nixpkgs-suyu/nixos/doc/manual/release-notes/rl-1703.xml

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<section xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xi="http://www.w3.org/2001/XInclude"
version="5.0"
xml:id="sec-release-17.03">
<title>Release 17.03 (“XXX”, 2017/03/??)</title>
<para>In addition to numerous new and upgraded packages, this release
has the following highlights: </para>
<itemizedlist>
<listitem>
<para>Nixpkgs is now extensible through overlays. See the <link
xlink:href="https://nixos.org/nixpkgs/manual/#sec-overlays-install">Nixpkgs
manual</link> for more information.</para>
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</listitem>
</itemizedlist>
<para>The following new services were added since the last release:</para>
<itemizedlist>
<listitem>
<para></para>
</listitem>
</itemizedlist>
<para>When upgrading from a previous release, please be aware of the
following incompatible changes:</para>
<itemizedlist>
<listitem>
<para>
<literal>stdenv.overrides</literal> is now expected to take <literal>self</literal>
and <literal>super</literal> arguments. See <literal>lib.trivial.extends</literal>
for what those parameters represent.
</para>
</listitem>
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<listitem>
<para>
<literal>gnome</literal> alias has been removed along with
<literal>gtk</literal>, <literal>gtkmm</literal> and several others.
Now you need to use versioned attributes, like <literal>gnome3</literal>.
</para>
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</listitem>
<listitem>
<para>
The attribute name of the Radicale daemon has been changed from
<literal>pythonPackages.radicale</literal> to
<literal>radicale</literal>.
</para>
</listitem>
<listitem>
<para>
The Yama LSM is now enabled by default in the kernel,
which prevents ptracing non-child processes.
This means you will not be able to attach gdb to an existing process,
but will need to start that process from gdb (so it is a child).
</para>
</listitem>
<listitem>
<para>
The <literal>stripHash</literal> bash function in <literal>stdenv</literal>
changed according to its documentation; it now outputs the stripped name to
<literal>stdout</literal> instead of putting it in the variable
<literal>strippedName</literal>.
</para>
</listitem>
<listitem>
<para>PHP now scans for extra configuration .ini files in /etc/php.d
instead of /etc. This prevents accidentally loading non-PHP .ini files
that may be in /etc.
</para>
</listitem>
<listitem>
<para>
Parsoid service now uses YAML configuration format.
<literal>service.parsoid.interwikis</literal> is now called
<literal>service.parsoid.wikis</literal> and is a list of either API URLs
or attribute sets as specified in parsoid's documentation.
</para>
</listitem>
<listitem>
<para>
<literal>Ntpd</literal> was replaced by
<literal>systemd-timesyncd</literal> as the default service to synchronize
system time with a remote NTP server. The old behavior can be restored by
setting <literal>services.ntp.enable</literal> to <literal>true</literal>.
Upstream time servers for all NTP implementations are now configured using
<literal>networking.timeServers</literal>.
</para>
</listitem>
<listitem>
<para><literal>overridePackages</literal> function no longer exists.
It is replaced by <link
xlink:href="https://nixos.org/nixpkgs/manual/#sec-overlays-install">
overlays</link>. For example, the following code:
<programlisting>
let
pkgs = import &lt;nixpkgs&gt {};
in
pkgs.overridePackages (self: super: ...)
</programlisting>
Should be replaced by:
<programlisting>
let
pkgs = import &lt;nixpkgs&gt {}; in
in
import pkgs.path { overlays = [(self: super: ...)] }
</programlisting>
</para>
</listitem>
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</itemizedlist>
<para>Other notable improvements:</para>
<itemizedlist>
<listitem>
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<para>Module type system have a new extensible option types feature that
allow to extend certain types, such as enum, through multiple option
declarations of the same option across multiple modules.
</para>
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</listitem>
</itemizedlist>
</section>