159 lines
6.0 KiB
XML
159 lines
6.0 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-20.03">
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<title>Release 20.03 (“Markhor”, 2020.03/??)</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-20.03-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 October 2020, handing over to 20.09.
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</para>
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</listitem>
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<listitem>
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<para>
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Postgresql for NixOS service now defaults to v11.
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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 graphical installer image starts the graphical session automatically.
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Before you'd be greeted by a tty and asked to enter <command>systemctl start display-manager</command>.
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It is now possible to disable the display-manager from running by selecting the <literal>Disable display-manager</literal>
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quirk in the boot menu.
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</para>
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</listitem>
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<listitem>
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<para>
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By default zfs pools will now be trimmed on a weekly basis.
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Trimming is only done on supported devices (i.e. NVME or SSDs)
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and should improve throughput and lifetime of these devices.
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It is controlled by the <varname>services.zfs.trim.enable</varname> varname.
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The zfs scrub service (<varname>services.zfs.autoScrub.enable</varname>)
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and the zfs autosnapshot service (<varname>services.zfs.autoSnapshot.enable</varname>)
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are now only enabled if zfs is set in <varname>config.boot.initrd.supportedFilesystems</varname> or
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<varname>config.boot.supportedFilesystems</varname>. These lists will automatically contain
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zfs as soon as any zfs mountpoint is configured in <varname>fileSystems</varname>.
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</para>
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</listitem>
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<listitem>
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<para>
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<command>nixos-option</command> has been rewritten in C++, speeding it up, improving correctness,
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and adding a <option>--all</option> option which prints all options and their values.
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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-20.03-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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</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-20.03-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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GnuPG is now built without support for a graphical passphrase entry
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by default. Please enable the <literal>gpg-agent</literal> user service
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via the NixOS option <literal>programs.gnupg.agent.enable</literal>.
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Note that upstream recommends using <literal>gpg-agent</literal> and
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will spawn a <literal>gpg-agent</literal> on the first invocation of
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GnuPG anyway.
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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>dynamicHosts</literal> option has been removed from the
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<link linkend="opt-networking.networkmanager.enable">networkd</link>
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module. Allowing (multiple) regular users to override host entries
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affecting the whole system opens up a huge attack vector.
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There seem to be very rare cases where this might be useful.
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Consider setting system-wide host entries using
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<link linkend="opt-networking.hosts">networking.hosts</link>, provide
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them via the DNS server in your network, or use
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<link linkend="opt-environment.etc">environment.etc</link>
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to add a file into <literal>/etc/NetworkManager/dnsmasq.d</literal>
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reconfiguring <literal>hostsdir</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>99-main.network</literal> file was removed. Maching all
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network interfaces caused many breakages, see
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<link xlink:href="https://github.com/NixOS/nixpkgs/pull/18962">#18962</link>
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and <link xlink:href="https://github.com/NixOS/nixpkgs/pull/71106">#71106</link>.
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</para>
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<para>
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We already don't support the global <link linkend="opt-networking.useDHCP">networking.useDHCP</link>,
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<link linkend="opt-networking.defaultGateway">networking.defaultGateway</link> and
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<link linkend="opt-networking.defaultGateway6">networking.defaultGateway6</link> options
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if <link linkend="opt-networking.useNetworkd">networking.useNetworkd</link> is enabled,
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but direct users to configure the per-device
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<link linkend="opt-networking.interfaces">networking.interfaces.<name>.…</link> options.
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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-20.03-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>SD images are now compressed by default using <literal>bzip2</literal>.</para>
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</listitem>
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<listitem>
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<para>
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OpenSSH has been upgraded from 7.9 to 8.1, improving security and adding features
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but with potential incompatibilities. Consult the
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<link xlink:href="https://www.openssh.com/txt/release-8.1">
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release announcement</link> for more information.
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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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