136 lines
		
	
	
	
		
			4.7 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
			
		
		
	
	
			136 lines
		
	
	
	
		
			4.7 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
<refentry xmlns="http://docbook.org/ns/docbook"
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          xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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  <refname>nix-build</refname>
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  <refpurpose>build a Nix expression</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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  <cmdsynopsis>
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    <command>nix-build</command>
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    <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="opt-common-syn.xml#xpointer(/nop/*)" />
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    <arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
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    <arg>
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      <group choice='req'>
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        <arg choice='plain'><option>--attr</option></arg>
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        <arg choice='plain'><option>-A</option></arg>
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      </group>
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      <replaceable>attrPath</replaceable>
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    </arg>
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    <arg><option>--add-drv-link</option></arg>
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    <arg><option>--drv-link </option><replaceable>drvlink</replaceable></arg>
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    <arg><option>--no-out-link</option></arg>
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    <arg>
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      <group choice='req'>
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        <arg choice='plain'><option>--out-link</option></arg>
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        <arg choice='plain'><option>-o</option></arg>
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      </group>
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      <replaceable>outlink</replaceable>
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    </arg>
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    <arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
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  </cmdsynopsis>
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</refsynopsisdiv>
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<refsection><title>Description</title>
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<para>The <command>nix-build</command> command builds the derivations
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described by the Nix expressions in <replaceable>paths</replaceable>.
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If the build succeeds, it places a symlink to the result in the
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current directory.  The symlink is called <filename>result</filename>.
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If there are multiple Nix expressions, or the Nix expressions evaluate
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to multiple derivations, multiple sequentially numbered symlinks are
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created (<filename>result</filename>, <filename>result-2</filename>,
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and so on).</para>
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<para>If no <replaceable>paths</replaceable> are specified, then
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<command>nix-build</command> will use <filename>default.nix</filename>
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in the current directory, if it exists.</para>
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<para><command>nix-build</command> is essentially a wrapper around
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<link
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linkend="sec-nix-instantiate"><command>nix-instantiate</command></link>
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(to translate a high-level Nix expression to a low-level store
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derivation) and <link
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linkend="rsec-nix-store-realise"><command>nix-store
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--realise</command></link> (to build the store derivation).</para>
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<warning><para>The result of the build is automatically registered as
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a root of the Nix garbage collector.  This root disappears
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automatically when the <filename>result</filename> symlink is deleted
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or renamed.  So don’t rename the symlink.</para></warning>
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</refsection>
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<refsection><title>Options</title>
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<para>See also <xref linkend="sec-common-options" />.  All options not
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listed here are passed to <command>nix-store --realise</command>,
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except for <option>--arg</option> and <option>--attr</option> /
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<option>-A</option> which are passed to
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<command>nix-instantiate</command>.</para>
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<variablelist>
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  <varlistentry><term><option>--add-drv-link</option></term>
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    <listitem><para>Add a symlink in the current directory to the
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    store derivation produced by <command>nix-instantiate</command>.
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    The symlink is called <filename>derivation</filename> (which is
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    numbered in the case of multiple derivations).  The derivation is
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    a root of the garbage collector until the symlink is deleted or
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    renamed.</para></listitem>
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  </varlistentry>
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  <varlistentry><term><option>--drv-link</option> <replaceable>drvlink</replaceable></term>
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    <listitem><para>Change the name of the symlink to the derivation
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    created when <option>--add-drv-link</option> is used from
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    <filename>derivation</filename> to
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    <replaceable>drvlink</replaceable>.</para></listitem>
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  </varlistentry>
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  <varlistentry><term><option>--no-out-link</option></term>
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    <listitem><para>Do not create a symlink to the output path.  Note
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    that as a result the output does not become a root of the garbage
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    collector, and so might be deleted by <command>nix-store
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    --gc</command>.</para></listitem>
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  </varlistentry>
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  <varlistentry xml:id='opt-out-link'><term><option>--out-link</option> /
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  <option>-o</option> <replaceable>outlink</replaceable></term>
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    <listitem><para>Change the name of the symlink to the output path
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    created unless <option>--no-out-link</option> is used from
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    <filename>result</filename> to
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    <replaceable>outlink</replaceable>.</para></listitem>
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  </varlistentry>
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</variablelist>
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</refsection>
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<refsection><title>Examples</title>
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<screen>
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$ nix-build pkgs/top-level/all-packages.nix -A firefox
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store derivation is /nix/store/qybprl8sz2lc...-firefox-1.5.0.7.drv
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/nix/store/d18hyl92g30l...-firefox-1.5.0.7
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$ ls -l result
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lrwxrwxrwx  <replaceable>...</replaceable>  result -> /nix/store/d18hyl92g30l...-firefox-1.5.0.7
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$ ls ./result/bin/
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firefox  firefox-config</screen>
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</refsection>
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</refentry>
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