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|
<section xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xml:id="sec-release-21.05">
<title>Release 21.05 (<quote>Okapi</quote>, 2021.05/31)</title>
<para>
Support is planned until the end of December 2021, handing over to
21.11.
</para>
<section xml:id="sec-release-21.05-highlights">
<title>Highlights</title>
<para>
In addition to numerous new and upgraded packages, this release
has the following highlights:
</para>
<itemizedlist>
<listitem>
<para>
Core version changes:
</para>
<itemizedlist>
<listitem>
<para>
gcc: 9.3.0 -> 10.3.0
</para>
</listitem>
<listitem>
<para>
glibc: 2.30 -> 2.32
</para>
</listitem>
<listitem>
<para>
default linux: 5.4 -> 5.10, all supported kernels
available
</para>
</listitem>
<listitem>
<para>
mesa: 20.1.7 -> 21.0.1
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
Desktop Environments:
</para>
<itemizedlist>
<listitem>
<para>
GNOME: 3.36 -> 40, see its
<link xlink:href="https://help.gnome.org/misc/release-notes/40.0/">release
notes</link>
</para>
</listitem>
<listitem>
<para>
Plasma5: 5.18.5 -> 5.21.3
</para>
</listitem>
<listitem>
<para>
kdeApplications: 20.08.1 -> 20.12.3
</para>
</listitem>
<listitem>
<para>
cinnamon: 4.6 -> 4.8.1
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
Programming Languages and Frameworks:
</para>
<itemizedlist spacing="compact">
<listitem>
<para>
Python optimizations were disabled again. Builds with
optimizations enabled are not reproducible. Optimizations
can now be enabled with an option.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
The linux_latest kernel was updated to the 5.13 series. It
currently is not officially supported for use with the zfs
filesystem. If you use zfs, you should use a different kernel
version (either the LTS kernel, or track a specific one).
</para>
</listitem>
</itemizedlist>
</section>
<section xml:id="sec-release-21.05-new-services">
<title>New Services</title>
<para>
The following new services were added since the last release:
</para>
<itemizedlist>
<listitem>
<para>
<link xlink:href="https://www.gnuradio.org/">GNURadio</link>
3.8 and 3.9 were
<link xlink:href="https://github.com/NixOS/nixpkgs/issues/82263">finally</link>
packaged, along with a rewrite to the Nix expressions,
allowing users to override the features upstream supports
selecting to compile or not to. Additionally, the attribute
<literal>gnuradio</literal> (3.9),
<literal>gnuradio3_8</literal> and
<literal>gnuradio3_7</literal> now point to an externally
wrapped by default derivations, that allow you to also add
`extraPythonPackages` to the Python interpreter used by
GNURadio. Missing environmental variables needed for
operational GUI were also added
(<link xlink:href="https://github.com/NixOS/nixpkgs/issues/75478">#75478</link>).
</para>
</listitem>
<listitem>
<para>
<link xlink:href="https://www.keycloak.org/">Keycloak</link>,
an open source identity and access management server with
support for
<link xlink:href="https://openid.net/connect/">OpenID
Connect</link>, <link xlink:href="https://oauth.net/2/">OAUTH
2.0</link> and
<link xlink:href="https://en.wikipedia.org/wiki/SAML_2.0">SAML
2.0</link>.
</para>
<para>
See the <link linkend="module-services-keycloak">Keycloak
section of the NixOS manual</link> for more information.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-services.samba-wsdd.enable">services.samba-wsdd.enable</link>
Web Services Dynamic Discovery host daemon
</para>
</listitem>
<listitem>
<para>
<link xlink:href="https://www.discourse.org/">Discourse</link>,
a modern and open source discussion platform.
</para>
<para>
See the <link linkend="module-services-discourse">Discourse
section of the NixOS manual</link> for more information.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-services.nebula.networks">services.nebula.networks</link>
<link xlink:href="https://github.com/slackhq/nebula">Nebula
VPN</link>
</para>
</listitem>
</itemizedlist>
</section>
<section xml:id="sec-release-21.05-incompatibilities">
<title>Backward Incompatibilities</title>
<para>
When upgrading from a previous release, please be aware of the
following incompatible changes:
</para>
<itemizedlist>
<listitem>
<para>
GNOME desktop environment was upgraded to 40, see the release
notes for
<link xlink:href="https://help.gnome.org/misc/release-notes/40.0/">40.0</link>
and
<link xlink:href="https://help.gnome.org/misc/release-notes/3.38/">3.38</link>.
The <literal>gnome3</literal> attribute set has been renamed
to <literal>gnome</literal> and so have been the NixOS
options.
</para>
</listitem>
<listitem>
<para>
If you are using <literal>services.udev.extraRules</literal>
to assign custom names to network interfaces, this may stop
working due to a change in the initialisation of dhcpcd and
systemd networkd. To avoid this, either move them to
<literal>services.udev.initrdRules</literal> or see the new
<link linkend="sec-custom-ifnames">Assigning custom
names</link> section of the NixOS manual for an example using
networkd links.
</para>
</listitem>
<listitem>
<para>
The <literal>security.hideProcessInformation</literal> module
has been removed. It was broken since the switch to
cgroups-v2.
</para>
</listitem>
<listitem>
<para>
The <literal>linuxPackages.ati_drivers_x11</literal> kernel
modules have been removed. The drivers only supported kernels
prior to 4.2, and thus have become obsolete.
</para>
</listitem>
<listitem>
<para>
The <literal>systemConfig</literal> kernel parameter is no
longer added to boot loader entries. It has been unused since
September 2010, but if do have a system generation from that
era, you will now be unable to boot into them.
</para>
</listitem>
<listitem>
<para>
<literal>systemd-journal2gelf</literal> no longer parses json
and expects the receiving system to handle it. How to achieve
this with Graylog is described in this
<link xlink:href="https://github.com/parse-nl/SystemdJournal2Gelf/issues/10">GitHub
issue</link>.
</para>
</listitem>
<listitem>
<para>
If the <literal>services.dbus</literal> module is enabled,
then the user D-Bus session is now always socket activated.
The associated options
<literal>services.dbus.socketActivated</literal> and
<literal>services.xserver.startDbusSession</literal> have
therefore been removed and you will receive a warning if they
are present in your configuration. This change makes the user
D-Bus session available also for non-graphical logins.
