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<replaceable> -> <emphasis>

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Pandoc doesn't know <replaceable> so let's force it to be rendered as
italics.
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Eelco Dolstra 2020-07-23 14:28:05 +02:00
parent ee05108472
commit 802150f987
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4
doc/manual/advanced-topics/distributed-builds.xml
View file

@ -86,7 +86,7 @@ To leave a field at its default, set it to <literal>-</literal>.
<orderedlist> <orderedlist>
<listitem><para>The URI of the remote store in the format <listitem><para>The URI of the remote store in the format
<literal>ssh://[<replaceable>username</replaceable>@]<replaceable>hostname</replaceable></literal>, <literal>ssh://[<emphasis>username</emphasis>@]<emphasis>hostname</emphasis></literal>,
e.g. <literal>ssh://nix@mac</literal> or e.g. <literal>ssh://nix@mac</literal> or
<literal>ssh://mac</literal>. For backward compatibility, <literal>ssh://mac</literal>. For backward compatibility,
<literal>ssh://</literal> may be omitted. The hostname may be an <literal>ssh://</literal> may be omitted. The hostname may be an
@ -171,7 +171,7 @@ builders = ssh://mac x86_64-darwin ; ssh://beastie x86_64-freebsd
Finally, remote builders can be configured in a separate configuration Finally, remote builders can be configured in a separate configuration
file included in <option>builders</option> via the syntax file included in <option>builders</option> via the syntax
<literal>@<replaceable>file</replaceable></literal>. For example, <literal>@<emphasis>file</emphasis></literal>. For example,
<programlisting> <programlisting>
builders = @/etc/nix/machines builders = @/etc/nix/machines

34
doc/manual/command-ref/conf-file.xml
View file

@ -26,7 +26,7 @@
<listitem> <listitem>
<para> <para>
The system-wide configuration file The system-wide configuration file
<filename><replaceable>sysconfdir</replaceable>/nix/nix.conf</filename> <filename><emphasis>sysconfdir</emphasis>/nix/nix.conf</filename>
(i.e. <filename>/etc/nix/nix.conf</filename> on most systems), (i.e. <filename>/etc/nix/nix.conf</filename> on most systems),
or <filename>$NIX_CONF_DIR/nix.conf</filename> if or <filename>$NIX_CONF_DIR/nix.conf</filename> if
<literal>NIX_CONF_DIR</literal> is set. Values loaded in this <literal>NIX_CONF_DIR</literal> is set. Values loaded in this
@ -52,11 +52,11 @@
</itemizedlist> </itemizedlist>
<para>The configuration files consist of <para>The configuration files consist of
<literal><replaceable>name</replaceable> = <literal><emphasis>name</emphasis> =
<replaceable>value</replaceable></literal> pairs, one per line. Other <emphasis>value</emphasis></literal> pairs, one per line. Other
files can be included with a line like <literal>include files can be included with a line like <literal>include
<replaceable>path</replaceable></literal>, where <emphasis>path</emphasis></literal>, where
<replaceable>path</replaceable> is interpreted relative to the current <emphasis>path</emphasis> is interpreted relative to the current
conf file and a missing file is an error unless conf file and a missing file is an error unless
<literal>!include</literal> is used instead. <literal>!include</literal> is used instead.
Comments start with a <literal>#</literal> character. Here is an Comments start with a <literal>#</literal> character. Here is an
@ -244,7 +244,7 @@ false</literal>.</para>
instance, in Nixpkgs, if the derivation attribute instance, in Nixpkgs, if the derivation attribute
<varname>enableParallelBuilding</varname> is set to <varname>enableParallelBuilding</varname> is set to
<literal>true</literal>, the builder passes the <literal>true</literal>, the builder passes the
<option>-j<replaceable>N</replaceable></option> flag to GNU Make. <option>-j<emphasis>N</emphasis></option> flag to GNU Make.
It can be overridden using the <option It can be overridden using the <option
linkend='opt-cores'>--cores</option> command line switch and linkend='opt-cores'>--cores</option> command line switch and
defaults to <literal>1</literal>. The value <literal>0</literal> defaults to <literal>1</literal>. The value <literal>0</literal>
@ -383,10 +383,10 @@ false</literal>.</para>
<function>builtins.fetchurl</function> to obtain files by <function>builtins.fetchurl</function> to obtain files by
hash. The default is hash. The default is
<literal>http://tarballs.nixos.org/</literal>. Given a hash type <literal>http://tarballs.nixos.org/</literal>. Given a hash type
<replaceable>ht</replaceable> and a base-16 hash <emphasis>ht</emphasis> and a base-16 hash
<replaceable>h</replaceable>, Nix will try to download the file <emphasis>h</emphasis>, Nix will try to download the file
from from
<literal>hashed-mirror/<replaceable>ht</replaceable>/<replaceable>h</replaceable></literal>. <literal>hashed-mirror/<emphasis>ht</emphasis>/<emphasis>h</emphasis></literal>.
This allows files to be downloaded even if they have disappeared This allows files to be downloaded even if they have disappeared
from their original URI. For example, given the default mirror from their original URI. For example, given the default mirror
<literal>http://tarballs.nixos.org/</literal>, when building the derivation <literal>http://tarballs.nixos.org/</literal>, when building the derivation
@ -421,7 +421,7 @@ builtins.fetchurl {
output and error of its builder) to the directory output and error of its builder) to the directory
<filename>/nix/var/log/nix/drvs</filename>. The build log can be <filename>/nix/var/log/nix/drvs</filename>. The build log can be
retrieved using the command <command>nix-store -l retrieved using the command <command>nix-store -l
<replaceable>path</replaceable></command>.</para></listitem> <emphasis>path</emphasis></command>.</para></listitem>
</varlistentry> </varlistentry>
@ -592,9 +592,9 @@ builtins.fetchurl {
accounts in the following format: accounts in the following format:
<screen> <screen>
machine <replaceable>my-machine</replaceable> machine <emphasis>my-machine</emphasis>
login <replaceable>my-username</replaceable> login <emphasis>my-username</emphasis>
password <replaceable>my-password</replaceable> password <emphasis>my-password</emphasis>
</screen> </screen>
For the exact syntax, see <link For the exact syntax, see <link
@ -837,13 +837,13 @@ password <replaceable>my-password</replaceable>
<listitem><para>A list of paths bind-mounted into Nix sandbox <listitem><para>A list of paths bind-mounted into Nix sandbox
environments. You can use the syntax environments. You can use the syntax
<literal><replaceable>target</replaceable>=<replaceable>source</replaceable></literal> <literal><emphasis>target</emphasis>=<emphasis>source</emphasis></literal>
to mount a path in a different location in the sandbox; for to mount a path in a different location in the sandbox; for
instance, <literal>/bin=/nix-bin</literal> will mount the path instance, <literal>/bin=/nix-bin</literal> will mount the path
<literal>/nix-bin</literal> as <literal>/bin</literal> inside the <literal>/nix-bin</literal> as <literal>/bin</literal> inside the
sandbox. If <replaceable>source</replaceable> is followed by sandbox. If <emphasis>source</emphasis> is followed by
<literal>?</literal>, then it is not an error if <literal>?</literal>, then it is not an error if
<replaceable>source</replaceable> does not exist; for example, <emphasis>source</emphasis> does not exist; for example,
<literal>/dev/nvidiactl?</literal> specifies that <literal>/dev/nvidiactl?</literal> specifies that
<filename>/dev/nvidiactl</filename> will only be mounted in the <filename>/dev/nvidiactl</filename> will only be mounted in the
sandbox if it exists in the host filesystem.</para> sandbox if it exists in the host filesystem.</para>
@ -1035,7 +1035,7 @@ function-trace exited /nix/store/.../example.nix:226:41 at 1565795253249941684
<listitem><para>A list of URLs of substituters, separated by <listitem><para>A list of URLs of substituters, separated by
whitespace. These are not used by default, but can be enabled by whitespace. These are not used by default, but can be enabled by
users of the Nix daemon by specifying <literal>--option users of the Nix daemon by specifying <literal>--option
substituters <replaceable>urls</replaceable></literal> on the substituters <emphasis>urls</emphasis></literal> on the
command line. Unprivileged users are only allowed to pass a command line. Unprivileged users are only allowed to pass a
subset of the URLs listed in <literal>substituters</literal> and subset of the URLs listed in <literal>substituters</literal> and
<literal>trusted-substituters</literal>.</para></listitem> <literal>trusted-substituters</literal>.</para></listitem>

18
doc/manual/command-ref/env-common.xml
View file

@ -25,7 +25,7 @@
<para>A colon-separated list of directories used to look up Nix <para>A colon-separated list of directories used to look up Nix
expressions enclosed in angle brackets (i.e., expressions enclosed in angle brackets (i.e.,
<literal>&lt;<replaceable>path</replaceable>></literal>). For <literal>&lt;<emphasis>path</emphasis>></literal>). For
instance, the value instance, the value
<screen> <screen>
@ -40,10 +40,10 @@
nixpkgs=/home/eelco/Dev/nixpkgs-branch:/etc/nixos</screen> nixpkgs=/home/eelco/Dev/nixpkgs-branch:/etc/nixos</screen>
will cause Nix to search for will cause Nix to search for
<literal>&lt;nixpkgs/<replaceable>path</replaceable>></literal> in <literal>&lt;nixpkgs/<emphasis>path</emphasis>></literal> in
<filename>/home/eelco/Dev/nixpkgs-branch/<replaceable>path</replaceable></filename> <filename>/home/eelco/Dev/nixpkgs-branch/<emphasis>path</emphasis></filename>
and and
<filename>/etc/nixos/nixpkgs/<replaceable>path</replaceable></filename>.</para> <filename>/etc/nixos/nixpkgs/<emphasis>path</emphasis></filename>.</para>
<para>If a path in the Nix search path starts with <para>If a path in the Nix search path starts with
<literal>http://</literal> or <literal>https://</literal>, it is <literal>http://</literal> or <literal>https://</literal>, it is
@ -105,7 +105,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
<varlistentry><term><literal>NIX_STORE_DIR</literal></term> <varlistentry><term><literal>NIX_STORE_DIR</literal></term>
<listitem><para>Overrides the location of the Nix store (default <listitem><para>Overrides the location of the Nix store (default
<filename><replaceable>prefix</replaceable>/store</filename>).</para></listitem> <filename><emphasis>prefix</emphasis>/store</filename>).</para></listitem>
</varlistentry> </varlistentry>
@ -114,7 +114,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
<listitem><para>Overrides the location of the Nix static data <listitem><para>Overrides the location of the Nix static data
directory (default directory (default
<filename><replaceable>prefix</replaceable>/share</filename>).</para></listitem> <filename><emphasis>prefix</emphasis>/share</filename>).</para></listitem>
</varlistentry> </varlistentry>
@ -122,7 +122,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
<varlistentry><term><literal>NIX_LOG_DIR</literal></term> <varlistentry><term><literal>NIX_LOG_DIR</literal></term>
<listitem><para>Overrides the location of the Nix log directory <listitem><para>Overrides the location of the Nix log directory
(default <filename><replaceable>prefix</replaceable>/var/log/nix</filename>).</para></listitem> (default <filename><emphasis>prefix</emphasis>/var/log/nix</filename>).</para></listitem>
</varlistentry> </varlistentry>
@ -130,7 +130,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
<varlistentry><term><literal>NIX_STATE_DIR</literal></term> <varlistentry><term><literal>NIX_STATE_DIR</literal></term>
<listitem><para>Overrides the location of the Nix state directory <listitem><para>Overrides the location of the Nix state directory
(default <filename><replaceable>prefix</replaceable>/var/nix</filename>).</para></listitem> (default <filename><emphasis>prefix</emphasis>/var/nix</filename>).</para></listitem>
</varlistentry> </varlistentry>
@ -139,7 +139,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
<listitem><para>Overrides the location of the system Nix configuration <listitem><para>Overrides the location of the system Nix configuration
directory (default directory (default
<filename><replaceable>prefix</replaceable>/etc/nix</filename>).</para></listitem> <filename><emphasis>prefix</emphasis>/etc/nix</filename>).</para></listitem>
</varlistentry> </varlistentry>

24
doc/manual/command-ref/nix-build.xml
View file

@ -20,14 +20,14 @@
<cmdsynopsis> <cmdsynopsis>
<command>nix-build</command> <command>nix-build</command>
<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/*)" /> <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/*)" />
<arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg> <arg><option>--arg</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg> <arg><option>--argstr</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg> <arg>
<group choice='req'> <group choice='req'>
<arg choice='plain'><option>--attr</option></arg> <arg choice='plain'><option>--attr</option></arg>
<arg choice='plain'><option>-A</option></arg> <arg choice='plain'><option>-A</option></arg>
</group> </group>
<replaceable>attrPath</replaceable> <emphasis>attrPath</emphasis>
</arg> </arg>
<arg><option>--no-out-link</option></arg> <arg><option>--no-out-link</option></arg>
<arg><option>--dry-run</option></arg> <arg><option>--dry-run</option></arg>
@ -36,16 +36,16 @@
<arg choice='plain'><option>--out-link</option></arg> <arg choice='plain'><option>--out-link</option></arg>
<arg choice='plain'><option>-o</option></arg> <arg choice='plain'><option>-o</option></arg>
</group> </group>
<replaceable>outlink</replaceable> <emphasis>outlink</emphasis>
</arg> </arg>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsynopsisdiv> </refsynopsisdiv>
<refsection><title>Description</title> <refsection><title>Description</title>
<para>The <command>nix-build</command> command builds the derivations <para>The <command>nix-build</command> command builds the derivations
described by the Nix expressions in <replaceable>paths</replaceable>. described by the Nix expressions in <emphasis>paths</emphasis>.
If the build succeeds, it places a symlink to the result in the If the build succeeds, it places a symlink to the result in the
current directory. The symlink is called <filename>result</filename>. current directory. The symlink is called <filename>result</filename>.
If there are multiple Nix expressions, or the Nix expressions evaluate If there are multiple Nix expressions, or the Nix expressions evaluate
@ -53,11 +53,11 @@ to multiple derivations, multiple sequentially numbered symlinks are
created (<filename>result</filename>, <filename>result-2</filename>, created (<filename>result</filename>, <filename>result-2</filename>,
and so on).</para> and so on).</para>
<para>If no <replaceable>paths</replaceable> are specified, then <para>If no <emphasis>paths</emphasis> are specified, then
<command>nix-build</command> will use <filename>default.nix</filename> <command>nix-build</command> will use <filename>default.nix</filename>
in the current directory, if it exists.</para> in the current directory, if it exists.</para>
<para>If an element of <replaceable>paths</replaceable> starts with <para>If an element of <emphasis>paths</emphasis> starts with
<literal>http://</literal> or <literal>https://</literal>, it is <literal>http://</literal> or <literal>https://</literal>, it is
interpreted as the URL of a tarball that will be downloaded and interpreted as the URL of a tarball that will be downloaded and
unpacked to a temporary location. The tarball must include a single unpacked to a temporary location. The tarball must include a single
@ -104,11 +104,11 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</varlistentry> </varlistentry>
<varlistentry xml:id='opt-out-link'><term><option>--out-link</option> / <varlistentry xml:id='opt-out-link'><term><option>--out-link</option> /
<option>-o</option> <replaceable>outlink</replaceable></term> <option>-o</option> <emphasis>outlink</emphasis></term>
<listitem><para>Change the name of the symlink to the output path <listitem><para>Change the name of the symlink to the output path
created from <filename>result</filename> to created from <filename>result</filename> to
<replaceable>outlink</replaceable>.</para></listitem> <emphasis>outlink</emphasis>.</para></listitem>
</varlistentry> </varlistentry>
@ -131,7 +131,7 @@ store derivation is /nix/store/qybprl8sz2lc...-firefox-1.5.0.7.drv
/nix/store/d18hyl92g30l...-firefox-1.5.0.7 /nix/store/d18hyl92g30l...-firefox-1.5.0.7
$ ls -l result $ ls -l result
lrwxrwxrwx <replaceable>...</replaceable> result -> /nix/store/d18hyl92g30l...-firefox-1.5.0.7 lrwxrwxrwx <emphasis>...</emphasis> result -> /nix/store/d18hyl92g30l...-firefox-1.5.0.7
$ ls ./result/bin/ $ ls ./result/bin/
firefox firefox-config</screen> firefox firefox-config</screen>
@ -143,7 +143,7 @@ You can also build all outputs:
$ nix-build '&lt;nixpkgs>' -A openssl.all $ nix-build '&lt;nixpkgs>' -A openssl.all
</screen> </screen>
This will create a symlink for each output named This will create a symlink for each output named
<filename>result-<replaceable>outputname</replaceable></filename>. <filename>result-<emphasis>outputname</emphasis></filename>.
The suffix is omitted if the output name is <literal>out</literal>. The suffix is omitted if the output name is <literal>out</literal>.
So if <literal>openssl</literal> has outputs <literal>out</literal>, So if <literal>openssl</literal> has outputs <literal>out</literal>,
<literal>bin</literal> and <literal>man</literal>, <literal>bin</literal> and <literal>man</literal>,

32
doc/manual/command-ref/nix-channel.xml
View file

@ -20,11 +20,11 @@
<cmdsynopsis> <cmdsynopsis>
<command>nix-channel</command> <command>nix-channel</command>
<group choice='req'> <group choice='req'>
<arg choice='plain'><option>--add</option> <replaceable>url</replaceable> <arg choice='opt'><replaceable>name</replaceable></arg></arg> <arg choice='plain'><option>--add</option> <emphasis>url</emphasis> <arg choice='opt'><emphasis>name</emphasis></arg></arg>
<arg choice='plain'><option>--remove</option> <replaceable>name</replaceable></arg> <arg choice='plain'><option>--remove</option> <emphasis>name</emphasis></arg>
<arg choice='plain'><option>--list</option></arg> <arg choice='plain'><option>--list</option></arg>
<arg choice='plain'><option>--update</option> <arg rep='repeat'><replaceable>names</replaceable></arg></arg> <arg choice='plain'><option>--update</option> <arg rep='repeat'><emphasis>names</emphasis></arg></arg>
<arg choice='plain'><option>--rollback</option> <arg choice='opt'><replaceable>generation</replaceable></arg></arg> <arg choice='plain'><option>--rollback</option> <arg choice='opt'><emphasis>generation</emphasis></arg></arg>
</group> </group>
</cmdsynopsis> </cmdsynopsis>
</refsynopsisdiv> </refsynopsisdiv>
@ -44,22 +44,22 @@ xlink:href="https://nixos.org/channels" />.</para>
<variablelist> <variablelist>
<varlistentry><term><option>--add</option> <replaceable>url</replaceable> [<replaceable>name</replaceable>]</term> <varlistentry><term><option>--add</option> <emphasis>url</emphasis> [<emphasis>name</emphasis>]</term>
<listitem><para>Adds a channel named <listitem><para>Adds a channel named
<replaceable>name</replaceable> with URL <emphasis>name</emphasis> with URL
<replaceable>url</replaceable> to the list of subscribed channels. <emphasis>url</emphasis> to the list of subscribed channels.
If <replaceable>name</replaceable> is omitted, it defaults to the If <emphasis>name</emphasis> is omitted, it defaults to the
last component of <replaceable>url</replaceable>, with the last component of <emphasis>url</emphasis>, with the
suffixes <literal>-stable</literal> or suffixes <literal>-stable</literal> or
<literal>-unstable</literal> removed.</para></listitem> <literal>-unstable</literal> removed.</para></listitem>
</varlistentry> </varlistentry>
<varlistentry><term><option>--remove</option> <replaceable>name</replaceable></term> <varlistentry><term><option>--remove</option> <emphasis>name</emphasis></term>
<listitem><para>Removes the channel named <listitem><para>Removes the channel named
<replaceable>name</replaceable> from the list of subscribed <emphasis>name</emphasis> from the list of subscribed
channels.</para></listitem> channels.</para></listitem>
</varlistentry> </varlistentry>
@ -71,18 +71,18 @@ xlink:href="https://nixos.org/channels" />.</para>
</varlistentry> </varlistentry>
<varlistentry><term><option>--update</option> [<replaceable>names</replaceable>…]</term> <varlistentry><term><option>--update</option> [<emphasis>names</emphasis>…]</term>
<listitem><para>Downloads the Nix expressions of all subscribed <listitem><para>Downloads the Nix expressions of all subscribed
channels (or only those included in channels (or only those included in
<replaceable>names</replaceable> if specified) and makes them the <emphasis>names</emphasis> if specified) and makes them the
default for <command>nix-env</command> operations (by symlinking default for <command>nix-env</command> operations (by symlinking
them from the directory them from the directory
<filename>~/.nix-defexpr</filename>).</para></listitem> <filename>~/.nix-defexpr</filename>).</para></listitem>
</varlistentry> </varlistentry>
<varlistentry><term><option>--rollback</option> [<replaceable>generation</replaceable>]</term> <varlistentry><term><option>--rollback</option> [<emphasis>generation</emphasis>]</term>
<listitem><para>Reverts the previous call to <command>nix-channel <listitem><para>Reverts the previous call to <command>nix-channel
--update</command>. Optionally, you can specify a specific channel --update</command>. Optionally, you can specify a specific channel
@ -130,7 +130,7 @@ $ nix-instantiate --eval -E '(import &lt;nixpkgs> {}).lib.version'
<variablelist> <variablelist>
<varlistentry><term><filename>/nix/var/nix/profiles/per-user/<replaceable>username</replaceable>/channels</filename></term> <varlistentry><term><filename>/nix/var/nix/profiles/per-user/<emphasis>username</emphasis>/channels</filename></term>
<listitem><para><command>nix-channel</command> uses a <listitem><para><command>nix-channel</command> uses a
<command>nix-env</command> profile to keep track of previous <command>nix-env</command> profile to keep track of previous
@ -145,7 +145,7 @@ $ nix-instantiate --eval -E '(import &lt;nixpkgs> {}).lib.version'
<varlistentry><term><filename>~/.nix-defexpr/channels</filename></term> <varlistentry><term><filename>~/.nix-defexpr/channels</filename></term>
<listitem><para>This is a symlink to <listitem><para>This is a symlink to
<filename>/nix/var/nix/profiles/per-user/<replaceable>username</replaceable>/channels</filename>. It <filename>/nix/var/nix/profiles/per-user/<emphasis>username</emphasis>/channels</filename>. It
ensures that <command>nix-env</command> can find your channels. In ensures that <command>nix-env</command> can find your channels. In
a multi-user installation, you may also have a multi-user installation, you may also have
<filename>~/.nix-defexpr/channels_root</filename>, which links to <filename>~/.nix-defexpr/channels_root</filename>, which links to

6
doc/manual/command-ref/nix-collect-garbage.xml
View file

@ -21,8 +21,8 @@
<command>nix-collect-garbage</command> <command>nix-collect-garbage</command>
<arg><option>--delete-old</option></arg> <arg><option>--delete-old</option></arg>
<arg><option>-d</option></arg> <arg><option>-d</option></arg>
<arg><option>--delete-older-than</option> <replaceable>period</replaceable></arg> <arg><option>--delete-older-than</option> <emphasis>period</emphasis></arg>
<arg><option>--max-freed</option> <replaceable>bytes</replaceable></arg> <arg><option>--max-freed</option> <emphasis>bytes</emphasis></arg>
<arg><option>--dry-run</option></arg> <arg><option>--dry-run</option></arg>
</cmdsynopsis> </cmdsynopsis>
</refsynopsisdiv> </refsynopsisdiv>
@ -39,7 +39,7 @@ which deletes all old generations of all profiles in
<literal>nix-env --delete-generations old</literal> on all profiles <literal>nix-env --delete-generations old</literal> on all profiles
(of course, this makes rollbacks to previous configurations (of course, this makes rollbacks to previous configurations
impossible); and impossible); and
<option>--delete-older-than</option> <replaceable>period</replaceable>, <option>--delete-older-than</option> <emphasis>period</emphasis>,
where period is a value such as <literal>30d</literal>, which deletes where period is a value such as <literal>30d</literal>, which deletes
all generations older than the specified number of days in all profiles all generations older than the specified number of days in all profiles
in <filename>/nix/var/nix/profiles</filename> (except for the generations in <filename>/nix/var/nix/profiles</filename> (except for the generations

16
doc/manual/command-ref/nix-copy-closure.xml
View file

@ -33,9 +33,9 @@
</group> </group>
<arg><option>-v</option></arg> <arg><option>-v</option></arg>
<arg choice='plain'> <arg choice='plain'>
<replaceable>user@</replaceable><replaceable>machine</replaceable> <emphasis>user@</emphasis><emphasis>machine</emphasis>
</arg> </arg>
<arg choice='plain'><replaceable>paths</replaceable></arg> <arg choice='plain'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsynopsisdiv> </refsynopsisdiv>
@ -44,13 +44,13 @@
<para><command>nix-copy-closure</command> gives you an easy and <para><command>nix-copy-closure</command> gives you an easy and
efficient way to exchange software between machines. Given one or efficient way to exchange software between machines. Given one or
more Nix store <replaceable>paths</replaceable> on the local more Nix store <emphasis>paths</emphasis> on the local
machine, <command>nix-copy-closure</command> computes the closure of machine, <command>nix-copy-closure</command> computes the closure of
those paths (i.e. all their dependencies in the Nix store), and copies those paths (i.e. all their dependencies in the Nix store), and copies
all paths in the closure to the remote machine via the all paths in the closure to the remote machine via the
<command>ssh</command> (Secure Shell) command. With the <command>ssh</command> (Secure Shell) command. With the
<option>--from</option>, the direction is reversed: <option>--from</option>, the direction is reversed:
the closure of <replaceable>paths</replaceable> on a remote machine is the closure of <emphasis>paths</emphasis> on a remote machine is
copied to the Nix store on the local machine.</para> copied to the Nix store on the local machine.</para>
<para>This command is efficient because it only sends the store paths <para>This command is efficient because it only sends the store paths
@ -73,8 +73,8 @@ those paths. If this bothers you, use
<varlistentry><term><option>--to</option></term> <varlistentry><term><option>--to</option></term>
<listitem><para>Copy the closure of <listitem><para>Copy the closure of
<replaceable>paths</replaceable> from the local Nix store to the <emphasis>paths</emphasis> from the local Nix store to the
Nix store on <replaceable>machine</replaceable>. This is the Nix store on <emphasis>machine</emphasis>. This is the
default.</para></listitem> default.</para></listitem>
</varlistentry> </varlistentry>
@ -82,8 +82,8 @@ those paths. If this bothers you, use
<varlistentry><term><option>--from</option></term> <varlistentry><term><option>--from</option></term>
<listitem><para>Copy the closure of <listitem><para>Copy the closure of
<replaceable>paths</replaceable> from the Nix store on <emphasis>paths</emphasis> from the Nix store on
<replaceable>machine</replaceable> to the local Nix <emphasis>machine</emphasis> to the local Nix
store.</para></listitem> store.</para></listitem>
</varlistentry> </varlistentry>

