nixpkgs-suyu/nixos/doc/manual/from_md/release-notes/rl-1909.section.xml
David Arnold 1f6969dd5e
docs: nixos release notes (w/o 2105 - separate PR)
docs: nixos release notes (revise code blocks)

docs: nixos release notes (fix opt links outside of code blocks)

docs: nixos release notes (fix opt links inside of code blocks)

went fishing with:

```console
rg -A1 \
   --multiline \
   --multiline-dotall \
   '<programlisting>[^</programlisting>]+' \
| rg linkend
```

docs: nixos release notes (prettier)

docs: nixos release notes (fix zonefile codeblocks)

docs: nixos release notes (restore admonition from prettier destriction)

docs: nixos release notes (recreate xml files)

docs: nixos release notes (fix trnslation error md -> xml)

admonition with a title seem not to work

docs: nixos release notes (fix code block indentation)

docs: nixos release notes (diff after converting with https://github.com/NixOS/nixpkgs/pull/127270)

docs: nixos release notes (fix remaingin '???')

Those where not catched i a previous iteration since they didn't satisfy
the then presumed search regex `#opt-.*`

doc: nixos release notes make docbook/md conversion consistent
2021-06-22 09:52:13 -05:00

1197 lines
48 KiB
XML

<section xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="sec-release-19.09">
<title>Release 19.09 (<quote>Loris</quote>, 2019/10/09)</title>
<section xml:id="sec-release-19.09-highlights">
<title>Highlights</title>
<para>
In addition to numerous new and upgraded packages, this release
has the following highlights:
</para>
<itemizedlist>
<listitem>
<para>
End of support is planned for end of April 2020, handing over
to 20.03.
</para>
</listitem>
<listitem>
<para>
Nix has been updated to 2.3; see its
<link xlink:href="https://nixos.org/nix/manual/#ssec-relnotes-2.3">release
notes</link>.
</para>
</listitem>
<listitem>
<para>
Core version changes:
</para>
<para>
systemd: 239 -&gt; 243
</para>
<para>
gcc: 7 -&gt; 8
</para>
<para>
glibc: 2.27 (unchanged)
</para>
<para>
linux: 4.19 LTS (unchanged)
</para>
<para>
openssl: 1.0 -&gt; 1.1
</para>
</listitem>
<listitem>
<para>
Desktop version changes:
</para>
<para>
plasma5: 5.14 -&gt; 5.16
</para>
<para>
gnome3: 3.30 -&gt; 3.32
</para>
</listitem>
<listitem>
<para>
PHP now defaults to PHP 7.3, updated from 7.2.
</para>
</listitem>
<listitem>
<para>
PHP 7.1 is no longer supported due to upstream not supporting
this version for the entire lifecycle of the 19.09 release.
</para>
</listitem>
<listitem>
<para>
The binfmt module is now easier to use. Additional systems can
be added through
<literal>boot.binfmt.emulatedSystems</literal>. For instance,
<literal>boot.binfmt.emulatedSystems = [ &quot;wasm32-wasi&quot; &quot;x86_64-windows&quot; &quot;aarch64-linux&quot; ];</literal>
will set up binfmt interpreters for each of those listed
systems.
</para>
</listitem>
<listitem>
<para>
The installer now uses a less privileged
<literal>nixos</literal> user whereas before we logged in as
root. To gain root privileges use <literal>sudo -i</literal>
without a password.
</para>
</listitem>
<listitem>
<para>
We've updated to Xfce 4.14, which brings a new module
<literal>services.xserver.desktopManager.xfce4-14</literal>.
If you'd like to upgrade, please switch from the
<literal>services.xserver.desktopManager.xfce</literal> module
as it will be deprecated in a future release. They're
incompatibilities with the current Xfce module; it doesn't
support <literal>thunarPlugins</literal> and it isn't
recommended to use
<literal>services.xserver.desktopManager.xfce</literal> and
<literal>services.xserver.desktopManager.xfce4-14</literal>
simultaneously or to downgrade from Xfce 4.14 after upgrading.
</para>
</listitem>
<listitem>
<para>
The GNOME 3 desktop manager module sports an interface to
enable/disable core services, applications, and optional GNOME
packages like games.
</para>
<itemizedlist>
<listitem>
<para>
<literal>services.gnome3.core-os-services.enable</literal>
</para>
</listitem>
<listitem>
<para>
<literal>services.gnome3.core-shell.enable</literal>
</para>
</listitem>
<listitem>
<para>
<literal>services.gnome3.core-utilities.enable</literal>
</para>
</listitem>
<listitem>
<para>
<literal>services.gnome3.games.enable</literal>
</para>
</listitem>
</itemizedlist>
<para>
With these options we hope to give users finer grained control
over their systems. Prior to this change you'd either have to
manually disable options or use
<literal>environment.gnome3.excludePackages</literal> which
only excluded the optional applications.
<literal>environment.gnome3.excludePackages</literal> is now
unguarded, it can exclude any package installed with
<literal>environment.systemPackages</literal> in the GNOME 3
module.
</para>
</listitem>
<listitem>
<para>
Orthogonal to the previous changes to the GNOME 3 desktop
manager module, we've updated all default services and
