nixpkgs/nixos/doc/manual/release-notes/rl-1809.xml

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         xml:id="sec-release-18.09">

<title>Release 18.09 (“Jellyfish”, 2018/09/??)</title>

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         xml:id="sec-release-18.09-highlights">

<title>Highlights</title>

<para>In addition to numerous new and upgraded packages, this release
has the following highlights: </para>

<itemizedlist>
  <listitem>
    <para>
      TODO
    </para>
  </listitem>

</itemizedlist>

</section>
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         xml:id="sec-release-18.09-new-services">

<title>New Services</title>

<para>The following new services were added since the last release:</para>

<itemizedlist>
  <listitem>
    <para></para>
  </listitem>
</itemizedlist>

</section>
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         xml:id="sec-release-18.09-incompatibilities">

<title>Backward Incompatibilities</title>

<para>When upgrading from a previous release, please be aware of the
following incompatible changes:</para>

<itemizedlist>
  <listitem>
    <para>
      The <literal>clementine</literal> package points now to the free derivation.
      <literal>clementineFree</literal> is removed now and <literal>clementineUnfree</literal>
      points to the package which is bundled with the unfree <literal>libspotify</literal> package.
    </para>
  </listitem>
</itemizedlist>

</section>
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         xml:id="sec-release-18.09-notable-changes">

<title>Other Notable Changes</title>

<itemizedlist>
  <listitem>
    <para>
      The <literal>pkgs</literal> argument to NixOS modules can now be set directly using <literal>nixpkgs.pkgs</literal>. Previously, only the <literal>system</literal>, <literal>config</literal> and <literal>overlays</literal> arguments could be used to influence <literal>pkgs</literal>.
    </para>
  </listitem>
  <listitem>
    <para>
      A NixOS system can now be constructed more easily based on a preexisting invocation of Nixpkgs. For example:
      <programlisting>
inherit (pkgs.nixos {
  boot.loader.grub.enable = false;
  fileSystems."/".device = "/dev/xvda1";
}) toplevel kernel initialRamdisk manual;
      </programlisting>

      This benefits evaluation performance, lets you write Nixpkgs packages that depend on NixOS images and is consistent with a deployment architecture that would be centered around Nixpkgs overlays.
    </para>
  </listitem>
</itemizedlist>

</section>
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