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<a href="modprobeConfig/" class="md-nav__link">
<span class="md-ellipsis">
modprobeConfig
</span>
</a>
</li>
<li class="md-nav__item">
<a href="plymouth/" class="md-nav__link">
<span class="md-ellipsis">
Plymouth
</span>
</a>
</li>
<li class="md-nav__item">
<a href="specialFileSystems/" class="md-nav__link">
<span class="md-ellipsis">
specialFileSystems
</span>
</a>
</li>
<li class="md-nav__item">
<a href="swraid/" class="md-nav__link">
<span class="md-ellipsis">
Swraid
</span>
</a>
</li>
<li class="md-nav__item">
<a href="tmp/" class="md-nav__link">
<span class="md-ellipsis">
Tmp
</span>
</a>
</li>
<li class="md-nav__item">
<a href="uki/" class="md-nav__link">
<span class="md-ellipsis">
Uki
</span>
</a>
</li>
<li class="md-nav__item">
<a href="uvesafb/" class="md-nav__link">
<span class="md-ellipsis">
Uvesafb
</span>
</a>
</li>
<li class="md-nav__item">
<a href="zfs/" class="md-nav__link">
<span class="md-ellipsis">
Zfs
</span>
</a>
</li>
</ul>
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</li>
<li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
<a href="../networking/" class="md-nav__link">
<span class="md-ellipsis">
Networking
</span>
<span class="md-nav__icon md-icon"></span>
</a>
</li>
<li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
<a href="../programs/_1password-gui/" class="md-nav__link">
<span class="md-ellipsis">
Programs
</span>
<span class="md-nav__icon md-icon"></span>
</a>
</li>
<li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
<a href="../security/" class="md-nav__link">
<span class="md-ellipsis">
Security
</span>
<span class="md-nav__icon md-icon"></span>
</a>
</li>
<li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
<a href="../services/" class="md-nav__link">
<span class="md-ellipsis">
Services
</span>
<span class="md-nav__icon md-icon"></span>
</a>
</li>
<li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
<a href="../systemd/" class="md-nav__link">
<span class="md-ellipsis">
Systemd
</span>
<span class="md-nav__icon md-icon"></span>
</a>
</li>
<li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
<a href="../users/" class="md-nav__link">
<span class="md-ellipsis">
Users
</span>
<span class="md-nav__icon md-icon"></span>
</a>
</li>
<li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
<a href="../virtualisation/" class="md-nav__link">
<span class="md-ellipsis">
Virtualisation
</span>
<span class="md-nav__icon md-icon"></span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
<a href="../../Nixpkgs/" class="md-nav__link">
<span class="md-ellipsis">
Nixpkgs
</span>
<span class="md-nav__icon md-icon"></span>
</a>
</li>
</ul>
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</div>
</div>
<div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" >
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
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<span class="md-nav__icon md-icon"></span>
Table of contents
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<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
<li class="md-nav__item">
<a href="#bootblacklistedkernelmodules" class="md-nav__link">
<span class="md-ellipsis">
boot.blacklistedKernelModules
</span>
</a>
<nav class="md-nav" aria-label="boot.blacklistedKernelModules">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default" class="md-nav__link">
<span class="md-ellipsis">
Default
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#example" class="md-nav__link">
<span class="md-ellipsis">
Example
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#bootconsoleloglevel" class="md-nav__link">
<span class="md-ellipsis">
boot.consoleLogLevel
</span>
</a>
<nav class="md-nav" aria-label="boot.consoleLogLevel">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_1" class="md-nav__link">
<span class="md-ellipsis">
Default
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#bootdevshmsize" class="md-nav__link">
<span class="md-ellipsis">
boot.devShmSize
</span>
</a>
<nav class="md-nav" aria-label="boot.devShmSize">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_2" class="md-nav__link">
<span class="md-ellipsis">
Default
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#example_1" class="md-nav__link">
<span class="md-ellipsis">
Example
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#bootdevsize" class="md-nav__link">
<span class="md-ellipsis">
boot.devSize
</span>
</a>
<nav class="md-nav" aria-label="boot.devSize">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_3" class="md-nav__link">
<span class="md-ellipsis">
Default
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#example_2" class="md-nav__link">
<span class="md-ellipsis">
Example
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#bootextramodprobeconfig" class="md-nav__link">
<span class="md-ellipsis">
boot.extraModprobeConfig
</span>
</a>
<nav class="md-nav" aria-label="boot.extraModprobeConfig">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_4" class="md-nav__link">
<span class="md-ellipsis">
Default