applications to match as close as possible to a default
reference GNOME 3 experience.
</para>
<para>
<emphasis role="strong">The following changes were enacted in
<literal>services.gnome3.core-utilities.enable</literal></emphasis>
</para>
<itemizedlist>
<listitem>
<para>
<literal>accerciser</literal>
</para>
</listitem>
<listitem>
<para>
<literal>dconf-editor</literal>
</para>
</listitem>
<listitem>
<para>
<literal>evolution</literal>
</para>
</listitem>
<listitem>
<para>
<literal>gnome-documents</literal>
</para>
</listitem>
<listitem>
<para>
<literal>gnome-nettool</literal>
</para>
</listitem>
<listitem>
<para>
<literal>gnome-power-manager</literal>
</para>
</listitem>
<listitem>
<para>
<literal>gnome-todo</literal>
</para>
</listitem>
<listitem>
<para>
<literal>gnome-tweaks</literal>
</para>
</listitem>
<listitem>
<para>
<literal>gnome-usage</literal>
</para>
</listitem>
<listitem>
<para>
<literal>gucharmap</literal>
</para>
</listitem>
<listitem>
<para>
<literal>nautilus-sendto</literal>
</para>
</listitem>
<listitem>
<para>
<literal>vinagre</literal>
</para>
</listitem>
<listitem>
<para>
<literal>cheese</literal>
</para>
</listitem>
<listitem>
<para>
<literal>geary</literal>
</para>
</listitem>
</itemizedlist>
<para>
<emphasis role="strong">The following changes were enacted in
<literal>services.gnome3.core-shell.enable</literal></emphasis>
</para>
<itemizedlist>
<listitem>
<para>
<literal>gnome-color-manager</literal>
</para>
</listitem>
<listitem>
<para>
<literal>orca</literal>
</para>
</listitem>
<listitem>
<para>
<literal>services.avahi.enable</literal>
</para>
</listitem>
</itemizedlist>
</listitem>
</itemizedlist>
</section>
<section xml:id="sec-release-19.09-new-services">
<title>New Services</title>
<para>
The following new services were added since the last release:
</para>
<itemizedlist>
<listitem>
<para>
<literal>./programs/dwm-status.nix</literal>
</para>
</listitem>
<listitem>
<para>
The new <literal>hardware.printers</literal> module allows to
declaratively configure CUPS printers via the
<literal>ensurePrinters</literal> and
<literal>ensureDefaultPrinter</literal> options.
<literal>ensurePrinters</literal> will never delete existing
printers, but will make sure that the given printers are
configured as declared.
</para>
</listitem>
<listitem>
<para>
There is a new
<link xlink:href="options.html#opt-services.system-config-printer.enable">services.system-config-printer.enable</link>
and
<link xlink:href="options.html#opt-programs.system-config-printer.enable">programs.system-config-printer.enable</link>
module for the program of the same name. If you previously had
<literal>system-config-printer</literal> enabled through some
other means you should migrate to using one of these modules.
</para>
<itemizedlist>
<listitem>
<para>
<literal>services.xserver.desktopManager.plasma5</literal>
</para>
</listitem>
<listitem>
<para>
<literal>services.xserver.desktopManager.gnome3</literal>
</para>
</listitem>
<listitem>
<para>
<literal>services.xserver.desktopManager.pantheon</literal>
</para>
</listitem>
<listitem>
<para>
<literal>services.xserver.desktopManager.mate</literal>
Note Mate uses
<literal>programs.system-config-printer</literal> as it
doesn't use it as a service, but its graphical interface
directly.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-services.blueman.enable">services.blueman.enable</link>
has been added. If you previously had blueman installed via
<literal>environment.systemPackages</literal> please migrate
to using the NixOS module, as this would result in an
insufficiently configured blueman.
</para>
</listitem>
</itemizedlist>
</section>
<section xml:id="sec-release-19.09-incompatibilities">
<title>Backward Incompatibilities</title>
<para>
When upgrading from a previous release, please be aware of the
following incompatible changes:
</para>
<itemizedlist>
<listitem>
<para>
Buildbot no longer supports Python 2, as support was dropped
upstream in version 2.0.0. Configurations may need to be
modified to make them compatible with Python 3.
</para>
</listitem>
<listitem>
<para>
PostgreSQL now uses <literal>/run/postgresql</literal> as its
socket directory instead of <literal>/tmp</literal>. So if you
run an application like eg. Nextcloud, where you need to use
the Unix socket path as the database host name, you need to
change it accordingly.
</para>
</listitem>
<listitem>
<para>
PostgreSQL 9.4 is scheduled EOL during the 19.09 life cycle
and has been removed.
</para>
</listitem>
<listitem>
<para>
The options
<literal>services.prometheus.alertmanager.user</literal> and
<literal>services.prometheus.alertmanager.group</literal> have
been removed because the alertmanager service is now using
systemd's
<link xlink:href="http://0pointer.net/blog/dynamic-users-with-systemd.html">
DynamicUser mechanism</link> which obviates these options.