</para>
</listitem>
<listitem>
<para>
The <literal>networking.wireless.iwd</literal> module now
installs the upstream-provided 80-iwd.link file, which sets
the NamePolicy= for all wlan devices to "keep
kernel", to avoid race conditions between iwd and
networkd. If you don't want this, you can set
<literal>systemd.network.links."80-iwd" = lib.mkForce {}</literal>.
</para>
</listitem>
<listitem>
<para>
<literal>rubyMinimal</literal> was removed due to being unused
and unusable. The default ruby interpreter includes JIT
support, which makes it reference it's compiler. Since JIT
support is probably needed by some Gems, it was decided to
enable this feature with all cc references by default, and
allow to build a Ruby derivation without references to cc, by
setting <literal>jitSupport = false;</literal> in an overlay.
See
<link xlink:href="https://github.com/NixOS/nixpkgs/pull/90151">#90151</link>
for more info.
</para>
</listitem>
<listitem>
<para>
Setting
<literal>services.openssh.authorizedKeysFiles</literal> now
also affects which keys
<literal>security.pam.enableSSHAgentAuth</literal> will use.
WARNING: If you are using these options in combination do make
sure that any key paths you use are present in
<literal>services.openssh.authorizedKeysFiles</literal>!
</para>
</listitem>
<listitem>
<para>
The option <literal>fonts.enableFontDir</literal> has been
renamed to
<link xlink:href="options.html#opt-fonts.fontDir.enable">fonts.fontDir.enable</link>.
The path of font directory has also been changed to
<literal>/run/current-system/sw/share/X11/fonts</literal>, for
consistency with other X11 resources.
</para>
</listitem>
<listitem>
<para>
A number of options have been renamed in the kicad interface.
<literal>oceSupport</literal> has been renamed to
<literal>withOCE</literal>, <literal>withOCCT</literal> has
been renamed to <literal>withOCC</literal>,
<literal>ngspiceSupport</literal> has been renamed to
<literal>withNgspice</literal>, and
<literal>scriptingSupport</literal> has been renamed to
<literal>withScripting</literal>. Additionally,
<literal>kicad/base.nix</literal> no longer provides default
argument values since these are provided by
<literal>kicad/default.nix</literal>.
</para>
</listitem>
<listitem>
<para>
The socket for the <literal>pdns-recursor</literal> module was
moved from <literal>/var/lib/pdns-recursor</literal> to
<literal>/run/pdns-recursor</literal> to match upstream.
</para>
</listitem>
<listitem>
<para>
Paperwork was updated to version 2. The on-disk format
slightly changed, and it is not possible to downgrade from
Paperwork 2 back to Paperwork 1.3. Back your documents up
before upgrading. See
<link xlink:href="https://forum.openpaper.work/t/paperwork-2-0/112/5">this
thread</link> for more details.
</para>
</listitem>
<listitem>
<para>
PowerDNS has been updated from <literal>4.2.x</literal> to
<literal>4.3.x</literal>. Please be sure to review the
<link xlink:href="https://doc.powerdns.com/authoritative/upgrading.html#x-to-4-3-0">Upgrade
Notes</link> provided by upstream before upgrading. Worth
specifically noting is that the service now runs entirely as a
dedicated <literal>pdns</literal> user, instead of starting as
<literal>root</literal> and dropping privileges, as well as
the default <literal>socket-dir</literal> location changing
from <literal>/var/lib/powerdns</literal> to
<literal>/run/pdns</literal>.
</para>
</listitem>
<listitem>
<para>
The <literal>mediatomb</literal> service is now using by
default the new and maintained fork <literal>gerbera</literal>
package instead of the unmaintained
<literal>mediatomb</literal> package. If you want to keep the
old behavior, you must declare it with:
</para>
<programlisting language="bash">
{
services.mediatomb.package = pkgs.mediatomb;
}
</programlisting>
<para>
One new option <literal>openFirewall</literal> has been
introduced which defaults to false. If you relied on the
service declaration to add the firewall rules itself before,
you should now declare it with:
</para>
<programlisting language="bash">
{
services.mediatomb.openFirewall = true;
}
</programlisting>
</listitem>
<listitem>
<para>
xfsprogs was update from 4.19 to 5.11. It now enables reflink
support by default on filesystem creation. Support for
reflinks was added with an experimental status to kernel 4.9
and deemed stable in kernel 4.16. If you want to be able to
mount XFS filesystems created with this release of xfsprogs on
kernel releases older than those, you need to format them with
<literal>mkfs.xfs -m reflink=0</literal>.
</para>
</listitem>
<listitem>
<para>
The uWSGI server is now built with POSIX capabilities. As a
consequence, root is no longer required in emperor mode and
the service defaults to running as the unprivileged
<literal>uwsgi</literal> user. Any additional capability can
be added via the new option
<link xlink:href="options.html#opt-services.uwsgi.capabilities">services.uwsgi.capabilities</link>.
The previous behaviour can be restored by setting:
</para>
<programlisting language="bash">
{
services.uwsgi.user = "root";
services.uwsgi.group = "root";
services.uwsgi.instance =
{
uid = "uwsgi";
gid = "uwsgi";
};
}
</programlisting>
<para>
Another incompatibility from the previous release is that
vassals running under a different user or group need to use
<literal>immediate-{uid,gid}</literal> instead of the usual
<literal>uid,gid</literal> options.
</para>
</listitem>
<listitem>
<para>
btc1 has been abandoned upstream, and removed.
</para>
</listitem>
<listitem>
<para>
cpp_ethereum (aleth) has been abandoned upstream, and removed.
</para>
</listitem>
<listitem>
<para>
riak-cs package removed along with
<literal>services.riak-cs</literal> module.
</para>
</listitem>
<listitem>
<para>
stanchion package removed along with
<literal>services.stanchion</literal> module.
</para>
</listitem>
<listitem>
<para>
mutt has been updated to a new major version (2.x), which
comes with some backward incompatible changes that are
described in the
<link xlink:href="http://www.mutt.org/relnotes/2.0/">release
notes for Mutt 2.0</link>.
</para>
</listitem>
<listitem>
<para>
<literal>vim</literal> and <literal>neovim</literal> switched
to Python 3, dropping all Python 2 support.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-networking.wireguard.interfaces">networking.wireguard.interfaces.<name>.generatePrivateKeyFile</link>,
which is off by default, had a <literal>chmod</literal> race
condition fixed. As an aside, the parent directory's
permissions were widened, and the key files were made
owner-writable. This only affects newly created keys. However,
if the exact permissions are important for your setup, read
<link xlink:href="https://github.com/NixOS/nixpkgs/pull/121294">#121294</link>.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-boot.zfs.forceImportAll">boot.zfs.forceImportAll</link>
previously did nothing, but has been fixed. However its
default has been changed to <literal>false</literal> to
preserve the existing default behaviour. If you have this
explicitly set to <literal>true</literal>, please note that
your non-root pools will now be forcibly imported.