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#example_3" class="md-nav__link">
<span class="md-ellipsis">
Example
</span>
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#bootextramodulepackages" class="md-nav__link">
<span class="md-ellipsis">
boot.extraModulePackages
</span>
</a>
<nav class="md-nav" aria-label="boot.extraModulePackages">
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<li class="md-nav__item">
<a href="#default_5" class="md-nav__link">
<span class="md-ellipsis">
Default
</span>
</a>
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<li class="md-nav__item">
<a href="#example_4" class="md-nav__link">
<span class="md-ellipsis">
Example
</span>
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</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#bootextrasystemdunitpaths" class="md-nav__link">
<span class="md-ellipsis">
boot.extraSystemdUnitPaths
</span>
</a>
<nav class="md-nav" aria-label="boot.extraSystemdUnitPaths">
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<li class="md-nav__item">
<a href="#default_6" class="md-nav__link">
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Default
</span>
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</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#bootgrowpartition" class="md-nav__link">
<span class="md-ellipsis">
boot.growPartition
</span>
</a>
<nav class="md-nav" aria-label="boot.growPartition">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_7" class="md-nav__link">
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Default
</span>
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<li class="md-nav__item">
<a href="#example_5" class="md-nav__link">
<span class="md-ellipsis">
Example
</span>
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</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#boothardwarescan" class="md-nav__link">
<span class="md-ellipsis">
boot.hardwareScan
</span>
</a>
<nav class="md-nav" aria-label="boot.hardwareScan">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_8" class="md-nav__link">
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Default
</span>
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</li>
</ul>
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<li class="md-nav__item">
<a href="#bootkernelmodules" class="md-nav__link">
<span class="md-ellipsis">
boot.kernelModules
</span>
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<nav class="md-nav" aria-label="boot.kernelModules">
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<li class="md-nav__item">
<a href="#default_9" class="md-nav__link">
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Default
</span>
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</li>
</ul>
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<li class="md-nav__item">
<a href="#bootkernelpackages" class="md-nav__link">
<span class="md-ellipsis">
boot.kernelPackages
</span>
</a>
<nav class="md-nav" aria-label="boot.kernelPackages">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_10" class="md-nav__link">
<span class="md-ellipsis">
Default
</span>
</a>
</li>
<li class="md-nav__item">
<a href="#example_6" class="md-nav__link">
<span class="md-ellipsis">
Example
</span>
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</li>
</ul>
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</li>
<li class="md-nav__item">
<a href="#bootkernelparams" class="md-nav__link">
<span class="md-ellipsis">
boot.kernelParams
</span>
</a>
<nav class="md-nav" aria-label="boot.kernelParams">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_11" class="md-nav__link">
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Default
</span>
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</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#bootkernelpatches" class="md-nav__link">
<span class="md-ellipsis">
boot.kernelPatches
</span>
</a>
<nav class="md-nav" aria-label="boot.kernelPatches">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_12" class="md-nav__link">
<span class="md-ellipsis">
Default
</span>
</a>
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<li class="md-nav__item">
<a href="#example_7" class="md-nav__link">
<span class="md-ellipsis">
Example
</span>
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</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#bootpostbootcommands" class="md-nav__link">
<span class="md-ellipsis">
boot.postBootCommands
</span>
</a>
<nav class="md-nav" aria-label="boot.postBootCommands">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_13" class="md-nav__link">
<span class="md-ellipsis">
Default
</span>
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<li class="md-nav__item">
<a href="#example_8" class="md-nav__link">
<span class="md-ellipsis">
Example
</span>
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</li>
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</li>
<li class="md-nav__item">
<a href="#bootreadonlynixstore" class="md-nav__link">
<span class="md-ellipsis">
boot.readOnlyNixStore
</span>
</a>