</para>
</listitem>
<listitem>
<para>
The NetworkManager systemd unit was renamed back from
network-manager.service to NetworkManager.service for better
compatibility with other applications expecting this name. The
same applies to ModemManager where modem-manager.service is
now called ModemManager.service again.
</para>
</listitem>
<listitem>
<para>
The <literal>services.nzbget.configFile</literal> and
<literal>services.nzbget.openFirewall</literal> options were
removed as they are managed internally by the nzbget. The
<literal>services.nzbget.dataDir</literal> option hadn't
actually been used by the module for some time and so was
removed as cleanup.
</para>
</listitem>
<listitem>
<para>
The <literal>services.mysql.pidDir</literal> option was
removed, as it was only used by the wordpress apache-httpd
service to wait for mysql to have started up. This can be
accomplished by either describing a dependency on
mysql.service (preferred) or waiting for the (hardcoded)
<literal>/run/mysqld/mysql.sock</literal> file to appear.
</para>
</listitem>
<listitem>
<para>
The <literal>services.emby.enable</literal> module has been
removed, see <literal>services.jellyfin.enable</literal>
instead for a free software fork of Emby. See the Jellyfin
documentation:
<link xlink:href="https://jellyfin.readthedocs.io/en/latest/administrator-docs/migrate-from-emby/">
Migrating from Emby to Jellyfin </link>
</para>
</listitem>
<listitem>
<para>
IPv6 Privacy Extensions are now enabled by default for
undeclared interfaces. The previous behaviour was quite
misleading — even though the default value for
<literal>networking.interfaces.*.preferTempAddress</literal>
was <literal>true</literal>, undeclared interfaces would not
prefer temporary addresses. Now, interfaces not mentioned in
the config will prefer temporary addresses. EUI64 addresses
can still be set as preferred by explicitly setting the option
to <literal>false</literal> for the interface in question.
</para>
</listitem>
<listitem>
<para>
Since Bittorrent Sync was superseded by Resilio Sync in 2016,
the <literal>bittorrentSync</literal>,
<literal>bittorrentSync14</literal>, and
<literal>bittorrentSync16</literal> packages have been removed
in favor of <literal>resilio-sync</literal>.
</para>
<para>
The corresponding module, <literal>services.btsync</literal>
has been replaced by the <literal>services.resilio</literal>
module.
</para>
</listitem>
<listitem>
<para>
The httpd service no longer attempts to start the postgresql
service. If you have come to depend on this behaviour then you
can preserve the behavior with the following configuration:
<literal>systemd.services.httpd.after = [ &quot;postgresql.service&quot; ];</literal>
</para>
<para>
The option <literal>services.httpd.extraSubservices</literal>
has been marked as deprecated. You may still use this feature,
but it will be removed in a future release of NixOS. You are
encouraged to convert any httpd subservices you may have
written to a full NixOS module.
</para>
<para>
Most of the httpd subservices packaged with NixOS have been
replaced with full NixOS modules including LimeSurvey,
WordPress, and Zabbix. These modules can be enabled using the
<literal>services.limesurvey.enable</literal>,
<literal>services.mediawiki.enable</literal>,
<literal>services.wordpress.enable</literal>, and
<literal>services.zabbixWeb.enable</literal> options.
</para>
</listitem>
<listitem>
<para>
The option
<literal>systemd.network.networks.&lt;name&gt;.routes.*.routeConfig.GatewayOnlink</literal>
was renamed to
<literal>systemd.network.networks.&lt;name&gt;.routes.*.routeConfig.GatewayOnLink</literal>
(capital <literal>L</literal>). This follows
<link xlink:href="https://github.com/systemd/systemd/commit/9cb8c5593443d24c19e40bfd4fc06d672f8c554c">
upstreams renaming </link> of the setting.
</para>
</listitem>
<listitem>
<para>
As of this release the NixOps feature
<literal>autoLuks</literal> is deprecated. It no longer works
with our systemd version without manual intervention.
</para>
<para>
Whenever the usage of the module is detected the evaluation
will fail with a message explaining why and how to deal with
the situation.
</para>
<para>
A new knob named
<literal>nixops.enableDeprecatedAutoLuks</literal> has been
introduced to disable the eval failure and to acknowledge the
notice was received and read. If you plan on using the feature
please note that it might break with subsequent updates.
</para>
<para>
Make sure you set the <literal>_netdev</literal> option for
each of the file systems referring to block devices provided
by the autoLuks module. Not doing this might render the system
in a state where it doesn't boot anymore.
</para>
<para>
If you are actively using the <literal>autoLuks</literal>
module please let us know in
<link xlink:href="https://github.com/NixOS/nixpkgs/issues/62211">issue
