nixpkgs/nixos/doc/manual/release-notes/rl-1709.xml

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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-17.09">
<title>Release 17.09 (“Hummingbird”, 2017/09/??)</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.
</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 <option>services.xserver.xrandrHeads</option> 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:
<programlisting>
{ services.xserver.xrandrHeads = [
"HDMI-0"
{
output = &quot;DVI-0&quot;;
primary = true;
monitorConfig = ''
Option &quot;Rotate&quot; &quot;right&quot;
'';
}
];
}
</programlisting>
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 nginx module has been cleaned up, renaming
the misnomed <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.
</para>
<para>
Options to configure <literal>resolver</literal>s and
<literal>upstream</literal>s 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 option has been replaced by a more generic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>
<para>The following new services were added since the last release:</para>
<itemizedlist>
<listitem>
<para></para>
</listitem>
</itemizedlist>
<para>When upgrading from a previous release, please be aware of the
following incompatible changes:</para>
<itemizedlist>
<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 ipfs package 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
<programlisting>
dataDir=&lt;valueOfDataDir&gt;
mv /var/lib/ipfs/.ipfs/* $dataDir
rmdir /var/lib/ipfs/.ipfs
</programlisting>
</para>
</listitem>
<listitem>
<para>
The following changes apply if the <literal>stateVersion</literal> is changed to 17.09 or higher.
For <literal>stateVersion = "17.03</literal> or lower the old behavior is preserved.
</para>
<para>
The <literal>postgres</literal> default version was changed from 9.5 to 9.6.
</para>
<para>
The <literal>postgres</literal> superuser name has changed from <literal>root</literal> to <literal>postgres</literal> to more closely follow what other Linux distributions are doing.
</para>
<para>
The <literal>postgres</literal> default <literal>dataDir</literal> has changed from <literal>/var/db/postgres</literal> to <literal>/var/lib/postgresql/$psqlSchema</literal> where $psqlSchema is 9.6 for example.
</para>
<para>
The <literal>mysql</literal> default <literal>dataDir</literal> has changed from <literal>/var/mysql</literal> to <literal>/var/lib/mysql</literal>.
</para>
<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 <filename xlink:href="https://github.com/NixOS/nixpkgs/blob/master/nixos/tests/radicale.nix">radicale.nix</filename> NixOS test for an example migration.
</para>
</listitem>
<listitem>
<para>
The <literal>caddy</literal> service was previously using an extra
<literal>.caddy</literal> 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>'s setup-hook now exports a number of
environment variables corresponding to binutils binaries,
(e.g. <envar>LD</envar>, <envar>STRIP</envar>, <envar>RANLIB</envar>,
etc). This is done to prevent packages' 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 accomodate 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>
The <literal>gnupg</literal> package used to suffix its programs
with <literal>2</literal>, like <command>gpg2</command> and
<command>gpgv2</command>. This suffix has since been dropped,
and the programs are now simply <command>gpg</command>,
<command>gpgv</command>, etc.
</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:
<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>
</para>
</listitem>
<listitem>
<para>
<literal>sha256</literal> argument value of
<literal>dockerTools.pullImage</literal> expression must be
updated since the mechanism to download the image has been
changed. Skopeo is now used to pull the image instead of the
Docker daemon.
</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>
<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
<command>systemctl start mysql-backup</command> then
<command>systemctl status mysql-backup</command>.
</para>
</listitem>
</itemizedlist>
<para>Other notable improvements:</para>
<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 <option>time.timeZone</option> option now allows the value
<literal>null</literal> in addition to timezone strings. This value
allows changing the timezone of a system imperatively using
<command>timedatectl set-timezone</command>. 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></literal> may be a file, and
<filename>~/.config/nixpkgs/overlays.nix</filename> can be used instead of the
<filename>~/.config/nixpkgs/overalys</filename> directory.
</para>
<para>
See the overlays chapter of the Nixpkgs manual for more details.
</para>
</listitem>
<listitem>
<para>
Definitions for <filename>/etc/hosts</filename> 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>
<para>
<literal>services.gitlab-runner.configOptions</literal> has been added
to specify the configuration of gitlab-runners declaratively.
</para>
<para>
<literal>services.jenkins.plugins</literal> has been added
to install plugins easily, this can be generated with jenkinsPlugins2nix.
</para>
<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>
<para>
The GitLab package and module have been updated to the latest 9.5 release.
</para>
<para>
The <literal>systemd-boot</literal> boot loader now lists the NixOS
version, kernel version and build date of all bootable generations.
</para>
</listitem>
</itemizedlist>
</section>