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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Appendix B. NixOS Module Options</title><link rel="stylesheet" type="text/css" href="style.css" /><link rel="stylesheet" type="text/css" href="overrides.css" /><link rel="stylesheet" type="text/css" href="mono-blue.css" /><script src="highlight.pack.js" type="text/javascript"></script><script src="highlight.load.js" type="text/javascript"></script><meta name="generator" content="DocBook XSL Stylesheets V1.79.2" /><link rel="home" href="index.html" title="Home Manager Manual" /><link rel="up" href="index.html" title="Home Manager Manual" /><link rel="prev" href="options.html" title="Appendix A. Configuration Options" /><link rel="next" href="nix-darwin-options.html" title="Appendix C. nix-darwin Module Options" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Appendix B. NixOS Module Options</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="options.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="nix-darwin-options.html">Next</a></td></tr></table><hr /></div><div class="appendix"><div class="titlepage"><div><div><h1 class="title"><a id="ch-nixos-options"></a>Appendix B. NixOS Module Options</h1></div></div></div><div class="variablelist"><a id="nixos-options"></a><dl class="variablelist"><dt><span class="term"><a id="nixos-opt-_module.args"></a><a class="term" href="nixos-options.html#nixos-opt-_module.args"><code class="option">_module.args</code></a></span></dt><dd><p>Additional arguments passed to each module in addition to ones
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like <code class="literal">lib</code>, <code class="literal">config</code>,
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and <code class="literal">pkgs</code>, <code class="literal">modulesPath</code>.
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</p><p>
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This option is also available to all submodules. Submodules do not
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inherit args from their parent module, nor do they provide args to
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their parent module or sibling submodules. The sole exception to
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this is the argument <code class="literal">name</code> which is provided by
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parent modules to a submodule and contains the attribute name
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the submodule is bound to, or a unique generated name if it is
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not bound to an attribute.
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</p><p>
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Some arguments are already passed by default, of which the
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following <span class="emphasis"><em>cannot</em></span> be changed with this option:
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</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
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<code class="varname">lib</code>: The nixpkgs library.
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</p></li><li class="listitem"><p>
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<code class="varname">config</code>: The results of all options after merging the values from all modules together.
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</p></li><li class="listitem"><p>
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<code class="varname">options</code>: The options declared in all modules.
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</p></li><li class="listitem"><p>
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<code class="varname">specialArgs</code>: The <code class="literal">specialArgs</code> argument passed to <code class="literal">evalModules</code>.
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</p></li><li class="listitem"><p>
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All attributes of <code class="varname">specialArgs</code>
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</p><p>
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Whereas option values can generally depend on other option values
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thanks to laziness, this does not apply to <code class="literal">imports</code>, which
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must be computed statically before anything else.
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</p><p>
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For this reason, callers of the module system can provide <code class="literal">specialArgs</code>
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which are available during import resolution.
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</p><p>
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For NixOS, <code class="literal">specialArgs</code> includes
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<code class="varname">modulesPath</code>, which allows you to import
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extra modules from the nixpkgs package tree without having to
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somehow make the module aware of the location of the
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<code class="literal">nixpkgs</code> or NixOS directories.
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</p><pre class="programlisting">
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{ modulesPath, ... }: {
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imports = [
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(modulesPath + "/profiles/minimal.nix")
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];
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}
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</pre><p>
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</p></li></ul></div><p>
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</p><p>
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For NixOS, the default value for this option includes at least this argument:
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</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>
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<code class="varname">pkgs</code>: The nixpkgs package set according to
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the <code class="option">nixpkgs.pkgs</code> option.
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</p></li></ul></div><p>
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</p><p><span class="emphasis"><em>Type:</em></span> lazy attribute set of raw value</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/lib/modules.nix#blob-path" target="_top">
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<home-manager/lib/modules.nix>
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</a></code></td></tr></table></dd><dt><span class="term"><a id="nixos-opt-home-manager.backupFileExtension"></a><a class="term" href="nixos-options.html#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
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file extension rather than exiting with an error.
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</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">"backup"</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/default.nix#blob-path" target="_top">
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<home-manager/nixos/default.nix>
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</a></code></td></tr></table></dd><dt><span class="term"><a id="nixos-opt-home-manager.extraSpecialArgs"></a><a class="term" href="nixos-options.html#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
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option can be used to pass additional arguments to all modules.
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</p><p><span class="emphasis"><em>Type:</em></span> attribute set</p><p><span class="emphasis"><em>Default:</em></span> <code class="literal">
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{
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}
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</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/default.nix#blob-path" target="_top">
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<home-manager/nixos/default.nix>
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</a></code></td></tr></table></dd><dt><span class="term"><a id="nixos-opt-home-manager.sharedModules"></a><a class="term" href="nixos-options.html#nixos-opt-home-manager.sharedModules"><code class="option">home-manager.sharedModules</code></a></span></dt><dd><p>Extra modules added to all users.
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</p><p><span class="emphasis"><em>Type:</em></span> list of Home Manager modules</p><p><span class="emphasis"><em>Default:</em></span> <code class="literal">
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[
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]
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</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/default.nix#blob-path" target="_top">
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<home-manager/nixos/default.nix>
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</a></code></td></tr></table></dd><dt><span class="term"><a id="nixos-opt-home-manager.useGlobalPkgs"></a><a class="term" href="nixos-options.html#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>
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argument in Home Manager. This disables the Home Manager
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options <code class="option">nixpkgs.*</code>
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.</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/default.nix#blob-path" target="_top">
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<home-manager/nixos/default.nix>
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</a></code></td></tr></table></dd><dt><span class="term"><a id="nixos-opt-home-manager.useUserPackages"></a><a class="term" href="nixos-options.html#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
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<code class="option">users.users.<name>.packages</code> option
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.</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/default.nix#blob-path" target="_top">
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<home-manager/nixos/default.nix>
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</a></code></td></tr></table></dd><dt><span class="term"><a id="nixos-opt-home-manager.verbose"></a><a class="term" href="nixos-options.html#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/default.nix#blob-path" target="_top">
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<home-manager/nixos/default.nix>
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</a></code></td></tr></table></dd></dl></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="options.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="nix-darwin-options.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix A. Configuration Options </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Appendix C. nix-darwin Module Options</td></tr></table></div></body></html> |