206 lines
7 KiB
XML
206 lines
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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xmlns:xi="http://www.w3.org/2001/XInclude"
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xml:id="sec-nix-build">
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<refmeta>
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<refentrytitle>nix-build</refentrytitle>
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<manvolnum>1</manvolnum>
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<refmiscinfo class="source">Nix</refmiscinfo>
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<refmiscinfo class="version"><xi:include href="version.txt" parse="text"/></refmiscinfo>
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</refmeta>
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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#xmlns(db=http://docbook.org/ns/docbook)xpointer(/db:nop/*)" />
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<arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
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<arg><option>--argstr</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>--drv-link</option> <replaceable>drvlink</replaceable></arg>
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<arg><option>--add-drv-link</option></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>
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<option>--run-env</option>
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<arg><option>--command</option> <replaceable>cmd</replaceable></arg>
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<arg><option>--exclude</option> <replaceable>regexp</replaceable></arg>
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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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<para>The subcommand <command>nix-build --run-env</command> will build
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the dependencies of the derivation, but not the derivation itself. It
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will then start an interactive shell in which all environment
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variables defined by the derivation have been set to their
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corresponding values. This is useful for reproducing the environment
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of a derivation for development.</para>
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</refsection>
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<refsection><title>Options</title>
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<para>All options not listed here are passed to <command>nix-store
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--realise</command>, except for <option>--arg</option> and
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<option>--attr</option> / <option>-A</option> which are passed to
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<command>nix-instantiate</command>. <phrase condition="manual">See
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also <xref linkend="sec-common-options" />.</phrase></para>
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<variablelist>
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<varlistentry><term><option>--drv-link</option> <replaceable>drvlink</replaceable></term>
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<listitem><para>Add a symlink named
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<replaceable>drvlink</replaceable> to the store derivation
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produced by <command>nix-instantiate</command>. The derivation is
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a root of the garbage collector until the symlink is deleted or
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renamed. If there are multiple derivations, numbers are suffixed
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to <replaceable>drvlink</replaceable> to distinguish between
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them.</para></listitem>
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</varlistentry>
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<varlistentry><term><option>--add-drv-link</option></term>
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<listitem><para>Shorthand for <option>--drv-link</option>
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<filename>./derivation</filename>.</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 from <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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<variablelist condition="manpage">
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<xi:include href="opt-common.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(//db:variablelist[@xml:id='opt-common']/*)" />
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</variablelist>
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<para>The following options apply to <command>nix-build --run-env</command>.</para>
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<variablelist>
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<varlistentry><term><option>--command</option> <replaceable>cmd</replaceable></term>
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<listitem><para>In the environment of the derivation, executeq the
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command <replaceable>cmd</replaceable> instead of the default
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interactive shell.</para></listitem>
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</varlistentry>
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<varlistentry><term><option>--exclude</option> <replaceable>regexp</replaceable></term>
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<listitem><para>Do not build any dependencies whose store path
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matches the regular expression <replaceable>regexp</replaceable>.
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This option may be specified multiple times.</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 '<nixpkgs>' -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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<para>To build the dependencies of the package Pan, and start an
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interactive shell in which to build it:
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<screen>
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$ nix-build '<nixpkgs>' --run-env -A pan
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$ tar xf $src
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$ cd pan-*
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$ ./configure
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$ make
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$ ./pan/gui/pan
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</screen>
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</para>
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</refsection>
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<refsection condition="manpage"><title>Environment variables</title>
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<variablelist>
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<xi:include href="env-common.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(//db:variablelist[@xml:id='env-common']/*)" />
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</variablelist>
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</refsection>
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</refentry>
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