<nav class="md-nav" aria-label="boot.readOnlyNixStore">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#default_14" class="md-nav__link">
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Default
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</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#bootresumedevice" class="md-nav__link">
<span class="md-ellipsis">
boot.resumeDevice
</span>
</a>
<nav class="md-nav" aria-label="boot.resumeDevice">
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<a href="#default_15" class="md-nav__link">
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Default
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<a href="#example_9" class="md-nav__link">
<span class="md-ellipsis">
Example
</span>
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<li class="md-nav__item">
<a href="#bootrunsize" class="md-nav__link">
<span class="md-ellipsis">
boot.runSize
</span>
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<nav class="md-nav" aria-label="boot.runSize">
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Default
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Example
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<a href="#bootsupportedfilesystems" class="md-nav__link">
<span class="md-ellipsis">
boot.supportedFilesystems
</span>
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<nav class="md-nav" aria-label="boot.supportedFilesystems">
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<a href="#default_17" class="md-nav__link">
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Default
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Example
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<a href="#bootsystemdexecutable" class="md-nav__link">
<span class="md-ellipsis">
boot.systemdExecutable
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Default
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<li class="md-nav__item">
<a href="#bootvesa" class="md-nav__link">
<span class="md-ellipsis">
boot.vesa
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Default
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<a href="#bootenablecontainers" class="md-nav__link">
<span class="md-ellipsis">
boot.enableContainers
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Default
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<a href="#bootiscontainer" class="md-nav__link">
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boot.isContainer
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Default
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<div class="md-content" data-md-component="content">
<article class="md-content__inner md-typeset">
<h1>Index</h1>
<h2 boot-blacklistedKernelModules="boot-blacklistedKernelModules" id="bootblacklistedkernelmodules"><code>boot.blacklistedKernelModules</code></h2>
<p>List of names of kernel modules that should not be loaded
automatically by the hardware probing code.</p>
<p><strong>Type:</strong> <code>list of string</code></p>
<h3 boot-blacklistedKernelModules-default="boot-blacklistedKernelModules-default" id="default">Default</h3>
<p><code class="highlight"><span class="p">[</span> <span class="p">]</span></code></p>
<h3 boot-blacklistedKernelModules-example="boot-blacklistedKernelModules-example" id="example">Example</h3>
<p><code class="highlight"><span class="p">[</span><span class="s2">&quot;cirrusfb&quot;</span><span class="s2">&quot;i2c_piix4&quot;</span><span class="p">]</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/modprobe.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/modprobe.nix</a></p>
<h2 boot-consoleLogLevel="boot-consoleLogLevel" id="bootconsoleloglevel"><code>boot.consoleLogLevel</code></h2>
<p>The kernel console <code>loglevel</code>. All Kernel Messages with a log level smaller
than this setting will be printed to the console.</p>
<p><strong>Type:</strong> <code>signed integer</code></p>
<h3 boot-consoleLogLevel-default="boot-consoleLogLevel-default" id="default_1">Default</h3>
<p><code class="highlight"><span class="mi">4</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix</a></p>
<h2 boot-devShmSize="boot-devShmSize" id="bootdevshmsize"><code>boot.devShmSize</code></h2>
<p>Size limit for the /dev/shm tmpfs. Look at mount(8), tmpfs size option,
for the accepted syntax.</p>
<p><strong>Type:</strong> <code>string</code></p>
<h3 boot-devShmSize-default="boot-devShmSize-default" id="default_2">Default</h3>
<p><code class="highlight"><span class="s2">&quot;50%&quot;</span></code></p>
<h3 boot-devShmSize-example="boot-devShmSize-example" id="example_1">Example</h3>
<p><code class="highlight"><span class="s2">&quot;256m&quot;</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/tasks/filesystems.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/tasks/filesystems.nix</a></p>
<h2 boot-devSize="boot-devSize" id="bootdevsize"><code>boot.devSize</code></h2>
<p>Size limit for the /dev tmpfs. Look at mount(8), tmpfs size option,
for the accepted syntax.</p>
<p><strong>Type:</strong> <code>string</code></p>
