365 lines
13 KiB
XML
365 lines
13 KiB
XML
<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-release-20.09">
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<title>Release 20.09 (“Nightingale”, 2020.09/??)</title>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-release-20.09-highlights">
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<title>Highlights</title>
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<para>
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In addition to numerous new and upgraded packages, this release has the
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following highlights:
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Support is planned until the end of April 2021, handing over to 21.03.
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</para>
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</listitem>
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<listitem>
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<para>GNOME desktop environment was upgraded to 3.36, see its <link xlink:href="https://help.gnome.org/misc/release-notes/3.36/">release notes</link>.</para>
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</listitem>
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<listitem>
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<para>
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We now distribute a GNOME ISO.
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</para>
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</listitem>
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<listitem>
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<para>
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PHP now defaults to PHP 7.4, updated from 7.3.
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</para>
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</listitem>
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<listitem>
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<para>
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Two new options, <link linkend="opt-services.openssh.authorizedKeysCommand">authorizedKeysCommand</link>
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and <link linkend="opt-services.openssh.authorizedKeysCommandUser">authorizedKeysCommandUser</link>, have
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been added to the <literal>openssh</literal> module. If you have <literal>AuthorizedKeysCommand</literal>
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in your <link linkend="opt-services.openssh.extraConfig">services.openssh.extraConfig</link> you should
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make use of these new options instead.
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</para>
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</listitem>
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<listitem>
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<para>
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There is a new module for Podman(<varname>virtualisation.podman</varname>), a drop-in replacement for the Docker command line.
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</para>
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</listitem>
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<listitem>
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<para>
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The new <varname>virtualisation.containers</varname> module manages configuration shared by the CRI-O and Podman modules.
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</para>
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</listitem>
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<listitem>
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<para>
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Declarative Docker containers are renamed from <varname>docker-containers</varname> to <varname>virtualisation.oci-containers.containers</varname>.
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This is to make it possible to use <literal>podman</literal> instead of <literal>docker</literal>.
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</para>
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</listitem>
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</itemizedlist>
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</section>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-release-20.09-new-services">
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<title>New Services</title>
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<para>
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The following new services were added since the last release:
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</para>
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<itemizedlist>
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<listitem>
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<para>
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There is a new <xref linkend="opt-security.doas.enable"/> module that provides <command>doas</command>, a lighter alternative to <command>sudo</command> with many of the same features.
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</para>
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</listitem>
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</itemizedlist>
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</section>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-release-20.09-incompatibilities">
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<title>Backward Incompatibilities</title>
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<para>
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When upgrading from a previous release, please be aware of the following
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incompatible changes:
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</para>
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<itemizedlist>
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<listitem>
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<para>
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Grafana is now built without support for phantomjs by default. Phantomjs support has been
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<link xlink:href="https://grafana.com/docs/grafana/latest/guides/whats-new-in-v6-4/">deprecated in Grafana</link>
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and the <package>phantomjs</package> project is
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<link xlink:href="https://github.com/ariya/phantomjs/issues/15344#issue-302015362">currently unmaintained</link>.
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It can still be enabled by providing <literal>phantomJsSupport = true</literal> to the package instanciation:
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<programlisting>{
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services.grafana.package = pkgs.grafana.overrideAttrs (oldAttrs: rec {
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phantomJsSupport = false;
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});
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}</programlisting>
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</para>
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</listitem>
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<listitem>
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<para>
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The <link linkend="opt-services.supybot.enable">supybot</link> module now uses <literal>/var/lib/supybot</literal>
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as its default <link linkend="opt-services.supybot.stateDir">stateDir</link> path if <literal>stateVersion</literal>
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is 20.09 or higher. It also enables number of
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<link xlink:href="https://www.freedesktop.org/software/systemd/man/systemd.exec.html#Sandboxing">systemd sandboxing options</link>
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which may possibly interfere with some plugins. If this is the case you can disable the options through attributes in
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<option>systemd.services.supybot.serviceConfig</option>.