120
doc/manual/command-ref/nix-env.xml
View file

@ -20,30 +20,30 @@
<cmdsynopsis> <cmdsynopsis>
<command>nix-env</command> <command>nix-env</command>
<xi:include href="opt-common-syn.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(/db:nop/*)" /> <xi:include href="opt-common-syn.xml#xmlns(db=http://docbook.org/ns/docbook)xpointer(/db:nop/*)" />
<arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg> <arg><option>--arg</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg> <arg><option>--argstr</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg> <arg>
<group choice='req'> <group choice='req'>
<arg choice='plain'><option>--file</option></arg> <arg choice='plain'><option>--file</option></arg>
<arg choice='plain'><option>-f</option></arg> <arg choice='plain'><option>-f</option></arg>
</group> </group>
<replaceable>path</replaceable> <emphasis>path</emphasis>
</arg> </arg>
<arg> <arg>
<group choice='req'> <group choice='req'>
<arg choice='plain'><option>--profile</option></arg> <arg choice='plain'><option>--profile</option></arg>
<arg choice='plain'><option>-p</option></arg> <arg choice='plain'><option>-p</option></arg>
</group> </group>
<replaceable>path</replaceable> <emphasis>path</emphasis>
</arg> </arg>
<arg> <arg>
<arg choice='plain'><option>--system-filter</option></arg> <arg choice='plain'><option>--system-filter</option></arg>
<replaceable>system</replaceable> <emphasis>system</emphasis>
</arg> </arg>
<arg><option>--dry-run</option></arg> <arg><option>--dry-run</option></arg>
<arg choice='plain'><replaceable>operation</replaceable></arg> <arg choice='plain'><emphasis>operation</emphasis></arg>
<arg rep='repeat'><replaceable>options</replaceable></arg> <arg rep='repeat'><emphasis>options</emphasis></arg>
<arg rep='repeat'><replaceable>arguments</replaceable></arg> <arg rep='repeat'><emphasis>arguments</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsynopsisdiv> </refsynopsisdiv>
@ -146,7 +146,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
<variablelist> <variablelist>
<varlistentry><term><option>--file</option> / <option>-f</option> <replaceable>path</replaceable></term> <varlistentry><term><option>--file</option> / <option>-f</option> <emphasis>path</emphasis></term>
<listitem><para>Specifies the Nix expression (designated below as <listitem><para>Specifies the Nix expression (designated below as
the <emphasis>active Nix expression</emphasis>) used by the the <emphasis>active Nix expression</emphasis>) used by the
@ -165,7 +165,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</varlistentry> </varlistentry>
<varlistentry><term><option>--profile</option> / <option>-p</option> <replaceable>path</replaceable></term> <varlistentry><term><option>--profile</option> / <option>-p</option> <emphasis>path</emphasis></term>
<listitem><para>Specifies the profile to be used by those <listitem><para>Specifies the profile to be used by those
operations that operate on a profile (designated below as the operations that operate on a profile (designated below as the
@ -194,12 +194,12 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</varlistentry> </varlistentry>
<varlistentry><term><option>--system-filter</option> <replaceable>system</replaceable></term> <varlistentry><term><option>--system-filter</option> <emphasis>system</emphasis></term>
<listitem><para>By default, operations such as <option>--query <listitem><para>By default, operations such as <option>--query
--available</option> show derivations matching any platform. This --available</option> show derivations matching any platform. This
option allows you to use derivations for the specified platform option allows you to use derivations for the specified platform
<replaceable>system</replaceable>.</para></listitem> <emphasis>system</emphasis>.</para></listitem>
</varlistentry> </varlistentry>
@ -276,7 +276,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
<listitem><para>A symbolic link to the user's current profile. By <listitem><para>A symbolic link to the user's current profile. By
default, this symlink points to default, this symlink points to
<filename><replaceable>prefix</replaceable>/var/nix/profiles/default</filename>. <filename><emphasis>prefix</emphasis>/var/nix/profiles/default</filename>.
The <literal>PATH</literal> environment variable should include The <literal>PATH</literal> environment variable should include
<filename>~/.nix-profile/bin</filename> for the user environment <filename>~/.nix-profile/bin</filename> for the user environment
to be visible to the user.</para></listitem> to be visible to the user.</para></listitem>
@ -310,7 +310,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
<arg choice='plain'><option>--remove-all</option></arg> <arg choice='plain'><option>--remove-all</option></arg>
<arg choice='plain'><option>-r</option></arg> <arg choice='plain'><option>-r</option></arg>
</group> </group>
<arg choice='plain' rep='repeat'><replaceable>args</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>args</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -320,13 +320,13 @@ also <xref linkend="sec-common-options" />.</phrase></para>
<para>The install operation creates a new user environment, based on <para>The install operation creates a new user environment, based on
the current generation of the active profile, to which a set of store the current generation of the active profile, to which a set of store
paths described by <replaceable>args</replaceable> is added. The paths described by <emphasis>args</emphasis> is added. The
arguments <replaceable>args</replaceable> map to store paths in a arguments <emphasis>args</emphasis> map to store paths in a
number of possible ways: number of possible ways:
<itemizedlist> <itemizedlist>
<listitem><para>By default, <replaceable>args</replaceable> is a set <listitem><para>By default, <emphasis>args</emphasis> is a set
of derivation names denoting derivations in the active Nix of derivation names denoting derivations in the active Nix
expression. These are realised, and the resulting output paths are expression. These are realised, and the resulting output paths are
installed. Currently installed derivations with a name equal to the installed. Currently installed derivations with a name equal to the
@ -335,7 +335,7 @@ number of possible ways:
specified.</para> specified.</para>
<para>If there are multiple derivations matching a name in <para>If there are multiple derivations matching a name in
<replaceable>args</replaceable> that have the same name (e.g., <emphasis>args</emphasis> that have the same name (e.g.,
<literal>gcc-3.3.6</literal> and <literal>gcc-4.1.1</literal>), then <literal>gcc-3.3.6</literal> and <literal>gcc-4.1.1</literal>), then
the derivation with the highest <emphasis>priority</emphasis> is the derivation with the highest <emphasis>priority</emphasis> is
used. A derivation can define a priority by declaring the used. A derivation can define a priority by declaring the
@ -362,14 +362,14 @@ number of possible ways:
packages, use <literal>nix-env -qaP</literal>.</para></listitem> packages, use <literal>nix-env -qaP</literal>.</para></listitem>
<listitem><para>If <option>--from-profile</option> <listitem><para>If <option>--from-profile</option>
<replaceable>path</replaceable> is given, <emphasis>path</emphasis> is given,
<replaceable>args</replaceable> is a set of names denoting installed <emphasis>args</emphasis> is a set of names denoting installed
store paths in the profile <replaceable>path</replaceable>. This is store paths in the profile <emphasis>path</emphasis>. This is
an easy way to copy user environment elements from one profile to an easy way to copy user environment elements from one profile to
another.</para></listitem> another.</para></listitem>
<listitem><para>If <option>--from-expression</option> is given, <listitem><para>If <option>--from-expression</option> is given,
<replaceable>args</replaceable> are Nix <link <emphasis>args</emphasis> are Nix <link
linkend="ss-functions">functions</link> that are called with the linkend="ss-functions">functions</link> that are called with the
active Nix expression as their single argument. The derivations active Nix expression as their single argument. The derivations
returned by those function calls are installed. This allows returned by those function calls are installed. This allows
@ -377,12 +377,12 @@ number of possible ways:
if there are multiple derivations with the same if there are multiple derivations with the same
name.</para></listitem> name.</para></listitem>
<listitem><para>If <replaceable>args</replaceable> are store <listitem><para>If <emphasis>args</emphasis> are store
derivations, then these are <link derivations, then these are <link
linkend="rsec-nix-store-realise">realised</link>, and the resulting linkend="rsec-nix-store-realise">realised</link>, and the resulting
output paths are installed.</para></listitem> output paths are installed.</para></listitem>
<listitem><para>If <replaceable>args</replaceable> are store paths <listitem><para>If <emphasis>args</emphasis> are store paths
that are not store derivations, then these are <link that are not store derivations, then these are <link
linkend="rsec-nix-store-realise">realised</link> and linkend="rsec-nix-store-realise">realised</link> and
installed.</para></listitem> installed.</para></listitem>
@ -518,7 +518,7 @@ $ nix-env -f '&lt;nixpkgs>' -iA hello --dry-run
installing ‘hello-2.10’ installing ‘hello-2.10’
this path will be fetched (0.04 MiB download, 0.19 MiB unpacked): this path will be fetched (0.04 MiB download, 0.19 MiB unpacked):
/nix/store/wkhdf9jinag5750mqlax6z2zbwhqb76n-hello-2.10 /nix/store/wkhdf9jinag5750mqlax6z2zbwhqb76n-hello-2.10
<replaceable>...</replaceable></screen> <emphasis>...</emphasis></screen>
</para> </para>
@ -556,7 +556,7 @@ $ nix-env -f https://github.com/NixOS/nixpkgs/archive/nixos-14.12.tar.gz -iA fir
<arg choice='plain'><option>--eq</option></arg> <arg choice='plain'><option>--eq</option></arg>
<arg choice='plain'><option>--always</option></arg> <arg choice='plain'><option>--always</option></arg>
</group> </group>
<arg choice='plain' rep='repeat'><replaceable>args</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>args</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -566,15 +566,15 @@ $ nix-env -f https://github.com/NixOS/nixpkgs/archive/nixos-14.12.tar.gz -iA fir
<para>The upgrade operation creates a new user environment, based on <para>The upgrade operation creates a new user environment, based on
the current generation of the active profile, in which all store paths the current generation of the active profile, in which all store paths
are replaced for which there are newer versions in the set of paths are replaced for which there are newer versions in the set of paths
described by <replaceable>args</replaceable>. Paths for which there described by <emphasis>args</emphasis>. Paths for which there
are no newer versions are left untouched; this is not an error. It is are no newer versions are left untouched; this is not an error. It is
also not an error if an element of <replaceable>args</replaceable> also not an error if an element of <emphasis>args</emphasis>
matches no installed derivations.</para> matches no installed derivations.</para>
<para>For a description of how <replaceable>args</replaceable> is <para>For a description of how <emphasis>args</emphasis> is
mapped to a set of store paths, see <link mapped to a set of store paths, see <link
linkend="rsec-nix-env-install"><option>--install</option></link>. If linkend="rsec-nix-env-install"><option>--install</option></link>. If
<replaceable>args</replaceable> describes multiple store paths with <emphasis>args</emphasis> describes multiple store paths with
the same symbolic name, only the one with the highest version is the same symbolic name, only the one with the highest version is
installed.</para> installed.</para>
@ -711,7 +711,7 @@ lexicographically (i.e., using case-sensitive string comparison).</para>
<arg choice='plain'><option>--uninstall</option></arg> <arg choice='plain'><option>--uninstall</option></arg>
<arg choice='plain'><option>-e</option></arg> <arg choice='plain'><option>-e</option></arg>
</group> </group>
<arg choice='plain' rep='repeat'><replaceable>drvnames</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>drvnames</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -720,7 +720,7 @@ lexicographically (i.e., using case-sensitive string comparison).</para>
<para>The uninstall operation creates a new user environment, based on <para>The uninstall operation creates a new user environment, based on
the current generation of the active profile, from which the store the current generation of the active profile, from which the store
paths designated by the symbolic names paths designated by the symbolic names
<replaceable>names</replaceable> are removed.</para> <emphasis>names</emphasis> are removed.</para>
</refsection> </refsection>
@ -745,7 +745,7 @@ $ nix-env -e '.*' <lineannotation>(remove everything)</lineannotation></screen>
<cmdsynopsis> <cmdsynopsis>
<command>nix-env</command> <command>nix-env</command>
<arg choice='plain'><option>--set</option></arg> <arg choice='plain'><option>--set</option></arg>
<arg choice='plain'><replaceable>drvname</replaceable></arg> <arg choice='plain'><emphasis>drvname</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -783,9 +783,9 @@ $ nix-env -p /nix/var/nix/profiles/browser --set firefox</screen>
<cmdsynopsis> <cmdsynopsis>
<command>nix-env</command> <command>nix-env</command>
<arg choice='plain'><option>--set-flag</option></arg> <arg choice='plain'><option>--set-flag</option></arg>
<arg choice='plain'><replaceable>name</replaceable></arg> <arg choice='plain'><emphasis>name</emphasis></arg>
<arg choice='plain'><replaceable>value</replaceable></arg> <arg choice='plain'><emphasis>value</emphasis></arg>
<arg choice='plain' rep='repeat'><replaceable>drvnames</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>drvnames</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -848,8 +848,8 @@ firefox-2.0.0.9 <lineannotation>(the current one)</lineannotation>
$ nix-env --preserve-installed -i firefox-2.0.0.11 $ nix-env --preserve-installed -i firefox-2.0.0.11
installing `firefox-2.0.0.11' installing `firefox-2.0.0.11'
building path(s) `/nix/store/myy0y59q3ig70dgq37jqwg1j0rsapzsl-user-environment' building path(s) `/nix/store/myy0y59q3ig70dgq37jqwg1j0rsapzsl-user-environment'
collision between `/nix/store/<replaceable>...</replaceable>-firefox-2.0.0.11/bin/firefox' collision between `/nix/store/<emphasis>...</emphasis>-firefox-2.0.0.11/bin/firefox'
and `/nix/store/<replaceable>...</replaceable>-firefox-2.0.0.9/bin/firefox'. and `/nix/store/<emphasis>...</emphasis>-firefox-2.0.0.9/bin/firefox'.
<lineannotation>(i.e., can’t have two active at the same time)</lineannotation> <lineannotation>(i.e., can’t have two active at the same time)</lineannotation>
$ nix-env --set-flag active false firefox $ nix-env --set-flag active false firefox
@ -940,12 +940,12 @@ $ nix-env --set-flag priority 10 gcc</screen>
<arg choice='plain'><option>--attr</option></arg> <arg choice='plain'><option>--attr</option></arg>
<arg choice='plain'><option>-A</option></arg> <arg choice='plain'><option>-A</option></arg>
</group> </group>
<replaceable>attribute-path</replaceable> <emphasis>attribute-path</emphasis>
</arg> </arg>
<sbr /> <sbr />
<arg choice='plain' rep='repeat'><replaceable>names</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>names</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -959,7 +959,7 @@ profile (<option>--installed</option>), or the derivations that are
available for installation in the active Nix expression available for installation in the active Nix expression
(<option>--available</option>). It only prints information about (<option>--available</option>). It only prints information about
derivations whose symbolic name matches one of derivations whose symbolic name matches one of
<replaceable>names</replaceable>.</para> <emphasis>names</emphasis>.</para>
<para>The derivations are sorted by their <literal>name</literal> <para>The derivations are sorted by their <literal>name</literal>
attributes.</para> attributes.</para>
@ -1086,21 +1086,21 @@ user environment elements, etc. -->
<variablelist> <variablelist>
<varlistentry><term><literal>&lt;</literal> <replaceable>version</replaceable></term> <varlistentry><term><literal>&lt;</literal> <emphasis>version</emphasis></term>
<listitem><para>A newer version of the package is available <listitem><para>A newer version of the package is available
or installed.</para></listitem> or installed.</para></listitem>
</varlistentry> </varlistentry>
<varlistentry><term><literal>=</literal> <replaceable>version</replaceable></term> <varlistentry><term><literal>=</literal> <emphasis>version</emphasis></term>
<listitem><para>At most the same version of the package is <listitem><para>At most the same version of the package is
available or installed.</para></listitem> available or installed.</para></listitem>
</varlistentry> </varlistentry>
<varlistentry><term><literal>></literal> <replaceable>version</replaceable></term> <varlistentry><term><literal>></literal> <emphasis>version</emphasis></term>
<listitem><para>Only older versions of the package are <listitem><para>Only older versions of the package are
available or installed.</para></listitem> available or installed.</para></listitem>
@ -1174,7 +1174,7 @@ docbook-xml-4.2
firefox-1.0.4 firefox-1.0.4
MPlayer-1.0pre7 MPlayer-1.0pre7
ORBit2-2.8.3 ORBit2-2.8.3
<replaceable>…</replaceable> <emphasis>…</emphasis>
</screen> </screen>
</para> </para>
@ -1187,7 +1187,7 @@ firefox-1.0.7
GConf-2.4.0.1 GConf-2.4.0.1
MPlayer-1.0pre7 MPlayer-1.0pre7
ORBit2-2.8.3 ORBit2-2.8.3
<replaceable>…</replaceable> <emphasis>…</emphasis>
</screen> </screen>
</para> </para>
@ -1200,7 +1200,7 @@ $ nix-env -qas
--S GConf-2.4.0.1 <lineannotation>(not present, but there is a substitute for fast installation)</lineannotation> --S GConf-2.4.0.1 <lineannotation>(not present, but there is a substitute for fast installation)</lineannotation>
--S MPlayer-1.0pre3 <lineannotation>(i.e., this is not the installed MPlayer, even though the version is the same!)</lineannotation> --S MPlayer-1.0pre3 <lineannotation>(i.e., this is not the installed MPlayer, even though the version is the same!)</lineannotation>
IP- ORBit2-2.8.3 <lineannotation>(installed and by definition present)</lineannotation> IP- ORBit2-2.8.3 <lineannotation>(installed and by definition present)</lineannotation>
<replaceable>…</replaceable> <emphasis>…</emphasis>
</screen> </screen>
</para> </para>
@ -1218,11 +1218,11 @@ foo-1.2.3
<screen> <screen>
$ nix-env -qc $ nix-env -qc
<replaceable>...</replaceable> <emphasis>...</emphasis>
acrobat-reader-7.0 - ? <lineannotation>(package is not available at all)</lineannotation> acrobat-reader-7.0 - ? <lineannotation>(package is not available at all)</lineannotation>
autoconf-2.59 = 2.59 <lineannotation>(same version)</lineannotation> autoconf-2.59 = 2.59 <lineannotation>(same version)</lineannotation>
firefox-1.0.4 &lt; 1.0.7 <lineannotation>(a more recent version is available)</lineannotation> firefox-1.0.4 &lt; 1.0.7 <lineannotation>(a more recent version is available)</lineannotation>
<replaceable>...</replaceable> <emphasis>...</emphasis>
</screen> </screen>
</para> </para>
@ -1234,7 +1234,7 @@ $ nix-env -qa '.*zip.*'
bzip2-1.0.6 bzip2-1.0.6
gzip-1.6 gzip-1.6
zip-3.0 zip-3.0
<replaceable>…</replaceable> <emphasis>…</emphasis>
</screen> </screen>
</para> </para>
@ -1248,7 +1248,7 @@ chromium-37.0.2062.94
chromium-beta-38.0.2125.24 chromium-beta-38.0.2125.24
firefox-32.0.3 firefox-32.0.3
firefox-with-plugins-13.0.1 firefox-with-plugins-13.0.1
<replaceable>…</replaceable> <emphasis>…</emphasis>
</screen> </screen>
</para> </para>
@ -1280,7 +1280,7 @@ $ nix-env -f https://github.com/NixOS/nixpkgs/archive/master.tar.gz -qa
<arg choice='plain'><option>--switch-profile</option></arg> <arg choice='plain'><option>--switch-profile</option></arg>
<arg choice='plain'><option>-S</option></arg> <arg choice='plain'><option>-S</option></arg>
</group> </group>
<arg choice='req'><replaceable>path</replaceable></arg> <arg choice='req'><emphasis>path</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1288,10 +1288,10 @@ $ nix-env -f https://github.com/NixOS/nixpkgs/archive/master.tar.gz -qa
<refsection><title>Description</title> <refsection><title>Description</title>
<para>This operation makes <replaceable>path</replaceable> the current <para>This operation makes <emphasis>path</emphasis> the current
profile for the user. That is, the symlink profile for the user. That is, the symlink
<filename>~/.nix-profile</filename> is made to point to <filename>~/.nix-profile</filename> is made to point to
<replaceable>path</replaceable>.</para> <emphasis>path</emphasis>.</para>
</refsection> </refsection>
@ -1355,7 +1355,7 @@ $ nix-env --list-generations
<cmdsynopsis> <cmdsynopsis>
<command>nix-env</command> <command>nix-env</command>
<arg choice='plain'><option>--delete-generations</option></arg> <arg choice='plain'><option>--delete-generations</option></arg>
<arg choice='plain' rep='repeat'><replaceable>generations</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>generations</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1407,7 +1407,7 @@ $ nix-env -p other_profile --delete-generations old</screen>
<arg choice='plain'><option>--switch-generation</option></arg> <arg choice='plain'><option>--switch-generation</option></arg>
<arg choice='plain'><option>-G</option></arg> <arg choice='plain'><option>-G</option></arg>
</group> </group>
<arg choice='req'><replaceable>generation</replaceable></arg> <arg choice='req'><emphasis>generation</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1416,13 +1416,13 @@ $ nix-env -p other_profile --delete-generations old</screen>
<refsection><title>Description</title> <refsection><title>Description</title>
<para>This operation makes generation number <para>This operation makes generation number
<replaceable>generation</replaceable> the current generation of the <emphasis>generation</emphasis> the current generation of the
active profile. That is, if the active profile. That is, if the
<filename><replaceable>profile</replaceable></filename> is the path to <filename><emphasis>profile</emphasis></filename> is the path to
the active profile, then the symlink the active profile, then the symlink
<filename><replaceable>profile</replaceable></filename> is made to <filename><emphasis>profile</emphasis></filename> is made to
point to point to
<filename><replaceable>profile</replaceable>-<replaceable>generation</replaceable>-link</filename>, <filename><emphasis>profile</emphasis>-<emphasis>generation</emphasis>-link</filename>,
which is in turn a symlink to the actual user environment in the Nix which is in turn a symlink to the actual user environment in the Nix
store.</para> store.</para>

24
doc/manual/command-ref/nix-hash.xml
View file

@ -22,18 +22,18 @@
<arg><option>--flat</option></arg> <arg><option>--flat</option></arg>
<arg><option>--base32</option></arg> <arg><option>--base32</option></arg>
<arg><option>--truncate</option></arg> <arg><option>--truncate</option></arg>
<arg><option>--type</option> <replaceable>hashAlgo</replaceable></arg> <arg><option>--type</option> <emphasis>hashAlgo</emphasis></arg>
<arg choice='plain' rep='repeat'><replaceable>path</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>path</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
<cmdsynopsis> <cmdsynopsis>
<command>nix-hash</command> <command>nix-hash</command>
<arg choice='plain'><option>--to-base16</option></arg> <arg choice='plain'><option>--to-base16</option></arg>
<arg choice='plain' rep='repeat'><replaceable>hash</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>hash</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
<cmdsynopsis> <cmdsynopsis>
<command>nix-hash</command> <command>nix-hash</command>
<arg choice='plain'><option>--to-base32</option></arg> <arg choice='plain'><option>--to-base32</option></arg>
<arg choice='plain' rep='repeat'><replaceable>hash</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>hash</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsynopsisdiv> </refsynopsisdiv>
@ -42,7 +42,7 @@
<para>The command <command>nix-hash</command> computes the <para>The command <command>nix-hash</command> computes the
cryptographic hash of the contents of each cryptographic hash of the contents of each
<replaceable>path</replaceable> and prints it on standard output. By <emphasis>path</emphasis> and prints it on standard output. By
default, it computes an MD5 hash, but other hash algorithms are default, it computes an MD5 hash, but other hash algorithms are
available as well. The hash is printed in hexadecimal. To generate available as well. The hash is printed in hexadecimal. To generate
the same hash as <command>nix-prefetch-url</command> you have to the same hash as <command>nix-prefetch-url</command> you have to
@ -54,9 +54,9 @@ allows directories and symlinks to be hashed as well as regular files.
The dump is in the <emphasis>NAR format</emphasis> produced by <link The dump is in the <emphasis>NAR format</emphasis> produced by <link
linkend="refsec-nix-store-dump"><command>nix-store</command> linkend="refsec-nix-store-dump"><command>nix-store</command>
<option>--dump</option></link>. Thus, <literal>nix-hash <option>--dump</option></link>. Thus, <literal>nix-hash
<replaceable>path</replaceable></literal> yields the same <emphasis>path</emphasis></literal> yields the same
cryptographic hash as <literal>nix-store --dump cryptographic hash as <literal>nix-store --dump
<replaceable>path</replaceable> | md5sum</literal>.</para> <emphasis>path</emphasis> | md5sum</literal>.</para>
</refsection> </refsection>
@ -68,9 +68,9 @@ cryptographic hash as <literal>nix-store --dump
<varlistentry><term><option>--flat</option></term> <varlistentry><term><option>--flat</option></term>
<listitem><para>Print the cryptographic hash of the contents of <listitem><para>Print the cryptographic hash of the contents of
each regular file <replaceable>path</replaceable>. That is, do each regular file <emphasis>path</emphasis>. That is, do
not compute the hash over the dump of not compute the hash over the dump of
<replaceable>path</replaceable>. The result is identical to that <emphasis>path</emphasis>. The result is identical to that
produced by the GNU commands <command>md5sum</command> and produced by the GNU commands <command>md5sum</command> and
<command>sha1sum</command>.</para></listitem> <command>sha1sum</command>.</para></listitem>
@ -92,7 +92,7 @@ cryptographic hash as <literal>nix-store --dump
</varlistentry> </varlistentry>
<varlistentry><term><option>--type</option> <replaceable>hashAlgo</replaceable></term> <varlistentry><term><option>--type</option> <emphasis>hashAlgo</emphasis></term>
<listitem><para>Use the specified cryptographic hash algorithm, <listitem><para>Use the specified cryptographic hash algorithm,
which can be one of <literal>md5</literal>, which can be one of <literal>md5</literal>,
@ -104,7 +104,7 @@ cryptographic hash as <literal>nix-store --dump
<varlistentry><term><option>--to-base16</option></term> <varlistentry><term><option>--to-base16</option></term>
<listitem><para>Don’t hash anything, but convert the base-32 hash <listitem><para>Don’t hash anything, but convert the base-32 hash
representation <replaceable>hash</replaceable> to representation <emphasis>hash</emphasis> to
hexadecimal.</para></listitem> hexadecimal.</para></listitem>
</varlistentry> </varlistentry>
@ -112,7 +112,7 @@ cryptographic hash as <literal>nix-store --dump
<varlistentry><term><option>--to-base32</option></term> <varlistentry><term><option>--to-base32</option></term>
<listitem><para>Don’t hash anything, but convert the hexadecimal <listitem><para>Don’t hash anything, but convert the hexadecimal
hash representation <replaceable>hash</replaceable> to hash representation <emphasis>hash</emphasis> to
base-32.</para></listitem> base-32.</para></listitem>
</varlistentry> </varlistentry>

28
doc/manual/command-ref/nix-instantiate.xml
View file

@ -29,26 +29,26 @@
</arg> </arg>
</group> </group>
<arg><option>--read-write-mode</option></arg> <arg><option>--read-write-mode</option></arg>
<arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg> <arg><option>--arg</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg> <arg>
<group choice='req'> <group choice='req'>
<arg choice='plain'><option>--attr</option></arg> <arg choice='plain'><option>--attr</option></arg>
<arg choice='plain'><option>-A</option></arg> <arg choice='plain'><option>-A</option></arg>
</group> </group>
<replaceable>attrPath</replaceable> <emphasis>attrPath</emphasis>
</arg> </arg>
<arg><option>--add-root</option> <replaceable>path</replaceable></arg> <arg><option>--add-root</option> <emphasis>path</emphasis></arg>
<arg><option>--indirect</option></arg> <arg><option>--indirect</option></arg>
<group> <group>
<arg choice='plain'><option>--expr</option></arg> <arg choice='plain'><option>--expr</option></arg>
<arg choice='plain'><option>-E</option></arg> <arg choice='plain'><option>-E</option></arg>
</group> </group>
<arg choice='plain' rep='repeat'><replaceable>files</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>files</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
<cmdsynopsis> <cmdsynopsis>
<command>nix-instantiate</command> <command>nix-instantiate</command>
<arg choice='plain'><option>--find-file</option></arg> <arg choice='plain'><option>--find-file</option></arg>
<arg choice='plain' rep='repeat'><replaceable>files</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>files</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsynopsisdiv> </refsynopsisdiv>
@ -58,13 +58,13 @@
<para>The command <command>nix-instantiate</command> generates <link <para>The command <command>nix-instantiate</command> generates <link
linkend="gloss-derivation">store derivations</link> from (high-level) linkend="gloss-derivation">store derivations</link> from (high-level)
Nix expressions. It evaluates the Nix expressions in each of Nix expressions. It evaluates the Nix expressions in each of
<replaceable>files</replaceable> (which defaults to <emphasis>files</emphasis> (which defaults to
<replaceable>./default.nix</replaceable>). Each top-level expression <emphasis>./default.nix</emphasis>). Each top-level expression
should evaluate to a derivation, a list of derivations, or a set of should evaluate to a derivation, a list of derivations, or a set of
derivations. The paths of the resulting store derivations are printed derivations. The paths of the resulting store derivations are printed
on standard output.</para> on standard output.</para>
<para>If <replaceable>files</replaceable> is the character <para>If <emphasis>files</emphasis> is the character
<literal>-</literal>, then a Nix expression will be read from standard <literal>-</literal>, then a Nix expression will be read from standard
input.</para> input.</para>
@ -79,7 +79,7 @@ input.</para>
<variablelist> <variablelist>
<varlistentry> <varlistentry>
<term><option>--add-root</option> <replaceable>path</replaceable></term> <term><option>--add-root</option> <emphasis>path</emphasis></term>
<term><option>--indirect</option></term> <term><option>--indirect</option></term>
<listitem><para>See the <link linkend="opt-add-root">corresponding <listitem><para>See the <link linkend="opt-add-root">corresponding
@ -181,7 +181,7 @@ $ nix-instantiate test.nix <lineannotation>(instantiate)</lineannotation>
/nix/store/cigxbmvy6dzix98dxxh9b6shg7ar5bvs-perl-BerkeleyDB-0.26.drv /nix/store/cigxbmvy6dzix98dxxh9b6shg7ar5bvs-perl-BerkeleyDB-0.26.drv
$ nix-store -r $(nix-instantiate test.nix) <lineannotation>(build)</lineannotation> $ nix-store -r $(nix-instantiate test.nix) <lineannotation>(build)</lineannotation>
<replaceable>...</replaceable> <emphasis>...</emphasis>
/nix/store/qhqk4n8ci095g3sdp93x7rgwyh9rdvgk-perl-BerkeleyDB-0.26 <lineannotation>(output path)</lineannotation> /nix/store/qhqk4n8ci095g3sdp93x7rgwyh9rdvgk-perl-BerkeleyDB-0.26 <lineannotation>(output path)</lineannotation>
$ ls -l /nix/store/qhqk4n8ci095g3sdp93x7rgwyh9rdvgk-perl-BerkeleyDB-0.26 $ ls -l /nix/store/qhqk4n8ci095g3sdp93x7rgwyh9rdvgk-perl-BerkeleyDB-0.26
@ -226,28 +226,28 @@ $ nix-instantiate --eval --xml -E '1 + 2'
<screen> <screen>
$ nix-instantiate --eval --xml -E 'rec { x = "foo"; y = x; }' $ nix-instantiate --eval --xml -E 'rec { x = "foo"; y = x; }'
<replaceable>...</replaceable><![CDATA[ <emphasis>...</emphasis><![CDATA[
<attr name="x"> <attr name="x">
<string value="foo" /> <string value="foo" />
</attr> </attr>
<attr name="y"> <attr name="y">
<unevaluated /> <unevaluated />
</attr>]]> </attr>]]>
<replaceable>...</replaceable></screen> <emphasis>...</emphasis></screen>
Note that <varname>y</varname> is left unevaluated (the XML Note that <varname>y</varname> is left unevaluated (the XML
representation doesn’t attempt to show non-normal forms). representation doesn’t attempt to show non-normal forms).
<screen> <screen>
$ nix-instantiate --eval --xml --strict -E 'rec { x = "foo"; y = x; }' $ nix-instantiate --eval --xml --strict -E 'rec { x = "foo"; y = x; }'
<replaceable>...</replaceable><![CDATA[ <emphasis>...</emphasis><![CDATA[
<attr name="x"> <attr name="x">
<string value="foo" /> <string value="foo" />
</attr> </attr>
<attr name="y"> <attr name="y">
<string value="foo" /> <string value="foo" />
</attr>]]> </attr>]]>
<replaceable>...</replaceable></screen> <emphasis>...</emphasis></screen>
</para> </para>

30
doc/manual/command-ref/nix-prefetch-url.xml
View file

@ -20,24 +20,24 @@
<cmdsynopsis> <cmdsynopsis>
<command>nix-prefetch-url</command> <command>nix-prefetch-url</command>
<arg><option>--version</option></arg> <arg><option>--version</option></arg>
<arg><option>--type</option> <replaceable>hashAlgo</replaceable></arg> <arg><option>--type</option> <emphasis>hashAlgo</emphasis></arg>
<arg><option>--print-path</option></arg> <arg><option>--print-path</option></arg>
<arg><option>--unpack</option></arg> <arg><option>--unpack</option></arg>
<arg><option>--name</option> <replaceable>name</replaceable></arg> <arg><option>--name</option> <emphasis>name</emphasis></arg>
<arg choice='plain'><replaceable>url</replaceable></arg> <arg choice='plain'><emphasis>url</emphasis></arg>
<arg><replaceable>hash</replaceable></arg> <arg><emphasis>hash</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsynopsisdiv> </refsynopsisdiv>
<refsection><title>Description</title> <refsection><title>Description</title>
<para>The command <command>nix-prefetch-url</command> downloads the <para>The command <command>nix-prefetch-url</command> downloads the
file referenced by the URL <replaceable>url</replaceable>, prints its file referenced by the URL <emphasis>url</emphasis>, prints its
cryptographic hash, and copies it into the Nix store. The file name cryptographic hash, and copies it into the Nix store. The file name
in the store is in the store is
<filename><replaceable>hash</replaceable>-<replaceable>baseName</replaceable></filename>, <filename><emphasis>hash</emphasis>-<emphasis>baseName</emphasis></filename>,
where <replaceable>baseName</replaceable> is everything following the where <emphasis>baseName</emphasis> is everything following the
final slash in <replaceable>url</replaceable>.</para> final slash in <emphasis>url</emphasis>.</para>
<para>This command is just a convenience for Nix expression writers. <para>This command is just a convenience for Nix expression writers.
Often a Nix expression fetches some source distribution from the Often a Nix expression fetches some source distribution from the
@ -50,7 +50,7 @@ download it again when you build your Nix expression. Since
as <command>nix-prefetch-url</command>, the redundant download can be as <command>nix-prefetch-url</command>, the redundant download can be
avoided.</para> avoided.</para>
<para>If <replaceable>hash</replaceable> is specified, then a download <para>If <emphasis>hash</emphasis> is specified, then a download
is not performed if the Nix store already contains a file with the is not performed if the Nix store already contains a file with the
same hash and base name. Otherwise, the file is downloaded, and an same hash and base name. Otherwise, the file is downloaded, and an
error is signaled if the actual hash of the file does not match the error is signaled if the actual hash of the file does not match the
@ -67,7 +67,7 @@ downloaded file in the Nix store is also printed.</para>
<variablelist> <variablelist>
<varlistentry><term><option>--type</option> <replaceable>hashAlgo</replaceable></term> <varlistentry><term><option>--type</option> <emphasis>hashAlgo</emphasis></term>
<listitem><para>Use the specified cryptographic hash algorithm, <listitem><para>Use the specified cryptographic hash algorithm,
which can be one of <literal>md5</literal>, which can be one of <literal>md5</literal>,
@ -93,14 +93,14 @@ downloaded file in the Nix store is also printed.</para>
</varlistentry> </varlistentry>
<varlistentry><term><option>--name</option> <replaceable>name</replaceable></term> <varlistentry><term><option>--name</option> <emphasis>name</emphasis></term>
<listitem><para>Override the name of the file in the Nix store. By <listitem><para>Override the name of the file in the Nix store. By
default, this is default, this is
<literal><replaceable>hash</replaceable>-<replaceable>basename</replaceable></literal>, <literal><emphasis>hash</emphasis>-<emphasis>basename</emphasis></literal>,
where <replaceable>basename</replaceable> is the last component of where <emphasis>basename</emphasis> is the last component of
<replaceable>url</replaceable>. Overriding the name is necessary <emphasis>url</emphasis>. Overriding the name is necessary
when <replaceable>basename</replaceable> contains characters that when <emphasis>basename</emphasis> contains characters that
are not allowed in Nix store paths.</para></listitem> are not allowed in Nix store paths.</para></listitem>
</varlistentry> </varlistentry>