<h3 boot-devSize-default="boot-devSize-default" id="default_3">Default</h3>
<p><code class="highlight"><span class="s2">&quot;5%&quot;</span></code></p>
<h3 boot-devSize-example="boot-devSize-example" id="example_2">Example</h3>
<p><code class="highlight"><span class="s2">&quot;32m&quot;</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/tasks/filesystems.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/tasks/filesystems.nix</a></p>
<h2 boot-extraModprobeConfig="boot-extraModprobeConfig" id="bootextramodprobeconfig"><code>boot.extraModprobeConfig</code></h2>
<p>Any additional configuration to be appended to the generated
{file}<code>modprobe.conf</code>. This is typically used to
specify module options. See
{manpage}<code>modprobe.d(5)</code> for details.</p>
<p><strong>Type:</strong> <code>strings concatenated with "\n"</code></p>
<h3 boot-extraModprobeConfig-default="boot-extraModprobeConfig-default" id="default_4">Default</h3>
<p><code class="highlight"><span class="s2">&quot;&quot;</span></code></p>
<h3 boot-extraModprobeConfig-example="boot-extraModprobeConfig-example" id="example_3">Example</h3>
<p><code class="highlight"><span class="s s-Multiline">&#39;&#39;</span><span class="s s-Multiline"> options parport_pc io=0x378 irq=7 dma=1</span><span class="s s-Multiline">&#39;&#39;</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/modprobe.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/modprobe.nix</a></p>
<h2 boot-extraModulePackages="boot-extraModulePackages" id="bootextramodulepackages"><code>boot.extraModulePackages</code></h2>
<p>A list of additional packages supplying kernel modules.
<strong>Type:</strong> <code>list of package</code></p>
<h3 boot-extraModulePackages-default="boot-extraModulePackages-default" id="default_5">Default</h3>
<p><code class="highlight"><span class="p">[</span> <span class="p">]</span></code></p>
<h3 boot-extraModulePackages-example="boot-extraModulePackages-example" id="example_4">Example</h3>
<p><code class="highlight"><span class="p">[</span> config<span class="o">.</span>boot<span class="o">.</span>kernelPackages<span class="o">.</span>nvidia_x11 <span class="p">]</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix</a></p>
<h2 boot-extraSystemdUnitPaths="boot-extraSystemdUnitPaths" id="bootextrasystemdunitpaths"><code>boot.extraSystemdUnitPaths</code></h2>
<p>Additional paths that get appended to the SYSTEMD_UNIT_PATH environment variable
that can contain mutable unit files.</p>
<p><strong>Type:</strong> <code>list of string</code></p>
<h3 boot-extraSystemdUnitPaths-default="boot-extraSystemdUnitPaths-default" id="default_6">Default</h3>
<p><code class="highlight"><span class="p">[</span> <span class="p">]</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/stage-2.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/stage-2.nix</a></p>
<h2 boot-growPartition="boot-growPartition" id="bootgrowpartition"><code>boot.growPartition</code></h2>
<p>Whether to enable growing the root partition on boot.
<strong>Type:</strong> <code>boolean</code></p>
<h3 boot-growPartition-default="boot-growPartition-default" id="default_7">Default</h3>
<p><code class="highlight"><span class="no">false</span></code></p>
<h3 boot-growPartition-example="boot-growPartition-example" id="example_5">Example</h3>
<p><code class="highlight"><span class="no">true</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/grow-partition.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/grow-partition.nix</a></p>
<h2 boot-hardwareScan="boot-hardwareScan" id="boothardwarescan"><code>boot.hardwareScan</code></h2>
<p>Whether to try to load kernel modules for all detected hardware.
Usually this does a good job of providing you with the modules
you need, but sometimes it can crash the system or cause other
nasty effects.</p>
<p><strong>Type:</strong> <code>boolean</code></p>
<h3 boot-hardwareScan-default="boot-hardwareScan-default" id="default_8">Default</h3>
<p><code class="highlight"><span class="no">true</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/services/hardware/udev.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/services/hardware/udev.nix</a></p>
<h2 boot-kernelModules="boot-kernelModules" id="bootkernelmodules"><code>boot.kernelModules</code></h2>
<p>The set of kernel modules to be loaded in the second stage of
the boot process. Note that modules that are needed to
mount the root file system should be added to
{option}<code>boot.initrd.availableKernelModules</code> or
{option}<code>boot.initrd.kernelModules</code>.</p>
<p><strong>Type:</strong> <code>list of string</code></p>
<h3 boot-kernelModules-default="boot-kernelModules-default" id="default_9">Default</h3>
<p><code class="highlight"><span class="p">[</span> <span class="p">]</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix</a></p>
<h2 boot-kernelPackages="boot-kernelPackages" id="bootkernelpackages"><code>boot.kernelPackages</code></h2>
<p>This option allows you to override the Linux kernel used by
NixOS. Since things like external kernel module packages are
tied to the kernel you're using, it also overrides those.