</para>
</listitem>
<listitem>
<para>
openafs now points to openafs_1_8, which is the new stable
release. OpenAFS 1.6 was removed.
</para>
</listitem>
<listitem>
<para>
The WireGuard module gained a new option
<literal>networking.wireguard.interfaces.<name>.peers.*.dynamicEndpointRefreshSeconds</literal>
that implements refreshing the IP of DNS-based endpoints
periodically (which WireGuard itself
<link xlink:href="https://lists.zx2c4.com/pipermail/wireguard/2017-November/002028.html">cannot
do</link>).
</para>
</listitem>
<listitem>
<para>
MariaDB has been updated to 10.5. Before you upgrade, it would
be best to take a backup of your database and read
<link xlink:href="https://mariadb.com/kb/en/upgrading-from-mariadb-104-to-mariadb-105/#incompatible-changes-between-104-and-105">
Incompatible Changes Between 10.4 and 10.5</link>. After the
upgrade you will need to run <literal>mysql_upgrade</literal>.
</para>
</listitem>
<listitem>
<para>
The TokuDB storage engine dropped in mariadb 10.5 and removed
in mariadb 10.6. It is recommended to switch to RocksDB. See
also
<link xlink:href="https://mariadb.com/kb/en/tokudb/">TokuDB</link>
and
<link xlink:href="https://jira.mariadb.org/browse/MDEV-19780">MDEV-19780:
Remove the TokuDB storage engine</link>.
</para>
</listitem>
<listitem>
<para>
The <literal>openldap</literal> module now has support for
OLC-style configuration, users of the
<literal>configDir</literal> option may wish to migrate. If
you continue to use <literal>configDir</literal>, ensure that
<literal>olcPidFile</literal> is set to
<literal>/run/slapd/slapd.pid</literal>.
</para>
<para>
As a result, <literal>extraConfig</literal> and
<literal>extraDatabaseConfig</literal> are removed. To help
with migration, you can convert your
<literal>slapd.conf</literal> file to OLC configuration with
the following script (find the location of this configuration
file by running <literal>systemctl status openldap</literal>,
it is the <literal>-f</literal> option.
</para>
<programlisting>
$ TMPDIR=$(mktemp -d)
$ slaptest -f /path/to/slapd.conf -F $TMPDIR
$ slapcat -F $TMPDIR -n0 -H 'ldap:///???(!(objectClass=olcSchemaConfig))'
</programlisting>
<para>
This will dump your current configuration in LDIF format,
which should be straightforward to convert into Nix settings.
This does not show your schema configuration, as this is
unnecessarily verbose for users of the default schemas and
<literal>slaptest</literal> is buggy with schemas directly in
the config file.
</para>
</listitem>
<listitem>
<para>
Amazon EC2 and OpenStack Compute (nova) images now re-fetch
instance meta data and user data from the instance metadata
service (IMDS) on each boot. For example: stopping an EC2
instance, changing its user data, and restarting the instance
will now cause it to fetch and apply the new user data.
</para>
<warning>
<para>
Specifically, <literal>/etc/ec2-metadata</literal> is
re-populated on each boot. Some NixOS scripts that read from
this directory are guarded to only run if the files they
want to manipulate do not already exist, and so will not
re-apply their changes if the IMDS response changes.
Examples: <literal>root</literal>'s SSH key is only added if
<literal>/root/.ssh/authorized_keys</literal> does not
exist, and SSH host keys are only set from user data if they
do not exist in <literal>/etc/ssh</literal>.
</para>
</warning>
</listitem>
<listitem>
<para>
The <literal>rspamd</literal> services is now sandboxed. It is
run as a dynamic user instead of root, so secrets and other
files may have to be moved or their permissions may have to be
fixed. The sockets are now located in
<literal>/run/rspamd</literal> instead of
<literal>/run</literal>.
</para>
</listitem>
<listitem>
<para>
Enabling the Tor client no longer silently also enables and
configures Privoxy, and the
<literal>services.tor.client.privoxy.enable</literal> option
has been removed. To enable Privoxy, and to configure it to
use Tor's faster port, use the following configuration:
</para>
<programlisting language="bash">
{
opt-services.privoxy.enable = true;
opt-services.privoxy.enableTor = true;
}
</programlisting>
</listitem>
<listitem>
<para>
The <literal>services.tor</literal> module has a new
exhaustively typed
<link xlink:href="options.html#opt-services.tor.settings">services.tor.settings</link>
option following RFC 0042; backward compatibility with old
options has been preserved when aliasing was possible. The
corresponding systemd service has been hardened, but there is
a chance that the service still requires more permissions, so
please report any related trouble on the bugtracker. Onion
services v3 are now supported in
<link xlink:href="options.html#opt-services.tor.relay.onionServices">services.tor.relay.onionServices</link>.
A new
<link xlink:href="options.html#opt-services.tor.openFirewall">services.tor.openFirewall</link>
option as been introduced for allowing connections on all the
TCP ports configured.
</para>
</listitem>
<listitem>
<para>
The options
<literal>services.slurm.dbdserver.storagePass</literal> and
<literal>services.slurm.dbdserver.configFile</literal> have
been removed. Use
<literal>services.slurm.dbdserver.storagePassFile</literal>
instead to provide the database password. Extra config options
can be given via the option
<literal>services.slurm.dbdserver.extraConfig</literal>. The
actual configuration file is created on the fly on startup of
the service. This avoids that the password gets exposed in the
nix store.
</para>
</listitem>
<listitem>
<para>
The <literal>wafHook</literal> hook does not wrap Python
anymore. Packages depending on <literal>wafHook</literal> need
to include any Python into their
<literal>nativeBuildInputs</literal>.
</para>
</listitem>
<listitem>
<para>
Starting with version 1.7.0, the project formerly named
<literal>CodiMD</literal> is now named
<literal>HedgeDoc</literal>. New installations will no longer
use the old name for users, state directories and such, this
needs to be considered when moving state to a more recent
NixOS installation. Based on
<link xlink:href="options.html#opt-system.stateVersion">system.stateVersion</link>,
existing installations will continue to work.