48
doc/manual/command-ref/nix-shell.xml
View file

@ -19,20 +19,20 @@
<refsynopsisdiv> <refsynopsisdiv>
<cmdsynopsis> <cmdsynopsis>
<command>nix-shell</command> <command>nix-shell</command>
<arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg> <arg><option>--arg</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg> <arg><option>--argstr</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg> <arg>
<group choice='req'> <group choice='req'>
<arg choice='plain'><option>--attr</option></arg> <arg choice='plain'><option>--attr</option></arg>
<arg choice='plain'><option>-A</option></arg> <arg choice='plain'><option>-A</option></arg>
</group> </group>
<replaceable>attrPath</replaceable> <emphasis>attrPath</emphasis>
</arg> </arg>
<arg><option>--command</option> <replaceable>cmd</replaceable></arg> <arg><option>--command</option> <emphasis>cmd</emphasis></arg>
<arg><option>--run</option> <replaceable>cmd</replaceable></arg> <arg><option>--run</option> <emphasis>cmd</emphasis></arg>
<arg><option>--exclude</option> <replaceable>regexp</replaceable></arg> <arg><option>--exclude</option> <emphasis>regexp</emphasis></arg>
<arg><option>--pure</option></arg> <arg><option>--pure</option></arg>
<arg><option>--keep</option> <replaceable>name</replaceable></arg> <arg><option>--keep</option> <emphasis>name</emphasis></arg>
<group choice='req'> <group choice='req'>
<arg choice='plain'> <arg choice='plain'>
<group choice='req'> <group choice='req'>
@ -41,12 +41,12 @@
</group> </group>
<arg choice='plain' rep='repeat'> <arg choice='plain' rep='repeat'>
<group choice='req'> <group choice='req'>
<arg choice="plain"><replaceable>packages</replaceable></arg> <arg choice="plain"><emphasis>packages</emphasis></arg>
<arg choice="plain"><replaceable>expressions</replaceable></arg> <arg choice="plain"><emphasis>expressions</emphasis></arg>
</group> </group>
</arg> </arg>
</arg> </arg>
<arg><replaceable>path</replaceable></arg> <arg><emphasis>path</emphasis></arg>
</group> </group>
</cmdsynopsis> </cmdsynopsis>
</refsynopsisdiv> </refsynopsisdiv>
@ -57,17 +57,17 @@
dependencies of the specified derivation, but not the derivation dependencies of the specified derivation, but not the derivation
itself. It will then start an interactive shell in which all itself. It will then start an interactive shell in which all
environment variables defined by the derivation environment variables defined by the derivation
<replaceable>path</replaceable> have been set to their corresponding <emphasis>path</emphasis> have been set to their corresponding
values, and the script <literal>$stdenv/setup</literal> has been values, and the script <literal>$stdenv/setup</literal> has been
sourced. This is useful for reproducing the environment of a sourced. This is useful for reproducing the environment of a
derivation for development.</para> derivation for development.</para>
<para>If <replaceable>path</replaceable> is not given, <para>If <emphasis>path</emphasis> is not given,
<command>nix-shell</command> defaults to <command>nix-shell</command> defaults to
<filename>shell.nix</filename> if it exists, and <filename>shell.nix</filename> if it exists, and
<filename>default.nix</filename> otherwise.</para> <filename>default.nix</filename> otherwise.</para>
<para>If <replaceable>path</replaceable> starts with <para>If <emphasis>path</emphasis> starts with
<literal>http://</literal> or <literal>https://</literal>, it is <literal>http://</literal> or <literal>https://</literal>, it is
interpreted as the URL of a tarball that will be downloaded and interpreted as the URL of a tarball that will be downloaded and
unpacked to a temporary location. The tarball must include a single unpacked to a temporary location. The tarball must include a single
@ -103,10 +103,10 @@ also <xref linkend="sec-common-options" />.</phrase></para>
<variablelist> <variablelist>
<varlistentry><term><option>--command</option> <replaceable>cmd</replaceable></term> <varlistentry><term><option>--command</option> <emphasis>cmd</emphasis></term>
<listitem><para>In the environment of the derivation, run the <listitem><para>In the environment of the derivation, run the
shell command <replaceable>cmd</replaceable>. This command is shell command <emphasis>cmd</emphasis>. This command is
executed in an interactive shell. (Use <option>--run</option> to executed in an interactive shell. (Use <option>--run</option> to
use a non-interactive shell instead.) However, a call to use a non-interactive shell instead.) However, a call to
<literal>exit</literal> is implicitly added to the command, so the <literal>exit</literal> is implicitly added to the command, so the
@ -118,7 +118,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</varlistentry> </varlistentry>
<varlistentry><term><option>--run</option> <replaceable>cmd</replaceable></term> <varlistentry><term><option>--run</option> <emphasis>cmd</emphasis></term>
<listitem><para>Like <option>--command</option>, but executes the <listitem><para>Like <option>--command</option>, but executes the
command in a non-interactive shell. This means (among other command in a non-interactive shell. This means (among other
@ -127,10 +127,10 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</varlistentry> </varlistentry>
<varlistentry><term><option>--exclude</option> <replaceable>regexp</replaceable></term> <varlistentry><term><option>--exclude</option> <emphasis>regexp</emphasis></term>
<listitem><para>Do not build any dependencies whose store path <listitem><para>Do not build any dependencies whose store path
matches the regular expression <replaceable>regexp</replaceable>. matches the regular expression <emphasis>regexp</emphasis>.
This option may be specified multiple times.</para></listitem> This option may be specified multiple times.</para></listitem>
</varlistentry> </varlistentry>
@ -150,7 +150,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</varlistentry> </varlistentry>
<varlistentry><term><option>--packages</option> / <option>-p</option> <replaceable>packages</replaceable>…</term> <varlistentry><term><option>--packages</option> / <option>-p</option> <emphasis>packages</emphasis>…</term>
<listitem><para>Set up an environment in which the specified <listitem><para>Set up an environment in which the specified
packages are present. The command line arguments are interpreted packages are present. The command line arguments are interpreted
@ -162,7 +162,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</varlistentry> </varlistentry>
<varlistentry><term><option>-i</option> <replaceable>interpreter</replaceable></term> <varlistentry><term><option>-i</option> <emphasis>interpreter</emphasis></term>
<listitem><para>The chained script interpreter to be invoked by <listitem><para>The chained script interpreter to be invoked by
<command>nix-shell</command>. Only applicable in <command>nix-shell</command>. Only applicable in
@ -171,7 +171,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</listitem></varlistentry> </listitem></varlistentry>
<varlistentry><term><option>--keep</option> <replaceable>name</replaceable></term> <varlistentry><term><option>--keep</option> <emphasis>name</emphasis></term>
<listitem><para>When a <option>--pure</option> shell is started, <listitem><para>When a <option>--pure</option> shell is started,
keep the listed environment variables.</para></listitem> keep the listed environment variables.</para></listitem>
@ -278,13 +278,13 @@ following lines:
<programlisting> <programlisting>
#! /usr/bin/env nix-shell #! /usr/bin/env nix-shell
#! nix-shell -i <replaceable>real-interpreter</replaceable> -p <replaceable>packages</replaceable> #! nix-shell -i <emphasis>real-interpreter</emphasis> -p <emphasis>packages</emphasis>
</programlisting> </programlisting>
where <replaceable>real-interpreter</replaceable> is the “real” script where <emphasis>real-interpreter</emphasis> is the “real” script
interpreter that will be invoked by <command>nix-shell</command> after interpreter that will be invoked by <command>nix-shell</command> after
it has obtained the dependencies and initialised the environment, and it has obtained the dependencies and initialised the environment, and
<replaceable>packages</replaceable> are the attribute names of the <emphasis>packages</emphasis> are the attribute names of the
dependencies in Nixpkgs.</para> dependencies in Nixpkgs.</para>
<para>The lines starting with <literal>#! nix-shell</literal> specify <para>The lines starting with <literal>#! nix-shell</literal> specify

122
doc/manual/command-ref/nix-store.xml
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@ -20,11 +20,11 @@
<cmdsynopsis> <cmdsynopsis>
<command>nix-store</command> <command>nix-store</command>
<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/*)" /> <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/*)" />
<arg><option>--add-root</option> <replaceable>path</replaceable></arg> <arg><option>--add-root</option> <emphasis>path</emphasis></arg>
<arg><option>--indirect</option></arg> <arg><option>--indirect</option></arg>
<arg choice='plain'><replaceable>operation</replaceable></arg> <arg choice='plain'><emphasis>operation</emphasis></arg>
<arg rep='repeat'><replaceable>options</replaceable></arg> <arg rep='repeat'><emphasis>options</emphasis></arg>
<arg rep='repeat'><replaceable>arguments</replaceable></arg> <arg rep='repeat'><emphasis>arguments</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsynopsisdiv> </refsynopsisdiv>
@ -55,14 +55,14 @@ options.</phrase></para>
<variablelist> <variablelist>
<varlistentry xml:id="opt-add-root"><term><option>--add-root</option> <replaceable>path</replaceable></term> <varlistentry xml:id="opt-add-root"><term><option>--add-root</option> <emphasis>path</emphasis></term>
<listitem><para>Causes the result of a realisation <listitem><para>Causes the result of a realisation
(<option>--realise</option> and <option>--force-realise</option>) (<option>--realise</option> and <option>--force-realise</option>)
to be registered as a root of the garbage collector<phrase to be registered as a root of the garbage collector<phrase
condition="manual"> (see <xref linkend="ssec-gc-roots" condition="manual"> (see <xref linkend="ssec-gc-roots"
/>)</phrase>. The root is stored in />)</phrase>. The root is stored in
<replaceable>path</replaceable>, which must be inside a directory <emphasis>path</emphasis>, which must be inside a directory
that is scanned for roots by the garbage collector (i.e., that is scanned for roots by the garbage collector (i.e.,
typically in a subdirectory of typically in a subdirectory of
<filename>/nix/var/nix/gcroots/</filename>) <filename>/nix/var/nix/gcroots/</filename>)
@ -88,11 +88,11 @@ options.</phrase></para>
garbage-collected unless the symlink is removed.</para> garbage-collected unless the symlink is removed.</para>
<para>The <option>--indirect</option> flag causes a uniquely named <para>The <option>--indirect</option> flag causes a uniquely named
symlink to <replaceable>path</replaceable> to be stored in symlink to <emphasis>path</emphasis> to be stored in
<filename>/nix/var/nix/gcroots/auto/</filename>. For instance, <filename>/nix/var/nix/gcroots/auto/</filename>. For instance,
<screen> <screen>
$ nix-store --add-root /home/eelco/bla/result --indirect -r <replaceable>...</replaceable> $ nix-store --add-root /home/eelco/bla/result --indirect -r <emphasis>...</emphasis>
$ ls -l /nix/var/nix/gcroots/auto $ ls -l /nix/var/nix/gcroots/auto
lrwxrwxrwx 1 ... 2005-03-13 21:10 dn54lcypm8f8... -> /home/eelco/bla/result lrwxrwxrwx 1 ... 2005-03-13 21:10 dn54lcypm8f8... -> /home/eelco/bla/result
@ -135,7 +135,7 @@ lrwxrwxrwx 1 ... 2005-03-13 21:10 /home/eelco/bla/result -> /nix/store/1r1134
<arg choice='plain'><option>--realise</option></arg> <arg choice='plain'><option>--realise</option></arg>
<arg choice='plain'><option>-r</option></arg> <arg choice='plain'><option>-r</option></arg>
</group> </group>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
<arg><option>--dry-run</option></arg> <arg><option>--dry-run</option></arg>
</cmdsynopsis> </cmdsynopsis>
@ -204,7 +204,7 @@ printed.)</para>
with <option>-K</option>, if an output path is not identical to with <option>-K</option>, if an output path is not identical to
the corresponding output from the previous build, the new output the corresponding output from the previous build, the new output
path is left in path is left in
<filename>/nix/store/<replaceable>name</replaceable>.check.</filename></para> <filename>/nix/store/<emphasis>name</emphasis>.check.</filename></para>
<para>See also the <option>build-repeat</option> configuration <para>See also the <option>build-repeat</option> configuration
option, which repeats a derivation a number of times and prevents option, which repeats a derivation a number of times and prevents
@ -361,7 +361,7 @@ EOF
<arg choice='plain'><option>--print-live</option></arg> <arg choice='plain'><option>--print-live</option></arg>
<arg choice='plain'><option>--print-dead</option></arg> <arg choice='plain'><option>--print-dead</option></arg>
</group> </group>
<arg><option>--max-freed</option> <replaceable>bytes</replaceable></arg> <arg><option>--max-freed</option> <emphasis>bytes</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -413,11 +413,11 @@ options control what gets deleted and in what order:
<variablelist> <variablelist>
<varlistentry><term><option>--max-freed</option> <replaceable>bytes</replaceable></term> <varlistentry><term><option>--max-freed</option> <emphasis>bytes</emphasis></term>
<listitem><para>Keep deleting paths until at least <listitem><para>Keep deleting paths until at least
<replaceable>bytes</replaceable> bytes have been deleted, then <emphasis>bytes</emphasis> bytes have been deleted, then
stop. The argument <replaceable>bytes</replaceable> can be stop. The argument <emphasis>bytes</emphasis> can be
followed by the multiplicative suffix <literal>K</literal>, followed by the multiplicative suffix <literal>K</literal>,
<literal>M</literal>, <literal>G</literal> or <literal>M</literal>, <literal>G</literal> or
<literal>T</literal>, denoting KiB, MiB, GiB or TiB <literal>T</literal>, denoting KiB, MiB, GiB or TiB
@ -450,7 +450,7 @@ be freed.</para>
<screen> <screen>
$ nix-store --gc $ nix-store --gc
deleting `/nix/store/kq82idx6g0nyzsp2s14gfsc38npai7lf-cairo-1.0.4.tar.gz.drv' deleting `/nix/store/kq82idx6g0nyzsp2s14gfsc38npai7lf-cairo-1.0.4.tar.gz.drv'
<replaceable>...</replaceable> <emphasis>...</emphasis>
8825586 bytes freed (8.42 MiB)</screen> 8825586 bytes freed (8.42 MiB)</screen>
</para> </para>
@ -479,7 +479,7 @@ $ nix-store --gc --max-freed $((100 * 1024 * 1024))</screen>
<command>nix-store</command> <command>nix-store</command>
<arg choice='plain'><option>--delete</option></arg> <arg choice='plain'><option>--delete</option></arg>
<arg><option>--ignore-liveness</option></arg> <arg><option>--ignore-liveness</option></arg>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -487,7 +487,7 @@ $ nix-store --gc --max-freed $((100 * 1024 * 1024))</screen>
<refsection><title>Description</title> <refsection><title>Description</title>
<para>The operation <option>--delete</option> deletes the store paths <para>The operation <option>--delete</option> deletes the store paths
<replaceable>paths</replaceable> from the Nix store, but only if it is <emphasis>paths</emphasis> from the Nix store, but only if it is
safe to do so; that is, when the path is not reachable from a root of safe to do so; that is, when the path is not reachable from a root of
the garbage collector. This means that you can only delete paths that the garbage collector. This means that you can only delete paths that
would also be deleted by <literal>nix-store --gc</literal>. Thus, would also be deleted by <literal>nix-store --gc</literal>. Thus,
@ -537,8 +537,8 @@ error: cannot delete path `/nix/store/zq0h41l75vlb4z45kzgjjmsjxvcv1qk7-mesa-6.4'
<arg choice='plain'><option>-d</option></arg> <arg choice='plain'><option>-d</option></arg>
<arg choice='plain'><option>--graph</option></arg> <arg choice='plain'><option>--graph</option></arg>
<arg choice='plain'><option>--tree</option></arg> <arg choice='plain'><option>--tree</option></arg>
<arg choice='plain'><option>--binding</option> <replaceable>name</replaceable></arg> <arg choice='plain'><option>--binding</option> <emphasis>name</emphasis></arg>
<arg choice='plain'><option>-b</option> <replaceable>name</replaceable></arg> <arg choice='plain'><option>-b</option> <emphasis>name</emphasis></arg>
<arg choice='plain'><option>--hash</option></arg> <arg choice='plain'><option>--hash</option></arg>
<arg choice='plain'><option>--size</option></arg> <arg choice='plain'><option>--size</option></arg>
<arg choice='plain'><option>--roots</option></arg> <arg choice='plain'><option>--roots</option></arg>
@ -547,7 +547,7 @@ error: cannot delete path `/nix/store/zq0h41l75vlb4z45kzgjjmsjxvcv1qk7-mesa-6.4'
<arg><option>-u</option></arg> <arg><option>-u</option></arg>
<arg><option>--force-realise</option></arg> <arg><option>--force-realise</option></arg>
<arg><option>-f</option></arg> <arg><option>-f</option></arg>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -560,7 +560,7 @@ information about the store paths . The queries are described below. At
most one query can be specified. The default query is most one query can be specified. The default query is
<option>--outputs</option>.</para> <option>--outputs</option>.</para>
<para>The paths <replaceable>paths</replaceable> may also be symlinks <para>The paths <emphasis>paths</emphasis> may also be symlinks
from outside of the Nix store, to the Nix store. In that case, the from outside of the Nix store, to the Nix store. In that case, the
query is applied to the target of the symlink.</para> query is applied to the target of the symlink.</para>
@ -603,7 +603,7 @@ query is applied to the target of the symlink.</para>
<listitem><para>Prints out the <link <listitem><para>Prints out the <link
linkend="gloss-output-path">output paths</link> of the store linkend="gloss-output-path">output paths</link> of the store
derivations <replaceable>paths</replaceable>. These are the paths derivations <emphasis>paths</emphasis>. These are the paths
that will be produced when the derivation is that will be produced when the derivation is
built.</para></listitem> built.</para></listitem>
@ -614,7 +614,7 @@ query is applied to the target of the symlink.</para>
<listitem><para>Prints out the <link <listitem><para>Prints out the <link
linkend="gloss-closure">closure</link> of the store path linkend="gloss-closure">closure</link> of the store path
<replaceable>paths</replaceable>.</para> <emphasis>paths</emphasis>.</para>
<para>This query has one option:</para> <para>This query has one option:</para>
@ -647,7 +647,7 @@ query is applied to the target of the symlink.</para>
<listitem><para>Prints the set of <link <listitem><para>Prints the set of <link
linkend="gloss-reference">references</link> of the store paths linkend="gloss-reference">references</link> of the store paths
<replaceable>paths</replaceable>, that is, their immediate <emphasis>paths</emphasis>, that is, their immediate
dependencies. (For <emphasis>all</emphasis> dependencies, use dependencies. (For <emphasis>all</emphasis> dependencies, use
<option>--requisites</option>.)</para></listitem> <option>--requisites</option>.)</para></listitem>
@ -656,9 +656,9 @@ query is applied to the target of the symlink.</para>
<varlistentry><term><option>--referrers</option></term> <varlistentry><term><option>--referrers</option></term>
<listitem><para>Prints the set of <emphasis>referrers</emphasis> of <listitem><para>Prints the set of <emphasis>referrers</emphasis> of
the store paths <replaceable>paths</replaceable>, that is, the the store paths <emphasis>paths</emphasis>, that is, the
store paths currently existing in the Nix store that refer to one store paths currently existing in the Nix store that refer to one
of <replaceable>paths</replaceable>. Note that contrary to the of <emphasis>paths</emphasis>. Note that contrary to the
references, the set of referrers is not constant; it can change as references, the set of referrers is not constant; it can change as
store paths are added or removed.</para></listitem> store paths are added or removed.</para></listitem>
@ -667,11 +667,11 @@ query is applied to the target of the symlink.</para>
<varlistentry><term><option>--referrers-closure</option></term> <varlistentry><term><option>--referrers-closure</option></term>
<listitem><para>Prints the closure of the set of store paths <listitem><para>Prints the closure of the set of store paths
<replaceable>paths</replaceable> under the referrers relation; that <emphasis>paths</emphasis> under the referrers relation; that
is, all store paths that directly or indirectly refer to one of is, all store paths that directly or indirectly refer to one of
<replaceable>paths</replaceable>. These are all the path currently <emphasis>paths</emphasis>. These are all the path currently
in the Nix store that are dependent on in the Nix store that are dependent on
<replaceable>paths</replaceable>.</para></listitem> <emphasis>paths</emphasis>.</para></listitem>
</varlistentry> </varlistentry>
@ -680,7 +680,7 @@ query is applied to the target of the symlink.</para>
<listitem><para>Prints the <link <listitem><para>Prints the <link
linkend="gloss-deriver">deriver</link> of the store paths linkend="gloss-deriver">deriver</link> of the store paths
<replaceable>paths</replaceable>. If the path has no deriver <emphasis>paths</emphasis>. If the path has no deriver
(e.g., if it is a source file), or if the deriver is not known (e.g., if it is a source file), or if the deriver is not known
(e.g., in the case of a binary-only deployment), the string (e.g., in the case of a binary-only deployment), the string
<literal>unknown-deriver</literal> is printed.</para></listitem> <literal>unknown-deriver</literal> is printed.</para></listitem>
@ -690,7 +690,7 @@ query is applied to the target of the symlink.</para>
<varlistentry><term><option>--graph</option></term> <varlistentry><term><option>--graph</option></term>
<listitem><para>Prints the references graph of the store paths <listitem><para>Prints the references graph of the store paths
<replaceable>paths</replaceable> in the format of the <emphasis>paths</emphasis> in the format of the
<command>dot</command> tool of AT&amp;T's <link <command>dot</command> tool of AT&amp;T's <link
xlink:href="http://www.graphviz.org/">Graphviz package</link>. xlink:href="http://www.graphviz.org/">Graphviz package</link>.
This can be used to visualise dependency graphs. To obtain a This can be used to visualise dependency graphs. To obtain a
@ -703,7 +703,7 @@ query is applied to the target of the symlink.</para>
<varlistentry><term><option>--tree</option></term> <varlistentry><term><option>--tree</option></term>
<listitem><para>Prints the references graph of the store paths <listitem><para>Prints the references graph of the store paths
<replaceable>paths</replaceable> as a nested ASCII tree. <emphasis>paths</emphasis> as a nested ASCII tree.
References are ordered by descending closure size; this tends to References are ordered by descending closure size; this tends to
flatten the tree, making it more readable. The query only flatten the tree, making it more readable. The query only
recurses into a store path when it is first encountered; this recurses into a store path when it is first encountered; this
@ -715,7 +715,7 @@ query is applied to the target of the symlink.</para>
<varlistentry><term><option>--graphml</option></term> <varlistentry><term><option>--graphml</option></term>
<listitem><para>Prints the references graph of the store paths <listitem><para>Prints the references graph of the store paths
<replaceable>paths</replaceable> in the <link <emphasis>paths</emphasis> in the <link
xlink:href="http://graphml.graphdrawing.org/">GraphML</link> file format. xlink:href="http://graphml.graphdrawing.org/">GraphML</link> file format.
This can be used to visualise dependency graphs. To obtain a This can be used to visualise dependency graphs. To obtain a
build-time dependency graph, apply this to a store derivation. To build-time dependency graph, apply this to a store derivation. To
@ -724,12 +724,12 @@ query is applied to the target of the symlink.</para>
</varlistentry> </varlistentry>
<varlistentry><term><option>--binding</option> <replaceable>name</replaceable></term> <varlistentry><term><option>--binding</option> <emphasis>name</emphasis></term>
<term><option>-b</option> <replaceable>name</replaceable></term> <term><option>-b</option> <emphasis>name</emphasis></term>
<listitem><para>Prints the value of the attribute <listitem><para>Prints the value of the attribute
<replaceable>name</replaceable> (i.e., environment variable) of <emphasis>name</emphasis> (i.e., environment variable) of
the store derivations <replaceable>paths</replaceable>. It is an the store derivations <emphasis>paths</emphasis>. It is an
error for a derivation to not have the specified error for a derivation to not have the specified
attribute.</para></listitem> attribute.</para></listitem>
@ -738,7 +738,7 @@ query is applied to the target of the symlink.</para>
<varlistentry><term><option>--hash</option></term> <varlistentry><term><option>--hash</option></term>
<listitem><para>Prints the SHA-256 hash of the contents of the <listitem><para>Prints the SHA-256 hash of the contents of the
store paths <replaceable>paths</replaceable> (that is, the hash of store paths <emphasis>paths</emphasis> (that is, the hash of
the output of <command>nix-store --dump</command> on the given the output of <command>nix-store --dump</command> on the given
paths). Since the hash is stored in the Nix database, this is a paths). Since the hash is stored in the Nix database, this is a
fast operation.</para></listitem> fast operation.</para></listitem>
@ -748,7 +748,7 @@ query is applied to the target of the symlink.</para>
<varlistentry><term><option>--size</option></term> <varlistentry><term><option>--size</option></term>
<listitem><para>Prints the size in bytes of the contents of the <listitem><para>Prints the size in bytes of the contents of the
store paths <replaceable>paths</replaceable> — to be precise, the store paths <emphasis>paths</emphasis> — to be precise, the
size of the output of <command>nix-store --dump</command> on the size of the output of <command>nix-store --dump</command> on the
given paths. Note that the actual disk space required by the given paths. Note that the actual disk space required by the
store paths may be higher, especially on filesystems with large store paths may be higher, especially on filesystems with large
@ -760,7 +760,7 @@ query is applied to the target of the symlink.</para>
<listitem><para>Prints the garbage collector roots that point, <listitem><para>Prints the garbage collector roots that point,
directly or indirectly, at the store paths directly or indirectly, at the store paths
<replaceable>paths</replaceable>.</para></listitem> <emphasis>paths</emphasis>.</para></listitem>
</varlistentry> </varlistentry>
@ -778,7 +778,7 @@ query is applied to the target of the symlink.</para>
$ nix-store -qR $(which svn) $ nix-store -qR $(which svn)
/nix/store/5mbglq5ldqld8sj57273aljwkfvj22mc-subversion-1.1.4 /nix/store/5mbglq5ldqld8sj57273aljwkfvj22mc-subversion-1.1.4
/nix/store/9lz9yc6zgmc0vlqmn2ipcpkjlmbi51vv-glibc-2.3.4 /nix/store/9lz9yc6zgmc0vlqmn2ipcpkjlmbi51vv-glibc-2.3.4
<replaceable>...</replaceable></screen> <emphasis>...</emphasis></screen>
</para> </para>
@ -789,7 +789,7 @@ $ nix-store -qR $(nix-store -qd $(which svn))
/nix/store/02iizgn86m42q905rddvg4ja975bk2i4-grep-2.5.1.tar.bz2.drv /nix/store/02iizgn86m42q905rddvg4ja975bk2i4-grep-2.5.1.tar.bz2.drv
/nix/store/07a2bzxmzwz5hp58nf03pahrv2ygwgs3-gcc-wrapper.sh /nix/store/07a2bzxmzwz5hp58nf03pahrv2ygwgs3-gcc-wrapper.sh
/nix/store/0ma7c9wsbaxahwwl04gbw3fcd806ski4-glibc-2.3.4.drv /nix/store/0ma7c9wsbaxahwwl04gbw3fcd806ski4-glibc-2.3.4.drv
<replaceable>... lots of other paths ...</replaceable></screen> <emphasis>... lots of other paths ...</emphasis></screen>
The difference with the previous example is that we ask the closure of The difference with the previous example is that we ask the closure of
the derivation (<option>-qd</option>), not the closure of the output the derivation (<option>-qd</option>), not the closure of the output
@ -804,7 +804,7 @@ $ nix-store -q --tree $(nix-store -qd $(which svn))
+---/nix/store/fmzxmpjx2lh849ph0l36snfj9zdibw67-bash-3.0.drv +---/nix/store/fmzxmpjx2lh849ph0l36snfj9zdibw67-bash-3.0.drv
| +---/nix/store/570hmhmx3v57605cqg9yfvvyh0nnb8k8-bash | +---/nix/store/570hmhmx3v57605cqg9yfvvyh0nnb8k8-bash
| +---/nix/store/p3srsbd8dx44v2pg6nbnszab5mcwx03v-builder.sh | +---/nix/store/p3srsbd8dx44v2pg6nbnszab5mcwx03v-builder.sh
<replaceable>...</replaceable></screen> <emphasis>...</emphasis></screen>
</para> </para>
@ -827,7 +827,7 @@ $ nix-store -q --referrers $(nix-store -q --binding openssl $(nix-store -qd $(wh
$ nix-store -q --referrers-closure $(ldd $(which svn) | grep /libc.so | awk '{print $3}') $ nix-store -q --referrers-closure $(ldd $(which svn) | grep /libc.so | awk '{print $3}')
/nix/store/034a6h4vpz9kds5r6kzb9lhh81mscw43-libgnomeprintui-2.8.2 /nix/store/034a6h4vpz9kds5r6kzb9lhh81mscw43-libgnomeprintui-2.8.2
/nix/store/15l3yi0d45prm7a82pcrknxdh6nzmxza-gawk-3.1.4 /nix/store/15l3yi0d45prm7a82pcrknxdh6nzmxza-gawk-3.1.4
<replaceable>...</replaceable></screen> <emphasis>...</emphasis></screen>
Note that <command>ldd</command> is a command that prints out the Note that <command>ldd</command> is a command that prints out the
dynamic libraries used by an ELF executable.</para> dynamic libraries used by an ELF executable.</para>
@ -893,7 +893,7 @@ $ nix-store -q --roots $(which svn)
<cmdsynopsis> <cmdsynopsis>
<command>nix-store</command> <command>nix-store</command>
<arg choice='plain'><option>--add</option></arg> <arg choice='plain'><option>--add</option></arg>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -926,8 +926,8 @@ $ nix-store --add ./foo.c
<command>nix-store</command> <command>nix-store</command>
<arg><option>--recursive</option></arg> <arg><option>--recursive</option></arg>
<arg choice='plain'><option>--add-fixed</option></arg> <arg choice='plain'><option>--add-fixed</option></arg>
<arg choice='plain'><replaceable>algorithm</replaceable></arg> <arg choice='plain'><emphasis>algorithm</emphasis></arg>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1039,7 +1039,7 @@ in Nix itself.</para>
<cmdsynopsis> <cmdsynopsis>
<command>nix-store</command> <command>nix-store</command>
<arg choice='plain'><option>--verify-path</option></arg> <arg choice='plain'><option>--verify-path</option></arg>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1077,7 +1077,7 @@ $ nix-store --verify-path $(nix-store -qR $(which svn))
<cmdsynopsis> <cmdsynopsis>
<command>nix-store</command> <command>nix-store</command>
<arg choice='plain'><option>--repair-path</option></arg> <arg choice='plain'><option>--repair-path</option></arg>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1123,7 +1123,7 @@ fetching path `/nix/store/d7a81wsm1ijwwpkks3725661h3263p5-glibc-2.13'...
<cmdsynopsis> <cmdsynopsis>
<command>nix-store</command> <command>nix-store</command>
<arg choice='plain'><option>--dump</option></arg> <arg choice='plain'><option>--dump</option></arg>
<arg choice='plain'><replaceable>path</replaceable></arg> <arg choice='plain'><emphasis>path</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1131,7 +1131,7 @@ fetching path `/nix/store/d7a81wsm1ijwwpkks3725661h3263p5-glibc-2.13'...
<para>The operation <option>--dump</option> produces a NAR (Nix <para>The operation <option>--dump</option> produces a NAR (Nix
ARchive) file containing the contents of the file system tree rooted ARchive) file containing the contents of the file system tree rooted
at <replaceable>path</replaceable>. The archive is written to at <emphasis>path</emphasis>. The archive is written to
standard output.</para> standard output.</para>
<para>A NAR archive is like a TAR or Zip archive, but it contains only <para>A NAR archive is like a TAR or Zip archive, but it contains only
@ -1173,14 +1173,14 @@ links, but not other types of files (such as device nodes).</para>
<cmdsynopsis> <cmdsynopsis>
<command>nix-store</command> <command>nix-store</command>
<arg choice='plain'><option>--restore</option></arg> <arg choice='plain'><option>--restore</option></arg>
<arg choice='plain'><replaceable>path</replaceable></arg> <arg choice='plain'><emphasis>path</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
<refsection><title>Description</title> <refsection><title>Description</title>
<para>The operation <option>--restore</option> unpacks a NAR archive <para>The operation <option>--restore</option> unpacks a NAR archive
to <replaceable>path</replaceable>, which must not already exist. The to <emphasis>path</emphasis>, which must not already exist. The
archive is read from standard input.</para> archive is read from standard input.</para>
</refsection> </refsection>
@ -1198,7 +1198,7 @@ archive is read from standard input.</para>
<cmdsynopsis> <cmdsynopsis>
<command>nix-store</command> <command>nix-store</command>
<arg choice='plain'><option>--export</option></arg> <arg choice='plain'><option>--export</option></arg>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1220,7 +1220,7 @@ that are missing in the target Nix store, the import will fail. To
copy a whole closure, do something like: copy a whole closure, do something like:
<screen> <screen>
$ nix-store --export $(nix-store -qR <replaceable>paths</replaceable>) > out</screen> $ nix-store --export $(nix-store -qR <emphasis>paths</emphasis>) > out</screen>
To import the whole closure again, run: To import the whole closure again, run:
@ -1299,7 +1299,7 @@ progress indication.</para>
<screen> <screen>
$ nix-store --optimise $ nix-store --optimise
hashing files in `/nix/store/qhqx7l2f1kmwihc9bnxs7rc159hsxnf3-gcc-4.1.1' hashing files in `/nix/store/qhqx7l2f1kmwihc9bnxs7rc159hsxnf3-gcc-4.1.1'
<replaceable>...</replaceable> <emphasis>...</emphasis>
541838819 bytes (516.74 MiB) freed by hard-linking 54143 files; 541838819 bytes (516.74 MiB) freed by hard-linking 54143 files;
there are 114486 files with equal contents out of 215894 files in total there are 114486 files with equal contents out of 215894 files in total
</screen> </screen>
@ -1322,7 +1322,7 @@ there are 114486 files with equal contents out of 215894 files in total
<arg choice='plain'><option>--read-log</option></arg> <arg choice='plain'><option>--read-log</option></arg>
<arg choice='plain'><option>-l</option></arg> <arg choice='plain'><option>-l</option></arg>
</group> </group>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg> <arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1351,7 +1351,7 @@ unpacking sources
unpacking source archive /nix/store/p8n1jpqs27mgkjw07pb5269717nzf5f8-ktorrent-2.2.1.tar.gz unpacking source archive /nix/store/p8n1jpqs27mgkjw07pb5269717nzf5f8-ktorrent-2.2.1.tar.gz
ktorrent-2.2.1/ ktorrent-2.2.1/
ktorrent-2.2.1/NEWS ktorrent-2.2.1/NEWS
<replaceable>...</replaceable> <emphasis>...</emphasis>
</screen> </screen>
</refsection> </refsection>
@ -1369,7 +1369,7 @@ ktorrent-2.2.1/NEWS
<cmdsynopsis> <cmdsynopsis>
<command>nix-store</command> <command>nix-store</command>
<arg choice='plain'><option>--dump-db</option></arg> <arg choice='plain'><option>--dump-db</option></arg>
<arg rep='repeat'><replaceable>paths</replaceable></arg> <arg rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1424,7 +1424,7 @@ loads it into the Nix database.</para>
<cmdsynopsis> <cmdsynopsis>
<command>nix-store</command> <command>nix-store</command>
<arg choice='plain'><option>--print-env</option></arg> <arg choice='plain'><option>--print-env</option></arg>
<arg choice='plain'><replaceable>drvpath</replaceable></arg> <arg choice='plain'><emphasis>drvpath</emphasis></arg>
</cmdsynopsis> </cmdsynopsis>
</refsection> </refsection>
@ -1441,7 +1441,7 @@ variable <literal>_args</literal>.</para>
<screen> <screen>
$ nix-store --print-env $(nix-instantiate '&lt;nixpkgs>' -A firefox) $ nix-store --print-env $(nix-instantiate '&lt;nixpkgs>' -A firefox)
<replaceable>…</replaceable> <emphasis>…</emphasis>
export src; src='/nix/store/plpj7qrwcz94z2psh6fchsi7s8yihc7k-firefox-12.0.source.tar.bz2' export src; src='/nix/store/plpj7qrwcz94z2psh6fchsi7s8yihc7k-firefox-12.0.source.tar.bz2'
export stdenv; stdenv='/nix/store/7c8asx3yfrg5dg1gzhzyq2236zfgibnn-stdenv' export stdenv; stdenv='/nix/store/7c8asx3yfrg5dg1gzhzyq2236zfgibnn-stdenv'
export system; system='x86_64-linux' export system; system='x86_64-linux'