This option is a function that takes Nixpkgs as an argument
(as a convenience), and returns an attribute set containing at
the very least an attribute {var}<code>kernel</code>.
Additional attributes may be needed depending on your
configuration. For instance, if you use the NVIDIA X driver,
then it also needs to contain an attribute
{var}<code>nvidia_x11</code>.</p>
<p>Please note that we strictly support kernel versions that are
maintained by the Linux developers only. More information on the
availability of kernel versions is documented
<a href="https://nixos.org/manual/nixos/unstable/index.html#sec-kernel-config">in the Linux section of the manual</a>.</p>
<p><strong>Type:</strong> <code>raw value</code></p>
<h3 boot-kernelPackages-default="boot-kernelPackages-default" id="default_10">Default</h3>
<p><code class="highlight">pkgs<span class="o">.</span>linuxPackages</code></p>
<h3 boot-kernelPackages-example="boot-kernelPackages-example" id="example_6">Example</h3>
<p><code class="highlight">pkgs<span class="o">.</span>linuxKernel<span class="o">.</span>packages<span class="o">.</span>linux_5_10</code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix</a></p>
<h2 boot-kernelParams="boot-kernelParams" id="bootkernelparams"><code>boot.kernelParams</code></h2>
<p>Parameters added to the kernel command line.
<strong>Type:</strong> <code>list of string, with spaces inside double quotes</code></p>
<h3 boot-kernelParams-default="boot-kernelParams-default" id="default_11">Default</h3>
<p><code class="highlight"><span class="p">[</span> <span class="p">]</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix</a></p>
<h2 boot-kernelPatches="boot-kernelPatches" id="bootkernelpatches"><code>boot.kernelPatches</code></h2>
<p>A list of additional patches to apply to the kernel.</p>
<p>Every item should be an attribute set with the following attributes:</p>
<div class="highlight"><pre><span></span><code><span class="p">{</span>
<span class="ss">name</span> <span class="o">=</span> <span class="s2">&quot;foo&quot;</span><span class="p">;</span> <span class="c1"># descriptive name, required</span>
<span class="ss">patch</span> <span class="o">=</span> <span class="l">./foo.patch</span><span class="p">;</span> <span class="c1"># path or derivation that contains the patch source</span>
<span class="c1"># (required, but can be null if only config changes</span>
<span class="c1"># are needed)</span>
<span class="ss">extraStructuredConfig</span> <span class="o">=</span> <span class="p">{</span> <span class="c1"># attrset of extra configuration parameters without the CONFIG_ prefix</span>
<span class="ss">FOO</span> <span class="o">=</span> lib<span class="o">.</span>kernel<span class="o">.</span>yes<span class="p">;</span> <span class="c1"># (optional)</span>
<span class="p">};</span> <span class="c1"># values should generally be lib.kernel.yes,</span>
<span class="c1"># lib.kernel.no or lib.kernel.module</span>
<span class="ss">features</span> <span class="o">=</span> <span class="p">{</span> <span class="c1"># attrset of extra &quot;features&quot; the kernel is considered to have</span>
<span class="ss">foo</span> <span class="o">=</span> <span class="no">true</span><span class="p">;</span> <span class="c1"># (may be checked by other NixOS modules, optional)</span>
<span class="p">};</span>
<span class="ss">extraConfig</span> <span class="o">=</span> <span class="s2">&quot;FOO y&quot;</span><span class="p">;</span> <span class="c1"># extra configuration options in string form without the CONFIG_ prefix</span>
<span class="c1"># (optional, multiple lines allowed to specify multiple options)</span>
