mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-15 17:25:11 +00:00
187 lines
5.3 KiB
XML
187 lines
5.3 KiB
XML
<refentry xmlns="http://docbook.org/ns/docbook"
|
|
xmlns:xlink="http://www.w3.org/1999/xlink"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude">
|
|
|
|
<refmeta>
|
|
<refentrytitle><command>nixos-option</command></refentrytitle>
|
|
<manvolnum>8</manvolnum>
|
|
<refmiscinfo class="source">NixOS</refmiscinfo>
|
|
<!-- <refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo> -->
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname><command>nixos-option</command></refname>
|
|
<refpurpose>inspect a NixOS configuration</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<cmdsynopsis>
|
|
<command>nixos-option</command>
|
|
<group choice="opt">
|
|
<option>-i</option>
|
|
<option>v</option>
|
|
<option>d</option>
|
|
<option>l</option>
|
|
</group>
|
|
<arg choice='plain'><replaceable>option.name</replaceable></arg>
|
|
</cmdsynopsis>
|
|
<cmdsynopsis>
|
|
<command>nixos-option</command>
|
|
<arg choice='plain'><option>--install</option></arg>
|
|
</cmdsynopsis>
|
|
</refsynopsisdiv>
|
|
|
|
|
|
<refsection><title>Description</title>
|
|
|
|
<para>This command evaluates the configuration specified in
|
|
<filename>/etc/nixos/configuration.nix</filename> and returns the properties
|
|
of the option name given as argument. By default, it returns the value of
|
|
the option.</para>
|
|
|
|
<para>When the option name is not an option, the command prints the list of
|
|
attributes in contained in the attribute set. This could used to provide
|
|
completion in some editors.</para>
|
|
|
|
<para>When the option <option>--install</option> (or <option>-i</option>) is
|
|
used with no option name, this command generates a template configuration
|
|
with a scan of the target system. It produces a template configuration
|
|
in <filename>/etc/nixos/configuration.nix</filename>, and a scan of the
|
|
machine in <filename>/etc/nixos/hardware-configuration.nix</filename>. The
|
|
scan of the machine is produced
|
|
by <command>nixos-hardware-scan</command>.</para>
|
|
|
|
</refsection>
|
|
|
|
<refsection><title>Options</title>
|
|
|
|
<para>This command accepts the following options:</para>
|
|
|
|
<variablelist>
|
|
|
|
<varlistentry>
|
|
<term><option>--install</option>, <option>-i</option></term>
|
|
<listitem>
|
|
<para>Use the installation configuration instead of current system
|
|
configuration. Generate a template configuration if no option name is
|
|
specified.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>--value</option>, <option>-v</option></term>
|
|
<listitem>
|
|
<para>Returns the value of the option. This is the default operation
|
|
if no other options are defined.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>--description</option>, <option>-d</option></term>
|
|
<listitem>
|
|
<para>Return the default value, the example and the description of the
|
|
option when available.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><option>--lookup</option>, <option>-l</option></term>
|
|
<listitem>
|
|
<para>Return the locations where the option is declared and where it
|
|
is defined. This is extremely useful to find sources of errors in
|
|
your configuration.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
|
|
</refsection>
|
|
|
|
|
|
<refsection><title>Environment</title>
|
|
|
|
<variablelist>
|
|
|
|
<varlistentry>
|
|
<term><envar>mountPoint</envar></term>
|
|
<listitem>
|
|
<para>Location of the target file system. Defaults to
|
|
<filename>/mnt</filename>. This environment variable is only used in
|
|
combinaison with <option>--install</option> option.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><envar>NIXOS</envar></term>
|
|
<listitem>
|
|
<para>Path to the NixOS source tree. Defaults to
|
|
<filename>/etc/nixos/nixos</filename>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><envar>NIXPKGS</envar></term>
|
|
<listitem>
|
|
<para>Path to the Nixpkgs source tree. Defaults to
|
|
<filename>/etc/nixos/nixpkgs</filename>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><envar>NIXOS_CONFIG</envar></term>
|
|
<listitem>
|
|
<para>Path to the main NixOS configuration module. Defaults to
|
|
<filename>/etc/nixos/configuration.nix</filename>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
|
|
</refsection>
|
|
|
|
|
|
<refsection><title>Examples</title>
|
|
|
|
<para>Investigate option values:
|
|
|
|
<screen>$ nixos-option boot.loader
|
|
This attribute set contains:
|
|
generationsDir
|
|
grub
|
|
initScript
|
|
|
|
$ nixos-option boot.loader.grub.enable
|
|
true</screen></para>
|
|
|
|
<para>Prints option information:
|
|
|
|
<screen>$ nixos-option -d networking.hostName
|
|
Default: "nixos"
|
|
Description:
|
|
The name of the machine. Leave it empty if you want to obtain
|
|
it from a DHCP server (if using DHCP).</screen></para>
|
|
|
|
<para>Find the locations which are declaring and defining an option:
|
|
|
|
<screen>$ nixos-option -l hardware.firmware
|
|
Declared by:
|
|
/mnt/data/nix-sources/nixos/modules/services/hardware/udev.nix
|
|
|
|
Defined by:
|
|
/etc/nixos/nixos/modules/system/boot/kernel.nix
|
|
/etc/nixos/nixos/modules/hardware/network/rt73.nix
|
|
/etc/nixos/nixos/modules/hardware/network/intel-3945abg.nix
|
|
/etc/nixos/nixos/modules/hardware/network/intel-2200bg.nix</screen></para>
|
|
|
|
</refsection>
|
|
|
|
<refsection><title>Bugs</title>
|
|
|
|
<para>The author listed in the following section is wrong. If there is any
|
|
other bug, please report to Nicolas Pierron.</para>
|
|
|
|
</refsection>
|
|
|
|
|
|
</refentry>
|