#62211</link>.
</para>
</listitem>
<listitem>
<para>
The setopt declarations will be evaluated at the end of
<literal>/etc/zshrc</literal>, so any code in
<link xlink:href="options.html#opt-programs.zsh.interactiveShellInit">programs.zsh.interactiveShellInit</link>,
<link xlink:href="options.html#opt-programs.zsh.loginShellInit">programs.zsh.loginShellInit</link>
and
<link xlink:href="options.html#opt-programs.zsh.promptInit">programs.zsh.promptInit</link>
may break if it relies on those options being set.
</para>
</listitem>
<listitem>
<para>
The <literal>prometheus-nginx-exporter</literal> package now
uses the offical exporter provided by NGINX Inc. Its metrics
are differently structured and are incompatible to the old
ones. For information about the metrics, have a look at the
<link xlink:href="https://github.com/nginxinc/nginx-prometheus-exporter">official
repo</link>.
</para>
</listitem>
<listitem>
<para>
The <literal>shibboleth-sp</literal> package has been updated
to version 3. It is largely backward compatible, for further
information refer to the
<link xlink:href="https://wiki.shibboleth.net/confluence/display/SP3/ReleaseNotes">release
notes</link> and
<link xlink:href="https://wiki.shibboleth.net/confluence/display/SP3/UpgradingFromV2">upgrade
guide</link>.
</para>
<para>
Nodejs 8 is scheduled EOL under the lifetime of 19.09 and has
been dropped.
</para>
</listitem>
<listitem>
<para>
By default, prometheus exporters are now run with
<literal>DynamicUser</literal> enabled. Exporters that need a
real user, now run under a seperate user and group which
follow the pattern
<literal>&lt;exporter-name&gt;-exporter</literal>, instead of
the previous default <literal>nobody</literal> and
<literal>nogroup</literal>. Only some exporters are affected
by the latter, namely the exporters
<literal>dovecot</literal>, <literal>node</literal>,
<literal>postfix</literal> and <literal>varnish</literal>.
</para>
</listitem>
<listitem>
<para>
The <literal>ibus-qt</literal> package is not installed by
default anymore when
<link xlink:href="options.html#opt-i18n.inputMethod.enabled">i18n.inputMethod.enabled</link>
is set to <literal>ibus</literal>. If IBus support in Qt 4.x
applications is required, add the <literal>ibus-qt</literal>
package to your
<link xlink:href="options.html#opt-environment.systemPackages">environment.systemPackages</link>
manually.
</para>
</listitem>
<listitem>
<para>
The CUPS Printing service now uses socket-based activation by
default, only starting when needed. The previous behavior can
be restored by setting
<literal>services.cups.startWhenNeeded</literal> to
<literal>false</literal>.
</para>
</listitem>
<listitem>
<para>
The <literal>services.systemhealth</literal> module has been
removed from nixpkgs due to lack of maintainer.
</para>
</listitem>
<listitem>
<para>
The <literal>services.mantisbt</literal> module has been
removed from nixpkgs due to lack of maintainer.
</para>
</listitem>
<listitem>
<para>
Squid 3 has been removed and the <literal>squid</literal>
derivation now refers to Squid 4.
</para>
</listitem>
<listitem>
<para>
The <literal>services.pdns-recursor.extraConfig</literal>
option has been replaced by
<literal>services.pdns-recursor.settings</literal>. The new
option allows setting extra configuration while being better
type-checked and mergeable.
</para>
</listitem>
<listitem>
<para>
No service depends on <literal>keys.target</literal> anymore
which is a systemd target that indicates if all
<link xlink:href="https://nixos.org/nixops/manual/#idm140737322342384">NixOps
keys</link> were successfully uploaded. Instead,
<literal>&lt;key-name&gt;-key.service</literal> should be used
to define a dependency of a key in a service. The full issue
behind the <literal>keys.target</literal> dependency is
described at
<link xlink:href="https://github.com/NixOS/nixpkgs/issues/67265">NixOS/nixpkgs#67265</link>.
</para>
<para>
The following services are affected by this:
</para>
<itemizedlist>
<listitem>
<para>
<link xlink:href="options.html#opt-services.dovecot2.enable"><literal>services.dovecot2</literal></link>
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-services.nsd.enable"><literal>services.nsd</literal></link>
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-services.softether.enable"><literal>services.softether</literal></link>
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-services.strongswan.enable"><literal>services.strongswan</literal></link>
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-services.strongswan-swanctl.enable"><literal>services.strongswan-swanctl</literal></link>
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-services.httpd.enable"><literal>services.httpd</literal></link>
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
The <literal>security.acme.directory</literal> option has been