</para>
</listitem>
<listitem>
<para>
The fish-foreign-env package has been replaced with
fishPlugins.foreign-env, in which the fish functions have been
relocated to the <literal>vendor_functions.d</literal>
directory to be loaded automatically.
</para>
</listitem>
<listitem>
<para>
The prometheus json exporter is now managed by the prometheus
community. Together with additional features some backwards
incompatibilities were introduced. Most importantly the
exporter no longer accepts a fixed command-line parameter to
specify the URL of the endpoint serving JSON. It now expects
this URL to be passed as an URL parameter, when scraping the
exporter's <literal>/probe</literal> endpoint. In the
prometheus scrape configuration the scrape target might look
like this:
</para>
<programlisting>
http://some.json-exporter.host:7979/probe?target=https://example.com/some/json/endpoint
</programlisting>
<para>
Existing configuration for the exporter needs to be updated,
but can partially be re-used. Documentation is available in
the upstream repository and a small example for NixOS is
available in the corresponding NixOS test.
</para>
<para>
These changes also affect
<link xlink:href="options.html#opt-services.prometheus.exporters.rspamd.enable">services.prometheus.exporters.rspamd.enable</link>,
which is just a preconfigured instance of the json exporter.
</para>
<para>
For more information, take a look at the
<link xlink:href="https://github.com/prometheus-community/json_exporter">
official documentation</link> of the json_exporter.
</para>
</listitem>
<listitem>
<para>
Androidenv was updated, removing the
<literal>includeDocs</literal> and
<literal>lldbVersions</literal> arguments. Docs only covered a
single version of the Android SDK, LLDB is now bundled with
the NDK, and both are no longer available to download from the
Android package repositories. Additionally, since the package
lists have been updated, some older versions of Android
packages may not be bundled. If you depend on older versions
of Android packages, we recommend overriding the repo.
</para>
<para>
Android packages are now loaded from a repo.json file created
by parsing Android repo XML files. The arguments
<literal>repoJson</literal> and <literal>repoXmls</literal>
have been added to allow overriding the built-in androidenv
repo.json with your own. Additionally, license files are now
written to allow compatibility with Gradle-based tools, and
the <literal>extraLicenses</literal> argument has been added
to accept more SDK licenses if your project requires it. See
the androidenv documentation for more details.
</para>
</listitem>
<listitem>
<para>
The attribute <literal>mpi</literal> is now consistently used
to provide a default, system-wide MPI implementation. The
default implementation is openmpi, which has been used before
by all derivations affects by this change. Note that all
packages that have used <literal>mpi ? null</literal> in the
input for optional MPI builds, have been changed to the
boolean input paramater <literal>useMpi</literal> to enable
building with MPI. Building all packages with
<literal>mpich</literal> instead of the default
<literal>openmpi</literal> can now be achived like this:
</para>
<programlisting language="bash">
self: super:
{
mpi = super.mpich;
}
</programlisting>
</listitem>
<listitem>
<para>
The Searx module has been updated with the ability to
configure the service declaratively and uWSGI integration. The
option <literal>services.searx.configFile</literal> has been
renamed to
<link xlink:href="options.html#opt-services.searx.settingsFile">services.searx.settingsFile</link>
for consistency with the new
<link xlink:href="options.html#opt-services.searx.settings">services.searx.settings</link>.
In addition, the <literal>searx</literal> uid and gid
reservations have been removed since they were not necessary:
the service is now running with a dynamically allocated uid.
</para>
</listitem>
<listitem>
<para>
The libinput module has been updated with the ability to
configure mouse and touchpad settings separately. The options
in <literal>services.xserver.libinput</literal> have been
renamed to
<literal>services.xserver.libinput.touchpad</literal>, while
there is a new
<literal>services.xserver.libinput.mouse</literal> for mouse
related configuration.
</para>
<para>
Since touchpad options no longer apply to all devices, you may
want to replicate your touchpad configuration in mouse
section.
</para>
</listitem>
<listitem>
<para>
ALSA OSS emulation
(<literal>sound.enableOSSEmulation</literal>) is now disabled
by default.
</para>
</listitem>
<listitem>
<para>
Thinkfan as been updated to <literal>1.2.x</literal>, which
comes with a new YAML based configuration format. For this
reason, several NixOS options of the thinkfan module have been
changed to non-backward compatible types. In addition, a new
<link xlink:href="options.html#opt-services.thinkfan.settings">services.thinkfan.settings</link>
option has been added.
</para>
<para>
Please read the
<link xlink:href="https://github.com/vmatare/thinkfan#readme">
thinkfan documentation</link> before updating.
</para>
</listitem>
<listitem>
<para>
Adobe Flash Player support has been dropped from the tree. In
particular, the following packages no longer support it:
</para>
<itemizedlist>
<listitem>
<para>
chromium
</para>
</listitem>
<listitem>
<para>
firefox
</para>
</listitem>
<listitem>
<para>
qt48
</para>
</listitem>
<listitem>
<para>
qt5.qtwebkit
</para>
</listitem>
</itemizedlist>
<para>
Additionally, packages flashplayer and hal-flash were removed
along with the <literal>services.flashpolicyd</literal>
module.
</para>
</listitem>
<listitem>
<para>
The <literal>security.rngd</literal> module has been removed.
It was disabled by default in 20.09 as it was functionally
redundant with krngd in the linux kernel. It is not necessary
for any device that the kernel recognises as an hardware RNG,
as it will automatically run the krngd task to periodically
collect random data from the device and mix it into the
kernel's RNG.
</para>
<para>
The default SMTP port for GitLab has been changed to
<literal>25</literal> from its previous default of
<literal>465</literal>. If you depended on this default, you
should now set the
<link xlink:href="options.html#opt-services.gitlab.smtp.port">services.gitlab.smtp.port</link>
option.
</para>
</listitem>
<listitem>
<para>
The default version of ImageMagick has been updated from 6 to
7. You can use imagemagick6, imagemagick6_light, and
imagemagick6Big if you need the older version.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-services.xserver.videoDrivers">services.xserver.videoDrivers</link>
no longer uses the deprecated <literal>cirrus</literal> and
<literal>vesa</literal> device dependent X drivers by default.
It also enables both <literal>amdgpu</literal> and
<literal>nouveau</literal> drivers by default now.
