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-<refentry xmlns="http://docbook.org/ns/docbook"
-      xmlns:xlink="http://www.w3.org/1999/xlink"
-      xmlns:xi="http://www.w3.org/2001/XInclude"
-      version="5.0"
-      xml:id="sec-nix-instantiate">
-
-<refmeta>
-  <refentrytitle>nix-instantiate</refentrytitle>
-  <manvolnum>1</manvolnum>
-  <refmiscinfo class="source">Nix</refmiscinfo>
-  <refmiscinfo class="version"><xi:include href="../version.txt" parse="text"/></refmiscinfo>
-</refmeta>
-
-<refnamediv>
-  <refname>nix-instantiate</refname>
-  <refpurpose>instantiate store derivations from Nix expressions</refpurpose>
-</refnamediv>
-
-<refsynopsisdiv>
-  <cmdsynopsis>
-    <command>nix-instantiate</command>
-    <group>
-      <arg choice='plain'><option>--parse</option></arg>
-      <arg choice='plain'>
-        <option>--eval</option>
-        <arg><option>--strict</option></arg>
-        <arg><option>--json</option></arg>
-        <arg><option>--xml</option></arg>
-      </arg>
-    </group>
-    <arg><option>--read-write-mode</option></arg>
-    <arg><option>--arg</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
-    <arg>
-      <group choice='req'>
-        <arg choice='plain'><option>--attr</option></arg>
-        <arg choice='plain'><option>-A</option></arg>
-      </group>
-      <emphasis>attrPath</emphasis>
-    </arg>
-    <arg><option>--add-root</option> <emphasis>path</emphasis></arg>
-    <arg><option>--indirect</option></arg>
-    <group>
-      <arg choice='plain'><option>--expr</option></arg>
-      <arg choice='plain'><option>-E</option></arg>
-    </group>
-    <arg choice='plain' rep='repeat'><emphasis>files</emphasis></arg>
-  </cmdsynopsis>
-  <cmdsynopsis>
-    <command>nix-instantiate</command>
-    <arg choice='plain'><option>--find-file</option></arg>
-    <arg choice='plain' rep='repeat'><emphasis>files</emphasis></arg>
-  </cmdsynopsis>
-</refsynopsisdiv>
-
-
-<refsection><title>Description</title>
-
-<para>The command <command>nix-instantiate</command> generates <link
-linkend="gloss-derivation">store derivations</link> from (high-level)
-Nix expressions.  It evaluates the Nix expressions in each of
-<emphasis>files</emphasis> (which defaults to
-<emphasis>./default.nix</emphasis>).  Each top-level expression
-should evaluate to a derivation, a list of derivations, or a set of
-derivations.  The paths of the resulting store derivations are printed
-on standard output.</para>
-
-<para>If <emphasis>files</emphasis> is the character
-<literal>-</literal>, then a Nix expression will be read from standard
-input.</para>
-
-<para condition="manual">See also <xref linkend="sec-common-options"
-/> for a list of common options.</para>
-
-</refsection>
-
-
-<refsection><title>Options</title>
-
-<variablelist>
-
-  <varlistentry>
-    <term><option>--add-root</option> <emphasis>path</emphasis></term>
-    <term><option>--indirect</option></term>
-
-    <listitem><para>See the <link linkend="opt-add-root">corresponding
-    options</link> in <command>nix-store</command>.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--parse</option></term>
-
-    <listitem><para>Just parse the input files, and print their
-    abstract syntax trees on standard output in ATerm
-    format.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--eval</option></term>
-
-    <listitem><para>Just parse and evaluate the input files, and print
-    the resulting values on standard output.  No instantiation of
-    store derivations takes place.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--find-file</option></term>
-
-    <listitem><para>Look up the given files in Nix’s search path (as
-    specified by the <literal linkend="env-NIX_PATH">NIX_PATH</literal>
-    environment variable).  If found, print the corresponding absolute
-    paths on standard output.  For instance, if
-    <literal>NIX_PATH</literal> is
-    <literal>nixpkgs=/home/alice/nixpkgs</literal>, then
-    <literal>nix-instantiate --find-file nixpkgs/default.nix</literal>
-    will print
-    <literal>/home/alice/nixpkgs/default.nix</literal>.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--strict</option></term>
-
-    <listitem><para>When used with <option>--eval</option>,
-    recursively evaluate list elements and attributes.  Normally, such
-    sub-expressions are left unevaluated (since the Nix expression
-    language is lazy).</para>
-
-    <warning><para>This option can cause non-termination, because lazy
-    data structures can be infinitely large.</para></warning>
-
-    </listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--json</option></term>
-
-    <listitem><para>When used with <option>--eval</option>, print the resulting
-    value as an JSON representation of the abstract syntax tree rather
-    than as an ATerm.</para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--xml</option></term>
-
-    <listitem><para>When used with <option>--eval</option>, print the resulting
-    value as an XML representation of the abstract syntax tree rather than as
-    an ATerm. The schema is the same as that used by the <link
-    linkend="builtin-toXML"><function>toXML</function> built-in</link>.