replaced by a read-only
<literal>security.acme.certs.&lt;cert&gt;.directory</literal>
option for each certificate you define. This will be a
subdirectory of <literal>/var/lib/acme</literal>. You can use
this read-only option to figure out where the certificates are
stored for a specific certificate. For example, the
<literal>services.nginx.virtualhosts.&lt;name&gt;.enableACME</literal>
option will use this directory option to find the certs for
the virtual host.
</para>
<para>
<literal>security.acme.preDelay</literal> and
<literal>security.acme.activationDelay</literal> options have
been removed. To execute a service before certificates are
provisioned or renewed add a
<literal>RequiredBy=acme-${cert}.service</literal> to any
service.
</para>
<para>
Furthermore, the acme module will not automatically add a
dependency on <literal>lighttpd.service</literal> anymore. If
you are using certficates provided by letsencrypt for
lighttpd, then you should depend on the certificate service
<literal>acme-${cert}.service&gt;</literal> manually.
</para>
<para>
For nginx, the dependencies are still automatically managed
when
<literal>services.nginx.virtualhosts.&lt;name&gt;.enableACME</literal>
is enabled just like before. What changed is that nginx now
directly depends on the specific certificates that it needs,
instead of depending on the catch-all
<literal>acme-certificates.target</literal>. This target unit
was also removed from the codebase. This will mean nginx will
no longer depend on certificates it isn't explicitly managing
and fixes a bug with certificate renewal ordering racing with
nginx restarting which could lead to nginx getting in a broken
state as described at
<link xlink:href="https://github.com/NixOS/nixpkgs/issues/60180">NixOS/nixpkgs#60180</link>.
</para>
</listitem>
<listitem>
<para>
The old deprecated <literal>emacs</literal> package sets have
been dropped. What used to be called
<literal>emacsPackagesNg</literal> is now simply called
<literal>emacsPackages</literal>.
</para>
</listitem>
<listitem>
<para>
<literal>services.xserver.desktopManager.xterm</literal> is
now disabled by default if <literal>stateVersion</literal> is
19.09 or higher. Previously the xterm desktopManager was
enabled when xserver was enabled, but it isn't useful for all
people so it didn't make sense to have any desktopManager
enabled default.
</para>
</listitem>
<listitem>
<para>
The WeeChat plugin
<literal>pkgs.weechatScripts.weechat-xmpp</literal> has been
removed as it doesn't receive any updates from upstream and
depends on outdated Python2-based modules.
</para>
</listitem>
<listitem>
<para>
Old unsupported versions (<literal>logstash5</literal>,
<literal>kibana5</literal>, <literal>filebeat5</literal>,
<literal>heartbeat5</literal>, <literal>metricbeat5</literal>,
<literal>packetbeat5</literal>) of the ELK-stack and Elastic
beats have been removed.
</para>
</listitem>
<listitem>
<para>
For NixOS 19.03, both Prometheus 1 and 2 were available to
allow for a seamless transition from version 1 to 2 with
existing setups. Because Prometheus 1 is no longer developed,
it was removed. Prometheus 2 is now configured with
<literal>services.prometheus</literal>.
</para>
</listitem>
<listitem>
<para>
Citrix Receiver (<literal>citrix_receiver</literal>) has been
dropped in favor of Citrix Workspace
(<literal>citrix_workspace</literal>).
</para>
</listitem>
<listitem>
<para>
The <literal>services.gitlab</literal> module has had its
literal secret options
(<literal>services.gitlab.smtp.password</literal>,
<literal>services.gitlab.databasePassword</literal>,
<literal>services.gitlab.initialRootPassword</literal>,
<literal>services.gitlab.secrets.secret</literal>,
<literal>services.gitlab.secrets.db</literal>,
<literal>services.gitlab.secrets.otp</literal> and
<literal>services.gitlab.secrets.jws</literal>) replaced by
file-based versions
(<literal>services.gitlab.smtp.passwordFile</literal>,
<literal>services.gitlab.databasePasswordFile</literal>,
<literal>services.gitlab.initialRootPasswordFile</literal>,
<literal>services.gitlab.secrets.secretFile</literal>,
<literal>services.gitlab.secrets.dbFile</literal>,
<literal>services.gitlab.secrets.otpFile</literal> and
<literal>services.gitlab.secrets.jwsFile</literal>). This was
done so that secrets aren't stored in the world-readable nix
store, but means that for each option you'll have to create a
file with the same exact string, add &quot;File&quot; to the
end of the option name, and change the definition to a string
pointing to the corresponding file; e.g.
<literal>services.gitlab.databasePassword = &quot;supersecurepassword&quot;</literal>
becomes
<literal>services.gitlab.databasePasswordFile = &quot;/path/to/secret_file&quot;</literal>
where the file <literal>secret_file</literal> contains the
