forked from lix-project/lix
* Manual updates.
This commit is contained in:
Eelco Dolstra
parent
ad3121a52d
commit
67eff20906
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@ -107,6 +107,17 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
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</varlistentry>
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<varlistentry><term><envar>TMPDIR</envar></term>
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<listitem><para>Use the specified directory to store temporary
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files. In particular, this includes temporary build directories;
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these can take up substantial amounts of disk space. The default is
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<filename>/tmp</filename>.</para></listitem>
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</varlistentry>
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</variablelist>
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</sect1>
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@ -1,133 +1,150 @@
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<refentry>
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<refnamediv>
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<refname>nix-store</refname>
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<refpurpose>manipulate or query the Nix store</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>nix-store</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 choice='plain'><replaceable>operation</replaceable></arg>
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<arg rep='repeat'><replaceable>options</replaceable></arg>
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<arg rep='repeat'><replaceable>arguments</replaceable></arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refnamediv>
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<refname>nix-store</refname>
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<refpurpose>manipulate or query the Nix store</refpurpose>
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</refnamediv>
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<refsection>
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<title>Description</title>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>nix-store</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>--add-root</option> <replaceable>path</replaceable></arg>
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<arg><option>--indirect</option></arg>
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<arg choice='plain'><replaceable>operation</replaceable></arg>
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<arg rep='repeat'><replaceable>options</replaceable></arg>
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<arg rep='repeat'><replaceable>arguments</replaceable></arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<para>
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The command <command>nix-store</command> performs primitive
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operations on the Nix store. You generally do not need to run
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this command manually.
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</para>
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<para>
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<command>nix-store</command> takes exactly one
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<emphasis>operation</emphasis> flag which indicates the
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subcommand to be performed. These are documented below.
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</para>
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<refsection><title>Description</title>
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</refsection>
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<para>The command <command>nix-store</command> performs primitive
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operations on the Nix store. You generally do not need to run this
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command manually.</para>
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<para><command>nix-store</command> takes exactly one
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<emphasis>operation</emphasis> flag which indicates the subcommand to
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be performed. These are documented below.</para>
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</refsection>
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<!--######################################################################-->
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<!--######################################################################-->
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<refsection>
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<title>Common options</title>
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<refsection><title>Common options</title>
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<para>
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This section lists the options that are common to all
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operations. These options are allowed for every subcommand,
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though they may not always have an effect. See also <xref
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linkend="sec-common-options" />.
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</para>
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<para>This section lists the options that are common to all
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operations. These options are allowed for every subcommand, though
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they may not always have an effect. See also <xref
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linkend="sec-common-options" />.</para>
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</refsection>
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<variablelist>
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<varlistentry><term><option>--add-root</option> <replaceable>path</replaceable></term>
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<listitem><para>Causes the result of a build action
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(<option>--realise</option> and <option>--force-realise</option>)
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to be registered as a root of the garbage collector (see <xref
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linkend="ssec-gc-roots" />). The root is stored in
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<replaceable>path</replaceable>, which must be inside a directory
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that is scanned for roots by the garbage collector (i.e.,
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typically in a subdirectory of
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<filename>/nix/var/nix/gcroots/</filename>)
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<emphasis>unless</emphasis> the <option>--indirect</option> flag
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is used.</para></listitem>
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</varlistentry>
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<varlistentry><term><option>--indirect</option></term>
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<listitem>
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<para>In conjunction with <option>--add-root</option>, this option
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allows roots to be stored <emphasis>outside</emphasis> of the GC
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roots directory. This is useful for commands such as
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<command>nix-build</command> that place a symlink to the build
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result in the current directory; such a build result should not be
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garbage-collected unless the symlink is removed.</para>
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<para>The <option>--indirect</option> flag causes a uniquely named
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symlink to <replaceable>path</replaceable> to be stored in
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<filename>/nix/var/nix/gcroots/auto/</filename>. For instance,
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<screen>
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$ nix-store --add-root /home/eelco/bla/result --indirect -r <replaceable>...</replaceable>
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$ ls -l /nix/var/nix/gcroots/auto
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lrwxrwxrwx 1 ... 2005-03-13 21:10 dn54lcypm8f8... -> /home/eelco/bla/result
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$ ls -l /home/eelco/bla/result
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lrwxrwxrwx 1 ... 2005-03-13 21:10 /home/eelco/bla/result -> /nix/store/1r11343n6qd4...-f-spot-0.0.10</screen>
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Thus, when <filename>/home/eelco/bla/result</filename> is removed,
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the GC root in the <filename>auto</filename> directory becomes a
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dangling symlink and will be ignored by the collector.</para>
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<warning><para>Note that it is not possible to move or rename
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indirect GC roots, since the symlink in the
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<filename>auto</filename> directory will still point to the old
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location.</para></warning>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsection>
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<!--######################################################################-->
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<!--######################################################################-->
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<refsection>
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<title>Environment variables</title>
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<refsection id='rsec-nix-store-realise'><title>Operation
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<option>--realise</option></title>
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<para>
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The following environment variables affect the behaviour of
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<command>nix-store</command>.