16
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@ -13,7 +13,7 @@
</arg> </arg>
<arg> <arg>
<option>--log-format</option> <option>--log-format</option>
<replaceable>format</replaceable> <emphasis>format</emphasis>
</arg> </arg>
<arg> <arg>
<group choice='plain'> <group choice='plain'>
@ -26,19 +26,19 @@
<arg choice='plain'><option>--max-jobs</option></arg> <arg choice='plain'><option>--max-jobs</option></arg>
<arg choice='plain'><option>-j</option></arg> <arg choice='plain'><option>-j</option></arg>
</group> </group>
<replaceable>number</replaceable> <emphasis>number</emphasis>
</arg> </arg>
<arg> <arg>
<option>--cores</option> <option>--cores</option>
<replaceable>number</replaceable> <emphasis>number</emphasis>
</arg> </arg>
<arg> <arg>
<option>--max-silent-time</option> <option>--max-silent-time</option>
<replaceable>number</replaceable> <emphasis>number</emphasis>
</arg> </arg>
<arg> <arg>
<option>--timeout</option> <option>--timeout</option>
<replaceable>number</replaceable> <emphasis>number</emphasis>
</arg> </arg>
<arg> <arg>
<group choice='plain'> <group choice='plain'>
@ -56,12 +56,12 @@
<arg><option>--readonly-mode</option></arg> <arg><option>--readonly-mode</option></arg>
<arg> <arg>
<option>-I</option> <option>-I</option>
<replaceable>path</replaceable> <emphasis>path</emphasis>
</arg> </arg>
<arg> <arg>
<option>--option</option> <option>--option</option>
<replaceable>name</replaceable> <emphasis>name</emphasis>
<replaceable>value</replaceable> <emphasis>value</emphasis>
</arg> </arg>
<sbr /> <sbr />

46
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@ -92,12 +92,12 @@
</varlistentry> </varlistentry>
<varlistentry xml:id="opt-log-format"><term><option>--log-format</option> <replaceable>format</replaceable></term> <varlistentry xml:id="opt-log-format"><term><option>--log-format</option> <emphasis>format</emphasis></term>
<listitem> <listitem>
<para>This option can be used to change the output of the log format, with <para>This option can be used to change the output of the log format, with
<replaceable>format</replaceable> being one of:</para> <emphasis>format</emphasis> being one of:</para>
<variablelist> <variablelist>
@ -130,13 +130,13 @@
error. This option suppresses this behaviour. Note that the error. This option suppresses this behaviour. Note that the
builder's standard output and error are always written to a log file builder's standard output and error are always written to a log file
in in
<filename><replaceable>prefix</replaceable>/nix/var/log/nix</filename>.</para></listitem> <filename><emphasis>prefix</emphasis>/nix/var/log/nix</filename>.</para></listitem>
</varlistentry> </varlistentry>
<varlistentry xml:id="opt-max-jobs"><term><option>--max-jobs</option> / <option>-j</option> <varlistentry xml:id="opt-max-jobs"><term><option>--max-jobs</option> / <option>-j</option>
<replaceable>number</replaceable></term> <emphasis>number</emphasis></term>
<listitem> <listitem>
@ -166,7 +166,7 @@
of parallelism. For instance, in Nixpkgs, if the derivation of parallelism. For instance, in Nixpkgs, if the derivation
attribute <varname>enableParallelBuilding</varname> is set to attribute <varname>enableParallelBuilding</varname> is set to
<literal>true</literal>, the builder passes the <literal>true</literal>, the builder passes the
<option>-j<replaceable>N</replaceable></option> flag to GNU Make. <option>-j<emphasis>N</emphasis></option> flag to GNU Make.
It defaults to the value of the <link It defaults to the value of the <link
linkend='conf-cores'><literal>cores</literal></link> linkend='conf-cores'><literal>cores</literal></link>
configuration setting, if set, or <literal>1</literal> otherwise. configuration setting, if set, or <literal>1</literal> otherwise.
@ -271,7 +271,7 @@
</varlistentry> </varlistentry>
<varlistentry><term><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></term> <varlistentry><term><option>--arg</option> <emphasis>name</emphasis> <emphasis>value</emphasis></term>
<listitem><para>This option is accepted by <listitem><para>This option is accepted by
<command>nix-env</command>, <command>nix-instantiate</command>, <command>nix-env</command>, <command>nix-instantiate</command>,
@ -280,14 +280,14 @@
automatically try to call functions that automatically try to call functions that
it encounters. It can automatically call functions for which every it encounters. It can automatically call functions for which every
argument has a <link linkend='ss-functions'>default value</link> argument has a <link linkend='ss-functions'>default value</link>
(e.g., <literal>{ <replaceable>argName</replaceable> ? (e.g., <literal>{ <emphasis>argName</emphasis> ?
<replaceable>defaultValue</replaceable> }: <emphasis>defaultValue</emphasis> }:
<replaceable>...</replaceable></literal>). With <emphasis>...</emphasis></literal>). With
<option>--arg</option>, you can also call functions that have <option>--arg</option>, you can also call functions that have
arguments without a default value (or override a default value). arguments without a default value (or override a default value).
That is, if the evaluator encounters a function with an argument That is, if the evaluator encounters a function with an argument
named <replaceable>name</replaceable>, it will call it with value named <emphasis>name</emphasis>, it will call it with value
<replaceable>value</replaceable>.</para> <emphasis>value</emphasis>.</para>
<para>For instance, the top-level <literal>default.nix</literal> in <para>For instance, the top-level <literal>default.nix</literal> in
Nixpkgs is actually a function: Nixpkgs is actually a function:
@ -295,23 +295,23 @@
<programlisting> <programlisting>
{ # The system (e.g., `i686-linux') for which to build the packages. { # The system (e.g., `i686-linux') for which to build the packages.
system ? builtins.currentSystem system ? builtins.currentSystem
<replaceable>...</replaceable> <emphasis>...</emphasis>
}: <replaceable>...</replaceable></programlisting> }: <emphasis>...</emphasis></programlisting>
So if you call this Nix expression (e.g., when you do So if you call this Nix expression (e.g., when you do
<literal>nix-env -i <replaceable>pkgname</replaceable></literal>), <literal>nix-env -i <emphasis>pkgname</emphasis></literal>),
the function will be called automatically using the value <link the function will be called automatically using the value <link
linkend='builtin-currentSystem'><literal>builtins.currentSystem</literal></link> linkend='builtin-currentSystem'><literal>builtins.currentSystem</literal></link>
for the <literal>system</literal> argument. You can override this for the <literal>system</literal> argument. You can override this
using <option>--arg</option>, e.g., <literal>nix-env -i using <option>--arg</option>, e.g., <literal>nix-env -i
<replaceable>pkgname</replaceable> --arg system <emphasis>pkgname</emphasis> --arg system
\"i686-freebsd\"</literal>. (Note that since the argument is a Nix \"i686-freebsd\"</literal>. (Note that since the argument is a Nix
string literal, you have to escape the quotes.)</para></listitem> string literal, you have to escape the quotes.)</para></listitem>
</varlistentry> </varlistentry>
<varlistentry><term><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></term> <varlistentry><term><option>--argstr</option> <emphasis>name</emphasis> <emphasis>value</emphasis></term>
<listitem><para>This option is like <option>--arg</option>, only the <listitem><para>This option is like <option>--arg</option>, only the
value is not a Nix expression but a string. So instead of value is not a Nix expression but a string. So instead of
@ -323,17 +323,17 @@
<varlistentry xml:id="opt-attr"><term><option>--attr</option> / <option>-A</option> <varlistentry xml:id="opt-attr"><term><option>--attr</option> / <option>-A</option>
<replaceable>attrPath</replaceable></term> <emphasis>attrPath</emphasis></term>
<listitem><para>Select an attribute from the top-level Nix <listitem><para>Select an attribute from the top-level Nix
expression being evaluated. (<command>nix-env</command>, expression being evaluated. (<command>nix-env</command>,
<command>nix-instantiate</command>, <command>nix-build</command> and <command>nix-instantiate</command>, <command>nix-build</command> and
<command>nix-shell</command> only.) The <emphasis>attribute <command>nix-shell</command> only.) The <emphasis>attribute
path</emphasis> <replaceable>attrPath</replaceable> is a sequence of path</emphasis> <emphasis>attrPath</emphasis> is a sequence of
attribute names separated by dots. For instance, given a top-level attribute names separated by dots. For instance, given a top-level
Nix expression <replaceable>e</replaceable>, the attribute path Nix expression <emphasis>e</emphasis>, the attribute path
<literal>xorg.xorgserver</literal> would cause the expression <literal>xorg.xorgserver</literal> would cause the expression
<literal><replaceable>e</replaceable>.xorg.xorgserver</literal> to <literal><emphasis>e</emphasis>.xorg.xorgserver</literal> to
be used. See <link be used. See <link
linkend='refsec-nix-env-install-examples'><command>nix-env linkend='refsec-nix-env-install-examples'><command>nix-env
--install</command></link> for some concrete examples.</para> --install</command></link> for some concrete examples.</para>
@ -366,7 +366,7 @@
</varlistentry> </varlistentry>
<varlistentry xml:id="opt-I"><term><option>-I</option> <replaceable>path</replaceable></term> <varlistentry xml:id="opt-I"><term><option>-I</option> <emphasis>path</emphasis></term>
<listitem><para>Add a path to the Nix expression search path. This <listitem><para>Add a path to the Nix expression search path. This
option may be given multiple times. See the <envar option may be given multiple times. See the <envar
@ -378,10 +378,10 @@
</varlistentry> </varlistentry>
<varlistentry><term><option>--option</option> <replaceable>name</replaceable> <replaceable>value</replaceable></term> <varlistentry><term><option>--option</option> <emphasis>name</emphasis> <emphasis>value</emphasis></term>
<listitem><para>Set the Nix configuration option <listitem><para>Set the Nix configuration option
<replaceable>name</replaceable> to <replaceable>value</replaceable>. <emphasis>name</emphasis> to <emphasis>value</emphasis>.
This overrides settings in the Nix configuration file (see This overrides settings in the Nix configuration file (see
<citerefentry><refentrytitle>nix.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>).</para></listitem> <citerefentry><refentrytitle>nix.conf</refentrytitle><manvolnum>5</manvolnum></citerefentry>).</para></listitem>

2
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@ -17,6 +17,6 @@
<arg><option>--from-expression</option></arg> <arg><option>--from-expression</option></arg>
<arg><option>-E</option></arg> <arg><option>-E</option></arg>
<arg><option>--from-profile</option> <replaceable>path</replaceable></arg> <arg><option>--from-profile</option> <emphasis>path</emphasis></arg>
</nop> </nop>

18
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@ -91,12 +91,12 @@ disallowedRequisites = [ foobar ];
references graph of their inputs. The attribute is a list of references graph of their inputs. The attribute is a list of
inputs in the Nix store whose references graph the builder needs inputs in the Nix store whose references graph the builder needs
to know. The value of this attribute should be a list of pairs to know. The value of this attribute should be a list of pairs
<literal>[ <replaceable>name1</replaceable> <literal>[ <emphasis>name1</emphasis>
<replaceable>path1</replaceable> <replaceable>name2</replaceable> <emphasis>path1</emphasis> <emphasis>name2</emphasis>
<replaceable>path2</replaceable> <replaceable>...</replaceable> <emphasis>path2</emphasis> <emphasis>...</emphasis>
]</literal>. The references graph of each ]</literal>. The references graph of each
<replaceable>pathN</replaceable> will be stored in a text file <emphasis>pathN</emphasis> will be stored in a text file
<replaceable>nameN</replaceable> in the temporary build directory. <emphasis>nameN</emphasis> in the temporary build directory.
The text files have the format used by <command>nix-store The text files have the format used by <command>nix-store
--register-validity</command> (with the deriver fields left --register-validity</command> (with the deriver fields left
empty). For example, when the following derivation is built: empty). For example, when the following derivation is built:
@ -135,7 +135,7 @@ derivation {
Nixpkgs has the line Nixpkgs has the line
<programlisting> <programlisting>
impureEnvVars = [ "http_proxy" "https_proxy" <replaceable>...</replaceable> ]; impureEnvVars = [ "http_proxy" "https_proxy" <emphasis>...</emphasis> ];
</programlisting> </programlisting>
to make it use the proxy server configuration specified by the to make it use the proxy server configuration specified by the
@ -297,11 +297,11 @@ big = "a very long string";
<literal>bigPath</literal> will contain the absolute path to a <literal>bigPath</literal> will contain the absolute path to a
temporary file containing <literal>a very long temporary file containing <literal>a very long
string</literal>. That is, for any attribute string</literal>. That is, for any attribute
<replaceable>x</replaceable> listed in <emphasis>x</emphasis> listed in
<varname>passAsFile</varname>, Nix will pass an environment <varname>passAsFile</varname>, Nix will pass an environment
variable <literal><replaceable>x</replaceable>Path</literal> holding variable <literal><emphasis>x</emphasis>Path</literal> holding
the path of the file containing the value of attribute the path of the file containing the value of attribute
<replaceable>x</replaceable>. This is useful when you need to pass <emphasis>x</emphasis>. This is useful when you need to pass
large strings to a builder, since most operating systems impose a large strings to a builder, since most operating systems impose a
limit on the size of the environment (typically, a few hundred limit on the size of the environment (typically, a few hundred
kilobyte).</para></listitem> kilobyte).</para></listitem>

2
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@ -58,7 +58,7 @@ steps:</para>
the <literal>PATH</literal>. The <literal>perl</literal> environment the <literal>PATH</literal>. The <literal>perl</literal> environment
variable points to the location of the Perl package (since it variable points to the location of the Perl package (since it
was passed in as an attribute to the derivation), so was passed in as an attribute to the derivation), so
<filename><replaceable>$perl</replaceable>/bin</filename> is the <filename><emphasis>$perl</emphasis>/bin</filename> is the
directory containing the Perl interpreter.</para> directory containing the Perl interpreter.</para>
</listitem> </listitem>

420
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File diff suppressed because it is too large Load diff

10
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@ -50,7 +50,7 @@ the single Nix expression in that directory
<para>Nix functions generally have the form <literal>{ x, y, ..., <para>Nix functions generally have the form <literal>{ x, y, ...,
z }: e</literal> where <varname>x</varname>, <varname>y</varname>, z }: e</literal> where <varname>x</varname>, <varname>y</varname>,
etc. are the names of the expected arguments, and where etc. are the names of the expected arguments, and where
<replaceable>e</replaceable> is the body of the function. So <emphasis>e</emphasis> is the body of the function. So
here, the entire remainder of the file is the body of the here, the entire remainder of the file is the body of the
function; when given the required arguments, the body should function; when given the required arguments, the body should
describe how to build an instance of the Hello package.</para> describe how to build an instance of the Hello package.</para>
@ -69,10 +69,10 @@ the single Nix expression in that directory
<emphasis>attributes</emphasis>. A set is just a list of <emphasis>attributes</emphasis>. A set is just a list of
key/value pairs where each key is a string and each value is an key/value pairs where each key is a string and each value is an
arbitrary Nix expression. They take the general form <literal>{ arbitrary Nix expression. They take the general form <literal>{
<replaceable>name1</replaceable> = <emphasis>name1</emphasis> =
<replaceable>expr1</replaceable>; <replaceable>...</replaceable> <emphasis>expr1</emphasis>; <emphasis>...</emphasis>
<replaceable>nameN</replaceable> = <emphasis>nameN</emphasis> =
<replaceable>exprN</replaceable>; }</literal>.</para> <emphasis>exprN</emphasis>; }</literal>.</para>
</listitem> </listitem>

2
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@ -44,7 +44,7 @@ genericBuild ③</programlisting>
subdirectory, it's added to GCC's header search path; and so subdirectory, it's added to GCC's header search path; and so
on.<footnote><para>How does it work? <filename>setup</filename> on.<footnote><para>How does it work? <filename>setup</filename>
tries to source the file tries to source the file
<filename><replaceable>pkg</replaceable>/nix-support/setup-hook</filename> <filename><emphasis>pkg</emphasis>/nix-support/setup-hook</filename>
of all dependencies. These “setup hooks” can then set up whatever of all dependencies. These “setup hooks” can then set up whatever
environment variables they want; for instance, the setup hook for environment variables they want; for instance, the setup hook for
Perl sets the <literal>PERL5LIB</literal> environment variable to Perl sets the <literal>PERL5LIB</literal> environment variable to

24
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@ -137,7 +137,7 @@ while defining a set.</para>
<para>Functions have the following form: <para>Functions have the following form:
<programlisting> <programlisting>
<replaceable>pattern</replaceable>: <replaceable>body</replaceable></programlisting> <emphasis>pattern</emphasis>: <emphasis>body</emphasis></programlisting>
The pattern specifies what the argument of the function must look The pattern specifies what the argument of the function must look
like, and binds variables in the body to (parts of) the like, and binds variables in the body to (parts of) the
@ -190,9 +190,9 @@ map (concat "foo") [ "bar" "bla" "abc" ]</programlisting>
<para>It is possible to provide <emphasis>default values</emphasis> <para>It is possible to provide <emphasis>default values</emphasis>
for attributes, in which case they are allowed to be missing. A for attributes, in which case they are allowed to be missing. A
default value is specified by writing default value is specified by writing
<literal><replaceable>name</replaceable> ? <literal><emphasis>name</emphasis> ?
<replaceable>e</replaceable></literal>, where <emphasis>e</emphasis></literal>, where
<replaceable>e</replaceable> is an arbitrary expression. For example, <emphasis>e</emphasis> is an arbitrary expression. For example,
<programlisting> <programlisting>
{ x, y ? "foo", z ? "bar" }: z + y + x</programlisting> { x, y ? "foo", z ? "bar" }: z + y + x</programlisting>
@ -256,9 +256,9 @@ in concat { x = "foo"; y = "bar"; }</programlisting>
<para>Conditionals look like this: <para>Conditionals look like this:
<programlisting> <programlisting>
if <replaceable>e1</replaceable> then <replaceable>e2</replaceable> else <replaceable>e3</replaceable></programlisting> if <emphasis>e1</emphasis> then <emphasis>e2</emphasis> else <emphasis>e3</emphasis></programlisting>
where <replaceable>e1</replaceable> is an expression that should where <emphasis>e1</emphasis> is an expression that should
evaluate to a Boolean value (<literal>true</literal> or evaluate to a Boolean value (<literal>true</literal> or
<literal>false</literal>).</para> <literal>false</literal>).</para>
@ -271,11 +271,11 @@ evaluate to a Boolean value (<literal>true</literal> or
on or between features and dependencies hold. They look like this: on or between features and dependencies hold. They look like this:
<programlisting> <programlisting>
assert <replaceable>e1</replaceable>; <replaceable>e2</replaceable></programlisting> assert <emphasis>e1</emphasis>; <emphasis>e2</emphasis></programlisting>
where <replaceable>e1</replaceable> is an expression that should where <emphasis>e1</emphasis> is an expression that should
evaluate to a Boolean value. If it evaluates to evaluate to a Boolean value. If it evaluates to
<literal>true</literal>, <replaceable>e2</replaceable> is returned; <literal>true</literal>, <emphasis>e2</emphasis> is returned;
otherwise expression evaluation is aborted and a backtrace is printed.</para> otherwise expression evaluation is aborted and a backtrace is printed.</para>
<para>Here is a Nix expression for the Subversion package that shows <para>Here is a Nix expression for the Subversion package that shows
@ -358,10 +358,10 @@ stdenv.mkDerivation {
<para>A <emphasis>with-expression</emphasis>, <para>A <emphasis>with-expression</emphasis>,
<programlisting> <programlisting>
with <replaceable>e1</replaceable>; <replaceable>e2</replaceable></programlisting> with <emphasis>e1</emphasis>; <emphasis>e2</emphasis></programlisting>
introduces the set <replaceable>e1</replaceable> into the lexical introduces the set <emphasis>e1</emphasis> into the lexical
scope of the expression <replaceable>e2</replaceable>. For instance, scope of the expression <emphasis>e2</emphasis>. For instance,
<programlisting> <programlisting>
let as = { x = "foo"; y = "bar"; }; let as = { x = "foo"; y = "bar"; };

78
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@ -25,48 +25,48 @@ weakest binding).</para>
<tbody> <tbody>
<row> <row>
<entry>Select</entry> <entry>Select</entry>
<entry><replaceable>e</replaceable> <literal>.</literal> <entry><emphasis>e</emphasis> <literal>.</literal>
<replaceable>attrpath</replaceable> <emphasis>attrpath</emphasis>
[ <literal>or</literal> <replaceable>def</replaceable> ] [ <literal>or</literal> <emphasis>def</emphasis> ]
</entry> </entry>
<entry>none</entry> <entry>none</entry>
<entry>Select attribute denoted by the attribute path <entry>Select attribute denoted by the attribute path
<replaceable>attrpath</replaceable> from set <emphasis>attrpath</emphasis> from set
<replaceable>e</replaceable>. (An attribute path is a <emphasis>e</emphasis>. (An attribute path is a
dot-separated list of attribute names.) If the attribute dot-separated list of attribute names.) If the attribute
doesn’t exist, return <replaceable>def</replaceable> if doesn’t exist, return <emphasis>def</emphasis> if
provided, otherwise abort evaluation.</entry> provided, otherwise abort evaluation.</entry>
<entry>1</entry> <entry>1</entry>
</row> </row>
<row> <row>
<entry>Application</entry> <entry>Application</entry>
<entry><replaceable>e1</replaceable> <replaceable>e2</replaceable></entry> <entry><emphasis>e1</emphasis> <emphasis>e2</emphasis></entry>
<entry>left</entry> <entry>left</entry>
<entry>Call function <replaceable>e1</replaceable> with <entry>Call function <emphasis>e1</emphasis> with
argument <replaceable>e2</replaceable>.</entry> argument <emphasis>e2</emphasis>.</entry>
<entry>2</entry> <entry>2</entry>
</row> </row>
<row> <row>
<entry>Arithmetic Negation</entry> <entry>Arithmetic Negation</entry>
<entry><literal>-</literal> <replaceable>e</replaceable></entry> <entry><literal>-</literal> <emphasis>e</emphasis></entry>
<entry>none</entry> <entry>none</entry>
<entry>Arithmetic negation.</entry> <entry>Arithmetic negation.</entry>
<entry>3</entry> <entry>3</entry>
</row> </row>
<row> <row>
<entry>Has Attribute</entry> <entry>Has Attribute</entry>
<entry><replaceable>e</replaceable> <literal>?</literal> <entry><emphasis>e</emphasis> <literal>?</literal>
<replaceable>attrpath</replaceable></entry> <emphasis>attrpath</emphasis></entry>
<entry>none</entry> <entry>none</entry>
<entry>Test whether set <replaceable>e</replaceable> contains <entry>Test whether set <emphasis>e</emphasis> contains
the attribute denoted by <replaceable>attrpath</replaceable>; the attribute denoted by <emphasis>attrpath</emphasis>;
return <literal>true</literal> or return <literal>true</literal> or
<literal>false</literal>.</entry> <literal>false</literal>.</entry>
<entry>4</entry> <entry>4</entry>
</row> </row>
<row> <row>
<entry>List Concatenation</entry> <entry>List Concatenation</entry>
<entry><replaceable>e1</replaceable> <literal>++</literal> <replaceable>e2</replaceable></entry> <entry><emphasis>e1</emphasis> <literal>++</literal> <emphasis>e2</emphasis></entry>
<entry>right</entry> <entry>right</entry>
<entry>List concatenation.</entry> <entry>List concatenation.</entry>
<entry>5</entry> <entry>5</entry>
@ -74,7 +74,7 @@ weakest binding).</para>
<row> <row>
<entry>Multiplication</entry> <entry>Multiplication</entry>
<entry> <entry>
<replaceable>e1</replaceable> <literal>*</literal> <replaceable>e2</replaceable>, <emphasis>e1</emphasis> <literal>*</literal> <emphasis>e2</emphasis>,
</entry> </entry>
<entry>left</entry> <entry>left</entry>
<entry>Arithmetic multiplication.</entry> <entry>Arithmetic multiplication.</entry>
@ -83,7 +83,7 @@ weakest binding).</para>
<row> <row>
<entry>Division</entry> <entry>Division</entry>
<entry> <entry>
<replaceable>e1</replaceable> <literal>/</literal> <replaceable>e2</replaceable> <emphasis>e1</emphasis> <literal>/</literal> <emphasis>e2</emphasis>
</entry> </entry>
<entry>left</entry> <entry>left</entry>
<entry>Arithmetic division.</entry> <entry>Arithmetic division.</entry>
@ -92,7 +92,7 @@ weakest binding).</para>
<row> <row>
<entry>Addition</entry> <entry>Addition</entry>
<entry> <entry>
<replaceable>e1</replaceable> <literal>+</literal> <replaceable>e2</replaceable> <emphasis>e1</emphasis> <literal>+</literal> <emphasis>e2</emphasis>
</entry> </entry>
<entry>left</entry> <entry>left</entry>
<entry>Arithmetic addition.</entry> <entry>Arithmetic addition.</entry>
@ -101,7 +101,7 @@ weakest binding).</para>
<row> <row>
<entry>Subtraction</entry> <entry>Subtraction</entry>
<entry> <entry>
<replaceable>e1</replaceable> <literal>-</literal> <replaceable>e2</replaceable> <emphasis>e1</emphasis> <literal>-</literal> <emphasis>e2</emphasis>
</entry> </entry>
<entry>left</entry> <entry>left</entry>
<entry>Arithmetic subtraction.</entry> <entry>Arithmetic subtraction.</entry>
@ -110,7 +110,7 @@ weakest binding).</para>
<row> <row>
<entry>String Concatenation</entry> <entry>String Concatenation</entry>
<entry> <entry>
<replaceable>string1</replaceable> <literal>+</literal> <replaceable>string2</replaceable> <emphasis>string1</emphasis> <literal>+</literal> <emphasis>string2</emphasis>
</entry> </entry>
<entry>left</entry> <entry>left</entry>
<entry>String concatenation.</entry> <entry>String concatenation.</entry>
@ -118,19 +118,19 @@ weakest binding).</para>
</row> </row>
<row> <row>
<entry>Not</entry> <entry>Not</entry>
<entry><literal>!</literal> <replaceable>e</replaceable></entry> <entry><literal>!</literal> <emphasis>e</emphasis></entry>
<entry>none</entry> <entry>none</entry>
<entry>Boolean negation.</entry> <entry>Boolean negation.</entry>
<entry>8</entry> <entry>8</entry>
</row> </row>
<row> <row>
<entry>Update</entry> <entry>Update</entry>
<entry><replaceable>e1</replaceable> <literal>//</literal> <entry><emphasis>e1</emphasis> <literal>//</literal>
<replaceable>e2</replaceable></entry> <emphasis>e2</emphasis></entry>
<entry>right</entry> <entry>right</entry>
<entry>Return a set consisting of the attributes in <entry>Return a set consisting of the attributes in
<replaceable>e1</replaceable> and <emphasis>e1</emphasis> and
<replaceable>e2</replaceable> (with the latter taking <emphasis>e2</emphasis> (with the latter taking
precedence over the former in case of equally named precedence over the former in case of equally named
attributes).</entry> attributes).</entry>
<entry>9</entry> <entry>9</entry>
@ -138,7 +138,7 @@ weakest binding).</para>
<row> <row>
<entry>Less Than</entry> <entry>Less Than</entry>
<entry> <entry>
<replaceable>e1</replaceable> <literal>&lt;</literal> <replaceable>e2</replaceable>, <emphasis>e1</emphasis> <literal>&lt;</literal> <emphasis>e2</emphasis>,
</entry> </entry>
<entry>none</entry> <entry>none</entry>
<entry>Arithmetic comparison.</entry> <entry>Arithmetic comparison.</entry>
@ -147,7 +147,7 @@ weakest binding).</para>
<row> <row>
<entry>Less Than or Equal To</entry> <entry>Less Than or Equal To</entry>
<entry> <entry>
<replaceable>e1</replaceable> <literal>&lt;=</literal> <replaceable>e2</replaceable> <emphasis>e1</emphasis> <literal>&lt;=</literal> <emphasis>e2</emphasis>
</entry> </entry>
<entry>none</entry> <entry>none</entry>
<entry>Arithmetic comparison.</entry> <entry>Arithmetic comparison.</entry>
@ -156,7 +156,7 @@ weakest binding).</para>
<row> <row>
<entry>Greater Than</entry> <entry>Greater Than</entry>
<entry> <entry>
<replaceable>e1</replaceable> <literal>&gt;</literal> <replaceable>e2</replaceable> <emphasis>e1</emphasis> <literal>&gt;</literal> <emphasis>e2</emphasis>
</entry> </entry>
<entry>none</entry> <entry>none</entry>
<entry>Arithmetic comparison.</entry> <entry>Arithmetic comparison.</entry>
@ -165,7 +165,7 @@ weakest binding).</para>
<row> <row>
<entry>Greater Than or Equal To</entry> <entry>Greater Than or Equal To</entry>
<entry> <entry>
<replaceable>e1</replaceable> <literal>&gt;=</literal> <replaceable>e2</replaceable> <emphasis>e1</emphasis> <literal>&gt;=</literal> <emphasis>e2</emphasis>
</entry> </entry>
<entry>none</entry> <entry>none</entry>
<entry>Arithmetic comparison.</entry> <entry>Arithmetic comparison.</entry>
@ -174,7 +174,7 @@ weakest binding).</para>
<row> <row>
<entry>Equality</entry> <entry>Equality</entry>
<entry> <entry>
<replaceable>e1</replaceable> <literal>==</literal> <replaceable>e2</replaceable> <emphasis>e1</emphasis> <literal>==</literal> <emphasis>e2</emphasis>
</entry> </entry>
<entry>none</entry> <entry>none</entry>
<entry>Equality.</entry> <entry>Equality.</entry>
@ -183,7 +183,7 @@ weakest binding).</para>
<row> <row>
<entry>Inequality</entry> <entry>Inequality</entry>
<entry> <entry>
<replaceable>e1</replaceable> <literal>!=</literal> <replaceable>e2</replaceable> <emphasis>e1</emphasis> <literal>!=</literal> <emphasis>e2</emphasis>
</entry> </entry>
<entry>none</entry> <entry>none</entry>
<entry>Inequality.</entry> <entry>Inequality.</entry>
@ -191,28 +191,28 @@ weakest binding).</para>
</row> </row>
<row> <row>
<entry>Logical AND</entry> <entry>Logical AND</entry>
<entry><replaceable>e1</replaceable> <literal>&amp;&amp;</literal> <entry><emphasis>e1</emphasis> <literal>&amp;&amp;</literal>
<replaceable>e2</replaceable></entry> <emphasis>e2</emphasis></entry>
<entry>left</entry> <entry>left</entry>
<entry>Logical AND.</entry> <entry>Logical AND.</entry>
<entry>12</entry> <entry>12</entry>
</row> </row>
<row> <row>
<entry>Logical OR</entry> <entry>Logical OR</entry>
<entry><replaceable>e1</replaceable> <literal>||</literal> <entry><emphasis>e1</emphasis> <literal>||</literal>
<replaceable>e2</replaceable></entry> <emphasis>e2</emphasis></entry>
<entry>left</entry> <entry>left</entry>
<entry>Logical OR.</entry> <entry>Logical OR.</entry>
<entry>13</entry> <entry>13</entry>
</row> </row>
<row> <row>
<entry>Logical Implication</entry> <entry>Logical Implication</entry>
<entry><replaceable>e1</replaceable> <literal>-></literal> <entry><emphasis>e1</emphasis> <literal>-></literal>
<replaceable>e2</replaceable></entry> <emphasis>e2</emphasis></entry>
<entry>none</entry> <entry>none</entry>
<entry>Logical implication (equivalent to <entry>Logical implication (equivalent to
<literal>!<replaceable>e1</replaceable> || <literal>!<emphasis>e1</emphasis> ||
<replaceable>e2</replaceable></literal>).</entry> <emphasis>e2</emphasis></literal>).</entry>
<entry>14</entry> <entry>14</entry>
</row> </row>
</tbody> </tbody>