string <literal>supersecurepassword</literal>.
</para>
<para>
The state path (<literal>services.gitlab.statePath</literal>)
now has the following restriction: no parent directory can be
owned by any other user than <literal>root</literal> or the
user specified in <literal>services.gitlab.user</literal>;
i.e. if <literal>services.gitlab.statePath</literal> is set to
<literal>/var/lib/gitlab/state</literal>,
<literal>gitlab</literal> and all parent directories must be
owned by either <literal>root</literal> or the user specified
in <literal>services.gitlab.user</literal>.
</para>
</listitem>
<listitem>
<para>
The <literal>networking.useDHCP</literal> option is
unsupported in combination with
<literal>networking.useNetworkd</literal> in anticipation of
defaulting to it. It has to be set to <literal>false</literal>
and enabled per interface with
<literal>networking.interfaces.&lt;name&gt;.useDHCP = true;</literal>
</para>
</listitem>
<listitem>
<para>
The Twitter client <literal>corebird</literal> has been
dropped as
<link xlink:href="https://www.patreon.com/posts/corebirds-future-18921328">it
is discontinued and does not work against the new Twitter
API</link>. Please use the fork <literal>cawbird</literal>
instead which has been adapted to the API changes and is still
maintained.
</para>
</listitem>
<listitem>
<para>
The <literal>nodejs-11_x</literal> package has been removed as
it's EOLed by upstream.
</para>
</listitem>
<listitem>
<para>
Because of the systemd upgrade, systemd-timesyncd will no
longer work if <literal>system.stateVersion</literal> is not
set correctly. When upgrading from NixOS 19.03, please make
sure that <literal>system.stateVersion</literal> is set to
<literal>&quot;19.03&quot;</literal>, or lower if the
installation dates back to an earlier version of NixOS.
</para>
</listitem>
<listitem>
<para>
Due to the short lifetime of non-LTS kernel releases package
attributes like <literal>linux_5_1</literal>,
<literal>linux_5_2</literal> and <literal>linux_5_3</literal>
have been removed to discourage dependence on specific non-LTS
kernel versions in stable NixOS releases. Going forward,
versioned attributes like <literal>linux_4_9</literal> will
exist for LTS versions only. Please use
<literal>linux_latest</literal> or
<literal>linux_testing</literal> if you depend on non-LTS
releases. Keep in mind that <literal>linux_latest</literal>
and <literal>linux_testing</literal> will change versions
under the hood during the lifetime of a stable release and
might include breaking changes.
</para>
</listitem>
<listitem>
<para>
Because of the systemd upgrade, some network interfaces might
change their name. For details see
<link xlink:href="https://www.freedesktop.org/software/systemd/man/systemd.net-naming-scheme.html#History">
upstream docs</link> or
<link xlink:href="https://github.com/NixOS/nixpkgs/issues/71086">
our ticket</link>.
</para>
</listitem>
</itemizedlist>
</section>
<section xml:id="sec-release-19.09-notable-changes">
<title>Other Notable Changes</title>
<itemizedlist>
<listitem>
<para>
The <literal>documentation</literal> module gained an option
named <literal>documentation.nixos.includeAllModules</literal>
which makes the generated configuration.nix 5 manual page
include all options from all NixOS modules included in a given
<literal>configuration.nix</literal> configuration file.
Currently, it is set to <literal>false</literal> by default as
enabling it frequently prevents evaluation. But the plan is to
eventually have it set to <literal>true</literal> by default.
Please set it to <literal>true</literal> now in your
<literal>configuration.nix</literal> and fix all the bugs it
uncovers.
</para>
</listitem>
<listitem>
<para>
The <literal>vlc</literal> package gained support for
Chromecast streaming, enabled by default. TCP port 8010 must
be open for it to work, so something like
<literal>networking.firewall.allowedTCPPorts = [ 8010 ];</literal>
may be required in your configuration. Also consider enabling
<link xlink:href="https://nixos.wiki/wiki/Accelerated_Video_Playback">
Accelerated Video Playback</link> for better transcoding
performance.
</para>
</listitem>
<listitem>
<para>
The following changes apply if the
<literal>stateVersion</literal> is changed to 19.09 or higher.
For <literal>stateVersion = &quot;19.03&quot;</literal> or
lower the old behavior is preserved.
</para>
<itemizedlist spacing="compact">
<listitem>
<para>
<literal>solr.package</literal> defaults to
<literal>pkgs.solr_8</literal>.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
The <literal>hunspellDicts.fr-any</literal> dictionary now
ships with <literal>fr_FR.{aff,dic}</literal> which is linked
to <literal>fr-toutesvariantes.{aff,dic}</literal>.
</para>
</listitem>
<listitem>
<para>
The <literal>mysql</literal> service now runs as
<literal>mysql</literal> user. Previously, systemd did execute