</para>
</listitem>
<listitem>
<para>
The <literal>kindlegen</literal> package is gone, because it
is no longer supported or hosted by Amazon. Sadly, its
replacement, Kindle Previewer, has no Linux support. However,
there are other ways to generate MOBI files. See
<link xlink:href="https://github.com/NixOS/nixpkgs/issues/96439">the
discussion</link> for more info.
</para>
</listitem>
<listitem>
<para>
The apacheKafka packages are now built with version-matched
JREs. Versions 2.6 and above, the ones that recommend it, use
jdk11, while versions below remain on jdk8. The NixOS service
has been adjusted to start the service using the same version
as the package, adjustable with the new
<link xlink:href="options.html#opt-services.apache-kafka.jre">services.apache-kafka.jre</link>
option. Furthermore, the default list of
<link xlink:href="options.html#opt-services.apache-kafka.jvmOptions">services.apache-kafka.jvmOptions</link>
have been removed. You should set your own according to the
<link xlink:href="https://kafka.apache.org/documentation/#java">upstream
documentation</link> for your Kafka version.
</para>
</listitem>
<listitem>
<para>
The kodi package has been modified to allow concise addon
management. Consider the following configuration from previous
releases of NixOS to install kodi, including the
kodiPackages.inputstream-adaptive and kodiPackages.vfs-sftp
addons:
</para>
<programlisting language="bash">
{
environment.systemPackages = [
pkgs.kodi
];
nixpkgs.config.kodi = {
enableInputStreamAdaptive = true;
enableVFSSFTP = true;
};
}
</programlisting>
<para>
All Kodi <literal>config</literal> flags have been removed,
and as a result the above configuration should now be written
as:
</para>
<programlisting language="bash">
{
environment.systemPackages = [
(pkgs.kodi.withPackages (p: with p; [
inputstream-adaptive
vfs-sftp
]))
];
}
</programlisting>
</listitem>
<listitem>
<para>
<literal>environment.defaultPackages</literal> now includes
the nano package. If pkgs.nano is not added to the list, make
sure another editor is installed and the
<literal>EDITOR</literal> environment variable is set to it.
Environment variables can be set using
<literal>environment.variables</literal>.
</para>
</listitem>
<listitem>
<para>
<literal>services.minio.dataDir</literal> changed type to a
list of paths, required for specifiyng multiple data
directories for using with erasure coding. Currently, the
service doesn't enforce nor checks the correct number of paths
to correspond to minio requirements.
</para>
</listitem>
<listitem>
<para>
All CUDA toolkit versions prior to CUDA 10 have been removed.
</para>
</listitem>
<listitem>
<para>
The kbdKeymaps package was removed since dvp and neo are now
included in kbd. If you want to use the Programmer Dvorak
Keyboard Layout, you have to use
<literal>dvorak-programmer</literal> in
<literal>console.keyMap</literal> now instead of
<literal>dvp</literal>. In
<literal>services.xserver.xkbVariant</literal> it's still
<literal>dvp</literal>.
</para>
</listitem>
<listitem>
<para>
The babeld service is now being run as an unprivileged user.
To achieve that the module configures
<literal>skip-kernel-setup true</literal> and takes care of
setting forwarding and rp_filter sysctls by itself as well as
for each interface in
<literal>services.babeld.interfaces</literal>.
</para>
</listitem>
<listitem>
<para>
The <literal>services.zigbee2mqtt.config</literal> option has
been renamed to
<literal>services.zigbee2mqtt.settings</literal> and now
follows
<link xlink:href="https://github.com/NixOS/rfcs/blob/master/rfcs/0042-config-option.md">RFC
0042</link>.
</para>
</listitem>
</itemizedlist>
<para>
The yadm dotfile manager has been updated from 2.x to 3.x, which
has new (XDG) default locations for some data/state files. Most
yadm commands will fail and print a legacy path warning (which
describes how to upgrade/migrate your repository). If you have
scripts, daemons, scheduled jobs, shell profiles, etc. that invoke
yadm, expect them to fail or misbehave until you perform this
migration and prepare accordingly.
</para>
<itemizedlist>
<listitem>
<para>
Instead of determining
<literal>services.radicale.package</literal> automatically
based on <literal>system.stateVersion</literal>, the latest
version is always used because old versions are not officially
supported.
</para>
<para>
Furthermore, Radicale's systemd unit was hardened which might
break some deployments. In particular, a non-default
<literal>filesystem_folder</literal> has to be added to
<literal>systemd.services.radicale.serviceConfig.ReadWritePaths</literal>
if the deprecated <literal>services.radicale.config</literal>
is used.
</para>
</listitem>
<listitem>
<para>
In the <literal>security.acme</literal> module, use of
<literal>--reuse-key</literal> parameter for Lego has been
removed. It was introduced for HKPK, but this security feature
is now deprecated. It is a better security practice to rotate
key pairs instead of always keeping the same. If you need to
keep this parameter, you can add it back using
<literal>extraLegoRenewFlags</literal> as an option for the
appropriate certificate.
</para>
</listitem>
</itemizedlist>
</section>
<section xml:id="sec-release-21.05-notable-changes">
<title>Other Notable Changes</title>
<itemizedlist>
<listitem>
<para>
<literal>stdenv.lib</literal> has been deprecated and will
break eval in 21.11. Please use <literal>pkgs.lib</literal>
instead. See
<link xlink:href="https://github.com/NixOS/nixpkgs/issues/108938">#108938</link>
for details.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="https://www.gnuradio.org/">GNURadio</link>
has a <literal>pkgs</literal> attribute set, and there's a
<literal>gnuradio.callPackage</literal> function that extends
<literal>pkgs</literal> with a
<literal>mkDerivation</literal>, and a
<literal>mkDerivationWith</literal>, like Qt5. Now all
<literal>gnuradio.pkgs</literal> are defined with
<literal>gnuradio.callPackage</literal> and some packages that
depend on gnuradio are defined with this as well.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="https://www.privoxy.org/">Privoxy</link> has
been updated to version 3.0.32 (See
<link xlink:href="https://lists.privoxy.org/pipermail/privoxy-announce/2021-February/000007.html">announcement</link>).
Compared to the previous release, Privoxy has gained support
for HTTPS inspection (still experimental), Brotli
decompression, several new filters and lots of bug fixes,
including security ones. In addition, the package is now built
with compression and external filters support, which were
previously disabled.