8
doc/manual/expressions/language-values.xml
View file

@ -30,7 +30,7 @@
<para>You can include the result of an expression into a string by <para>You can include the result of an expression into a string by
enclosing it in enclosing it in
<literal>${<replaceable>...</replaceable>}</literal>, a feature <literal>${<emphasis>...</emphasis>}</literal>, a feature
known as <emphasis>antiquotation</emphasis>. The enclosed known as <emphasis>antiquotation</emphasis>. The enclosed
expression must evaluate to something that can be coerced into a expression must evaluate to something that can be coerced into a
string (meaning that it must be a string, a path, or a string (meaning that it must be a string, a path, or a
@ -93,7 +93,7 @@ configureFlags = "
text on the initial line.</para> text on the initial line.</para>
<para>Antiquotation <para>Antiquotation
(<literal>${<replaceable>expr</replaceable>}</literal>) is (<literal>${<emphasis>expr</emphasis>}</literal>) is
supported in indented strings.</para> supported in indented strings.</para>
<para>Since <literal>${</literal> and <literal>''</literal> have <para>Since <literal>${</literal> and <literal>''</literal> have
@ -119,7 +119,7 @@ configureFlags = "
<programlisting> <programlisting>
stdenv.mkDerivation { stdenv.mkDerivation {
<replaceable>...</replaceable> <emphasis>...</emphasis>
postInstall = postInstall =
'' ''
mkdir $out/bin $out/etc mkdir $out/bin $out/etc
@ -127,7 +127,7 @@ stdenv.mkDerivation {
echo "Hello World" > $out/etc/foo.conf echo "Hello World" > $out/etc/foo.conf
${if enableBar then "cp bar $out/bin" else ""} ${if enableBar then "cp bar $out/bin" else ""}
''; '';
<replaceable>...</replaceable> <emphasis>...</emphasis>
} }
</programlisting> </programlisting>

2
doc/manual/expressions/simple-building-testing.xml
View file

@ -19,7 +19,7 @@ building path `/nix/store/632d2b22514d...-hello-2.1.1'
hello-2.1.1/ hello-2.1.1/
hello-2.1.1/intl/ hello-2.1.1/intl/
hello-2.1.1/intl/ChangeLog hello-2.1.1/intl/ChangeLog
<replaceable>...</replaceable> <emphasis>...</emphasis>
$ ls -l result $ ls -l result
lrwxrwxrwx ... 2006-09-29 10:43 result -> /nix/store/632d2b22514d...-hello-2.1.1 lrwxrwxrwx ... 2006-09-29 10:43 result -> /nix/store/632d2b22514d...-hello-2.1.1

10
doc/manual/installation/building-source.xml
View file

@ -10,7 +10,7 @@
following commands: following commands:
<screen> <screen>
$ ./configure <replaceable>options...</replaceable> $ ./configure <emphasis>options...</emphasis>
$ make $ make
$ make install</screen> $ make install</screen>
@ -26,16 +26,16 @@ $ ./bootstrap.sh</screen>
</para> </para>
<para>The installation path can be specified by passing the <para>The installation path can be specified by passing the
<option>--prefix=<replaceable>prefix</replaceable></option> to <option>--prefix=<emphasis>prefix</emphasis></option> to
<command>configure</command>. The default installation directory is <command>configure</command>. The default installation directory is
<filename>/usr/local</filename>. You can change this to any location <filename>/usr/local</filename>. You can change this to any location
you like. You must have write permission to the you like. You must have write permission to the
<replaceable>prefix</replaceable> path.</para> <emphasis>prefix</emphasis> path.</para>
<para>Nix keeps its <emphasis>store</emphasis> (the place where <para>Nix keeps its <emphasis>store</emphasis> (the place where
packages are stored) in <filename>/nix/store</filename> by default. packages are stored) in <filename>/nix/store</filename> by default.
This can be changed using This can be changed using
<option>--with-store-dir=<replaceable>path</replaceable></option>.</para> <option>--with-store-dir=<emphasis>path</emphasis></option>.</para>
<warning><para>It is best <emphasis>not</emphasis> to change the Nix <warning><para>It is best <emphasis>not</emphasis> to change the Nix
store from its default, since doing so makes it impossible to use store from its default, since doing so makes it impossible to use
@ -44,6 +44,6 @@ packages will need to be built from source.</para></warning>
<para>Nix keeps state (such as its database and log files) in <para>Nix keeps state (such as its database and log files) in
<filename>/nix/var</filename> by default. This can be changed using <filename>/nix/var</filename> by default. This can be changed using
<option>--localstatedir=<replaceable>path</replaceable></option>.</para> <option>--localstatedir=<emphasis>path</emphasis></option>.</para>
</section> </section>

6
doc/manual/installation/env-variables.xml
View file

@ -8,18 +8,18 @@
<para>To use Nix, some environment variables should be set. In <para>To use Nix, some environment variables should be set. In
particular, <literal>PATH</literal> should contain the directories particular, <literal>PATH</literal> should contain the directories
<filename><replaceable>prefix</replaceable>/bin</filename> and <filename><emphasis>prefix</emphasis>/bin</filename> and
<filename>~/.nix-profile/bin</filename>. The first directory contains <filename>~/.nix-profile/bin</filename>. The first directory contains
the Nix tools themselves, while <filename>~/.nix-profile</filename> is the Nix tools themselves, while <filename>~/.nix-profile</filename> is
a symbolic link to the current <emphasis>user environment</emphasis> a symbolic link to the current <emphasis>user environment</emphasis>
(an automatically generated package consisting of symlinks to (an automatically generated package consisting of symlinks to
installed packages). The simplest way to set the required environment installed packages). The simplest way to set the required environment
variables is to include the file variables is to include the file
<filename><replaceable>prefix</replaceable>/etc/profile.d/nix.sh</filename> <filename><emphasis>prefix</emphasis>/etc/profile.d/nix.sh</filename>
in your <filename>~/.profile</filename> (or similar), like this:</para> in your <filename>~/.profile</filename> (or similar), like this:</para>
<screen> <screen>
source <replaceable>prefix</replaceable>/etc/profile.d/nix.sh</screen> source <emphasis>prefix</emphasis>/etc/profile.d/nix.sh</screen>
<section xml:id="sec-nix-ssl-cert-file"> <section xml:id="sec-nix-ssl-cert-file">

2
doc/manual/installation/installing-binary.xml
View file

@ -421,7 +421,7 @@ LABEL=Nix\040Store /nix apfs rw,nobrowse
<para> <para>
NixOS.org hosts version-specific installation URLs for all Nix NixOS.org hosts version-specific installation URLs for all Nix
versions since 1.11.16, at versions since 1.11.16, at
<literal>https://releases.nixos.org/nix/nix-<replaceable>version</replaceable>/install</literal>. <literal>https://releases.nixos.org/nix/nix-<emphasis>version</emphasis>/install</literal>.
</para> </para>
<para> <para>

4
doc/manual/installation/single-user.xml
View file

@ -7,9 +7,9 @@
<title>Single-User Mode</title> <title>Single-User Mode</title>
<para>In single-user mode, all Nix operations that access the database <para>In single-user mode, all Nix operations that access the database
in <filename><replaceable>prefix</replaceable>/var/nix/db</filename> in <filename><emphasis>prefix</emphasis>/var/nix/db</filename>
or modify the Nix store in or modify the Nix store in
<filename><replaceable>prefix</replaceable>/store</filename> must be <filename><emphasis>prefix</emphasis>/store</filename> must be
performed under the user ID that owns those directories. This is performed under the user ID that owns those directories. This is
typically <systemitem class="username">root</systemitem>. (If you typically <systemitem class="username">root</systemitem>. (If you
install from RPM packages, that’s in fact the default ownership.) install from RPM packages, that’s in fact the default ownership.)

2
doc/manual/introduction/about-nix.xml
View file

@ -99,7 +99,7 @@ there after an upgrade. This means that you can <emphasis>roll
back</emphasis> to the old version:</para> back</emphasis> to the old version:</para>
<screen> <screen>
$ nix-env --upgrade <replaceable>some-packages</replaceable> $ nix-env --upgrade <emphasis>some-packages</emphasis>
$ nix-env --rollback $ nix-env --rollback
</screen> </screen>

2
doc/manual/introduction/quick-start.xml
View file

@ -33,7 +33,7 @@ docbook-xml-4.5
firefox-33.0.2 firefox-33.0.2
hello-2.9 hello-2.9
libxslt-1.1.28 libxslt-1.1.28
<replaceable>...</replaceable></screen> <emphasis>...</emphasis></screen>
</para></step> </para></step>

4
doc/manual/packages/basic-package-mgmt.xml
View file

@ -74,10 +74,10 @@ then you need to pass the path to your Nixpkgs tree using the
<option>-f</option> flag: <option>-f</option> flag:
<screen> <screen>
$ nix-env -qaf <replaceable>/path/to/nixpkgs</replaceable> $ nix-env -qaf <emphasis>/path/to/nixpkgs</emphasis>
</screen> </screen>
where <replaceable>/path/to/nixpkgs</replaceable> is where you’ve where <emphasis>/path/to/nixpkgs</emphasis> is where you’ve
unpacked or checked out Nixpkgs.</para> unpacked or checked out Nixpkgs.</para>
<para>You can select specific packages by name: <para>You can select specific packages by name:

2
doc/manual/packages/channels.xml
View file

@ -45,7 +45,7 @@ $ nix-channel --remove nixpkgs
$ nix-channel --update</screen> $ nix-channel --update</screen>
This downloads and unpacks the Nix expressions in every channel This downloads and unpacks the Nix expressions in every channel
(downloaded from <literal><replaceable>url</replaceable>/nixexprs.tar.bz2</literal>). (downloaded from <literal><emphasis>url</emphasis>/nixexprs.tar.bz2</literal>).
It also makes the union of each channel’s Nix expressions available by It also makes the union of each channel’s Nix expressions available by
default to <command>nix-env</command> operations (via the symlink default to <command>nix-env</command> operations (via the symlink
<filename>~/.nix-defexpr/channels</filename>). Consequently, you can <filename>~/.nix-defexpr/channels</filename>). Consequently, you can

4
doc/manual/packages/garbage-collector-roots.xml
View file

@ -8,7 +8,7 @@
<para>The roots of the garbage collector are all store paths to which <para>The roots of the garbage collector are all store paths to which
there are symlinks in the directory there are symlinks in the directory
<filename><replaceable>prefix</replaceable>/nix/var/nix/gcroots</filename>. <filename><emphasis>prefix</emphasis>/nix/var/nix/gcroots</filename>.
For instance, the following command makes the path For instance, the following command makes the path
<filename>/nix/store/d718ef...-foo</filename> a root of the collector: <filename>/nix/store/d718ef...-foo</filename> a root of the collector:
@ -20,7 +20,7 @@ That is, after this command, the garbage collector will not remove
dependencies.</para> dependencies.</para>
<para>Subdirectories of <para>Subdirectories of
<filename><replaceable>prefix</replaceable>/nix/var/nix/gcroots</filename> <filename><emphasis>prefix</emphasis>/nix/var/nix/gcroots</filename>
are also searched for symlinks. Symlinks to non-store paths are are also searched for symlinks. Symlinks to non-store paths are
followed and searched for roots, but symlinks to non-store paths followed and searched for roots, but symlinks to non-store paths
<emphasis>inside</emphasis> the paths reached in that way are not <emphasis>inside</emphasis> the paths reached in that way are not

2
doc/manual/packages/profiles.xml
View file

@ -118,7 +118,7 @@ can also see all available generations:
$ nix-env --list-generations</screen></para> $ nix-env --list-generations</screen></para>
<para>You generally wouldn’t have <para>You generally wouldn’t have
<filename>/nix/var/nix/profiles/<replaceable>some-profile</replaceable>/bin</filename> <filename>/nix/var/nix/profiles/<emphasis>some-profile</emphasis>/bin</filename>
in your <literal>PATH</literal>. Rather, there is a symlink in your <literal>PATH</literal>. Rather, there is a symlink
<filename>~/.nix-profile</filename> that points to your current <filename>~/.nix-profile</filename> that points to your current
profile. This means that you should put profile. This means that you should put

16
doc/manual/release-notes/rl-0.10.xml
View file

@ -46,9 +46,9 @@ irreversible.</para></warning>
<literal>\*</literal>.</para></listitem> <literal>\*</literal>.</para></listitem>
<listitem><para><literal>nix-env -i <listitem><para><literal>nix-env -i
<replaceable>pkgname</replaceable></literal> will now install <emphasis>pkgname</emphasis></literal> will now install
the highest available version of the highest available version of
<replaceable>pkgname</replaceable>, rather than installing all <emphasis>pkgname</emphasis>, rather than installing all
available versions (which would probably give collisions) available versions (which would probably give collisions)
(<literal>NIX-31</literal>).</para></listitem> (<literal>NIX-31</literal>).</para></listitem>
@ -85,7 +85,7 @@ irreversible.</para></warning>
"--with-freetype2-library=${freetype}/lib"</programlisting> "--with-freetype2-library=${freetype}/lib"</programlisting>
You can write arbitrary expressions within You can write arbitrary expressions within
<literal>${<replaceable>...</replaceable>}</literal>, not just <literal>${<emphasis>...</emphasis>}</literal>, not just
identifiers.</para></listitem> identifiers.</para></listitem>
<listitem><para>Multi-line string literals.</para></listitem> <listitem><para>Multi-line string literals.</para></listitem>
@ -163,7 +163,7 @@ irreversible.</para></warning>
attribute set are unique.) For instance, a quick way to perform a attribute set are unique.) For instance, a quick way to perform a
test build of a package in Nixpkgs is <literal>nix-build test build of a package in Nixpkgs is <literal>nix-build
pkgs/top-level/all-packages.nix -A pkgs/top-level/all-packages.nix -A
<replaceable>foo</replaceable></literal>. <literal>nix-env -q <emphasis>foo</emphasis></literal>. <literal>nix-env -q
--attr</literal> shows the attribute names corresponding to each --attr</literal> shows the attribute names corresponding to each
derivation.</para></listitem> derivation.</para></listitem>
@ -173,13 +173,13 @@ irreversible.</para></warning>
<command>nix-build</command> evaluates to a function whose arguments <command>nix-build</command> evaluates to a function whose arguments
all have default values, the function will be called automatically. all have default values, the function will be called automatically.
Also, the new command-line switch <option>--arg Also, the new command-line switch <option>--arg
<replaceable>name</replaceable> <emphasis>name</emphasis>
<replaceable>value</replaceable></option> can be used to specify <emphasis>value</emphasis></option> can be used to specify
function arguments on the command line.</para></listitem> function arguments on the command line.</para></listitem>
<listitem><para><literal>nix-install-package --url <listitem><para><literal>nix-install-package --url
<replaceable>URL</replaceable></literal> allows a package to be <emphasis>URL</emphasis></literal> allows a package to be
installed directly from the given URL.</para></listitem> installed directly from the given URL.</para></listitem>
@ -192,7 +192,7 @@ irreversible.</para></warning>
<listitem><para><literal>nix-build -o <listitem><para><literal>nix-build -o
<replaceable>symlink</replaceable></literal> allows the symlink to <emphasis>symlink</emphasis></literal> allows the symlink to
the build result to be named something other than the build result to be named something other than
<literal>result</literal>.</para></listitem> <literal>result</literal>.</para></listitem>

16
doc/manual/release-notes/rl-0.12.xml
View file

@ -59,17 +59,17 @@ $ rm __db* log.* derivers references referrers reserved validpaths DB_CONFIG</sc
<listitem><para>The garbage collector has a number of new options to <listitem><para>The garbage collector has a number of new options to
allow only some of the garbage to be deleted. The option allow only some of the garbage to be deleted. The option
<option>--max-freed <replaceable>N</replaceable></option> tells the <option>--max-freed <emphasis>N</emphasis></option> tells the
collector to stop after at least <replaceable>N</replaceable> bytes collector to stop after at least <emphasis>N</emphasis> bytes
have been deleted. The option <option>--max-links have been deleted. The option <option>--max-links
<replaceable>N</replaceable></option> tells it to stop after the <emphasis>N</emphasis></option> tells it to stop after the
link count on <filename>/nix/store</filename> has dropped below link count on <filename>/nix/store</filename> has dropped below
<replaceable>N</replaceable>. This is useful for very large Nix <emphasis>N</emphasis>. This is useful for very large Nix
stores on filesystems with a 32000 subdirectories limit (like stores on filesystems with a 32000 subdirectories limit (like
<literal>ext3</literal>). The option <option>--use-atime</option> <literal>ext3</literal>). The option <option>--use-atime</option>
causes store paths to be deleted in order of ascending last access causes store paths to be deleted in order of ascending last access
time. This allows non-recently used stuff to be deleted. The time. This allows non-recently used stuff to be deleted. The
option <option>--max-atime <replaceable>time</replaceable></option> option <option>--max-atime <emphasis>time</emphasis></option>
specifies an upper limit to the last accessed time of paths that may specifies an upper limit to the last accessed time of paths that may
be deleted. For instance, be deleted. For instance,
@ -119,7 +119,7 @@ the following paths will be downloaded/copied (30.02 MiB):
<listitem><para>@-patterns as in Haskell. For instance, in a <listitem><para>@-patterns as in Haskell. For instance, in a
function definition function definition
<programlisting>f = args @ {x, y, z}: <replaceable>...</replaceable>;</programlisting> <programlisting>f = args @ {x, y, z}: <emphasis>...</emphasis>;</programlisting>
<varname>args</varname> refers to the argument as a whole, which <varname>args</varname> refers to the argument as a whole, which
is further pattern-matched against the attribute set pattern is further pattern-matched against the attribute set pattern
@ -131,7 +131,7 @@ the following paths will be downloaded/copied (30.02 MiB):
takes <emphasis>at least</emphasis> the listed attributes, while takes <emphasis>at least</emphasis> the listed attributes, while
ignoring additional attributes. For instance, ignoring additional attributes. For instance,
<programlisting>{stdenv, fetchurl, fuse, ...}: <replaceable>...</replaceable></programlisting> <programlisting>{stdenv, fetchurl, fuse, ...}: <emphasis>...</emphasis></programlisting>
defines a function that accepts any attribute set that includes defines a function that accepts any attribute set that includes
at least the three listed attributes.</para></listitem> at least the three listed attributes.</para></listitem>
@ -163,7 +163,7 @@ the following paths will be downloaded/copied (30.02 MiB):
<command>nix-pack-closure</command> and <command>nix-pack-closure</command> and
<command>nix-unpack-closure</command>. You can do almost the same <command>nix-unpack-closure</command>. You can do almost the same
thing but much more efficiently by doing <literal>nix-store --export thing but much more efficiently by doing <literal>nix-store --export
$(nix-store -qR <replaceable>paths</replaceable>) > closure</literal> and $(nix-store -qR <emphasis>paths</emphasis>) > closure</literal> and
<literal>nix-store --import &lt; <literal>nix-store --import &lt;
closure</literal>.</para></listitem> closure</literal>.</para></listitem>

4
doc/manual/release-notes/rl-0.13.xml
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@ -95,9 +95,9 @@ features:</para>
<listitem> <listitem>
<para>The scoping rules for <literal>inherit <para>The scoping rules for <literal>inherit
(<replaceable>e</replaceable>) ...</literal> in recursive (<emphasis>e</emphasis>) ...</literal> in recursive
attribute sets have changed. The expression attribute sets have changed. The expression
<replaceable>e</replaceable> can now refer to the attributes <emphasis>e</emphasis> can now refer to the attributes
defined in the containing set.</para> defined in the containing set.</para>
</listitem> </listitem>

8
doc/manual/release-notes/rl-0.16.xml
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@ -27,14 +27,14 @@
2</command>), but this was not desirable because the number of 2</command>), but this was not desirable because the number of
actions to be performed in parallel was not configurable. Nix actions to be performed in parallel was not configurable. Nix
now has an option <option>--cores now has an option <option>--cores
<replaceable>N</replaceable></option> as well as a configuration <emphasis>N</emphasis></option> as well as a configuration
setting <varname>build-cores = setting <varname>build-cores =
<replaceable>N</replaceable></varname> that causes the <emphasis>N</emphasis></varname> that causes the
environment variable <literal>NIX_BUILD_CORES</literal> to be set to environment variable <literal>NIX_BUILD_CORES</literal> to be set to
<replaceable>N</replaceable> when the builder is invoked. The <emphasis>N</emphasis> when the builder is invoked. The
builder can use this at its discretion to perform a parallel builder can use this at its discretion to perform a parallel
build, e.g., by calling <command>make -j build, e.g., by calling <command>make -j
<replaceable>N</replaceable></command>. In Nixpkgs, this can be <emphasis>N</emphasis></command>. In Nixpkgs, this can be
enabled on a per-package basis by setting the derivation enabled on a per-package basis by setting the derivation
attribute <varname>enableParallelBuilding</varname> to attribute <varname>enableParallelBuilding</varname> to
<literal>true</literal>. <literal>true</literal>.

8
doc/manual/release-notes/rl-0.6.xml
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@ -91,10 +91,10 @@
<itemizedlist> <itemizedlist>
<listitem><para>New language construct: <literal>with <listitem><para>New language construct: <literal>with
<replaceable>E1</replaceable>; <emphasis>E1</emphasis>;
<replaceable>E2</replaceable></literal> brings all attributes <emphasis>E2</emphasis></literal> brings all attributes
defined in the attribute set <replaceable>E1</replaceable> in defined in the attribute set <emphasis>E1</emphasis> in
scope in <replaceable>E2</replaceable>.</para></listitem> scope in <emphasis>E2</emphasis>.</para></listitem>
<listitem><para>Added a <function>map</function> <listitem><para>Added a <function>map</function>
function.</para></listitem> function.</para></listitem>

4
doc/manual/release-notes/rl-0.8.xml
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@ -33,7 +33,7 @@ is too old (i.e., for Nix &lt;= 0.7)</screen>
then you should unsubscribe from the offending channel then you should unsubscribe from the offending channel
(<command>nix-channel --remove (<command>nix-channel --remove
<replaceable>URL</replaceable></command>; leave out <emphasis>URL</emphasis></command>; leave out
<literal>/MANIFEST</literal>), and subscribe to the same URL, with <literal>/MANIFEST</literal>), and subscribe to the same URL, with
<literal>channels</literal> replaced by <literal>channels-v3</literal> <literal>channels</literal> replaced by <literal>channels-v3</literal>
(e.g., <link (e.g., <link
@ -118,7 +118,7 @@ $ nix-store -q --referrers-closure \
subscribing to a channel.</para></listitem> subscribing to a channel.</para></listitem>
<listitem><para><command>nix-store -r <listitem><para><command>nix-store -r
<replaceable>PATHS</replaceable></command> now builds all the <emphasis>PATHS</emphasis></command> now builds all the
derivations PATHS in parallel. Previously it did them sequentially derivations PATHS in parallel. Previously it did them sequentially
(though exploiting possible parallelism between subderivations). (though exploiting possible parallelism between subderivations).
This is nice for build farms.</para></listitem> This is nice for build farms.</para></listitem>

4
doc/manual/release-notes/rl-1.1.xml
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@ -72,8 +72,8 @@
to get rid of the bootstrap binaries in the Nixpkgs source tree to get rid of the bootstrap binaries in the Nixpkgs source tree
and download them instead. You can use it by doing and download them instead. You can use it by doing
<literal>import &lt;nix/fetchurl.nix> { url = <literal>import &lt;nix/fetchurl.nix> { url =
<replaceable>url</replaceable>; sha256 = <emphasis>url</emphasis>; sha256 =
"<replaceable>hash</replaceable>"; }</literal>. (Shea Levy)</para> "<emphasis>hash</emphasis>"; }</literal>. (Shea Levy)</para>
</listitem> </listitem>
<listitem> <listitem>

8
doc/manual/release-notes/rl-1.11.xml
View file

@ -62,8 +62,8 @@ $ nix-prefetch-url -A nix-repl.src
<listitem> <listitem>
<para> <para>
The new flag <option>--option build-repeat The new flag <option>--option build-repeat
<replaceable>N</replaceable></option> will cause every build to <emphasis>N</emphasis></option> will cause every build to
be executed <replaceable>N</replaceable>+1 times. If the build be executed <emphasis>N</emphasis>+1 times. If the build
output differs between any round, the build is rejected, and the output differs between any round, the build is rejected, and the
output paths are not registered as valid. This is primarily output paths are not registered as valid. This is primarily
useful to verify build determinism. (We already had a useful to verify build determinism. (We already had a
@ -78,11 +78,11 @@ $ nix-prefetch-url -A nix-repl.src
<listitem> <listitem>
<para> <para>
The options <option>--check</option> and <option>--option The options <option>--check</option> and <option>--option
build-repeat <replaceable>N</replaceable></option>, if they build-repeat <emphasis>N</emphasis></option>, if they
detect a difference between two runs of the same derivation and detect a difference between two runs of the same derivation and
<option>-K</option> is given, will make the output of the other <option>-K</option> is given, will make the output of the other
run available under run available under
<filename><replaceable>store-path</replaceable>-check</filename>. This <filename><emphasis>store-path</emphasis>-check</filename>. This
makes it easier to investigate the non-determinism using tools makes it easier to investigate the non-determinism using tools
like <command>diffoscope</command>, e.g., like <command>diffoscope</command>, e.g.,

2
doc/manual/release-notes/rl-1.2.xml
View file

@ -56,7 +56,7 @@ outputs = [ "lib" "headers" "doc" ];
<literal>lib</literal>, <literal>headers</literal> and <literal>lib</literal>, <literal>headers</literal> and
<literal>doc</literal>. Other packages can refer to a specific <literal>doc</literal>. Other packages can refer to a specific
output by referring to output by referring to
<literal><replaceable>pkg</replaceable>.<replaceable>output</replaceable></literal>, <literal><emphasis>pkg</emphasis>.<emphasis>output</emphasis></literal>,
e.g. e.g.
<programlisting> <programlisting>
buildInputs = [ pkg.lib pkg.headers ]; buildInputs = [ pkg.lib pkg.headers ];

4
doc/manual/release-notes/rl-1.4.xml
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@ -20,8 +20,8 @@ xlink:href="https://github.com/NixOS/nix/commit/5526a282b5b44e9296e61e07d7d2626a
<function>builtins.hashString</function>.</para></listitem> <function>builtins.hashString</function>.</para></listitem>
<listitem><para>Build logs are now stored in <listitem><para>Build logs are now stored in
<filename>/nix/var/log/nix/drvs/<replaceable>XX</replaceable>/</filename>, <filename>/nix/var/log/nix/drvs/<emphasis>XX</emphasis>/</filename>,
where <replaceable>XX</replaceable> is the first two characters of where <emphasis>XX</emphasis> is the first two characters of
the derivation. This is useful on machines that keep a lot of build the derivation. This is useful on machines that keep a lot of build
logs (such as Hydra servers).</para></listitem> logs (such as Hydra servers).</para></listitem>