it as root, and mysql dropped privileges itself. This includes
<literal>ExecStartPre=</literal> and
<literal>ExecStartPost=</literal> phases. To accomplish that,
runtime and data directory setup was delegated to
RuntimeDirectory and tmpfiles.
</para>
</listitem>
<listitem>
<para>
With the upgrade to systemd version 242 the
<literal>systemd-timesyncd</literal> service is no longer
using <literal>DynamicUser=yes</literal>. In order for the
upgrade to work we rely on an activation script to move the
state from the old to the new directory. The older directory
(prior <literal>19.09</literal>) was
<literal>/var/lib/private/systemd/timesync</literal>.
</para>
<para>
As long as the <literal>system.config.stateVersion</literal>
is below <literal>19.09</literal> the state folder will
migrated to its proper location
(<literal>/var/lib/systemd/timesync</literal>), if required.
</para>
</listitem>
<listitem>
<para>
The package <literal>avahi</literal> is now built to look up
service definitions from
<literal>/etc/avahi/services</literal> instead of its output
directory in the nix store. Accordingly the module
<literal>avahi</literal> now supports custom service
definitions via
<literal>services.avahi.extraServiceFiles</literal>, which are
then placed in the aforementioned directory. See
avahi.service5 for more information on custom service
definitions.
</para>
</listitem>
<listitem>
<para>
Since version 0.1.19, <literal>cargo-vendor</literal> honors
package includes that are specified in the
<literal>Cargo.toml</literal> file of Rust crates.
<literal>rustPlatform.buildRustPackage</literal> uses
<literal>cargo-vendor</literal> to collect and build dependent
crates. Since this change in <literal>cargo-vendor</literal>
changes the set of vendored files for most Rust packages, the
hash that use used to verify the dependencies,
<literal>cargoSha256</literal>, also changes.
</para>
<para>
The <literal>cargoSha256</literal> hashes of all in-tree
derivations that use <literal>buildRustPackage</literal> have
been updated to reflect this change. However, third-party
derivations that use <literal>buildRustPackage</literal> may
have to be updated as well.
</para>
</listitem>
<listitem>
<para>
The <literal>consul</literal> package was upgraded past
version <literal>1.5</literal>, so its deprecated legacy UI is
no longer available.
</para>
</listitem>
<listitem>
<para>
The default resample-method for PulseAudio has been changed
from the upstream default <literal>speex-float-1</literal> to
<literal>speex-float-5</literal>. Be aware that low-powered
ARM-based and MIPS-based boards will struggle with this so
you'll need to set
<literal>hardware.pulseaudio.daemon.config.resample-method</literal>
back to <literal>speex-float-1</literal>.
</para>
</listitem>
<listitem>
<para>
The <literal>phabricator</literal> package and associated
<literal>httpd.extraSubservice</literal>, as well as the
<literal>phd</literal> service have been removed from nixpkgs
due to lack of maintainer.
</para>
</listitem>
<listitem>
<para>
The <literal>mercurial</literal>
<literal>httpd.extraSubservice</literal> has been removed from
nixpkgs due to lack of maintainer.
</para>
</listitem>
<listitem>
<para>
The <literal>trac</literal>
<literal>httpd.extraSubservice</literal> has been removed from
nixpkgs because it was unmaintained.
</para>
</listitem>
<listitem>
<para>
The <literal>foswiki</literal> package and associated
<literal>httpd.extraSubservice</literal> have been removed
from nixpkgs due to lack of maintainer.
</para>
</listitem>
<listitem>
<para>
The <literal>tomcat-connector</literal>
<literal>httpd.extraSubservice</literal> has been removed from
nixpkgs.
</para>
</listitem>
<listitem>
<para>
It's now possible to change configuration in
<link xlink:href="options.html#opt-services.nextcloud.enable">services.nextcloud</link>
after the initial deploy since all config parameters are
persisted in an additional config file generated by the
module. Previously core configuration like database parameters
were set using their imperative installer after creating
<literal>/var/lib/nextcloud</literal>.
</para>
</listitem>
<listitem>
<para>
There exists now <literal>lib.forEach</literal>, which is like
<literal>map</literal>, but with arguments flipped. When
mapping function body spans many lines (or has nested
<literal>map</literal>s), it is often hard to follow which
list is modified.
</para>
<para>
Previous solution to this problem was either to use
<literal>lib.flip map</literal> idiom or extract that
anonymous mapping function to a named one. Both can still be
used but <literal>lib.forEach</literal> is preferred over
<literal>lib.flip map</literal>.
</para>
<para>
The <literal>/etc/sysctl.d/nixos.conf</literal> file
containing all the options set via
<link xlink:href="options.html#opt-boot.kernel.sysctl">boot.kernel.sysctl</link>