</para>
<para>
Regarding the NixOS module, new options for HTTPS inspection
have been added and
<literal>services.privoxy.extraConfig</literal> has been
replaced by the new
<link xlink:href="options.html#opt-services.privoxy.settings">services.privoxy.settings</link>
(See
<link xlink:href="https://github.com/NixOS/rfcs/blob/master/rfcs/0042-config-option.md">RFC
0042</link> for the motivation).
</para>
</listitem>
<listitem>
<para>
<link xlink:href="https://kodi.tv/">Kodi</link> has been
updated to version 19.1 "Matrix". See the
<link xlink:href="https://kodi.tv/article/kodi-19-0-matrix-release">announcement</link>
for further details.
</para>
</listitem>
<listitem>
<para>
The <literal>services.packagekit.backend</literal> option has
been removed as it only supported a single setting which would
always be the default. Instead new
<link xlink:href="https://github.com/NixOS/rfcs/blob/master/rfcs/0042-config-option.md">RFC
0042</link> compliant
<link xlink:href="options.html#opt-services.packagekit.settings">services.packagekit.settings</link>
and
<link xlink:href="options.html#opt-services.packagekit.vendorSettings">services.packagekit.vendorSettings</link>
options have been introduced.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="https://nginx.org">Nginx</link> has been
updated to stable version 1.20.0. Now nginx uses the zlib-ng
library by default.
</para>
</listitem>
<listitem>
<para>
KDE Gear (formerly KDE Applications) is upgraded to 21.04, see
its
<link xlink:href="https://kde.org/announcements/gear/21.04/">release
notes</link> for details.
</para>
<para>
The <literal>kdeApplications</literal> package set is now
<literal>kdeGear</literal>, in keeping with the new name. The
old name remains for compatibility, but it is deprecated.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="https://libreswan.org/">Libreswan</link> has
been updated to version 4.4. The package now includes example
configurations and manual pages by default. The NixOS module
has been changed to use the upstream systemd units and write
the configuration in the <literal>/etc/ipsec.d/ </literal>
directory. In addition, two new options have been added to
specify connection policies
(<link xlink:href="options.html#opt-services.libreswan.policies">services.libreswan.policies</link>)
and disable send/receive redirects
(<link xlink:href="options.html#opt-services.libreswan.disableRedirects">services.libreswan.disableRedirects</link>).
</para>
</listitem>
<listitem>
<para>
The Mailman NixOS module (<literal>services.mailman</literal>)
has a new option
<link xlink:href="options.html#opt-services.mailman.enablePostfix">services.mailman.enablePostfix</link>,
defaulting to true, that controls integration with Postfix.
</para>
<para>
If this option is disabled, default MTA config becomes not set
and you should set the options in
<literal>services.mailman.settings.mta</literal> according to
the desired configuration as described in
<link xlink:href="https://mailman.readthedocs.io/en/latest/src/mailman/docs/mta.html">Mailman
documentation</link>.
</para>
</listitem>
<listitem>
<para>
The default-version of <literal>nextcloud</literal> is
nextcloud21. Please note that it's <emphasis>not</emphasis>
possible to upgrade <literal>nextcloud</literal> across
multiple major versions! This means that it's e.g. not
possible to upgrade from nextcloud18 to nextcloud20 in a
single deploy and most <literal>20.09</literal> users will
have to upgrade to nextcloud20 first.
</para>
<para>
The package can be manually upgraded by setting
<link xlink:href="options.html#opt-services.nextcloud.package">services.nextcloud.package</link>
to nextcloud21.
</para>
</listitem>
<listitem>
<para>
The setting
<link xlink:href="options.html#opt-services.redis.bind">services.redis.bind</link>
defaults to <literal>127.0.0.1</literal> now, making Redis
listen on the loopback interface only, and not all public
network interfaces.
</para>
</listitem>
<listitem>
<para>
NixOS now emits a deprecation warning if systemd's
<literal>StartLimitInterval</literal> setting is used in a
<literal>serviceConfig</literal> section instead of in a
<literal>unitConfig</literal>; that setting is deprecated and
now undocumented for the service section by systemd upstream,
but still effective and somewhat buggy there, which can be
confusing. See
<link xlink:href="https://github.com/NixOS/nixpkgs/issues/45785">#45785</link>
for details.
</para>
<para>
All services should use
<link xlink:href="options.html#opt-systemd.services._name_.startLimitIntervalSec">systemd.services.<emphasis>name</emphasis>.startLimitIntervalSec</link>
or <literal>StartLimitIntervalSec</literal> in
<link xlink:href="options.html#opt-systemd.services._name_.unitConfig">systemd.services.<emphasis>name</emphasis>.unitConfig</link>
instead.
</para>
</listitem>
<listitem>
<para>
The <literal>mediatomb</literal> service declares new options.
It also adapts existing options so the configuration
generation is now lazy. The existing option
<literal>customCfg</literal> (defaults to false), when
enabled, stops the service configuration generation
completely. It then expects the users to provide their own
correct configuration at the right location (whereas the
configuration was generated and not used at all before). The
new option <literal>transcodingOption</literal> (defaults to
no) allows a generated configuration. It makes the mediatomb
service pulls the necessary runtime dependencies in the nix
store (whereas it was generated with hardcoded values before).
The new option <literal>mediaDirectories</literal> allows the
users to declare autoscan media directories from their nixos
configuration:
</para>
<programlisting language="bash">
{
services.mediatomb.mediaDirectories = [
{ path = "/var/lib/mediatomb/pictures"; recursive = false; hidden-files = false; }
{ path = "/var/lib/mediatomb/audio"; recursive = true; hidden-files = false; }
];
}
</programlisting>
</listitem>
<listitem>
<para>
The Unbound DNS resolver service
(<literal>services.unbound</literal>) has been refactored to
allow reloading, control sockets and to fix startup ordering
issues.
</para>
<para>
It is now possible to enable a local UNIX control socket for
unbound by setting the
<link xlink:href="options.html#opt-services.unbound.localControlSocketPath">services.unbound.localControlSocketPath</link>
option.
</para>
<para>
Previously we just applied a very minimal set of restrictions
and trusted unbound to properly drop root privs and
capabilities.
</para>
<para>
As of this we are (for the most part) just using the upstream
example unit file for unbound. The main difference is that we
start unbound as <literal>unbound</literal> user with the
required capabilities instead of letting unbound do the chroot
& uid/gid changes.