8
doc/manual/release-notes/rl-1.6.1.xml
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@ -19,15 +19,15 @@ are:</para>
<listitem> <listitem>
<para>Previously, Nix optimised expressions such as <para>Previously, Nix optimised expressions such as
<literal>"${<replaceable>expr</replaceable>}"</literal> to <literal>"${<emphasis>expr</emphasis>}"</literal> to
<replaceable>expr</replaceable>. Thus it neither checked whether <emphasis>expr</emphasis>. Thus it neither checked whether
<replaceable>expr</replaceable> could be coerced to a string, nor <emphasis>expr</emphasis> could be coerced to a string, nor
applied such coercions. This meant that applied such coercions. This meant that
<literal>"${123}"</literal> evaluatued to <literal>123</literal>, <literal>"${123}"</literal> evaluatued to <literal>123</literal>,
and <literal>"${./foo}"</literal> evaluated to and <literal>"${./foo}"</literal> evaluated to
<literal>./foo</literal> (even though <literal>./foo</literal> (even though
<literal>"${./foo} "</literal> evaluates to <literal>"${./foo} "</literal> evaluates to
<literal>"/nix/store/<replaceable>hash</replaceable>-foo "</literal>). <literal>"/nix/store/<emphasis>hash</emphasis>-foo "</literal>).
Nix now checks the type of antiquoted expressions and Nix now checks the type of antiquoted expressions and
applies coercions.</para> applies coercions.</para>
</listitem> </listitem>

12
doc/manual/release-notes/rl-1.7.xml
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@ -34,7 +34,7 @@ following new features:</para>
<command>download-via-ssh</command>, that fetches binaries from <command>download-via-ssh</command>, that fetches binaries from
remote machines via SSH. Specifying the flags <literal>--option remote machines via SSH. Specifying the flags <literal>--option
use-ssh-substituter true --option ssh-substituter-hosts use-ssh-substituter true --option ssh-substituter-hosts
<replaceable>user@hostname</replaceable></literal> will cause Nix <emphasis>user@hostname</emphasis></literal> will cause Nix
to download binaries from the specified machine, if it has to download binaries from the specified machine, if it has
them.</para> them.</para>
</listitem> </listitem>
@ -49,9 +49,9 @@ following new features:</para>
<screen> <screen>
$ nix-build '&lt;nixpkgs>' -A patchelf $ nix-build '&lt;nixpkgs>' -A patchelf
<replaceable>…</replaceable> <emphasis>…</emphasis>
$ nix-build '&lt;nixpkgs>' -A patchelf --check $ nix-build '&lt;nixpkgs>' -A patchelf --check
<replaceable>…</replaceable> <emphasis>…</emphasis>
error: derivation `/nix/store/1ipvxs…-patchelf-0.6' may not be deterministic: error: derivation `/nix/store/1ipvxs…-patchelf-0.6' may not be deterministic:
hash mismatch in output `/nix/store/4pc1dm…-patchelf-0.6.drv' hash mismatch in output `/nix/store/4pc1dm…-patchelf-0.6.drv'
</screen> </screen>
@ -173,11 +173,11 @@ $ nix-instantiate --eval '&lt;nixos>' -A 'config.systemd.units."nscd.service".te
<listitem> <listitem>
<para><command>nix-collect-garbage</command> has a new flag <para><command>nix-collect-garbage</command> has a new flag
<option>--delete-older-than</option> <option>--delete-older-than</option>
<replaceable>N</replaceable><literal>d</literal>, which deletes <emphasis>N</emphasis><literal>d</literal>, which deletes
all user environment generations older than all user environment generations older than
<replaceable>N</replaceable> days. Likewise, <command>nix-env <emphasis>N</emphasis> days. Likewise, <command>nix-env
--delete-generations</command> accepts a --delete-generations</command> accepts a
<replaceable>N</replaceable><literal>d</literal> age limit.</para> <emphasis>N</emphasis><literal>d</literal> age limit.</para>
</listitem> </listitem>
<listitem> <listitem>

4
doc/manual/release-notes/rl-1.8.xml
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@ -38,8 +38,8 @@ log-servers = http://hydra.nixos.org/log
</programlisting> </programlisting>
then it will try to get logs from then it will try to get logs from
<literal>http://hydra.nixos.org/log/<replaceable>base name of the <literal>http://hydra.nixos.org/log/<emphasis>base name of the
store path</replaceable></literal>. This allows you to do things like: store path</emphasis></literal>. This allows you to do things like:
<screen> <screen>
$ nix-store -l $(which xterm) $ nix-store -l $(which xterm)

12
doc/manual/release-notes/rl-2.0.xml
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@ -42,7 +42,7 @@
<para>The command <command>nix-push</command> has been removed as <para>The command <command>nix-push</command> has been removed as
part of the effort to eliminate Nix's dependency on Perl. You can part of the effort to eliminate Nix's dependency on Perl. You can
use <command>nix copy</command> instead, e.g. <literal>nix copy use <command>nix copy</command> instead, e.g. <literal>nix copy
--to file:///tmp/my-binary-cache <replaceable>paths…</replaceable></literal></para> --to file:///tmp/my-binary-cache <emphasis>paths…</emphasis></literal></para>
</listitem> </listitem>
<listitem> <listitem>
@ -136,8 +136,8 @@
http-connections 100</literal> you can write http-connections 100</literal> you can write
<literal>--http-connections 100</literal>. Boolean options can <literal>--http-connections 100</literal>. Boolean options can
be written as be written as
<literal>--<replaceable>foo</replaceable></literal> or <literal>--<emphasis>foo</emphasis></literal> or
<literal>--no-<replaceable>foo</replaceable></literal> <literal>--no-<emphasis>foo</emphasis></literal>
(e.g. <option>--no-auto-optimise-store</option>).</para> (e.g. <option>--no-auto-optimise-store</option>).</para>
</listitem> </listitem>
@ -551,7 +551,7 @@
is still supported for compatibility, but it is also possible to is still supported for compatibility, but it is also possible to
specify builders in <command>nix.conf</command> by setting the specify builders in <command>nix.conf</command> by setting the
option <literal>builders = option <literal>builders =
@<replaceable>path</replaceable></literal>.</para> @<emphasis>path</emphasis></literal>.</para>
</listitem> </listitem>
<listitem> <listitem>
@ -580,9 +580,9 @@
<listitem> <listitem>
<para>You can now use <para>You can now use
<uri>channel:<replaceable>channel-name</replaceable></uri> as a <uri>channel:<emphasis>channel-name</emphasis></uri> as a
short-hand for short-hand for
<uri>https://nixos.org/channels/<replaceable>channel-name</replaceable>/nixexprs.tar.xz</uri>. For <uri>https://nixos.org/channels/<emphasis>channel-name</emphasis>/nixexprs.tar.xz</uri>. For
example, <literal>nix-build channel:nixos-15.09 -A hello</literal> example, <literal>nix-build channel:nixos-15.09 -A hello</literal>
will build the GNU Hello package from the will build the GNU Hello package from the
<literal>nixos-15.09</literal> channel. In the future, this may <literal>nixos-15.09</literal> channel. In the future, this may

10
doc/manual/src/command-ref/conf-file.md
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@ -28,8 +28,8 @@ By default Nix reads settings from the following places:
The configuration files consist of `name = The configuration files consist of `name =
value` pairs, one per line. Other files can be included with a line like value` pairs, one per line. Other files can be included with a line like
`include `include
path`, where path is interpreted relative to the current conf file and a path`, where *path* is interpreted relative to the current conf file and
missing file is an error unless `!include` is used instead. Comments a missing file is an error unless `!include` is used instead. Comments
start with a `#` character. Here is an example configuration file: start with a `#` character. Here is an example configuration file:
keep-outputs = true # Nice for developers keep-outputs = true # Nice for developers
@ -216,7 +216,7 @@ The following settings are currently available:
- `hashed-mirrors` - `hashed-mirrors`
A list of web servers used by `builtins.fetchurl` to obtain files by A list of web servers used by `builtins.fetchurl` to obtain files by
hash. The default is `http://tarballs.nixos.org/`. Given a hash type hash. The default is `http://tarballs.nixos.org/`. Given a hash type
ht and a base-16 hash h, Nix will try to download the file from *ht* and a base-16 hash *h*, Nix will try to download the file from
`hashed-mirror/ht/h`. This allows files to be downloaded even if `hashed-mirror/ht/h`. This allows files to be downloaded even if
they have disappeared from their original URI. For example, given they have disappeared from their original URI. For example, given
the default mirror `http://tarballs.nixos.org/`, when building the the default mirror `http://tarballs.nixos.org/`, when building the
@ -504,8 +504,8 @@ The following settings are currently available:
A list of paths bind-mounted into Nix sandbox environments. You can A list of paths bind-mounted into Nix sandbox environments. You can
use the syntax `target=source` to mount a path in a different use the syntax `target=source` to mount a path in a different
location in the sandbox; for instance, `/bin=/nix-bin` will mount location in the sandbox; for instance, `/bin=/nix-bin` will mount
the path `/nix-bin` as `/bin` inside the sandbox. If source is the path `/nix-bin` as `/bin` inside the sandbox. If *source* is
followed by `?`, then it is not an error if source does not exist; followed by `?`, then it is not an error if *source* does not exist;
for example, `/dev/nvidiactl?` specifies that `/dev/nvidiactl` will for example, `/dev/nvidiactl?` specifies that `/dev/nvidiactl` will
only be mounted in the sandbox if it exists in the host filesystem. only be mounted in the sandbox if it exists in the host filesystem.

12
doc/manual/src/command-ref/nix-build.md
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@ -43,16 +43,16 @@ paths
# Description # Description
The `nix-build` command builds the derivations described by the Nix The `nix-build` command builds the derivations described by the Nix
expressions in paths. If the build succeeds, it places a symlink to the expressions in *paths*. If the build succeeds, it places a symlink to
result in the current directory. The symlink is called `result`. If the result in the current directory. The symlink is called `result`. If
there are multiple Nix expressions, or the Nix expressions evaluate to there are multiple Nix expressions, or the Nix expressions evaluate to
multiple derivations, multiple sequentially numbered symlinks are multiple derivations, multiple sequentially numbered symlinks are
created (`result`, `result-2`, and so on). created (`result`, `result-2`, and so on).
If no paths are specified, then `nix-build` will use `default.nix` in If no *paths* are specified, then `nix-build` will use `default.nix` in
the current directory, if it exists. the current directory, if it exists.
If an element of paths starts with `http://` or `https://`, it is If an element of *paths* starts with `http://` or `https://`, it is
interpreted as the URL of a tarball that will be downloaded and unpacked interpreted as the URL of a tarball that will be downloaded and unpacked
to a temporary location. The tarball must include a single top-level to a temporary location. The tarball must include a single top-level
directory containing at least a file named `default.nix`. directory containing at least a file named `default.nix`.
@ -83,9 +83,9 @@ All options not listed here are passed to `nix-store
- `--dry-run` - `--dry-run`
Show what store paths would be built or downloaded. Show what store paths would be built or downloaded.
- `--out-link` / `-o` outlink - `--out-link` / `-o` *outlink*
Change the name of the symlink to the output path created from Change the name of the symlink to the output path created from
`result` to outlink. `result` to *outlink*.
The following common options are supported: The following common options are supported:

21
doc/manual/src/command-ref/nix-channel.md
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@ -42,25 +42,26 @@ To see the list of official NixOS channels, visit
This command has the following operations: This command has the following operations:
- `--add` url \[name\] - `--add` *url* \[*name*\]
Adds a channel named name with URL url to the list of subscribed Adds a channel named *name* with URL *url* to the list of subscribed
channels. If name is omitted, it defaults to the last component of channels. If *name* is omitted, it defaults to the last component of
url, with the suffixes `-stable` or `-unstable` removed. *url*, with the suffixes `-stable` or `-unstable` removed.
- `--remove` name - `--remove` *name*
Removes the channel named name from the list of subscribed channels. Removes the channel named *name* from the list of subscribed
channels.
- `--list` - `--list`
Prints the names and URLs of all subscribed channels on standard Prints the names and URLs of all subscribed channels on standard
output. output.
- `--update` \[names…\] - `--update` \[*names*…\]
Downloads the Nix expressions of all subscribed channels (or only Downloads the Nix expressions of all subscribed channels (or only
those included in names if specified) and makes them the default for those included in *names* if specified) and makes them the default
`nix-env` operations (by symlinking them from the directory for `nix-env` operations (by symlinking them from the directory
`~/.nix-defexpr`). `~/.nix-defexpr`).
- `--rollback` \[generation\] - `--rollback` \[*generation*\]
Reverts the previous call to `nix-channel Reverts the previous call to `nix-channel
--update`. Optionally, you can specify a specific channel generation --update`. Optionally, you can specify a specific channel generation
number to restore. number to restore.

2
doc/manual/src/command-ref/nix-collect-garbage.md
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@ -33,7 +33,7 @@ additional options: `-d` (`--delete-old`), which deletes all old
generations of all profiles in `/nix/var/nix/profiles` by invoking generations of all profiles in `/nix/var/nix/profiles` by invoking
`nix-env --delete-generations old` on all profiles (of course, this `nix-env --delete-generations old` on all profiles (of course, this
makes rollbacks to previous configurations impossible); and makes rollbacks to previous configurations impossible); and
`--delete-older-than` period, where period is a value such as `30d`, `--delete-older-than` *period*, where period is a value such as `30d`,
which deletes all generations older than the specified number of days in which deletes all generations older than the specified number of days in
all profiles in `/nix/var/nix/profiles` (except for the generations that all profiles in `/nix/var/nix/profiles` (except for the generations that
were active at that point in time). were active at that point in time).

61
doc/manual/src/command-ref/nix-env.md
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@ -98,7 +98,7 @@ This section lists the options that are common to all operations. These
options are allowed for every subcommand, though they may not always options are allowed for every subcommand, though they may not always
have an effect. See also [???](#sec-common-options). have an effect. See also [???](#sec-common-options).
- `--file` / `-f` path - `--file` / `-f` *path*
Specifies the Nix expression (designated below as the *active Nix Specifies the Nix expression (designated below as the *active Nix
expression*) used by the `--install`, `--upgrade`, and `--query expression*) used by the `--install`, `--upgrade`, and `--query
--available` operations to obtain derivations. The default is --available` operations to obtain derivations. The default is
@ -109,7 +109,7 @@ have an effect. See also [???](#sec-common-options).
unpacked to a temporary location. The tarball must include a single unpacked to a temporary location. The tarball must include a single
top-level directory containing at least a file named `default.nix`. top-level directory containing at least a file named `default.nix`.
- `--profile` / `-p` path - `--profile` / `-p` *path*
Specifies the profile to be used by those operations that operate on Specifies the profile to be used by those operations that operate on
a profile (designated below as the *active profile*). A profile is a a profile (designated below as the *active profile*). A profile is a
sequence of user environments called *generations*, one of which is sequence of user environments called *generations*, one of which is
@ -125,10 +125,10 @@ have an effect. See also [???](#sec-common-options).
[substituted](#gloss-substitute) (i.e., downloaded) and which paths [substituted](#gloss-substitute) (i.e., downloaded) and which paths
will be built from source (because no substitute is available). will be built from source (because no substitute is available).
- `--system-filter` system - `--system-filter` *system*
By default, operations such as `--query By default, operations such as `--query
--available` show derivations matching any platform. This option --available` show derivations matching any platform. This option
allows you to use derivations for the specified platform system. allows you to use derivations for the specified platform *system*.
<!-- end list --> <!-- end list -->
@ -200,17 +200,17 @@ args
The install operation creates a new user environment, based on the The install operation creates a new user environment, based on the
current generation of the active profile, to which a set of store paths current generation of the active profile, to which a set of store paths
described by args is added. The arguments args map to store paths in a described by *args* is added. The arguments *args* map to store paths in
number of possible ways: a number of possible ways:
- By default, args is a set of derivation names denoting derivations - By default, *args* is a set of derivation names denoting derivations
in the active Nix expression. These are realised, and the resulting in the active Nix expression. These are realised, and the resulting
output paths are installed. Currently installed derivations with a output paths are installed. Currently installed derivations with a
name equal to the name of a derivation being added are removed name equal to the name of a derivation being added are removed
unless the option `--preserve-installed` is specified. unless the option `--preserve-installed` is specified.
If there are multiple derivations matching a name in args that have If there are multiple derivations matching a name in *args* that
the same name (e.g., `gcc-3.3.6` and `gcc-4.1.1`), then the have the same name (e.g., `gcc-3.3.6` and `gcc-4.1.1`), then the
derivation with the highest *priority* is used. A derivation can derivation with the highest *priority* is used. A derivation can
define a priority by declaring the `meta.priority` attribute. This define a priority by declaring the `meta.priority` attribute. This
attribute should be a number, with a higher value denoting a lower attribute should be a number, with a higher value denoting a lower
@ -230,22 +230,23 @@ number of possible ways:
unambiguous. To find out the attribute paths of available packages, unambiguous. To find out the attribute paths of available packages,
use `nix-env -qaP`. use `nix-env -qaP`.
- If `--from-profile` path is given, args is a set of names denoting - If `--from-profile` *path* is given, *args* is a set of names
installed store paths in the profile path. This is an easy way to denoting installed store paths in the profile *path*. This is an
copy user environment elements from one profile to another. easy way to copy user environment elements from one profile to
another.
- If `--from-expression` is given, args are Nix - If `--from-expression` is given, *args* are Nix
[functions](#ss-functions) that are called with the active Nix [functions](#ss-functions) that are called with the active Nix
expression as their single argument. The derivations returned by expression as their single argument. The derivations returned by
those function calls are installed. This allows derivations to be those function calls are installed. This allows derivations to be
specified in an unambiguous way, which is necessary if there are specified in an unambiguous way, which is necessary if there are
multiple derivations with the same name. multiple derivations with the same name.
- If args are store derivations, then these are - If *args* are store derivations, then these are
[realised](#rsec-nix-store-realise), and the resulting output paths [realised](#rsec-nix-store-realise), and the resulting output paths
are installed. are installed.
- If args are store paths that are not store derivations, then these - If *args* are store paths that are not store derivations, then these
are [realised](#rsec-nix-store-realise) and installed. are [realised](#rsec-nix-store-realise) and installed.
- By default all outputs are installed for each derivation. That can - By default all outputs are installed for each derivation. That can
@ -359,12 +360,12 @@ args
The upgrade operation creates a new user environment, based on the The upgrade operation creates a new user environment, based on the
current generation of the active profile, in which all store paths are current generation of the active profile, in which all store paths are
replaced for which there are newer versions in the set of paths replaced for which there are newer versions in the set of paths
described by args. Paths for which there are no newer versions are left described by *args*. Paths for which there are no newer versions are
untouched; this is not an error. It is also not an error if an element left untouched; this is not an error. It is also not an error if an
of args matches no installed derivations. element of *args* matches no installed derivations.
For a description of how args is mapped to a set of store paths, see For a description of how *args* is mapped to a set of store paths, see
[`--install`](#rsec-nix-env-install). If args describes multiple store [`--install`](#rsec-nix-env-install). If *args* describes multiple store
paths with the same symbolic name, only the one with the highest version paths with the same symbolic name, only the one with the highest version
is installed. is installed.
@ -462,7 +463,7 @@ drvnames
The uninstall operation creates a new user environment, based on the The uninstall operation creates a new user environment, based on the
current generation of the active profile, from which the store paths current generation of the active profile, from which the store paths
designated by the symbolic names names are removed. designated by the symbolic names *names* are removed.
## Examples ## Examples
@ -629,7 +630,7 @@ The query operation displays information about either the store paths
that are installed in the current generation of the active profile that are installed in the current generation of the active profile
(`--installed`), or the derivations that are available for installation (`--installed`), or the derivations that are available for installation
in the active Nix expression (`--available`). It only prints information in the active Nix expression (`--available`). It only prints information
about derivations whose symbolic name matches one of names. about derivations whose symbolic name matches one of *names*.
The derivations are sorted by their `name` attributes. The derivations are sorted by their `name` attributes.
@ -696,14 +697,14 @@ derivation is shown unless `--no-name` is specified.
upgrades for installed packages are available in a Nix expression. A upgrades for installed packages are available in a Nix expression. A
column is added with the following meaning: column is added with the following meaning:
- `<` version - `<` *version*
A newer version of the package is available or installed. A newer version of the package is available or installed.
- `=` version - `=` *version*
At most the same version of the package is available or At most the same version of the package is available or
installed. installed.
- `>` version - `>` *version*
Only older versions of the package are available or installed. Only older versions of the package are available or installed.
- `- ?` - `- ?`
@ -806,8 +807,8 @@ path
## Description ## Description
This operation makes path the current profile for the user. That is, the This operation makes *path* the current profile for the user. That is,
symlink `~/.nix-profile` is made to point to path. the symlink `~/.nix-profile` is made to point to *path*.
## Examples ## Examples
@ -882,9 +883,9 @@ generation
## Description ## Description
This operation makes generation number generation the current generation This operation makes generation number *generation* the current
of the active profile. That is, if the `profile` is the path to the generation of the active profile. That is, if the `profile` is the path
active profile, then the symlink `profile` is made to point to to the active profile, then the symlink `profile` is made to point to
`profile-generation-link`, which is in turn a symlink to the actual user `profile-generation-link`, which is in turn a symlink to the actual user
environment in the Nix store. environment in the Nix store.

14
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@ -37,7 +37,7 @@ hash
# Description # Description
The command `nix-hash` computes the cryptographic hash of the contents The command `nix-hash` computes the cryptographic hash of the contents
of each path and prints it on standard output. By default, it computes of each *path* and prints it on standard output. By default, it computes
an MD5 hash, but other hash algorithms are available as well. The hash an MD5 hash, but other hash algorithms are available as well. The hash
is printed in hexadecimal. To generate the same hash as is printed in hexadecimal. To generate the same hash as
`nix-prefetch-url` you have to specify multiple arguments, see below for `nix-prefetch-url` you have to specify multiple arguments, see below for
@ -55,9 +55,9 @@ path | md5sum`.
- `--flat` - `--flat`
Print the cryptographic hash of the contents of each regular file Print the cryptographic hash of the contents of each regular file
path. That is, do not compute the hash over the dump of path. The *path*. That is, do not compute the hash over the dump of *path*.
result is identical to that produced by the GNU commands `md5sum` The result is identical to that produced by the GNU commands
and `sha1sum`. `md5sum` and `sha1sum`.
- `--base32` - `--base32`
Print the hash in a base-32 representation rather than hexadecimal. Print the hash in a base-32 representation rather than hexadecimal.
@ -67,17 +67,17 @@ path | md5sum`.
- `--truncate` - `--truncate`
Truncate hashes longer than 160 bits (such as SHA-256) to 160 bits. Truncate hashes longer than 160 bits (such as SHA-256) to 160 bits.
- `--type` hashAlgo - `--type` *hashAlgo*
Use the specified cryptographic hash algorithm, which can be one of Use the specified cryptographic hash algorithm, which can be one of
`md5`, `sha1`, and `sha256`. `md5`, `sha1`, and `sha256`.
- `--to-base16` - `--to-base16`
Don’t hash anything, but convert the base-32 hash representation Don’t hash anything, but convert the base-32 hash representation
hash to hexadecimal. *hash* to hexadecimal.
- `--to-base32` - `--to-base32`
Don’t hash anything, but convert the hexadecimal hash representation Don’t hash anything, but convert the hexadecimal hash representation
hash to base-32. *hash* to base-32.
# Examples # Examples

8
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@ -56,19 +56,19 @@ files
The command `nix-instantiate` generates [store The command `nix-instantiate` generates [store
derivations](#gloss-derivation) from (high-level) Nix expressions. It derivations](#gloss-derivation) from (high-level) Nix expressions. It
evaluates the Nix expressions in each of files (which defaults to evaluates the Nix expressions in each of *files* (which defaults to
./default.nix). Each top-level expression should evaluate to a *./default.nix*). Each top-level expression should evaluate to a
derivation, a list of derivations, or a set of derivations. The paths of derivation, a list of derivations, or a set of derivations. The paths of
the resulting store derivations are printed on standard output. the resulting store derivations are printed on standard output.
If files is the character `-`, then a Nix expression will be read from If *files* is the character `-`, then a Nix expression will be read from
standard input. standard input.
See also [???](#sec-common-options) for a list of common options. See also [???](#sec-common-options) for a list of common options.
# Options # Options
- `--add-root` path; `--indirect` - `--add-root` *path*; `--indirect`
See the [corresponding options](#opt-add-root) in `nix-store`. See the [corresponding options](#opt-add-root) in `nix-store`.
- `--parse` - `--parse`

22
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@ -31,9 +31,9 @@ hash
# Description # Description
The command `nix-prefetch-url` downloads the file referenced by the URL The command `nix-prefetch-url` downloads the file referenced by the URL
url, prints its cryptographic hash, and copies it into the Nix store. *url*, prints its cryptographic hash, and copies it into the Nix store.
The file name in the store is `hash-baseName`, where baseName is The file name in the store is `hash-baseName`, where *baseName* is
everything following the final slash in url. everything following the final slash in *url*.
This command is just a convenience for Nix expression writers. Often a This command is just a convenience for Nix expression writers. Often a
Nix expression fetches some source distribution from the network using Nix expression fetches some source distribution from the network using
@ -44,10 +44,10 @@ again when you build your Nix expression. Since `fetchurl` uses the same
name for the downloaded file as `nix-prefetch-url`, the redundant name for the downloaded file as `nix-prefetch-url`, the redundant
download can be avoided. download can be avoided.
If hash is specified, then a download is not performed if the Nix store If *hash* is specified, then a download is not performed if the Nix
already contains a file with the same hash and base name. Otherwise, the store already contains a file with the same hash and base name.
file is downloaded, and an error is signaled if the actual hash of the Otherwise, the file is downloaded, and an error is signaled if the
file does not match the specified hash. actual hash of the file does not match the specified hash.
This command prints the hash on standard output. Additionally, if the This command prints the hash on standard output. Additionally, if the
option `--print-path` is used, the path of the downloaded file in the option `--print-path` is used, the path of the downloaded file in the
@ -55,7 +55,7 @@ Nix store is also printed.
# Options # Options
- `--type` hashAlgo - `--type` *hashAlgo*
Use the specified cryptographic hash algorithm, which can be one of Use the specified cryptographic hash algorithm, which can be one of
`md5`, `sha1`, and `sha256`. `md5`, `sha1`, and `sha256`.
@ -67,10 +67,10 @@ Nix store is also printed.
result to the Nix store. The resulting hash can be used with result to the Nix store. The resulting hash can be used with
functions such as Nixpkgs’s `fetchzip` or `fetchFromGitHub`. functions such as Nixpkgs’s `fetchzip` or `fetchFromGitHub`.
- `--name` name - `--name` *name*
Override the name of the file in the Nix store. By default, this is Override the name of the file in the Nix store. By default, this is
`hash-basename`, where basename is the last component of url. `hash-basename`, where *basename* is the last component of *url*.
Overriding the name is necessary when basename contains characters Overriding the name is necessary when *basename* contains characters
that are not allowed in Nix store paths. that are not allowed in Nix store paths.
# Examples # Examples

30
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@ -61,14 +61,14 @@ path
The command `nix-shell` will build the dependencies of the specified The command `nix-shell` will build the dependencies of the specified
derivation, but not the derivation itself. It will then start an derivation, but not the derivation itself. It will then start an
interactive shell in which all environment variables defined by the interactive shell in which all environment variables defined by the
derivation path have been set to their corresponding values, and the derivation *path* have been set to their corresponding values, and the
script `$stdenv/setup` has been sourced. This is useful for reproducing script `$stdenv/setup` has been sourced. This is useful for reproducing
the environment of a derivation for development. the environment of a derivation for development.
If path is not given, `nix-shell` defaults to `shell.nix` if it exists, If *path* is not given, `nix-shell` defaults to `shell.nix` if it
and `default.nix` otherwise. exists, and `default.nix` otherwise.
If path starts with `http://` or `https://`, it is interpreted as the If *path* starts with `http://` or `https://`, it is interpreted as the
URL of a tarball that will be downloaded and unpacked to a temporary URL of a tarball that will be downloaded and unpacked to a temporary
location. The tarball must include a single top-level directory location. The tarball must include a single top-level directory
containing at least a file named `default.nix`. containing at least a file named `default.nix`.
@ -91,8 +91,8 @@ All options not listed here are passed to `nix-store
--realise`, except for `--arg` and `--attr` / `-A` which are passed to --realise`, except for `--arg` and `--attr` / `-A` which are passed to
`nix-instantiate`. See also [???](#sec-common-options). `nix-instantiate`. See also [???](#sec-common-options).
- `--command` cmd - `--command` *cmd*
In the environment of the derivation, run the shell command cmd. In the environment of the derivation, run the shell command *cmd*.
This command is executed in an interactive shell. (Use `--run` to This command is executed in an interactive shell. (Use `--run` to
use a non-interactive shell instead.) However, a call to `exit` is use a non-interactive shell instead.) However, a call to `exit` is
implicitly added to the command, so the shell will exit after implicitly added to the command, so the shell will exit after
@ -102,14 +102,14 @@ All options not listed here are passed to `nix-store
interactive shell. This can be useful for doing any additional interactive shell. This can be useful for doing any additional
initialisation. initialisation.
- `--run` cmd - `--run` *cmd*
Like `--command`, but executes the command in a non-interactive Like `--command`, but executes the command in a non-interactive
shell. This means (among other things) that if you hit Ctrl-C while shell. This means (among other things) that if you hit Ctrl-C while
the command is running, the shell exits. the command is running, the shell exits.
- `--exclude` regexp - `--exclude` *regexp*
Do not build any dependencies whose store path matches the regular Do not build any dependencies whose store path matches the regular
expression regexp. This option may be specified multiple times. expression *regexp*. This option may be specified multiple times.
- `--pure` - `--pure`
If this flag is specified, the environment is almost entirely If this flag is specified, the environment is almost entirely
@ -120,19 +120,19 @@ All options not listed here are passed to `nix-store
installation) `/etc/bashrc` are still sourced, so any variables set installation) `/etc/bashrc` are still sourced, so any variables set
there will affect the interactive shell. there will affect the interactive shell.
- `--packages` / `-p` packages… - `--packages` / `-p` *packages*…
Set up an environment in which the specified packages are present. Set up an environment in which the specified packages are present.
The command line arguments are interpreted as attribute names inside The command line arguments are interpreted as attribute names inside
the Nix Packages collection. Thus, `nix-shell -p libjpeg openjdk` the Nix Packages collection. Thus, `nix-shell -p libjpeg openjdk`
will start a shell in which the packages denoted by the attribute will start a shell in which the packages denoted by the attribute
names `libjpeg` and `openjdk` are present. names `libjpeg` and `openjdk` are present.
- `-i` interpreter - `-i` *interpreter*
The chained script interpreter to be invoked by `nix-shell`. Only The chained script interpreter to be invoked by `nix-shell`. Only
applicable in `#!`-scripts (described applicable in `#!`-scripts (described
[below](#ssec-nix-shell-shebang)). [below](#ssec-nix-shell-shebang)).
- `--keep` name - `--keep` *name*
When a `--pure` shell is started, keep the listed environment When a `--pure` shell is started, keep the listed environment
variables. variables.
@ -199,10 +199,10 @@ done by starting the script with the following lines:
#! /usr/bin/env nix-shell #! /usr/bin/env nix-shell
#! nix-shell -i real-interpreter -p packages #! nix-shell -i real-interpreter -p packages
where real-interpreter is the “real” script interpreter that will be where *real-interpreter* is the “real” script interpreter that will be
invoked by `nix-shell` after it has obtained the dependencies and invoked by `nix-shell` after it has obtained the dependencies and
initialised the environment, and packages are the attribute names of the initialised the environment, and *packages* are the attribute names of
dependencies in Nixpkgs. the dependencies in Nixpkgs.
The lines starting with `#! nix-shell` specify `nix-shell` options (see The lines starting with `#! nix-shell` specify `nix-shell` options (see
above). Note that you cannot write `#! /usr/bin/env nix-shell -i ...` above). Note that you cannot write `#! /usr/bin/env nix-shell -i ...`

