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  </div><div class="appendix"> <div class="titlepage">  <div>   <div>    <h1 id="ch-nixos-options" class="title" >Appendix B. NixOS Configuration Options   </h1>  </div> </div></div><div class="variablelist">
<a id="nixos-options"></a>
 <dl class="variablelist">
<dt>
 <span class="term">
 <a id="nixos-opt-home-manager.backupFileExtension"></a><a class="term" href="nixos-options.xhtml#nixos-opt-home-manager.backupFileExtension"><code class="option">home-manager.backupFileExtension</code>
  </a>
 </span>
</dt>
<dd>
<p>On activation move existing files by appending the given
file extension rather than exiting with an error.</p>

<p><span class="emphasis"><em>Type:</em></span>
null or string</p>

<p><span class="emphasis"><em>Default:</em></span>
<code class="literal">null</code></p>

<p><span class="emphasis"><em>Example:</em></span>
<code class="literal">&quot;backup&quot;</code></p>

<p><span class="emphasis"><em>Declared by:</em></span></p>
<table border="0" summary="Simple list" class="simplelist">
<tr><td>
<code class="filename"><a class="filename"  href="https://github.com/nix-community/home-manager/blob/master/nixos/common.nix" target="_top">
&lt;home-manager/nixos/common.nix&gt;
</a></code>
</td></tr>
</table>
</dd>
<dt>
 <span class="term">
 <a id="nixos-opt-home-manager.extraSpecialArgs"></a><a class="term" href="nixos-options.xhtml#nixos-opt-home-manager.extraSpecialArgs"><code class="option">home-manager.extraSpecialArgs</code>
  </a>
 </span>
</dt>
<dd>
<p>Extra <code class="literal">specialArgs</code> passed to Home Manager. This
option can be used to pass additional arguments to all modules.</p>

<p><span class="emphasis"><em>Type:</em></span>
attribute set</p>

<p><span class="emphasis"><em>Default:</em></span>
<code class="literal">{ }</code></p>

<p><span class="emphasis"><em>Example:</em></span>
<code class="literal">{ inherit emacs-overlay; }</code></p>

<p><span class="emphasis"><em>Declared by:</em></span></p>
<table border="0" summary="Simple list" class="simplelist">
<tr><td>
<code class="filename"><a class="filename"  href="https://github.com/nix-community/home-manager/blob/master/nixos/common.nix" target="_top">
&lt;home-manager/nixos/common.nix&gt;
</a></code>
</td></tr>
</table>
</dd>
<dt>
 <span class="term">
 <a id="nixos-opt-home-manager.sharedModules"></a><a class="term" href="nixos-options.xhtml#nixos-opt-home-manager.sharedModules"><code class="option">home-manager.sharedModules</code>
  </a>
 </span>
</dt>
<dd>
<p>Extra modules added to all users.</p>

<p><span class="emphasis"><em>Type:</em></span>
list of raw value</p>

<p><span class="emphasis"><em>Default:</em></span>
<code class="literal">[ ]</code></p>

<p><span class="emphasis"><em>Example:</em></span>
<code class="literal">[ { home.packages = [ nixpkgs-fmt ]; } ]</code></p>

<p><span class="emphasis"><em>Declared by:</em></span></p>
<table border="0" summary="Simple list" class="simplelist">
<tr><td>
<code class="filename"><a class="filename"  href="https://github.com/nix-community/home-manager/blob/master/nixos/common.nix" target="_top">
&lt;home-manager/nixos/common.nix&gt;
</a></code>
</td></tr>
</table>
</dd>
<dt>
 <span class="term">
 <a id="nixos-opt-home-manager.useGlobalPkgs"></a><a class="term" href="nixos-options.xhtml#nixos-opt-home-manager.useGlobalPkgs"><code class="option">home-manager.useGlobalPkgs</code>
  </a>
 </span>
</dt>
<dd>
<p>Whether to enable using the system configuration’s <code class="literal">pkgs</code>
argument in Home Manager. This disables the Home Manager
options <code class="option">nixpkgs.*</code>.</p>