</para>
<para>
The upstream unit configuration this is based on is a lot
stricter with all kinds of permissions then our previous
variant. It also came with the default of having the
<literal>Type</literal> set to <literal>notify</literal>,
therefore we are now also using the
<literal>unbound-with-systemd</literal> package here. Unbound
will start up, read the configuration files and start
listening on the configured ports before systemd will declare
the unit <literal>active (running)</literal>. This will likely
help with startup order and the occasional race condition
during system activation where the DNS service is started but
not yet ready to answer queries. Services depending on
<literal>nss-lookup.target</literal> or
<literal>unbound.service</literal> are now be able to use
unbound when those targets have been reached.
</para>
<para>
Additionally to the much stricter runtime environment the
<literal>/dev/urandom</literal> mount lines we previously had
in the code (that randomly failed during the stop-phase) have
been removed as systemd will take care of those for us.
</para>
<para>
The <literal>preStart</literal> script is now only required if
we enabled the trust anchor updates (which are still enabled
by default).
</para>
<para>
Another benefit of the refactoring is that we can now issue
reloads via either <literal>pkill -HUP unbound</literal> and
<literal>systemctl reload unbound</literal> to reload the
running configuration without taking the daemon offline. A
prerequisite of this was that unbound configuration is
available on a well known path on the file system. We are
using the path <literal>/etc/unbound/unbound.conf</literal> as
that is the default in the CLI tooling which in turn enables
us to use <literal>unbound-control</literal> without passing a
custom configuration location.
</para>
<para>
The module has also been reworked to be
<link xlink:href="https://github.com/NixOS/rfcs/blob/master/rfcs/0042-config-option.md">RFC
0042</link> compliant. As such,
<literal>sevices.unbound.extraConfig</literal> has been
removed and replaced by
<link xlink:href="options.html#opt-services.unbound.settings">services.unbound.settings</link>.
<literal>services.unbound.interfaces</literal> has been
renamed to
<literal>services.unbound.settings.server.interface</literal>.
</para>
<para>
<literal>services.unbound.forwardAddresses</literal> and
<literal>services.unbound.allowedAccess</literal> have also
been changed to use the new settings interface. You can follow
the instructions when executing
<literal>nixos-rebuild</literal> to upgrade your configuration
to use the new interface.
</para>
</listitem>
<listitem>
<para>
The <literal>services.dnscrypt-proxy2</literal> module now
takes the upstream's example configuration and updates it with
the user's settings. An option has been added to restore the
old behaviour if you prefer to declare the configuration from
scratch.
</para>
</listitem>
<listitem>
<para>
NixOS now defaults to the unified cgroup hierarchy
(cgroupsv2). See the
<link xlink:href="https://www.redhat.com/sysadmin/fedora-31-control-group-v2">Fedora
Article for 31</link> for details on why this is desirable,
and how it impacts containers.
</para>
<para>
If you want to run containers with a runtime that does not yet
support cgroupsv2, you can switch back to the old behaviour by
setting
<link xlink:href="options.html#opt-systemd.enableUnifiedCgroupHierarchy">systemd.enableUnifiedCgroupHierarchy</link>
= <literal>false</literal>; and rebooting.
</para>
</listitem>
<listitem>
<para>
PulseAudio was upgraded to 14.0, with changes to the handling
of default sinks. See its
<link xlink:href="https://www.freedesktop.org/wiki/Software/PulseAudio/Notes/14.0/">release
notes</link>.
</para>
</listitem>
<listitem>
<para>
GNOME users may wish to delete their
<literal>~/.config/pulse</literal> due to the changes to
stream routing logic. See
<link xlink:href="https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/832">PulseAudio
bug 832</link> for more information.
</para>
</listitem>
<listitem>
<para>
The zookeeper package does not provide
<literal>zooInspector.sh</literal> anymore, as that
"contrib" has been dropped from upstream releases.
</para>
</listitem>
<listitem>
<para>
In the ACME module, the data used to build the hash for the
account directory has changed to accomodate new features to
reduce account rate limit issues. This will trigger new
account creation on the first rebuild following this update.
No issues are expected to arise from this, thanks to the new
account creation handling.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="options.html#opt-users.users._name_.createHome">users.users.<emphasis>name</emphasis>.createHome</link>
now always ensures home directory permissions to be
<literal>0700</literal>. Permissions had previously been
ignored for already existing home directories, possibly
leaving them readable by others. The option's description was
incorrect regarding ownership management and has been
simplified greatly.
</para>
</listitem>
<listitem>
<para>
When defining a new user, one of
<link xlink:href="options.html#opt-users.users._name_.isNormalUser">users.users.<emphasis>name</emphasis>.isNormalUser</link>
and
<link xlink:href="options.html#opt-users.users._name_.isSystemUser">users.users.<emphasis>name</emphasis>.isSystemUser</link>
is now required. This is to prevent accidentally giving a UID
above 1000 to system users, which could have unexpected
consequences, like running user activation scripts for system
users. Note that users defined with an explicit UID below 500
are exempted from this check, as
<link xlink:href="options.html#opt-users.users._name_.isSystemUser">users.users.<emphasis>name</emphasis>.isSystemUser</link>
has no effect for those.
</para>
</listitem>
<listitem>
<para>
The <literal>security.apparmor</literal> module, for the
<link xlink:href="https://gitlab.com/apparmor/apparmor/-/wikis/Documentation">AppArmor</link>
Mandatory Access Control system, has been substantialy
improved along with related tools, so that module maintainers
can now more easily write AppArmor profiles for NixOS. The
most notable change on the user-side is the new option
<link xlink:href="options.html#opt-security.apparmor.policies">security.apparmor.policies</link>,
replacing the previous <literal>profiles</literal> option to
provide a way to disable a profile and to select whether to
confine in enforce mode (default) or in complain mode (see
<literal>journalctl -b --grep apparmor</literal>).
Security-minded users may also want to enable
<link xlink:href="options.html#opt-security.apparmor.killUnconfinedConfinables">security.apparmor.killUnconfinedConfinables</link>,
at the cost of having some of their processes killed when
updating to a NixOS version introducing new AppArmor profiles.
</para>
</listitem>
<listitem>
<para>
The GNOME desktop manager once again installs gnome.epiphany
by default.
</para>
</listitem>
<listitem>
<para>
NixOS now generates empty <literal>/etc/netgroup</literal>.
<literal>/etc/netgroup</literal> defines network-wide groups
and may affect to setups using NIS.