80
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@ -37,10 +37,10 @@ options are allowed for every subcommand, though they may not always
have an effect. See also [???](#sec-common-options) for a list of common have an effect. See also [???](#sec-common-options) for a list of common
options. options.
- `--add-root` path - `--add-root` *path*
Causes the result of a realisation (`--realise` and Causes the result of a realisation (`--realise` and
`--force-realise`) to be registered as a root of the garbage `--force-realise`) to be registered as a root of the garbage
collector(see [???](#ssec-gc-roots)). The root is stored in path, collector(see [???](#ssec-gc-roots)). The root is stored in *path*,
which must be inside a directory that is scanned for roots by the which must be inside a directory that is scanned for roots by the
garbage collector (i.e., typically in a subdirectory of garbage collector (i.e., typically in a subdirectory of
`/nix/var/nix/gcroots/`) *unless* the `--indirect` flag is used. `/nix/var/nix/gcroots/`) *unless* the `--indirect` flag is used.
@ -56,8 +56,8 @@ options.
result in the current directory; such a build result should not be result in the current directory; such a build result should not be
garbage-collected unless the symlink is removed. garbage-collected unless the symlink is removed.
The `--indirect` flag causes a uniquely named symlink to path to be The `--indirect` flag causes a uniquely named symlink to *path* to
stored in `/nix/var/nix/gcroots/auto/`. For instance, be stored in `/nix/var/nix/gcroots/auto/`. For instance,
$ nix-store --add-root /home/eelco/bla/result --indirect -r ... $ nix-store --add-root /home/eelco/bla/result --indirect -r ...
@ -262,10 +262,11 @@ The following suboperations may be specified:
By default, all unreachable paths are deleted. The following options By default, all unreachable paths are deleted. The following options
control what gets deleted and in what order: control what gets deleted and in what order:
- `--max-freed` bytes - `--max-freed` *bytes*
Keep deleting paths until at least bytes bytes have been deleted, Keep deleting paths until at least *bytes* bytes have been deleted,
then stop. The argument bytes can be followed by the multiplicative then stop. The argument *bytes* can be followed by the
suffix `K`, `M`, `G` or `T`, denoting KiB, MiB, GiB or TiB units. multiplicative suffix `K`, `M`, `G` or `T`, denoting KiB, MiB, GiB
or TiB units.
The behaviour of the collector is also influenced by the The behaviour of the collector is also influenced by the
[`keep-outputs`](#conf-keep-outputs) and [`keep-outputs`](#conf-keep-outputs) and
@ -303,7 +304,7 @@ paths
## Description ## Description
The operation `--delete` deletes the store paths paths from the Nix The operation `--delete` deletes the store paths *paths* from the Nix
store, but only if it is safe to do so; that is, when the path is not store, but only if it is safe to do so; that is, when the path is not
reachable from a root of the garbage collector. This means that you can reachable from a root of the garbage collector. This means that you can
only delete paths that would also be deleted by `nix-store --gc`. Thus, only delete paths that would also be deleted by `nix-store --gc`. Thus,
@ -379,7 +380,7 @@ The operation `--query` displays various bits of information about the
store paths . The queries are described below. At most one query can be store paths . The queries are described below. At most one query can be
specified. The default query is `--outputs`. specified. The default query is `--outputs`.
The paths paths may also be symlinks from outside of the Nix store, to The paths *paths* may also be symlinks from outside of the Nix store, to
the Nix store. In that case, the query is applied to the target of the the Nix store. In that case, the query is applied to the target of the
symlink. symlink.
@ -397,11 +398,11 @@ symlink.
- `--outputs` - `--outputs`
Prints out the [output paths](#gloss-output-path) of the store Prints out the [output paths](#gloss-output-path) of the store
derivations paths. These are the paths that will be produced when derivations *paths*. These are the paths that will be produced when
the derivation is built. the derivation is built.
- `--requisites`; `-R` - `--requisites`; `-R`
Prints out the [closure](#gloss-closure) of the store path paths. Prints out the [closure](#gloss-closure) of the store path *paths*.
This query has one option: This query has one option:
@ -419,29 +420,30 @@ symlink.
- `--references` - `--references`
Prints the set of [references](#gloss-reference) of the store paths Prints the set of [references](#gloss-reference) of the store paths
paths, that is, their immediate dependencies. (For *all* *paths*, that is, their immediate dependencies. (For *all*
dependencies, use `--requisites`.) dependencies, use `--requisites`.)
- `--referrers` - `--referrers`
Prints the set of *referrers* of the store paths paths, that is, the Prints the set of *referrers* of the store paths *paths*, that is,
store paths currently existing in the Nix store that refer to one of the store paths currently existing in the Nix store that refer to
paths. Note that contrary to the references, the set of referrers is one of *paths*. Note that contrary to the references, the set of
not constant; it can change as store paths are added or removed. referrers is not constant; it can change as store paths are added or
removed.
- `--referrers-closure` - `--referrers-closure`
Prints the closure of the set of store paths paths under the Prints the closure of the set of store paths *paths* under the
referrers relation; that is, all store paths that directly or referrers relation; that is, all store paths that directly or
indirectly refer to one of paths. These are all the path currently indirectly refer to one of *paths*. These are all the path currently
in the Nix store that are dependent on paths. in the Nix store that are dependent on *paths*.
- `--deriver`; `-d` - `--deriver`; `-d`
Prints the [deriver](#gloss-deriver) of the store paths paths. If Prints the [deriver](#gloss-deriver) of the store paths *paths*. If
the path has no deriver (e.g., if it is a source file), or if the the path has no deriver (e.g., if it is a source file), or if the
deriver is not known (e.g., in the case of a binary-only deriver is not known (e.g., in the case of a binary-only
deployment), the string `unknown-deriver` is printed. deployment), the string `unknown-deriver` is printed.
- `--graph` - `--graph`
Prints the references graph of the store paths paths in the format Prints the references graph of the store paths *paths* in the format
of the `dot` tool of AT\&T's [Graphviz of the `dot` tool of AT\&T's [Graphviz
package](http://www.graphviz.org/). This can be used to visualise package](http://www.graphviz.org/). This can be used to visualise
dependency graphs. To obtain a build-time dependency graph, apply dependency graphs. To obtain a build-time dependency graph, apply
@ -449,40 +451,40 @@ symlink.
apply it to an output path. apply it to an output path.
- `--tree` - `--tree`
Prints the references graph of the store paths paths as a nested Prints the references graph of the store paths *paths* as a nested
ASCII tree. References are ordered by descending closure size; this ASCII tree. References are ordered by descending closure size; this
tends to flatten the tree, making it more readable. The query only tends to flatten the tree, making it more readable. The query only
recurses into a store path when it is first encountered; this recurses into a store path when it is first encountered; this
prevents a blowup of the tree representation of the graph. prevents a blowup of the tree representation of the graph.
- `--graphml` - `--graphml`
Prints the references graph of the store paths paths in the Prints the references graph of the store paths *paths* in the
[GraphML](http://graphml.graphdrawing.org/) file format. This can be [GraphML](http://graphml.graphdrawing.org/) file format. This can be
used to visualise dependency graphs. To obtain a build-time used to visualise dependency graphs. To obtain a build-time
dependency graph, apply this to a store derivation. To obtain a dependency graph, apply this to a store derivation. To obtain a
runtime dependency graph, apply it to an output path. runtime dependency graph, apply it to an output path.
- `--binding` name; `-b` name - `--binding` *name*; `-b` *name*
Prints the value of the attribute name (i.e., environment variable) Prints the value of the attribute *name* (i.e., environment
of the store derivations paths. It is an error for a derivation to variable) of the store derivations *paths*. It is an error for a
not have the specified attribute. derivation to not have the specified attribute.
- `--hash` - `--hash`
Prints the SHA-256 hash of the contents of the store paths paths Prints the SHA-256 hash of the contents of the store paths *paths*
(that is, the hash of the output of `nix-store --dump` on the given (that is, the hash of the output of `nix-store --dump` on the given
paths). Since the hash is stored in the Nix database, this is a fast paths). Since the hash is stored in the Nix database, this is a fast
operation. operation.
- `--size` - `--size`
Prints the size in bytes of the contents of the store paths paths — Prints the size in bytes of the contents of the store paths *paths*
to be precise, the size of the output of `nix-store --dump` on the — to be precise, the size of the output of `nix-store --dump` on
given paths. Note that the actual disk space required by the store the given paths. Note that the actual disk space required by the
paths may be higher, especially on filesystems with large cluster store paths may be higher, especially on filesystems with large
sizes. cluster sizes.
- `--roots` - `--roots`
Prints the garbage collector roots that point, directly or Prints the garbage collector roots that point, directly or
indirectly, at the store paths paths. indirectly, at the store paths *paths*.
## Examples ## Examples
@ -708,8 +710,8 @@ path
## Description ## Description
The operation `--dump` produces a NAR (Nix ARchive) file containing the The operation `--dump` produces a NAR (Nix ARchive) file containing the
contents of the file system tree rooted at path. The archive is written contents of the file system tree rooted at *path*. The archive is
to standard output. written to standard output.
A NAR archive is like a TAR or Zip archive, but it contains only the A NAR archive is like a TAR or Zip archive, but it contains only the
information that Nix considers important. For instance, timestamps are information that Nix considers important. For instance, timestamps are
@ -745,8 +747,8 @@ path
## Description ## Description
The operation `--restore` unpacks a NAR archive to path, which must not The operation `--restore` unpacks a NAR archive to *path*, which must
already exist. The archive is read from standard input. not already exist. The archive is read from standard input.
# Operation `--export` # Operation `--export`

26
doc/manual/src/command-ref/opt-common.md
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@ -44,9 +44,9 @@ Most Nix commands accept the following command-line options:
This option may be specified repeatedly. See the previous verbosity This option may be specified repeatedly. See the previous verbosity
levels list. levels list.
- `--log-format` format - `--log-format` *format*
This option can be used to change the output of the log format, with This option can be used to change the output of the log format, with
format being one of: *format* being one of:
- raw - raw
This is the raw format, as outputted by nix-build. This is the raw format, as outputted by nix-build.
@ -68,7 +68,7 @@ Most Nix commands accept the following command-line options:
output and error are always written to a log file in output and error are always written to a log file in
`prefix/nix/var/log/nix`. `prefix/nix/var/log/nix`.
- `--max-jobs` / `-j` number - `--max-jobs` / `-j` *number*
Sets the maximum number of build jobs that Nix will perform in Sets the maximum number of build jobs that Nix will perform in
parallel to the specified number. Specify `auto` to use the number parallel to the specified number. Specify `auto` to use the number
of CPUs in the system. The default is specified by the of CPUs in the system. The default is specified by the
@ -144,7 +144,7 @@ Most Nix commands accept the following command-line options:
database. Most Nix operations do need database access, so those database. Most Nix operations do need database access, so those
operations will fail. operations will fail.
- `--arg` name value - `--arg` *name* *value*
This option is accepted by `nix-env`, `nix-instantiate`, `nix-shell` This option is accepted by `nix-env`, `nix-instantiate`, `nix-shell`
and `nix-build`. When evaluating Nix expressions, the expression and `nix-build`. When evaluating Nix expressions, the expression
evaluator will automatically try to call functions that it evaluator will automatically try to call functions that it
@ -153,8 +153,8 @@ Most Nix commands accept the following command-line options:
defaultValue }: defaultValue }:
...`). With `--arg`, you can also call functions that have arguments ...`). With `--arg`, you can also call functions that have arguments
without a default value (or override a default value). That is, if without a default value (or override a default value). That is, if
the evaluator encounters a function with an argument named name, it the evaluator encounters a function with an argument named *name*,
will call it with value value. it will call it with value *value*.
For instance, the top-level `default.nix` in Nixpkgs is actually a For instance, the top-level `default.nix` in Nixpkgs is actually a
function: function:
@ -172,18 +172,18 @@ Most Nix commands accept the following command-line options:
\"i686-freebsd\"`. (Note that since the argument is a Nix string \"i686-freebsd\"`. (Note that since the argument is a Nix string
literal, you have to escape the quotes.) literal, you have to escape the quotes.)
- `--argstr` name value - `--argstr` *name* *value*
This option is like `--arg`, only the value is not a Nix expression This option is like `--arg`, only the value is not a Nix expression
but a string. So instead of `--arg system \"i686-linux\"` (the outer but a string. So instead of `--arg system \"i686-linux\"` (the outer
quotes are to keep the shell happy) you can say `--argstr system quotes are to keep the shell happy) you can say `--argstr system
i686-linux`. i686-linux`.
- `--attr` / `-A` attrPath - `--attr` / `-A` *attrPath*
Select an attribute from the top-level Nix expression being Select an attribute from the top-level Nix expression being
evaluated. (`nix-env`, `nix-instantiate`, `nix-build` and evaluated. (`nix-env`, `nix-instantiate`, `nix-build` and
`nix-shell` only.) The *attribute path* attrPath is a sequence of `nix-shell` only.) The *attribute path* *attrPath* is a sequence of
attribute names separated by dots. For instance, given a top-level attribute names separated by dots. For instance, given a top-level
Nix expression e, the attribute path `xorg.xorgserver` would cause Nix expression *e*, the attribute path `xorg.xorgserver` would cause
the expression `e.xorg.xorgserver` to be used. See [`nix-env the expression `e.xorg.xorgserver` to be used. See [`nix-env
--install`](#refsec-nix-env-install-examples) for some concrete --install`](#refsec-nix-env-install-examples) for some concrete
examples. examples.
@ -204,14 +204,14 @@ Most Nix commands accept the following command-line options:
use, give your expression to the `nix-shell -p` convenience flag use, give your expression to the `nix-shell -p` convenience flag
instead. instead.
- `-I` path - `-I` *path*
Add a path to the Nix expression search path. This option may be Add a path to the Nix expression search path. This option may be
given multiple times. See the NIX\_PATH\</literal\> environment given multiple times. See the NIX\_PATH\</literal\> environment
variable for information on the semantics of the Nix search path. variable for information on the semantics of the Nix search path.
Paths added through `-I` take precedence over `NIX_PATH`. Paths added through `-I` take precedence over `NIX_PATH`.
- `--option` name value - `--option` *name* *value*
Set the Nix configuration option name to value. This overrides Set the Nix configuration option *name* to *value*. This overrides
settings in the Nix configuration file (see nix.conf5). settings in the Nix configuration file (see nix.conf5).
- `--repair` - `--repair`

10
doc/manual/src/expressions/advanced-attributes.md
View file

@ -54,9 +54,9 @@ Derivations can declare some infrequently used optional attributes.
attribute should be a list of pairs `[ name1 attribute should be a list of pairs `[ name1
path1 name2 path1 name2
path2 ... path2 ...
]`. The references graph of each pathN will be stored in a text file ]`. The references graph of each *pathN* will be stored in a text
nameN in the temporary build directory. The text files have the file *nameN* in the temporary build directory. The text files have
format used by `nix-store the format used by `nix-store
--register-validity` (with the deriver fields left empty). For --register-validity` (with the deriver fields left empty). For
example, when the following derivation is built: example, when the following derivation is built:
@ -204,9 +204,9 @@ Derivations can declare some infrequently used optional attributes.
then when the builder runs, the environment variable `bigPath` will then when the builder runs, the environment variable `bigPath` will
contain the absolute path to a temporary file containing `a very contain the absolute path to a temporary file containing `a very
long long
string`. That is, for any attribute x listed in `passAsFile`, Nix string`. That is, for any attribute *x* listed in `passAsFile`, Nix
will pass an environment variable `xPath` holding the path of the will pass an environment variable `xPath` holding the path of the
file containing the value of attribute x. This is useful when you file containing the value of attribute *x*. This is useful when you
need to pass large strings to a builder, since most operating need to pass large strings to a builder, since most operating
systems impose a limit on the size of the environment (typically, a systems impose a limit on the size of the environment (typically, a
few hundred kilobyte). few hundred kilobyte).