was moved to <literal>/etc/sysctl.d/60-nixos.conf</literal>,
as sysctl.d5 recommends prefixing all filenames in
<literal>/etc/sysctl.d</literal> with a two-digit number and a
dash to simplify the ordering of the files.
</para>
</listitem>
<listitem>
<para>
We now install the sysctl snippets shipped with systemd.
</para>
<itemizedlist>
<listitem>
<para>
Loose reverse path filtering
</para>
</listitem>
<listitem>
<para>
Source route filtering
</para>
</listitem>
<listitem>
<para>
<literal>fq_codel</literal> as a packet scheduler (this
helps to fight bufferbloat)
</para>
</listitem>
</itemizedlist>
<para>
This also configures the kernel to pass core dumps to
<literal>systemd-coredump</literal>, and restricts the SysRq
key combinations to the sync command only. These sysctl
snippets can be found in
<literal>/etc/sysctl.d/50-*.conf</literal>, and overridden via
<link xlink:href="options.html#opt-boot.kernel.sysctl">boot.kernel.sysctl</link>
(which will place the parameters in
<literal>/etc/sysctl.d/60-nixos.conf</literal>).
</para>
</listitem>
<listitem>
<para>
Core dumps are now processed by
<literal>systemd-coredump</literal> by default.
<literal>systemd-coredump</literal> behaviour can still be
modified via <literal>systemd.coredump.extraConfig</literal>.
To stick to the old behaviour (having the kernel dump to a
file called <literal>core</literal> in the working directory),
without piping it through <literal>systemd-coredump</literal>,
set <literal>systemd.coredump.enable</literal> to
<literal>false</literal>.
</para>
</listitem>
<listitem>
<para>
<literal>systemd.packages</literal> option now also supports
generators and shutdown scripts. Old
<literal>systemd.generator-packages</literal> option has been
removed.
</para>
</listitem>
<listitem>
<para>
The <literal>rmilter</literal> package was removed with
associated module and options due deprecation by upstream
developer. Use <literal>rspamd</literal> in proxy mode
instead.
</para>
</listitem>
<listitem>
<para>
systemd cgroup accounting via the
<link xlink:href="options.html#opt-systemd.enableCgroupAccounting">systemd.enableCgroupAccounting</link>
option is now enabled by default. It now also enables the more
recent Block IO and IP accounting features.
</para>
</listitem>
<listitem>
<para>
We no longer enable custom font rendering settings with
<literal>fonts.fontconfig.penultimate.enable</literal> by
default. The defaults from fontconfig are sufficient.
</para>
</listitem>
<listitem>
<para>
The <literal>crashplan</literal> package and the
<literal>crashplan</literal> service have been removed from
nixpkgs due to crashplan shutting down the service, while the
<literal>crashplansb</literal> package and
<literal>crashplan-small-business</literal> service have been
removed from nixpkgs due to lack of maintainer.
</para>
<para>
The
<link xlink:href="options.html#opt-services.redis.enable">redis
module</link> was hardcoded to use the
<literal>redis</literal> user, <literal>/run/redis</literal>
as runtime directory and <literal>/var/lib/redis</literal> as
state directory. Note that the NixOS module for Redis now
disables kernel support for Transparent Huge Pages (THP),
because this features causes major performance problems for
Redis, e.g. (https://redis.io/topics/latency).
</para>
</listitem>
<listitem>
<para>
Using <literal>fonts.enableDefaultFonts</literal> adds a
default emoji font <literal>noto-fonts-emoji</literal>.
</para>
<itemizedlist>
<listitem>
<para>
<literal>services.xserver.enable</literal>
</para>
</listitem>
<listitem>
<para>
<literal>programs.sway.enable</literal>
</para>
</listitem>
<listitem>
<para>
<literal>programs.way-cooler.enable</literal>
</para>
</listitem>
<listitem>
<para>
<literal>services.xrdp.enable</literal>
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
The <literal>altcoins</literal> categorization of packages has
been removed. You now access these packages at the top level,
ie. <literal>nix-shell -p dogecoin</literal> instead of
<literal>nix-shell -p altcoins.dogecoin</literal>, etc.
</para>
</listitem>
<listitem>
<para>
Ceph has been upgraded to v14.2.1. See the
<link xlink:href="https://ceph.com/releases/v14-2-0-nautilus-released/">release
notes</link> for details. The mgr dashboard as well as osds
backed by loop-devices is no longer explicitly supported by
the package and module. Note: There's been some issues with
python-cherrypy, which is used by the dashboard and prometheus
mgr modules (and possibly others), hence
0000-dont-check-cherrypy-version.patch.
</para>
</listitem>
<listitem>
<para>
<literal>pkgs.weechat</literal> is now compiled against
<literal>pkgs.python3</literal>. Weechat also recommends
<link xlink:href="https://weechat.org/scripts/python3/">to use
Python3 in their docs.</link>
</para>
</listitem>
</itemizedlist>
</section>
</section>