release-notes/18.09: Copy release notes from the upcomming release

This ensures that any further changes needing notes that belong in 18.09
off this common-ancestor commit can be easily merged to both
`release-18.0`9 and `master`.

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

@@ -139,50 +139,6 @@ $ nix-instantiate -E '(import <nixpkgsunstable> {}).gitFull'
      seen a complete rewrite. (See above.)
     </para>
    </listitem>
-   <listitem>
-    <para>
-     The minimum version of Nix required to evaluate Nixpkgs is now 2.0.
-    </para>
-    <itemizedlist>
-     <listitem>
-      <para>
-       For users of NixOS 18.03, NixOS 18.03 defaulted to Nix 2.0, but
-       supported using Nix 1.11 by setting <literal>nix.package =
-       pkgs.nix1;</literal>. If this option is set to a Nix 1.11 package, you
-       will need to either unset the option or upgrade it to Nix 2.0.
-      </para>
-     </listitem>
-     <listitem>
-      <para>
-       For users of NixOS 17.09, you will first need to upgrade Nix by setting
-       <literal>nix.package = pkgs.nixStable2;</literal> and run
-       <command>nixos-rebuild switch</command> as the <literal>root</literal>
-       user.
-      </para>
-     </listitem>
-     <listitem>
-      <para>
-       For users of a daemon-less Nix installation on Linux or macOS, you can
-       upgrade Nix by running <command>curl https://nixos.org/nix/install |
-       sh</command>, or prior to doing a channel update, running
-       <command>nix-env -iA nix</command>.
-      </para>
-      <para>
-       If you have already run a channel update and Nix is no longer able to
-       evaluate Nixpkgs, the error message printed should provide adequate
-       directions for upgrading Nix.
-      </para>
-     </listitem>
-     <listitem>
-      <para>
-       For users of the Nix daemon on macOS, you can upgrade Nix by running
-       <command>sudo -i sh -c 'nix-channel --update &amp;&amp; nix-env -iA
-       nixpkgs.nix'; sudo launchctl stop org.nixos.nix-daemon; sudo launchctl
-       start org.nixos.nix-daemon</command>.
-      </para>
-     </listitem>
-    </itemizedlist>
-   </listitem>
    <listitem>
     <para>
      <literal>lib.strict</literal> is removed. Use
@@ -451,6 +407,14 @@ inherit (pkgs.nixos {
      deprecated. Use <literal>networking.networkmanager.dns</literal> instead.
     </para>
    </listitem>
+   <listitem>
+     <para>
+     The Kubernetes package has been bumped to major version 1.11.
+     Please consult the
+     <link xlink:href="https://github.com/kubernetes/kubernetes/blob/release-1.11/CHANGELOG-1.11.md">release notes</link>
+     for details on new features and api changes.
+    </para>
+   </listitem>
    <listitem>
     <para>
      The option
@@ -536,6 +500,21 @@ inherit (pkgs.nixos {
       to <literal>true</literal>.
     </para>
   </listitem>
+  <listitem>
+    <para>
+      NixOS option descriptions are now automatically broken up into individual
+      paragraphs if the text contains two consecutive newlines, so it's no
+      longer necessary to use <code>&lt;/para&gt;&lt;para&gt;</code> to start
+      a new paragraph.
+    </para>
+  </listitem>
+  <listitem>
+    <para>
+      Top-level <literal>buildPlatform</literal>, <literal>hostPlatform</literal>, and <literal>targetPlatform</literal> in Nixpkgs are deprecated.
+      Please use their equivalents in <literal>stdenv</literal> instead:
+      <literal>stdenv.buildPlatform</literal>, <literal>stdenv.hostPlatform</literal>, and <literal>stdenv.targetPlatform</literal>.
+    </para>
+  </listitem>
   </itemizedlist>
  </section>
 </section>