372
doc/manual/src/expressions/builtins.md
View file

@ -9,42 +9,42 @@ scope. Instead, you can access them through the `builtins` built-in
value, which is a set that contains all built-in functions and values. value, which is a set that contains all built-in functions and values.
For instance, `derivation` is also available as `builtins.derivation`. For instance, `derivation` is also available as `builtins.derivation`.
- `abort` s; `builtins.abort` s - `abort` *s*; `builtins.abort` *s*
Abort Nix expression evaluation, print error message s. Abort Nix expression evaluation, print error message *s*.
- `builtins.add` e1 e2 - `builtins.add` *e1* *e2*
Return the sum of the numbers e1 and e2. Return the sum of the numbers *e1* and *e2*.
- `builtins.all` pred list - `builtins.all` *pred* *list*
Return `true` if the function pred returns `true` for all elements Return `true` if the function *pred* returns `true` for all elements
of list, and `false` otherwise. of *list*, and `false` otherwise.
- `builtins.any` pred list - `builtins.any` *pred* *list*
Return `true` if the function pred returns `true` for at least one Return `true` if the function *pred* returns `true` for at least one
element of list, and `false` otherwise. element of *list*, and `false` otherwise.
- `builtins.attrNames` set - `builtins.attrNames` *set*
Return the names of the attributes in the set set in an Return the names of the attributes in the set *set* in an
alphabetically sorted list. For instance, `builtins.attrNames { y alphabetically sorted list. For instance, `builtins.attrNames { y
= 1; x = "foo"; }` evaluates to `[ "x" "y" ]`. = 1; x = "foo"; }` evaluates to `[ "x" "y" ]`.
- `builtins.attrValues` set - `builtins.attrValues` *set*
Return the values of the attributes in the set set in the order Return the values of the attributes in the set *set* in the order
corresponding to the sorted attribute names. corresponding to the sorted attribute names.
- `baseNameOf` s - `baseNameOf` *s*
Return the *base name* of the string s, that is, everything Return the *base name* of the string *s*, that is, everything
following the final slash in the string. This is similar to the GNU following the final slash in the string. This is similar to the GNU
`basename` command. `basename` command.
- `builtins.bitAnd` e1 e2 - `builtins.bitAnd` *e1* *e2*
Return the bitwise AND of the integers e1 and e2. Return the bitwise AND of the integers *e1* and *e2*.
- `builtins.bitOr` e1 e2 - `builtins.bitOr` *e1* *e2*
Return the bitwise OR of the integers e1 and e2. Return the bitwise OR of the integers *e1* and *e2*.
- `builtins.bitXor` e1 e2 - `builtins.bitXor` *e1* *e2*
Return the bitwise XOR of the integers e1 and e2. Return the bitwise XOR of the integers *e1* and *e2*.
- `builtins` - `builtins`
The set `builtins` contains all the built-in functions and values. The set `builtins` contains all the built-in functions and values.
@ -56,17 +56,17 @@ For instance, `derivation` is also available as `builtins.derivation`.
This allows a Nix expression to fall back gracefully on older Nix This allows a Nix expression to fall back gracefully on older Nix
installations that don’t have the desired built-in function. installations that don’t have the desired built-in function.
- `builtins.compareVersions` s1 s2 - `builtins.compareVersions` *s1* *s2*
Compare two strings representing versions and return `-1` if version Compare two strings representing versions and return `-1` if version
s1 is older than version s2, `0` if they are the same, and `1` if s1 *s1* is older than version *s2*, `0` if they are the same, and `1`
is newer than s2. The version comparison algorithm is the same as if *s1* is newer than *s2*. The version comparison algorithm is the
the one used by [`nix-env same as the one used by [`nix-env
-u`](#ssec-version-comparisons). -u`](#ssec-version-comparisons).
- `builtins.concatLists` lists - `builtins.concatLists` *lists*
Concatenate a list of lists into a single list. Concatenate a list of lists into a single list.
- `builtins.concatStringsSep` separator list - `builtins.concatStringsSep` *separator* *list*
Concatenate a list of strings with a separator between each element, Concatenate a list of strings with a separator between each element,
e.g. `concatStringsSep "/" e.g. `concatStringsSep "/"
["usr" "local" "bin"] == "usr/local/bin"` ["usr" "local" "bin"] == "usr/local/bin"`
@ -76,37 +76,37 @@ For instance, `derivation` is also available as `builtins.derivation`.
identifier for the Nix installation on which the expression is being identifier for the Nix installation on which the expression is being
evaluated, such as `"i686-linux"` or `"x86_64-darwin"`. evaluated, such as `"i686-linux"` or `"x86_64-darwin"`.
- `builtins.deepSeq` e1 e2 - `builtins.deepSeq` *e1* *e2*
This is like `seq This is like `seq
e1 e1
e2`, except that e1 is evaluated *deeply*: if it’s a list or set, e2`, except that *e1* is evaluated *deeply*: if it’s a list or set,
its elements or attributes are also evaluated recursively. its elements or attributes are also evaluated recursively.
- `derivation` attrs; `builtins.derivation` attrs - `derivation` *attrs*; `builtins.derivation` *attrs*
`derivation` is described in [???](#ssec-derivation). `derivation` is described in [???](#ssec-derivation).
- `dirOf` s; `builtins.dirOf` s - `dirOf` *s*; `builtins.dirOf` *s*
Return the directory part of the string s, that is, everything Return the directory part of the string *s*, that is, everything
before the final slash in the string. This is similar to the GNU before the final slash in the string. This is similar to the GNU
`dirname` command. `dirname` command.
- `builtins.div` e1 e2 - `builtins.div` *e1* *e2*
Return the quotient of the numbers e1 and e2. Return the quotient of the numbers *e1* and *e2*.
- `builtins.elem` x xs - `builtins.elem` *x* *xs*
Return `true` if a value equal to x occurs in the list xs, and Return `true` if a value equal to *x* occurs in the list *xs*, and
`false` otherwise. `false` otherwise.
- `builtins.elemAt` xs n - `builtins.elemAt` *xs* *n*
Return element n from the list xs. Elements are counted starting Return element *n* from the list *xs*. Elements are counted starting
from 0. A fatal error occurs if the index is out of bounds. from 0. A fatal error occurs if the index is out of bounds.
- `builtins.fetchurl` url - `builtins.fetchurl` *url*
Download the specified URL and return the path of the downloaded Download the specified URL and return the path of the downloaded
file. This function is not available if [restricted evaluation file. This function is not available if [restricted evaluation
mode](#conf-restrict-eval) is enabled. mode](#conf-restrict-eval) is enabled.
- `fetchTarball` url; `builtins.fetchTarball` url - `fetchTarball` *url*; `builtins.fetchTarball` *url*
Download the specified URL, unpack it and return the path of the Download the specified URL, unpack it and return the path of the
unpacked tree. The file must be a tape archive (`.tar`) compressed unpacked tree. The file must be a tape archive (`.tar`) compressed
with `gzip`, `bzip2` or `xz`. The top-level path component of the with `gzip`, `bzip2` or `xz`. The top-level path component of the
@ -142,10 +142,10 @@ For instance, `derivation` is also available as `builtins.derivation`.
This function is not available if [restricted evaluation This function is not available if [restricted evaluation
mode](#conf-restrict-eval) is enabled. mode](#conf-restrict-eval) is enabled.
- `builtins.fetchGit` args - `builtins.fetchGit` *args*
Fetch a path from git. args can be a URL, in which case the HEAD of Fetch a path from git. *args* can be a URL, in which case the HEAD
the repo at that URL is fetched. Otherwise, it can be an attribute of the repo at that URL is fetched. Otherwise, it can be an
with the following attributes (all except `url` optional): attribute with the following attributes (all except `url` optional):
- url - url
The URL of the repo. The URL of the repo.
@ -240,11 +240,11 @@ For instance, `derivation` is also available as `builtins.derivation`.
> >
> This behavior is disabled in *Pure evaluation mode*. > This behavior is disabled in *Pure evaluation mode*.
- `builtins.filter` f xs - `builtins.filter` *f* *xs*
Return a list consisting of the elements of xs for which the Return a list consisting of the elements of *xs* for which the
function f returns `true`. function *f* returns `true`.
- `builtins.filterSource` e1 e2 - `builtins.filterSource` *e1* *e2*
This function allows you to copy sources into the Nix store while This function allows you to copy sources into the Nix store while
filtering certain files. For instance, suppose that you want to use filtering certain files. For instance, suppose that you want to use
the directory `source-dir` as an input to a Nix expression, e.g. the directory `source-dir` as an input to a Nix expression, e.g.
@ -266,9 +266,9 @@ For instance, `derivation` is also available as `builtins.derivation`.
./source-dir; ./source-dir;
``` ```
Thus, the first argument e1 must be a predicate function that is Thus, the first argument *e1* must be a predicate function that is
called for each regular file, directory or symlink in the source called for each regular file, directory or symlink in the source
tree e2. If the function returns `true`, the file is copied to the tree *e2*. If the function returns `true`, the file is copied to the
Nix store, otherwise it is omitted. The function is called with two Nix store, otherwise it is omitted. The function is called with two
arguments. The first is the full path of the file. The second is a arguments. The first is the full path of the file. The second is a
string that identifies the type of the file, which is either string that identifies the type of the file, which is either
@ -276,19 +276,19 @@ For instance, `derivation` is also available as `builtins.derivation`.
kinds of files such as device nodes or fifos — but note that those kinds of files such as device nodes or fifos — but note that those
cannot be copied to the Nix store, so if the predicate returns cannot be copied to the Nix store, so if the predicate returns
`true` for them, the copy will fail). If you exclude a directory, `true` for them, the copy will fail). If you exclude a directory,
the entire corresponding subtree of e2 will be excluded. the entire corresponding subtree of *e2* will be excluded.
- `builtins.foldl’` op nul list - `builtins.foldl’` *op* *nul* *list*
Reduce a list by applying a binary operator, from left to right, Reduce a list by applying a binary operator, from left to right,
e.g. `foldl’ op nul [x0 x1 x2 ...] = op (op e.g. `foldl’ op nul [x0 x1 x2 ...] = op (op
(op nul x0) x1) x2) ...`. The operator is applied strictly, i.e., (op nul x0) x1) x2) ...`. The operator is applied strictly, i.e.,
its arguments are evaluated first. For example, `foldl’ (x: y: x + its arguments are evaluated first. For example, `foldl’ (x: y: x +
y) 0 [1 2 3]` evaluates to 6. y) 0 [1 2 3]` evaluates to 6.
- `builtins.functionArgs` f - `builtins.functionArgs` *f*
Return a set containing the names of the formal arguments expected Return a set containing the names of the formal arguments expected
by the function f. The value of each attribute is a Boolean denoting by the function *f*. The value of each attribute is a Boolean
whether the corresponding argument has a default value. For denoting whether the corresponding argument has a default value. For
instance, `functionArgs ({ x, y ? 123}: ...) = { x = false; y = instance, `functionArgs ({ x, y ? 123}: ...) = { x = false; y =
true; }`. true; }`.
@ -296,7 +296,7 @@ For instance, `derivation` is also available as `builtins.derivation`.
the function. Plain lambdas are not included, e.g. `functionArgs (x: the function. Plain lambdas are not included, e.g. `functionArgs (x:
...) = { }`. ...) = { }`.
- `builtins.fromJSON` e - `builtins.fromJSON` *e*
Convert a JSON string to a Nix value. For example, Convert a JSON string to a Nix value. For example,
builtins.fromJSON ''{"x": [1, 2, 3], "y": null}'' builtins.fromJSON ''{"x": [1, 2, 3], "y": null}''
@ -304,21 +304,22 @@ For instance, `derivation` is also available as `builtins.derivation`.
returns the value `{ x = [ 1 2 3 ]; y = null; returns the value `{ x = [ 1 2 3 ]; y = null;
}`. }`.
- `builtins.genList` generator length - `builtins.genList` *generator* *length*
Generate list of size length, with each element i equal to the value Generate list of size *length*, with each element *i* equal to the
returned by generator `i`. For example, value returned by *generator* `i`. For example,
builtins.genList (x: x * x) 5 builtins.genList (x: x * x) 5
returns the list `[ 0 1 4 9 16 ]`. returns the list `[ 0 1 4 9 16 ]`.
- `builtins.getAttr` s set - `builtins.getAttr` *s* *set*
`getAttr` returns the attribute named s from set. Evaluation aborts `getAttr` returns the attribute named *s* from *set*. Evaluation
if the attribute doesn’t exist. This is a dynamic version of the `.` aborts if the attribute doesn’t exist. This is a dynamic version of
operator, since s is an expression rather than an identifier. the `.` operator, since *s* is an expression rather than an
identifier.
- `builtins.getEnv` s - `builtins.getEnv` *s*
`getEnv` returns the value of the environment variable s, or an `getEnv` returns the value of the environment variable *s*, or an
empty string if the variable doesn’t exist. This function should be empty string if the variable doesn’t exist. This function should be
used with care, as it can introduce all sorts of nasty environment used with care, as it can introduce all sorts of nasty environment
dependencies in your Nix expression. dependencies in your Nix expression.
@ -328,29 +329,29 @@ For instance, `derivation` is also available as `builtins.derivation`.
Packages. (That is, it does a `getEnv "HOME"` to locate the user’s Packages. (That is, it does a `getEnv "HOME"` to locate the user’s
home directory.) home directory.)
- `builtins.hasAttr` s set - `builtins.hasAttr` *s* *set*
`hasAttr` returns `true` if set has an attribute named s, and `hasAttr` returns `true` if *set* has an attribute named *s*, and
`false` otherwise. This is a dynamic version of the `?` operator, `false` otherwise. This is a dynamic version of the `?` operator,
since s is an expression rather than an identifier. since *s* is an expression rather than an identifier.
- `builtins.hashString` type s - `builtins.hashString` *type* *s*
Return a base-16 representation of the cryptographic hash of string Return a base-16 representation of the cryptographic hash of string
s. The hash algorithm specified by type must be one of `"md5"`, *s*. The hash algorithm specified by *type* must be one of `"md5"`,
`"sha1"`, `"sha256"` or `"sha512"`. `"sha1"`, `"sha256"` or `"sha512"`.
- `builtins.hashFile` type p - `builtins.hashFile` *type* *p*
Return a base-16 representation of the cryptographic hash of the Return a base-16 representation of the cryptographic hash of the
file at path p. The hash algorithm specified by type must be one of file at path *p*. The hash algorithm specified by *type* must be one
`"md5"`, `"sha1"`, `"sha256"` or `"sha512"`. of `"md5"`, `"sha1"`, `"sha256"` or `"sha512"`.
- `builtins.head` list - `builtins.head` *list*
Return the first element of a list; abort evaluation if the argument Return the first element of a list; abort evaluation if the argument
isn’t a list or is an empty list. You can test whether a list is isn’t a list or is an empty list. You can test whether a list is
empty by comparing it with `[]`. empty by comparing it with `[]`.
- `import` path; `builtins.import` path - `import` *path*; `builtins.import` *path*
Load, parse and return the Nix expression in the file path. If path Load, parse and return the Nix expression in the file *path*. If
is a directory, the file ` default.nix *path* is a directory, the file ` default.nix
` in that directory is loaded. Evaluation aborts if the file ` in that directory is loaded. Evaluation aborts if the file
doesn’t exist or contains an incorrect Nix expression. `import` doesn’t exist or contains an incorrect Nix expression. `import`
implements Nix’s module system: you can put any Nix expression (such implements Nix’s module system: you can put any Nix expression (such
@ -361,7 +362,8 @@ For instance, `derivation` is also available as `builtins.derivation`.
> >
> Unlike some languages, `import` is a regular function in Nix. > Unlike some languages, `import` is a regular function in Nix.
> Paths using the angle bracket syntax (e.g., ` > Paths using the angle bracket syntax (e.g., `
> > > > > import` \<foo\>) are normal path values (see [???](#ssec-values)). > > > > > import` *\<foo\>*) are normal path values (see
> [???](#ssec-values)).
A Nix expression loaded by `import` must not contain any *free A Nix expression loaded by `import` must not contain any *free
variables* (identifiers that are not defined in the Nix expression variables* (identifiers that are not defined in the Nix expression
@ -393,50 +395,50 @@ For instance, `derivation` is also available as `builtins.derivation`.
(The function argument doesn’t have to be called `x` in `foo.nix`; (The function argument doesn’t have to be called `x` in `foo.nix`;
any name would work.) any name would work.)
- `builtins.intersectAttrs` e1 e2 - `builtins.intersectAttrs` *e1* *e2*
Return a set consisting of the attributes in the set e2 that also Return a set consisting of the attributes in the set *e2* that also
exist in the set e1. exist in the set *e1*.
- `builtins.isAttrs` e - `builtins.isAttrs` *e*
Return `true` if e evaluates to a set, and `false` otherwise. Return `true` if *e* evaluates to a set, and `false` otherwise.
- `builtins.isList` e - `builtins.isList` *e*
Return `true` if e evaluates to a list, and `false` otherwise. Return `true` if *e* evaluates to a list, and `false` otherwise.
- `builtins.isFunction` e - `builtins.isFunction` *e*
Return `true` if e evaluates to a function, and `false` otherwise. Return `true` if *e* evaluates to a function, and `false` otherwise.
- `builtins.isString` e - `builtins.isString` *e*
Return `true` if e evaluates to a string, and `false` otherwise. Return `true` if *e* evaluates to a string, and `false` otherwise.
- `builtins.isInt` e - `builtins.isInt` *e*
Return `true` if e evaluates to an int, and `false` otherwise. Return `true` if *e* evaluates to an int, and `false` otherwise.
- `builtins.isFloat` e - `builtins.isFloat` *e*
Return `true` if e evaluates to a float, and `false` otherwise. Return `true` if *e* evaluates to a float, and `false` otherwise.
- `builtins.isBool` e - `builtins.isBool` *e*
Return `true` if e evaluates to a bool, and `false` otherwise. Return `true` if *e* evaluates to a bool, and `false` otherwise.
- `builtins.isPath` e - `builtins.isPath` *e*
Return `true` if e evaluates to a path, and `false` otherwise. Return `true` if *e* evaluates to a path, and `false` otherwise.
- `isNull` e; `builtins.isNull` e - `isNull` *e*; `builtins.isNull` *e*
Return `true` if e evaluates to `null`, and `false` otherwise. Return `true` if *e* evaluates to `null`, and `false` otherwise.
> **Warning** > **Warning**
> >
> This function is *deprecated*; just write `e == null` instead. > This function is *deprecated*; just write `e == null` instead.
- `builtins.length` e - `builtins.length` *e*
Return the length of the list e. Return the length of the list *e*.
- `builtins.lessThan` e1 e2 - `builtins.lessThan` *e1* *e2*
Return `true` if the number e1 is less than the number e2, and Return `true` if the number *e1* is less than the number *e2*, and
`false` otherwise. Evaluation aborts if either e1 or e2 does not `false` otherwise. Evaluation aborts if either *e1* or *e2* does not
evaluate to a number. evaluate to a number.
- `builtins.listToAttrs` e - `builtins.listToAttrs` *e*
Construct a set from a list specifying the names and values of each Construct a set from a list specifying the names and values of each
attribute. Each element of the list should be a set consisting of a attribute. Each element of the list should be a set consisting of a
string-valued attribute `name` specifying the name of the attribute, string-valued attribute `name` specifying the name of the attribute,
@ -451,19 +453,20 @@ For instance, `derivation` is also available as `builtins.derivation`.
{ foo = 123; bar = 456; } { foo = 123; bar = 456; }
- `map` f list; `builtins.map` f list - `map` *f* *list*; `builtins.map` *f* *list*
Apply the function f to each element in the list list. For example, Apply the function *f* to each element in the list *list*. For
example,
map (x: "foo" + x) [ "bar" "bla" "abc" ] map (x: "foo" + x) [ "bar" "bla" "abc" ]
evaluates to `[ "foobar" "foobla" "fooabc" evaluates to `[ "foobar" "foobla" "fooabc"
]`. ]`.
- `builtins.match` regex str - `builtins.match` *regex* *str*
Returns a list if the [extended POSIX regular Returns a list if the [extended POSIX regular
expression](http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04) expression](http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04)
regex matches str precisely, otherwise returns `null`. Each item in *regex* matches *str* precisely, otherwise returns `null`. Each item
the list is a regex group. in the list is a regex group.
builtins.match "ab" "abc" builtins.match "ab" "abc"
@ -481,21 +484,21 @@ For instance, `derivation` is also available as `builtins.derivation`.
Evaluates to `[ "foo" ]`. Evaluates to `[ "foo" ]`.
- `builtins.mul` e1 e2 - `builtins.mul` *e1* *e2*
Return the product of the numbers e1 and e2. Return the product of the numbers *e1* and *e2*.
- `builtins.parseDrvName` s - `builtins.parseDrvName` *s*
Split the string s into a package name and version. The package name Split the string *s* into a package name and version. The package
is everything up to but not including the first dash followed by a name is everything up to but not including the first dash followed
digit, and the version is everything following that dash. The result by a digit, and the version is everything following that dash. The
is returned in a set `{ name, version }`. Thus, result is returned in a set `{ name, version }`. Thus,
`builtins.parseDrvName "nix-0.12pre12876"` returns `{ name = "nix"; `builtins.parseDrvName "nix-0.12pre12876"` returns `{ name = "nix";
version = "0.12pre12876"; version = "0.12pre12876";
}`. }`.
- `builtins.path` args - `builtins.path` *args*
An enrichment of the built-in path type, based on the attributes An enrichment of the built-in path type, based on the attributes
present in args. All are optional except `path`: present in *args*. All are optional except `path`:
- path - path
The underlying path. The underlying path.
@ -523,20 +526,20 @@ For instance, `derivation` is also available as `builtins.derivation`.
providing a hash allows `builtins.path` to be used even when the providing a hash allows `builtins.path` to be used even when the
`pure-eval` nix config option is on. `pure-eval` nix config option is on.
- `builtins.pathExists` path - `builtins.pathExists` *path*
Return `true` if the path path exists at evaluation time, and Return `true` if the path *path* exists at evaluation time, and
`false` otherwise. `false` otherwise.
- `builtins.placeholder` output - `builtins.placeholder` *output*
Return a placeholder string for the specified output that will be Return a placeholder string for the specified *output* that will be
substituted by the corresponding output path at build time. Typical substituted by the corresponding output path at build time. Typical
outputs would be `"out"`, `"bin"` or `"dev"`. outputs would be `"out"`, `"bin"` or `"dev"`.
- `builtins.readDir` path - `builtins.readDir` *path*
Return the contents of the directory path as a set mapping directory Return the contents of the directory *path* as a set mapping
entries to the corresponding file type. For instance, if directory directory entries to the corresponding file type. For instance, if
`A` contains a regular file `B` and another directory `C`, then directory `A` contains a regular file `B` and another directory `C`,
`builtins.readDir then `builtins.readDir
./A` will return the set ./A` will return the set
{ B = "regular"; C = "directory"; } { B = "regular"; C = "directory"; }
@ -544,33 +547,33 @@ For instance, `derivation` is also available as `builtins.derivation`.
The possible values for the file type are `"regular"`, The possible values for the file type are `"regular"`,
`"directory"`, `"symlink"` and `"unknown"`. `"directory"`, `"symlink"` and `"unknown"`.
- `builtins.readFile` path - `builtins.readFile` *path*
Return the contents of the file path as a string. Return the contents of the file *path* as a string.
- `removeAttrs` set list; `builtins.removeAttrs` set list - `removeAttrs` *set* *list*; `builtins.removeAttrs` *set* *list*
Remove the attributes listed in list from set. The attributes don’t Remove the attributes listed in *list* from *set*. The attributes
have to exist in set. For instance, don’t have to exist in *set*. For instance,
removeAttrs { x = 1; y = 2; z = 3; } [ "a" "x" "z" ] removeAttrs { x = 1; y = 2; z = 3; } [ "a" "x" "z" ]
evaluates to `{ y = 2; }`. evaluates to `{ y = 2; }`.
- `builtins.replaceStrings` from to s - `builtins.replaceStrings` *from* *to* *s*
Given string s, replace every occurrence of the strings in from with Given string *s*, replace every occurrence of the strings in *from*
the corresponding string in to. For example, with the corresponding string in *to*. For example,
builtins.replaceStrings ["oo" "a"] ["a" "i"] "foobar" builtins.replaceStrings ["oo" "a"] ["a" "i"] "foobar"
evaluates to `"fabir"`. evaluates to `"fabir"`.
- `builtins.seq` e1 e2 - `builtins.seq` *e1* *e2*
Evaluate e1, then evaluate and return e2. This ensures that a Evaluate *e1*, then evaluate and return *e2*. This ensures that a
computation is strict in the value of e1. computation is strict in the value of *e1*.
- `builtins.sort` comparator list - `builtins.sort` *comparator* *list*
Return list in sorted order. It repeatedly calls the function Return *list* in sorted order. It repeatedly calls the function
comparator with two elements. The comparator should return `true` if *comparator* with two elements. The comparator should return `true`
the first element is less than the second, and `false` otherwise. if the first element is less than the second, and `false` otherwise.
For example, For example,
builtins.sort builtins.lessThan [ 483 249 526 147 42 77 ] builtins.sort builtins.lessThan [ 483 249 526 147 42 77 ]
@ -581,12 +584,12 @@ For instance, `derivation` is also available as `builtins.derivation`.
This is a stable sort: it preserves the relative order of elements This is a stable sort: it preserves the relative order of elements
deemed equal by the comparator. deemed equal by the comparator.
- `builtins.split` regex str - `builtins.split` *regex* *str*
Returns a list composed of non matched strings interleaved with the Returns a list composed of non matched strings interleaved with the
lists of the [extended POSIX regular lists of the [extended POSIX regular
expression](http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04) expression](http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04)
regex matches of str. Each item in the lists of matched sequences is *regex* matches of *str*. Each item in the lists of matched
a regex group. sequences is a regex group.
builtins.split "(a)b" "abc" builtins.split "(a)b" "abc"
@ -604,44 +607,44 @@ For instance, `derivation` is also available as `builtins.derivation`.
Evaluates to `[ " " [ "FOO" ] " " ]`. Evaluates to `[ " " [ "FOO" ] " " ]`.
- `builtins.splitVersion` s - `builtins.splitVersion` *s*
Split a string representing a version into its components, by the Split a string representing a version into its components, by the
same version splitting logic underlying the version comparison in same version splitting logic underlying the version comparison in
[`nix-env -u`](#ssec-version-comparisons). [`nix-env -u`](#ssec-version-comparisons).
- `builtins.stringLength` e - `builtins.stringLength` *e*
Return the length of the string e. If e is not a string, evaluation Return the length of the string *e*. If *e* is not a string,
is aborted. evaluation is aborted.
- `builtins.sub` e1 e2 - `builtins.sub` *e1* *e2*
Return the difference between the numbers e1 and e2. Return the difference between the numbers *e1* and *e2*.
- `builtins.substring` start len s - `builtins.substring` *start* *len* *s*
Return the substring of s from character position start (zero-based) Return the substring of *s* from character position *start*
up to but not including start + len. If start is greater than the (zero-based) up to but not including *start + len*. If *start* is
length of the string, an empty string is returned, and if start + greater than the length of the string, an empty string is returned,
len lies beyond the end of the string, only the substring up to the and if *start + len* lies beyond the end of the string, only the
end of the string is returned. start must be non-negative. For substring up to the end of the string is returned. *start* must be
example, non-negative. For example,
builtins.substring 0 3 "nixos" builtins.substring 0 3 "nixos"
evaluates to `"nix"`. evaluates to `"nix"`.
- `builtins.tail` list - `builtins.tail` *list*
Return the second to last elements of a list; abort evaluation if Return the second to last elements of a list; abort evaluation if
the argument isn’t a list or is an empty list. the argument isn’t a list or is an empty list.
- `throw` s; `builtins.throw` s - `throw` *s*; `builtins.throw` *s*
Throw an error message s. This usually aborts Nix expression Throw an error message *s*. This usually aborts Nix expression
evaluation, but in `nix-env -qa` and other commands that try to evaluation, but in `nix-env -qa` and other commands that try to
evaluate a set of derivations to get information about those evaluate a set of derivations to get information about those
derivations, a derivation that throws an error is silently skipped derivations, a derivation that throws an error is silently skipped
(which is not the case for `abort`). (which is not the case for `abort`).
- `builtins.toFile` name s - `builtins.toFile` *name* *s*
Store the string s in a file in the Nix store and return its path. Store the string *s* in a file in the Nix store and return its path.
The file has suffix name. This file can be used as an input to The file has suffix *name*. This file can be used as an input to
derivations. One application is to write builders “inline”. For derivations. One application is to write builders “inline”. For
instance, the following Nix expression combines [???](#ex-hello-nix) instance, the following Nix expression combines [???](#ex-hello-nix)
and [???](#ex-hello-builder) into one file: and [???](#ex-hello-builder) into one file:
@ -705,20 +708,20 @@ For instance, `derivation` is also available as `builtins.derivation`.
you are using Nixpkgs, the `writeTextFile` function is able to do you are using Nixpkgs, the `writeTextFile` function is able to do
that. that.
- `builtins.toJSON` e - `builtins.toJSON` *e*
Return a string containing a JSON representation of e. Strings, Return a string containing a JSON representation of *e*. Strings,
integers, floats, booleans, nulls and lists are mapped to their JSON integers, floats, booleans, nulls and lists are mapped to their JSON
equivalents. Sets (except derivations) are represented as objects. equivalents. Sets (except derivations) are represented as objects.
Derivations are translated to a JSON string containing the Derivations are translated to a JSON string containing the
derivation’s output path. Paths are copied to the store and derivation’s output path. Paths are copied to the store and
represented as a JSON string of the resulting store path. represented as a JSON string of the resulting store path.
- `builtins.toPath` s - `builtins.toPath` *s*
DEPRECATED. Use `/. + "/path"` to convert a string into an absolute DEPRECATED. Use `/. + "/path"` to convert a string into an absolute
path. For relative paths, use `./. + "/path"`. path. For relative paths, use `./. + "/path"`.
- `toString` e; `builtins.toString` e - `toString` *e*; `builtins.toString` *e*
Convert the expression e to a string. e can be: Convert the expression *e* to a string. *e* can be:
- A string (in which case the string is returned unmodified). - A string (in which case the string is returned unmodified).
@ -735,8 +738,8 @@ For instance, `derivation` is also available as `builtins.derivation`.
- `null`, which yields the empty string. - `null`, which yields the empty string.
- `builtins.toXML` e - `builtins.toXML` *e*
Return a string containing an XML representation of e. The main Return a string containing an XML representation of *e*. The main
application for `toXML` is to communicate information with the application for `toXML` is to communicate information with the
builder in a more structured format than plain environment builder in a more structured format than plain environment
variables. variables.
@ -822,22 +825,23 @@ For instance, `derivation` is also available as `builtins.derivation`.
of the stylesheet is spliced into the builder using the syntax of the stylesheet is spliced into the builder using the syntax
`xsltproc ${stylesheet}`. `xsltproc ${stylesheet}`.
- `builtins.trace` e1 e2 - `builtins.trace` *e1* *e2*
Evaluate e1 and print its abstract syntax representation on standard Evaluate *e1* and print its abstract syntax representation on
error. Then return e2. This function is useful for debugging. standard error. Then return *e2*. This function is useful for
debugging.
- `builtins.tryEval` e - `builtins.tryEval` *e*
Try to shallowly evaluate e. Return a set containing the attributes Try to shallowly evaluate *e*. Return a set containing the
`success` (`true` if e evaluated successfully, `false` if an error attributes `success` (`true` if *e* evaluated successfully, `false`
was thrown) and `value`, equalling e if successful and `false` if an error was thrown) and `value`, equalling *e* if successful and
otherwise. Note that this doesn't evaluate e deeply, so ` let e = { `false` otherwise. Note that this doesn't evaluate *e* deeply, so
x = throw ""; }; in (builtins.tryEval e).success ` let e = { x = throw ""; }; in (builtins.tryEval e).success
` will be `true`. Using ` builtins.deepSeq ` will be `true`. Using ` builtins.deepSeq
` one can get the expected result: `let e = { x = throw ""; ` one can get the expected result: `let e = { x = throw "";
}; in (builtins.tryEval (builtins.deepSeq e e)).success` will be }; in (builtins.tryEval (builtins.deepSeq e e)).success` will be
`false`. `false`.
- `builtins.typeOf` e - `builtins.typeOf` *e*
Return a string representing the type of the value e, namely Return a string representing the type of the value *e*, namely
`"int"`, `"bool"`, `"string"`, `"path"`, `"null"`, `"set"`, `"int"`, `"bool"`, `"string"`, `"path"`, `"null"`, `"set"`,
`"list"`, `"lambda"` or `"float"`. `"list"`, `"lambda"` or `"float"`.

2
doc/manual/src/expressions/expression-syntax.md
View file

@ -33,7 +33,7 @@ elements (referenced from the figure by number):
Nix functions generally have the form `{ x, y, ..., Nix functions generally have the form `{ x, y, ...,
z }: e` where `x`, `y`, etc. are the names of the expected z }: e` where `x`, `y`, etc. are the names of the expected
arguments, and where e is the body of the function. So here, the arguments, and where *e* is the body of the function. So here, the
entire remainder of the file is the body of the function; when given entire remainder of the file is the body of the function; when given
the required arguments, the body should describe how to build an the required arguments, the body should describe how to build an
instance of the Hello package. instance of the Hello package.

14
doc/manual/src/expressions/language-constructs.md
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@ -147,7 +147,7 @@ three kinds of patterns:
It is possible to provide *default values* for attributes, in which It is possible to provide *default values* for attributes, in which
case they are allowed to be missing. A default value is specified by case they are allowed to be missing. A default value is specified by
writing `name ? writing `name ?
e`, where e is an arbitrary expression. For example, e`, where *e* is an arbitrary expression. For example,
{ x, y ? "foo", z ? "bar" }: z + y + x { x, y ? "foo", z ? "bar" }: z + y + x
@ -201,7 +201,7 @@ Conditionals look like this:
if e1 then e2 else e3 if e1 then e2 else e3
where e1 is an expression that should evaluate to a Boolean value where *e1* is an expression that should evaluate to a Boolean value
(`true` or `false`). (`true` or `false`).
## Assertions ## Assertions
@ -211,9 +211,9 @@ between features and dependencies hold. They look like this:
assert e1; e2 assert e1; e2
where e1 is an expression that should evaluate to a Boolean value. If it where *e1* is an expression that should evaluate to a Boolean value. If
evaluates to `true`, e2 is returned; otherwise expression evaluation is it evaluates to `true`, *e2* is returned; otherwise expression
aborted and a backtrace is printed. evaluation is aborted and a backtrace is printed.
Here is a Nix expression for the Subversion package that shows how Here is a Nix expression for the Subversion package that shows how
assertions can be used:. assertions can be used:.
@ -275,8 +275,8 @@ A *with-expression*,
with e1; e2 with e1; e2
introduces the set e1 into the lexical scope of the expression e2. For introduces the set *e1* into the lexical scope of the expression *e2*.
instance, For instance,
let as = { x = "foo"; y = "bar"; }; let as = { x = "foo"; y = "bar"; };
in with as; x + y in with as; x + y

44
doc/manual/src/expressions/language-operators.md
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@ -5,28 +5,28 @@ expression language, in order of precedence (from strongest to weakest
binding). binding).
| Name | Syntax | Associativity | Description | Precedence | | Name | Syntax | Associativity | Description | Precedence |
| ------------------------ | ----------------------------- | ------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------- | | ------------------------ | ----------------------------------- | ------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------- |
| Select | e `.` attrpath \[ `or` def \] | none | Select attribute denoted by the attribute path attrpath from set e. (An attribute path is a dot-separated list of attribute names.) If the attribute doesn’t exist, return def if provided, otherwise abort evaluation. | 1 | | Select | *e* `.` *attrpath* \[ `or` *def* \] | none | Select attribute denoted by the attribute path *attrpath* from set *e*. (An attribute path is a dot-separated list of attribute names.) If the attribute doesn’t exist, return *def* if provided, otherwise abort evaluation. | 1 |
| Application | e1 e2 | left | Call function e1 with argument e2. | 2 | | Application | *e1* *e2* | left | Call function *e1* with argument *e2*. | 2 |
| Arithmetic Negation | `-` e | none | Arithmetic negation. | 3 | | Arithmetic Negation | `-` *e* | none | Arithmetic negation. | 3 |
| Has Attribute | e `?` attrpath | none | Test whether set e contains the attribute denoted by attrpath; return `true` or `false`. | 4 | | Has Attribute | *e* `?` *attrpath* | none | Test whether set *e* contains the attribute denoted by *attrpath*; return `true` or `false`. | 4 |
| List Concatenation | e1 `++` e2 | right | List concatenation. | 5 | | List Concatenation | *e1* `++` *e2* | right | List concatenation. | 5 |
| Multiplication | e1 `*` e2, | left | Arithmetic multiplication. | 6 | | Multiplication | *e1* `*` *e2*, | left | Arithmetic multiplication. | 6 |
| Division | e1 `/` e2 | left | Arithmetic division. | 6 | | Division | *e1* `/` *e2* | left | Arithmetic division. | 6 |
| Addition | e1 `+` e2 | left | Arithmetic addition. | 7 | | Addition | *e1* `+` *e2* | left | Arithmetic addition. | 7 |
| Subtraction | e1 `-` e2 | left | Arithmetic subtraction. | 7 | | Subtraction | *e1* `-` *e2* | left | Arithmetic subtraction. | 7 |
| String Concatenation | string1 `+` string2 | left | String concatenation. | 7 | | String Concatenation | *string1* `+` *string2* | left | String concatenation. | 7 |
| Not | `!` e | none | Boolean negation. | 8 | | Not | `!` *e* | none | Boolean negation. | 8 |
| Update | e1 `//` e2 | right | Return a set consisting of the attributes in e1 and e2 (with the latter taking precedence over the former in case of equally named attributes). | 9 | | Update | *e1* `//` *e2* | right | Return a set consisting of the attributes in *e1* and *e2* (with the latter taking precedence over the former in case of equally named attributes). | 9 |
| Less Than | e1 `<` e2, | none | Arithmetic comparison. | 10 | | Less Than | *e1* `<` *e2*, | none | Arithmetic comparison. | 10 |
| Less Than or Equal To | e1 `<=` e2 | none | Arithmetic comparison. | 10 | | Less Than or Equal To | *e1* `<=` *e2* | none | Arithmetic comparison. | 10 |
| Greater Than | e1 `>` e2 | none | Arithmetic comparison. | 10 | | Greater Than | *e1* `>` *e2* | none | Arithmetic comparison. | 10 |
| Greater Than or Equal To | e1 `>=` e2 | none | Arithmetic comparison. | 10 | | Greater Than or Equal To | *e1* `>=` *e2* | none | Arithmetic comparison. | 10 |
| Equality | e1 `==` e2 | none | Equality. | 11 | | Equality | *e1* `==` *e2* | none | Equality. | 11 |
| Inequality | e1 `!=` e2 | none | Inequality. | 11 | | Inequality | *e1* `!=` *e2* | none | Inequality. | 11 |
| Logical AND | e1 `&&` e2 | left | Logical AND. | 12 | | Logical AND | *e1* `&&` *e2* | left | Logical AND. | 12 |
| Logical OR | e1 `\|\|` e2 | left | Logical OR. | 13 | | Logical OR | *e1* `\|\|` *e2* | left | Logical OR. | 13 |
| Logical Implication | e1 `->` e2 | none | Logical implication (equivalent to `!e1 \|\| | Logical Implication | *e1* `->` *e2* | none | Logical implication (equivalent to `!e1 \|\|
e2`). | 14 | e2`). | 14 |
Operators Operators

2
doc/manual/src/installation/building-source.md
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@ -17,7 +17,7 @@ command:
The installation path can be specified by passing the `--prefix=prefix` The installation path can be specified by passing the `--prefix=prefix`
to `configure`. The default installation directory is `/usr/local`. You to `configure`. The default installation directory is `/usr/local`. You
can change this to any location you like. You must have write permission can change this to any location you like. You must have write permission
to the prefix path. to the *prefix* path.
Nix keeps its *store* (the place where packages are stored) in Nix keeps its *store* (the place where packages are stored) in
`/nix/store` by default. This can be changed using `/nix/store` by default. This can be changed using

3
doc/manual/src/package-management/basic-package-mgmt.md
View file

@ -60,7 +60,8 @@ Nixpkgs tree using the `-f` flag:
$ nix-env -qaf /path/to/nixpkgs $ nix-env -qaf /path/to/nixpkgs
where /path/to/nixpkgs is where you’ve unpacked or checked out Nixpkgs. where */path/to/nixpkgs* is where you’ve unpacked or checked out
Nixpkgs.
You can select specific packages by name: You can select specific packages by name:

2
doc/manual/src/release-notes/rl-0.10.md
View file

@ -34,7 +34,7 @@
- `nix-env -i - `nix-env -i
pkgname` will now install the highest available version of pkgname` will now install the highest available version of
pkgname, rather than installing all available versions (which *pkgname*, rather than installing all available versions (which
would probably give collisions) (`NIX-31`). would probably give collisions) (`NIX-31`).
- `nix-env (-i|-u) --dry-run` now shows exactly which missing - `nix-env (-i|-u) --dry-run` now shows exactly which missing

4
doc/manual/src/release-notes/rl-0.12.md
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@ -41,10 +41,10 @@
- The garbage collector has a number of new options to allow only some - The garbage collector has a number of new options to allow only some
of the garbage to be deleted. The option `--max-freed N` tells the of the garbage to be deleted. The option `--max-freed N` tells the
collector to stop after at least N bytes have been deleted. The collector to stop after at least *N* bytes have been deleted. The
option `--max-links option `--max-links
N` tells it to stop after the link count on `/nix/store` has dropped N` tells it to stop after the link count on `/nix/store` has dropped
below N. This is useful for very large Nix stores on filesystems below *N*. This is useful for very large Nix stores on filesystems
with a 32000 subdirectories limit (like `ext3`). The option with a 32000 subdirectories limit (like `ext3`). The option
`--use-atime` causes store paths to be deleted in order of ascending `--use-atime` causes store paths to be deleted in order of ascending
last access time. This allows non-recently used stuff to be deleted. last access time. This allows non-recently used stuff to be deleted.

4
doc/manual/src/release-notes/rl-0.13.md
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@ -51,5 +51,5 @@ This is primarily a bug fix release. It has some new features:
option is used. option is used.
- The scoping rules for `inherit - The scoping rules for `inherit
(e) ...` in recursive attribute sets have changed. The expression e (e) ...` in recursive attribute sets have changed. The expression
can now refer to the attributes defined in the containing set. *e* can now refer to the attributes defined in the containing set.

2
doc/manual/src/release-notes/rl-0.16.md
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@ -15,7 +15,7 @@ This release has the following improvements:
`--cores `--cores
N` as well as a configuration setting `build-cores = N` as well as a configuration setting `build-cores =
N` that causes the environment variable `NIX_BUILD_CORES` to be set N` that causes the environment variable `NIX_BUILD_CORES` to be set
to N when the builder is invoked. The builder can use this at its to *N* when the builder is invoked. The builder can use this at its
discretion to perform a parallel build, e.g., by calling `make -j discretion to perform a parallel build, e.g., by calling `make -j
N`. In Nixpkgs, this can be enabled on a per-package basis by N`. In Nixpkgs, this can be enabled on a per-package basis by
setting the derivation attribute `enableParallelBuilding` to `true`. setting the derivation attribute `enableParallelBuilding` to `true`.

4
doc/manual/src/release-notes/rl-0.6.md
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@ -49,8 +49,8 @@
- New language construct: `with - New language construct: `with
E1; E1;
E2` brings all attributes defined in the attribute set E1 in E2` brings all attributes defined in the attribute set *E1* in
scope in E2. scope in *E2*.
- Added a `map` function. - Added a `map` function.

2
doc/manual/src/release-notes/rl-1.11.md
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@ -35,7 +35,7 @@ features:
derivations, and in `builtins.hashString`. derivations, and in `builtins.hashString`.
- The new flag `--option build-repeat - The new flag `--option build-repeat
N` will cause every build to be executed N+1 times. If the build N` will cause every build to be executed *N*+1 times. If the build
output differs between any round, the build is rejected, and the output differs between any round, the build is rejected, and the
output paths are not registered as valid. This is primarily useful output paths are not registered as valid. This is primarily useful
to verify build determinism. (We already had a `--check` option to to verify build determinism. (We already had a `--check` option to

2
doc/manual/src/release-notes/rl-1.4.md
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@ -10,7 +10,7 @@ There are also the following improvements:
- New built-in function: `builtins.hashString`. - New built-in function: `builtins.hashString`.
- Build logs are now stored in `/nix/var/log/nix/drvs/XX/`, where XX - Build logs are now stored in `/nix/var/log/nix/drvs/XX/`, where *XX*
is the first two characters of the derivation. This is useful on is the first two characters of the derivation. This is useful on
machines that keep a lot of build logs (such as Hydra servers). machines that keep a lot of build logs (such as Hydra servers).

4
doc/manual/src/release-notes/rl-1.6.1.md
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@ -6,8 +6,8 @@ This is primarily a bug fix release. Changes of interest are:
strings, such as `"${/foo}/bar"`. This release reverts to the Nix strings, such as `"${/foo}/bar"`. This release reverts to the Nix
1.5.3 behaviour. 1.5.3 behaviour.
- Previously, Nix optimised expressions such as `"${expr}"` to expr. - Previously, Nix optimised expressions such as `"${expr}"` to *expr*.
Thus it neither checked whether expr could be coerced to a string, Thus it neither checked whether *expr* could be coerced to a string,
nor applied such coercions. This meant that `"${123}"` evaluatued to nor applied such coercions. This meant that `"${123}"` evaluatued to
`123`, and `"${./foo}"` evaluated to `./foo` (even though `"${./foo} `123`, and `"${./foo}"` evaluated to `./foo` (even though `"${./foo}
"` evaluates to `"/nix/store/hash-foo "`). Nix now checks the type "` evaluates to `"/nix/store/hash-foo "`). Nix now checks the type

6
doc/manual/src/release-notes/rl-1.7.md
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@ -89,10 +89,10 @@ features:
specifier. For example, `nix-store --gc --max-freed specifier. For example, `nix-store --gc --max-freed
1G` will free up to 1 gigabyte of disk space. 1G` will free up to 1 gigabyte of disk space.
- `nix-collect-garbage` has a new flag `--delete-older-than` N`d`, - `nix-collect-garbage` has a new flag `--delete-older-than` *N*`d`,
which deletes all user environment generations older than N days. which deletes all user environment generations older than *N* days.
Likewise, `nix-env Likewise, `nix-env
--delete-generations` accepts a N`d` age limit. --delete-generations` accepts a *N*`d` age limit.
- Nix now heuristically detects whether a build failure was due to a - Nix now heuristically detects whether a build failure was due to a
disk-full condition. In that case, the build is not flagged as disk-full condition. In that case, the build is not flagged as