<span class="c1"># (deprecated, use extraStructuredConfig instead)</span>
<span class="p">}</span>
</code></pre></div>
<p>There's a small set of existing kernel patches in Nixpkgs, available as <code>pkgs.kernelPatches</code>,
that follow this format and can be used directly.</p>
<p><strong>Type:</strong> <code>list of (attribute set)</code></p>
<h3 boot-kernelPatches-default="boot-kernelPatches-default" id="default_12">Default</h3>
<p><code class="highlight"><span class="p">[</span> <span class="p">]</span></code></p>
<h3 boot-kernelPatches-example="boot-kernelPatches-example" id="example_7">Example</h3>
<p><code class="highlight"><span class="p">[</span><span class="p">{</span><span class="ss">name</span> <span class="o">=</span> <span class="s2">&quot;foo&quot;</span><span class="p">;</span><span class="ss">patch</span> <span class="o">=</span> <span class="l">./foo.patch</span><span class="p">;</span>extraStructuredConfig<span class="o">.</span><span class="ss">FOO</span> <span class="o">=</span> lib<span class="o">.</span>kernel<span class="o">.</span>yes<span class="p">;</span>features<span class="o">.</span><span class="ss">foo</span> <span class="o">=</span> <span class="no">true</span><span class="p">;</span><span class="p">}</span><span class="p">{</span><span class="ss">name</span> <span class="o">=</span> <span class="s2">&quot;foo-ml-mbox&quot;</span><span class="p">;</span><span class="ss">patch</span> <span class="o">=</span> <span class="p">(</span>fetchurl <span class="p">{</span><span class="ss">url</span> <span class="o">=</span> <span class="s2">&quot;https://lore.kernel.org/lkml/19700205182810.58382-1-email@domain/t.mbox.gz&quot;</span><span class="p">;</span><span class="ss">hash</span> <span class="o">=</span> <span class="s2">&quot;sha256-...&quot;</span><span class="p">;</span><span class="p">});</span><span class="p">}</span><span class="p">]</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix</a></p>
<h2 boot-postBootCommands="boot-postBootCommands" id="bootpostbootcommands"><code>boot.postBootCommands</code></h2>
<p>Shell commands to be executed just before systemd is started.</p>
<p><strong>Type:</strong> <code>strings concatenated with "\n"</code></p>
<h3 boot-postBootCommands-default="boot-postBootCommands-default" id="default_13">Default</h3>
<p><code class="highlight"><span class="s2">&quot;&quot;</span></code></p>
<h3 boot-postBootCommands-example="boot-postBootCommands-example" id="example_8">Example</h3>
<p><code class="highlight"><span class="s2">&quot;rm -f /var/log/messages&quot;</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/stage-2.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/stage-2.nix</a></p>
<h2 boot-readOnlyNixStore="boot-readOnlyNixStore" id="bootreadonlynixstore"><code>boot.readOnlyNixStore</code></h2>
<p>If set, NixOS will enforce the immutability of the Nix store
by making {file}<code>/nix/store</code> a read-only bind
mount. Nix will automatically make the store writable when
needed.</p>
<p><strong>Type:</strong> <code>boolean</code></p>
<h3 boot-readOnlyNixStore-default="boot-readOnlyNixStore-default" id="default_14">Default</h3>
<p><code class="highlight"><span class="no">true</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/stage-2.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/stage-2.nix</a></p>
<h2 boot-resumeDevice="boot-resumeDevice" id="bootresumedevice"><code>boot.resumeDevice</code></h2>
<p>Device for manual resume attempt during boot. This should be used primarily
if you want to resume from file. If left empty, the swap partitions are used.
Specify here the device where the file resides.