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</para>
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<refsection><title>Synopsis</title>
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<variablelist>
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<cmdsynopsis>
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<command>nix-store</command>
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<group choice='req'>
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<arg choice='plain'><option>--realise</option></arg>
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<arg choice='plain'><option>-r</option></arg>
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</group>
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<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
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</cmdsynopsis>
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<varlistentry>
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<term><envar>TMPDIR</envar>=<replaceable>path</replaceable></term>
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<listitem>
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<para>
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Use the directory <replaceable>path</replaceable> to store
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temporary files. In particular, this includes temporary
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build directories; these can take up substantial amounts
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of disk space. The default is <filename>/tmp</filename>.
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</para>
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</listitem>
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</varlistentry>
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</refsection>
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</variablelist>
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<refsection><title>Description</title>
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</refsection>
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<para>The operation <option>--install</option> realises in the file
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system the store expressions stored in
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<replaceable>paths</replaceable>. If these expressions are derivation
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expressions, they are first <emphasis>normalised</emphasis> into a
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closure expression. This may happen in two ways. First, the
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corresponding closure expression (the <emphasis>successor</emphasis>)
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may already known (either because the build has already been
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performed, or because a successor was explicitly registered through
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the <option>--successor</option> operation). Otherwise, the build
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action described by the derivation is performed, and a closure
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expression is computed by scanning the result of the build for
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references to other paths in the store.</para>
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<para>The paths of the closure expression corresponding to each
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expression in <replaceable>paths</replaceable> is printed on standard
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output.</para>
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</refsection>
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</refsection>
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<!--######################################################################-->
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<refsection id='rsec-nix-store-realise'>
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<title>Operation <option>--realise</option></title>
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<refsection>
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<title>Synopsis</title>
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<cmdsynopsis>
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<command>nix-store</command>
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<group choice='req'>
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<arg choice='plain'><option>--realise</option></arg>
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<arg choice='plain'><option>-r</option></arg>
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</group>
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<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
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</cmdsynopsis>
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</refsection>
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<refsection>
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<title>Description</title>
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<para>
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The operation <option>--install</option> realises in the file
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system the store expressions stored in
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<replaceable>paths</replaceable>. If these expressions are
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derivation expressions, they are first
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<emphasis>normalised</emphasis> into a closure expression.
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This may happen in two ways. First, the corresponding closure
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expression (the <emphasis>successor</emphasis>) may already
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known (either because the build has already been performed, or
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because a successor was explicitly registered through the
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<option>--successor</option> operation). Otherwise, the build
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action described by the derivation is performed, and a closure
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expression is computed by scanning the result of the build for
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references to other paths in the store.
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</para>
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<para>
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The paths of the closure expression corresponding to each
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expression in <replaceable>paths</replaceable> is printed on
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standard output.
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</para>
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</refsection>
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</refsection>
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<!--######################################################################-->
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<!--######################################################################-->
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<refsection>
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<title>Operation <option>--gc</option></title>
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@ -19,5 +19,6 @@
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<arg><option>-K</option></arg>
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<arg><option>--fallback</option></arg>
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<arg><option>--readonly-mode</option></arg>
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<arg><option>--log-type</option> <replaceable>type</replaceable></arg>
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</nop>
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@ -379,7 +379,7 @@ $ nix-collect-garbage --print-dead</screen>
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Likewise, the option <option>--print-live</option> will show the paths
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that <emphasis>won’t</emphasis> be deleted.</para>
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<sect2><title>Garbage collector roots</title>
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<sect2 id="ssec-gc-roots"><title>Garbage collector roots</title>
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<para>TODO</para>
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@ -154,7 +154,7 @@ a:hover { background: #ffffcd; }
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Special elements:
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***************************************************************************/
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tt
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tt, code
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{
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color: #400000;
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}
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