-    </para></listitem>
-
-  </varlistentry>
-
-  <varlistentry><term><option>--read-write-mode</option></term>
-
-    <listitem><para>When used with <option>--eval</option>, perform
-    evaluation in read/write mode so nix language features that
-    require it will still work (at the cost of needing to do
-    instantiation of every evaluated derivation). If this option is
-    not enabled, there may be uninstantiated store paths in the final
-    output.</para>
-
-    </listitem>
-
-  </varlistentry>
-
-</variablelist>
-
-<variablelist condition="manpage">
-  <xi:include href="opt-common.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(//db:variablelist[@xml:id='opt-common']/*)" />
-</variablelist>
-
-</refsection>
-
-
-<refsection><title>Examples</title>
-
-<para>Instantiating store derivations from a Nix expression, and
-building them using <command>nix-store</command>:
-
-<screen>
-$ nix-instantiate test.nix <lineannotation>(instantiate)</lineannotation>
-/nix/store/cigxbmvy6dzix98dxxh9b6shg7ar5bvs-perl-BerkeleyDB-0.26.drv
-
-$ nix-store -r $(nix-instantiate test.nix) <lineannotation>(build)</lineannotation>
-<emphasis>...</emphasis>
-/nix/store/qhqk4n8ci095g3sdp93x7rgwyh9rdvgk-perl-BerkeleyDB-0.26 <lineannotation>(output path)</lineannotation>
-
-$ ls -l /nix/store/qhqk4n8ci095g3sdp93x7rgwyh9rdvgk-perl-BerkeleyDB-0.26
-dr-xr-xr-x    2 eelco    users        4096 1970-01-01 01:00 lib
-...</screen>
-
-</para>
-
-<para>You can also give a Nix expression on the command line:
-
-<screen>
-$ nix-instantiate -E 'with import &lt;nixpkgs> { }; hello'
-/nix/store/j8s4zyv75a724q38cb0r87rlczaiag4y-hello-2.8.drv
-</screen>
-
-This is equivalent to:
-
-<screen>
-$ nix-instantiate '&lt;nixpkgs>' -A hello
-</screen>
-
-</para>
-
-<para>Parsing and evaluating Nix expressions:
-
-<screen>
-$ nix-instantiate --parse -E '1 + 2'
-1 + 2
-
-$ nix-instantiate --eval -E '1 + 2'
-3
-
-$ nix-instantiate --eval --xml -E '1 + 2'
-<![CDATA[<?xml version='1.0' encoding='utf-8'?>
-<expr>
-  <int value="3" />
-</expr>]]></screen>
-
-</para>
-
-<para>The difference between non-strict and strict evaluation:
-
-<screen>
-$ nix-instantiate --eval --xml -E 'rec { x = "foo"; y = x; }'
-<emphasis>...</emphasis><![CDATA[
-  <attr name="x">
-    <string value="foo" />
-  </attr>
-  <attr name="y">
-    <unevaluated />
-  </attr>]]>
-<emphasis>...</emphasis></screen>
-
-Note that <varname>y</varname> is left unevaluated (the XML
-representation doesn’t attempt to show non-normal forms).
-
-<screen>
-$ nix-instantiate --eval --xml --strict -E 'rec { x = "foo"; y = x; }'
-<emphasis>...</emphasis><![CDATA[
-  <attr name="x">
-    <string value="foo" />
-  </attr>
-  <attr name="y">
-    <string value="foo" />
-  </attr>]]>
-<emphasis>...</emphasis></screen>
-
-</para>
-
-</refsection>
-
-
-<refsection condition="manpage"><title>Environment variables</title>
-
-<variablelist>
-  <xi:include href="env-common.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(//db:variablelist[@xml:id='env-common']/*)" />
-</variablelist>
-
-</refsection>
-
-
-</refentry>