chapter of the Nixpkgs manual for more
-          details.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          Definitions for <literal>/etc/hosts</literal> can now be
-          specified declaratively with
-          <literal>networking.hosts</literal>.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          Two new options have been added to the installer loader, in
-          addition to the default having changed. The kernel log
-          verbosity has been lowered to the upstream default for the
-          default options, in order to not spam the console when e.g.
-          joining a network.
-        </para>
-        <para>
-          This therefore leads to adding a new <literal>debug</literal>
-          option to set the log level to the previous verbose mode, to
-          make debugging easier, but still accessible easily.
-        </para>
-        <para>
-          Additionally a <literal>copytoram</literal> option has been
-          added, which makes it possible to remove the install medium
-          after booting. This allows tethering from your phone after
-          booting from it.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services.gitlab-runner.configOptions</literal> has
-          been added to specify the configuration of gitlab-runners
-          declaratively.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services.jenkins.plugins</literal> has been added to
-          install plugins easily, this can be generated with
-          jenkinsPlugins2nix.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          <literal>services.postfix.config</literal> has been added to
-          specify the main.cf with NixOS options. Additionally other
-          options have been added to the postfix module and has been
-          improved further.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The GitLab package and module have been updated to the latest
-          10.0 release.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The <literal>systemd-boot</literal> boot loader now lists the
-          NixOS version, kernel version and build date of all bootable
-          generations.
-        </para>
-      </listitem>
-      <listitem>
-        <para>
-          The dnscrypt-proxy service now defaults to using a random
-          upstream resolver, selected from the list of public
-          non-logging resolvers with DNSSEC support. Existing
-          configurations can be migrated to this mode of operation by
-          omitting the
-          <literal>services.dnscrypt-proxy.resolverName</literal> option
-          or setting it to <literal>&quot;random&quot;</literal>.
-        </para>
-      </listitem>
-    </itemizedlist>
-  </section>
-</section>