You should also use {var}<code>boot.kernelParams</code> to specify
<code>«resume_offset»</code>.</p>
<p><strong>Type:</strong> <code>string</code></p>
<h3 boot-resumeDevice-default="boot-resumeDevice-default" id="default_15">Default</h3>
<p><code class="highlight"><span class="s2">&quot;&quot;</span></code></p>
<h3 boot-resumeDevice-example="boot-resumeDevice-example" id="example_9">Example</h3>
<p><code class="highlight"><span class="s2">&quot;/dev/sda3&quot;</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/stage-1.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/stage-1.nix</a></p>
<h2 boot-runSize="boot-runSize" id="bootrunsize"><code>boot.runSize</code></h2>
<p>Size limit for the /run tmpfs. Look at mount(8), tmpfs size option,
for the accepted syntax.</p>
<p><strong>Type:</strong> <code>string</code></p>
<h3 boot-runSize-default="boot-runSize-default" id="default_16">Default</h3>
<p><code class="highlight"><span class="s2">&quot;25%&quot;</span></code></p>
<h3 boot-runSize-example="boot-runSize-example" id="example_10">Example</h3>
<p><code class="highlight"><span class="s2">&quot;256m&quot;</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/tasks/filesystems.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/tasks/filesystems.nix</a></p>
<h2 boot-supportedFilesystems="boot-supportedFilesystems" id="bootsupportedfilesystems"><code>boot.supportedFilesystems</code></h2>
<p>Names of supported filesystem types, or an attribute set of file system types
and their state. The set form may be used together with <code>lib.mkForce</code> to
explicitly disable support for specific filesystems, e.g. to disable ZFS
with an unsupported kernel.</p>
<p><strong>Type:</strong> <code>(attribute set of boolean) or (list of string) convertible to it</code></p>
<h3 boot-supportedFilesystems-default="boot-supportedFilesystems-default" id="default_17">Default</h3>
<p><code class="highlight"><span class="p">{</span> <span class="p">}</span></code></p>
<h3 boot-supportedFilesystems-example="boot-supportedFilesystems-example" id="example_11">Example</h3>
<p><code class="highlight"><span class="p">{</span><span class="ss">btrfs</span> <span class="o">=</span> <span class="no">true</span><span class="p">;</span><span class="ss">zfs</span> <span class="o">=</span> lib<span class="o">.</span>mkForce <span class="no">false</span><span class="p">;</span><span class="p">}</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/tasks/filesystems.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/tasks/filesystems.nix</a></p>
<h2 boot-systemdExecutable="boot-systemdExecutable" id="bootsystemdexecutable"><code>boot.systemdExecutable</code></h2>
<p>The program to execute to start systemd.</p>
<p><strong>Type:</strong> <code>string</code></p>
<h3 boot-systemdExecutable-default="boot-systemdExecutable-default" id="default_18">Default</h3>
<p><code class="highlight"><span class="s2">&quot;/run/current-system/systemd/lib/systemd/systemd&quot;</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/stage-2.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/stage-2.nix</a></p>
<h2 boot-vesa="boot-vesa" id="bootvesa"><code>boot.vesa</code></h2>
<p>(Deprecated) This option, if set, activates the VESA 800x600 video
mode on boot and disables kernel modesetting. It is equivalent to
specifying <code>[ "vga=0x317" "nomodeset" ]</code> in the
{option}<code>boot.kernelParams</code> option. This option is
deprecated as of 2020: Xorg now works better with modesetting, and
you might want a different VESA vga setting, anyway.</p>
<p><strong>Type:</strong> <code>boolean</code></p>
<h3 boot-vesa-default="boot-vesa-default" id="default_19">Default</h3>
<p><code class="highlight"><span class="no">false</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/system/boot/kernel.nix</a></p>
<h2 boot-enableContainers="boot-enableContainers" id="bootenablecontainers"><code>boot.enableContainers</code></h2>
<p>Whether to enable support for NixOS containers. Defaults to true
(at no cost if containers are not actually used).</p>
<p><strong>Type:</strong> <code>boolean</code></p>
<h3 boot-enableContainers-default="boot-enableContainers-default" id="default_20">Default</h3>
<p><code class="highlight"><span class="no">true</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/virtualisation/nixos-containers.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/virtualisation/nixos-containers.nix</a></p>
<h2 boot-isContainer="boot-isContainer" id="bootiscontainer"><code>boot.isContainer</code></h2>
<p>Whether this NixOS machine is a lightweight container running
in another NixOS system.</p>
<p><strong>Type:</strong> <code>boolean</code></p>
<h3 boot-isContainer-default="boot-isContainer-default" id="default_21">Default</h3>
<p><code class="highlight"><span class="no">false</span></code></p>
<p><strong>Declared by:</strong> <a href="https://github.com/nixos/nixpkgs/blob/master/nixos/modules/virtualisation/nixos-containers.nix">https://github.com/nixos/nixpkgs/blob/master/nixos/modules/virtualisation/nixos-containers.nix</a></p>
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