home-manager/doc/release-notes/rl-1909.xml

<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-19.09">
 <title>Release 19.09 (unreleased)</title>

 <para>
  This is the current unstable branch and the information in this section is
  therefore not final.
 </para>

 <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-19.09-state-version-changes">
  <title>State Version Changes</title>

  <para>
   The state version in this release includes the changes below. These changes
   are only active if the <option>home.stateVersion</option> option is set to
   "19.09" or later.
  </para>

  <itemizedlist>
   <listitem>
    <para>
     The <option>programs.firefox.package</option> option now expects a wrapped
     Firefox package and defaults to <code>pkgs.firefox</code>.
    </para>
   </listitem>
   <listitem>
    <para>
     The options <option>home.keyboard.layout</option> and
     <option>home.keyboard.variant</option> now default to
     <literal>null</literal>, which indicates that the system value should be
     used.
    </para>
   </listitem>
  </itemizedlist>
 </section>
</section>