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</para>
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</listitem>
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<listitem>
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<para>
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The <literal>security.duosec.skey</literal> option, which stored a secret in the
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nix store, has been replaced by a new
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<link linkend="opt-security.duosec.secretKeyFile">security.duosec.secretKeyFile</link>
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option for better security.
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</para>
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<para>
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<literal>security.duosec.ikey</literal> has been renamed to
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<link linkend="opt-security.duosec.integrationKey">security.duosec.integrationKey</link>.
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</para>
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</listitem>
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<listitem>
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<para>
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The initrd SSH support now uses OpenSSH rather than Dropbear to
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allow the use of Ed25519 keys and other OpenSSH-specific
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functionality. Host keys must now be in the OpenSSH format, and at
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least one pre-generated key must be specified.
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</para>
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<para>
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If you used the <option>boot.initrd.network.ssh.host*Key</option>
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options, you'll get an error explaining how to convert your host
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keys and migrate to the new
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<option>boot.initrd.network.ssh.hostKeys</option> option.
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Otherwise, if you don't have any host keys set, you'll need to
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generate some; see the <option>hostKeys</option> option
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documentation for instructions.
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</para>
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</listitem>
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<listitem>
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<para>
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Since this release there's an easy way to customize your PHP
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install to get a much smaller base PHP with only wanted
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extensions enabled. See the following snippet installing a
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smaller PHP with the extensions <literal>imagick</literal>,
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<literal>opcache</literal>, <literal>pdo</literal> and
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<literal>pdo_mysql</literal> loaded:
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<programlisting>
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environment.systemPackages = [
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(pkgs.php.withExtensions
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({ all, ... }: with all; [
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imagick
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opcache
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pdo
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pdo_mysql
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])
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)
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];</programlisting>
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The default <literal>php</literal> attribute hasn't lost any
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extensions. The <literal>opcache</literal> extension has been
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added.
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All upstream PHP extensions are available under <package><![CDATA[php.extensions.<name?>]]></package>.
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</para>
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<para>
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All PHP <literal>config</literal> flags have been removed for
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the following reasons:
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<itemizedlist>
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<listitem>
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<para>
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The updated <literal>php</literal> attribute is now easily
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customizable to your liking by using
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<literal>php.withExtensions</literal> or
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<literal>php.buildEnv</literal> instead of writing config files
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or changing configure flags.
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</para>
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</listitem>
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<listitem>
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<para>
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The remaining configuration flags can now be set directly on
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the <literal>php</literal> attribute. For example, instead of
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<programlisting>
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php.override {
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config.php.embed = true;
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config.php.apxs2 = false;
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}
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</programlisting>
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you should now write
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<programlisting>
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php.override {
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embedSupport = true;
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apxs2Support = false;
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}
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</programlisting>
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</para>
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</listitem>
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</itemizedlist>
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</para>
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</listitem>
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<listitem>
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<para>
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Gollum received a major update to version 5.x and you may have to change
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some links in your wiki when migrating from gollum 4.x. More information
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can be found
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<link xlink:href="https://github.com/gollum/gollum/wiki/5.0-release-notes#migrating-your-wiki">here</link>.
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</para>
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</listitem>
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<listitem>
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<para>
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Deluge 2.x was added and is used as default for new NixOS
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installations where stateVersion is >= 20.09. If you are upgrading from a previous
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NixOS version, you can set <literal>service.deluge.package = pkgs.deluge-2_x</literal>
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to upgrade to Deluge 2.x and migrate the state to the new format.
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Be aware that backwards state migrations are not supported by Deluge.
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</para>
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</listitem>
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<listitem>
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<para>
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The NixOS options <literal>nesting.clone</literal> and
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<literal>nesting.children</literal> have been deleted, and
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replaced with named <xref linkend="opt-specialisation"/>
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configurations.
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</para>
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<para>
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Replace a <literal>nesting.clone</literal> entry with:
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<programlisting>{
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<link xlink:href="#opt-specialisation">specialisation.example-sub-configuration</link> = {
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<link xlink:href="#opt-specialisation._name_.configuration">configuration</link> = {
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...