</para>
</listitem>
<listitem>
<para>
Platforms, like <literal>stdenv.hostPlatform</literal>, no
longer have a <literal>platform</literal> attribute. It has
been (mostly) flattened away:
</para>
<itemizedlist>
<listitem>
<para>
<literal>platform.gcc</literal> is now
<literal>gcc</literal>
</para>
</listitem>
<listitem>
<para>
<literal>platform.kernel*</literal> is now
<literal>linux-kernel.*</literal>
</para>
</listitem>
</itemizedlist>
<para>
Additionally, <literal>platform.kernelArch</literal> moved to
the top level as <literal>linuxArch</literal> to match the
other <literal>*Arch</literal> variables.
</para>
<para>
The <literal>platform</literal> grouping of these things never
meant anything, and was just a historial/implementation
artifact that was overdue removal.
</para>
</listitem>
<listitem>
<para>
<literal>services.restic</literal> now uses a dedicated cache
directory for every backup defined in
<literal>services.restic.backups</literal>. The old global
cache directory, <literal>/root/.cache/restic</literal>, is
now unused and can be removed to free up disk space.
</para>
</listitem>
<listitem>
<para>
<literal>isync</literal>: The <literal>isync</literal>
compatibility wrapper was removed and the Master/Slave
terminology has been deprecated and should be replaced with
Far/Near in the configuration file.
</para>
</listitem>
<listitem>
<para>
The nix-gc service now accepts randomizedDelaySec (default: 0)
and persistent (default: true) parameters. By default nix-gc
will now run immediately if it would have been triggered at
least once during the time when the timer was inactive.
</para>
</listitem>
<listitem>
<para>
The <literal>rustPlatform.buildRustPackage</literal> function
is split into several hooks: cargoSetupHook to set up
vendoring for Cargo-based projects, cargoBuildHook to build a
project using Cargo, cargoInstallHook to install a project
using Cargo, and cargoCheckHook to run tests in Cargo-based
projects. With this change, mixed-language projects can use
the relevant hooks within builders other than
<literal>buildRustPackage</literal>. However, these changes
also required several API changes to
<literal>buildRustPackage</literal> itself:
</para>
<itemizedlist>
<listitem>
<para>
The <literal>target</literal> argument was removed.
Instead, <literal>buildRustPackage</literal> will always
use the same target as the C/C++ compiler that is used.
</para>
</listitem>
<listitem>
<para>
The <literal>cargoParallelTestThreads</literal> argument
was removed. Parallel tests are now disabled through
<literal>dontUseCargoParallelTests</literal>.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
The <literal>rustPlatform.maturinBuildHook</literal> hook was
added. This hook can be used with
<literal>buildPythonPackage</literal> to build Python packages
that are written in Rust and use Maturin as their build tool.
</para>
</listitem>
<listitem>
<para>
Kubernetes has
<link xlink:href="https://kubernetes.io/blog/2020/12/02/dont-panic-kubernetes-and-docker/">deprecated
docker</link> as container runtime. As a consequence, the
Kubernetes module now has support for configuration of custom
remote container runtimes and enables containerd by default.
Note that containerd is more strict regarding container image
OCI-compliance. As an example, images with CMD or ENTRYPOINT
defined as strings (not lists) will fail on containerd, while
working fine on docker. Please test your setup and container
images with containerd prior to upgrading.
</para>
</listitem>
<listitem>
<para>
The GitLab module now has support for automatic backups. A
schedule can be set with the
<link xlink:href="options.html#opt-services.gitlab.backup.startAt">services.gitlab.backup.startAt</link>
option.
</para>
</listitem>
<listitem>
<para>
Prior to this release, systemd would also read system units
from an undocumented
<literal>/etc/systemd-mutable/system</literal> path. This path
has been dropped from the defaults. That path (or others) can
be re-enabled by adding it to the
<link xlink:href="options.html#opt-boot.extraSystemdUnitPaths">boot.extraSystemdUnitPaths</link>
list.
</para>
</listitem>
<listitem>
<para>
PostgreSQL 9.5 is scheduled EOL during the 21.05 life cycle
and has been removed.
</para>
</listitem>
<listitem>
<para>
<link xlink:href="https://www.xfce.org/">Xfce4</link> relies
on GIO/GVfs for userspace virtual filesystem access in
applications like
<link xlink:href="https://docs.xfce.org/xfce/thunar/">thunar</link>
and
<link xlink:href="https://docs.xfce.org/apps/gigolo/">gigolo</link>.
For that to work, the gvfs nixos service is enabled by
default, and it can be configured with the specific package
that provides GVfs. Until now Xfce4 was setting it to use a
lighter version of GVfs (without support for samba). To avoid
conflicts with other desktop environments this setting has
been dropped. Users that still want it should add the
following to their system configuration:
</para>
<programlisting language="bash">
{
services.gvfs.package = pkgs.gvfs.override { samba = null; };
}
</programlisting>
</listitem>
<listitem>
<para>
The newly enabled <literal>systemd-pstore.service</literal>
now automatically evacuates crashdumps and panic logs from the
persistent storage to
<literal>/var/lib/systemd/pstore</literal>. This prevents
NVRAM from filling up, which ensures the latest diagnostic
data is always stored and alleviates problems with writing new
boot configurations.
</para>
</listitem>
<listitem>
<para>
Nixpkgs now contains
<link xlink:href="https://github.com/NixOS/nixpkgs/pull/118232">automatically
packaged GNOME Shell extensions</link> from the
<link xlink:href="https://extensions.gnome.org/">GNOME
Extensions</link> portal. You can find them, filed by their
UUID, under <literal>gnome38Extensions</literal> attribute for
GNOME 3.38 and under <literal>gnome40Extensions</literal> for
GNOME 40. Finally, the <literal>gnomeExtensions</literal>
attribute contains extensions for the latest GNOME Shell
version in Nixpkgs, listed under a more human-friendly name.
The unqualified attribute scope also contains manually
packaged extensions. Note that the automatically packaged
extensions are provided for convenience and are not checked or
guaranteed to work.
</para>
</listitem>
<listitem>
<para>
Erlang/OTP versions older than R21 got dropped. We also
dropped the cuter package, as it was purely an example of how
to build a package. We also dropped <literal>lfe_1_2</literal>
as it could not build with R21+. Moving forward, we expect to
only support 3 yearly releases of OTP.
</para>
</listitem>
</itemizedlist>
</section>
</section>
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