<p><span class="emphasis"><em>Type:</em></span>
boolean</p>

<p><span class="emphasis"><em>Default:</em></span>
<code class="literal">false</code></p>

<p><span class="emphasis"><em>Example:</em></span>
<code class="literal">true</code></p>

<p><span class="emphasis"><em>Declared by:</em></span></p>
<table border="0" summary="Simple list" class="simplelist">
<tr><td>
<code class="filename"><a class="filename"  href="https://github.com/nix-community/home-manager/blob/master/nixos/common.nix" target="_top">
&lt;home-manager/nixos/common.nix&gt;
</a></code>
</td></tr>
</table>
</dd>
<dt>
 <span class="term">
 <a id="nixos-opt-home-manager.useUserPackages"></a><a class="term" href="nixos-options.xhtml#nixos-opt-home-manager.useUserPackages"><code class="option">home-manager.useUserPackages</code>
  </a>
 </span>
</dt>
<dd>
<p>Whether to enable installation of user packages through the
<code class="option">users.users.&lt;name&gt;.packages</code> option.</p>

<p><span class="emphasis"><em>Type:</em></span>
boolean</p>

<p><span class="emphasis"><em>Default:</em></span>
<code class="literal">false</code></p>

<p><span class="emphasis"><em>Example:</em></span>
<code class="literal">true</code></p>

<p><span class="emphasis"><em>Declared by:</em></span></p>
<table border="0" summary="Simple list" class="simplelist">
<tr><td>
<code class="filename"><a class="filename"  href="https://github.com/nix-community/home-manager/blob/master/nixos/common.nix" target="_top">
&lt;home-manager/nixos/common.nix&gt;
</a></code>
</td></tr>
</table>
</dd>
<dt>
 <span class="term">
 <a id="nixos-opt-home-manager.users"></a><a class="term" href="nixos-options.xhtml#nixos-opt-home-manager.users"><code class="option">home-manager.users</code>
  </a>
 </span>
</dt>
<dd>
<p>Per-user Home Manager configuration.</p>

<p><span class="emphasis"><em>Type:</em></span>
attribute set of (Home Manager module)</p>

<p><span class="emphasis"><em>Default:</em></span>
<code class="literal">{ }</code></p>

<p><span class="emphasis"><em>Declared by:</em></span></p>
<table border="0" summary="Simple list" class="simplelist">
<tr><td>
<code class="filename"><a class="filename"  href="https://github.com/nix-community/home-manager/blob/master/nixos/common.nix" target="_top">
&lt;home-manager/nixos/common.nix&gt;
</a></code>
</td></tr>
</table>
</dd>
<dt>
 <span class="term">
 <a id="nixos-opt-home-manager.verbose"></a><a class="term" href="nixos-options.xhtml#nixos-opt-home-manager.verbose"><code class="option">home-manager.verbose</code>
  </a>
 </span>
</dt>
<dd>
<p>Whether to enable verbose output on activation.</p>

<p><span class="emphasis"><em>Type:</em></span>
boolean</p>

<p><span class="emphasis"><em>Default:</em></span>
<code class="literal">false</code></p>

<p><span class="emphasis"><em>Example:</em></span>
<code class="literal">true</code></p>

<p><span class="emphasis"><em>Declared by:</em></span></p>
<table border="0" summary="Simple list" class="simplelist">
<tr><td>
<code class="filename"><a class="filename"  href="https://github.com/nix-community/home-manager/blob/master/nixos/common.nix" target="_top">
&lt;home-manager/nixos/common.nix&gt;
</a></code>
</td></tr>
</table>
</dd>
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     <td width="40%" align="right" valign="top">&nbsp;Appendix C. nix-darwin Configuration Options</td>
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