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};
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};</programlisting>
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</para>
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<para>
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Replace a <literal>nesting.children</literal> entry with:
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<programlisting>{
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<link xlink:href="#opt-specialisation">specialisation.example-sub-configuration</link> = {
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<link xlink:href="#opt-specialisation._name_.inheritParentConfig">inheritParentConfig</link> = false;
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<link xlink:href="#opt-specialisation._name_.configuration">configuration</link> = {
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...
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};
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};</programlisting>
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</para>
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<para>
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To switch to a specialised configuration at runtime you need to
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run:
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<programlisting>
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# sudo /run/current-system/specialisation/example-sub-configuration/bin/switch-to-configuration test
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</programlisting>
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Before you would have used:
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<programlisting>
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# sudo /run/current-system/fine-tune/child-1/bin/switch-to-configuration test
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</programlisting>
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</para>
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</listitem>
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<listitem>
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<para>
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The httpd web server previously started its main process as root
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privileged, then ran worker processes as a less privileged identity user.
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This was changed to start all of httpd as a less privileged user (defined by
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<xref linkend="opt-services.httpd.user"/> and
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<xref linkend="opt-services.httpd.group"/>). As a consequence, all files that
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are needed for httpd to run (included configuration fragments, SSL
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certificates and keys, etc.) must now be readable by this less privileged
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user/group.
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</para>
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<para>
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The default value for <xref linkend="opt-services.httpd.mpm"/>
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has been changed from <literal>prefork</literal> to <literal>event</literal>. Along with
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this change the default value for
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<link linkend="opt-services.httpd.virtualHosts">services.httpd.virtualHosts.<name>.http2</link>
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has been set to <literal>true</literal>.
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</para>
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</listitem>
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<listitem>
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<para>
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The <literal>systemd-networkd</literal> option
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<literal>systemd.network.networks.<name>.dhcp.CriticalConnection</literal>
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has been removed following upstream systemd's deprecation of the same. It is recommended to use
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<literal>systemd.network.networks.<name>.networkConfig.KeepConfiguration</literal> instead.
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See <citerefentry><refentrytitle>systemd.network</refentrytitle>
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<manvolnum>5</manvolnum></citerefentry> for details.
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</para>
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</listitem>
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<listitem>
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<para>
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The <literal>systemd-networkd</literal> option
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<literal>systemd.network.networks._name_.dhcpConfig</literal>
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has been renamed to
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<xref linkend="opt-systemd.network.networks._name_.dhcpV4Config"/>
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following upstream systemd's documentation change.
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See <citerefentry><refentrytitle>systemd.network</refentrytitle>
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<manvolnum>5</manvolnum></citerefentry> for details.
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</para>
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</listitem>
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<listitem>
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<para>
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In the <literal>picom</literal> module, several options that accepted
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floating point numbers encoded as strings (for example
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<xref linkend="opt-services.picom.activeOpacity"/>) have been changed
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to the (relatively) new native <literal>float</literal> type. To migrate
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your configuration simply remove the quotes around the numbers.
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</para>
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</listitem>
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</itemizedlist>
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</section>
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<section xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-release-20.09-notable-changes">
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<title>Other Notable Changes</title>
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<itemizedlist>
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<listitem>
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<para>
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<option>services.journald.rateLimitBurst</option> was updated from
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<literal>1000</literal> to <literal>10000</literal> to follow the new
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upstream systemd default.
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</para>
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</listitem>
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<listitem>
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<para>
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The <package>notmuch</package> package move its emacs-related binaries and
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emacs lisp files to a separate output. They're not part
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of the default <literal>out</literal> output anymore - if you relied on the
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<literal>notmuch-emacs-mua</literal> binary or the emacs lisp files, access them via
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the <literal>notmuch.emacs</literal> output.
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</para>
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</listitem>
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<listitem>
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<para>
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The default output of <literal>buildGoPackage</literal> is now <literal>$out</literal> instead of <literal>$bin</literal>.
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</para>
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</listitem>
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</itemizedlist>
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</section>
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</section>
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