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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
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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>
<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
<literal>ssh://mac</literal>. For backward compatibility,
<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
file included in <option>builders</option> via the syntax
<literal>@<replaceable>file</replaceable></literal>. For example,
<literal>@<emphasis>file</emphasis></literal>. For example,
<programlisting>
builders = @/etc/nix/machines

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

@ -26,7 +26,7 @@
<listitem>
<para>
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),
or <filename>$NIX_CONF_DIR/nix.conf</filename> if
<literal>NIX_CONF_DIR</literal> is set. Values loaded in this
@ -52,11 +52,11 @@
</itemizedlist>
<para>The configuration files consist of
<literal><replaceable>name</replaceable> =
<replaceable>value</replaceable></literal> pairs, one per line. Other
<literal><emphasis>name</emphasis> =
<emphasis>value</emphasis></literal> pairs, one per line. Other
files can be included with a line like <literal>include
<replaceable>path</replaceable></literal>, where
<replaceable>path</replaceable> is interpreted relative to the current
<emphasis>path</emphasis></literal>, where
<emphasis>path</emphasis> is interpreted relative to the current
conf file and a missing file is an error unless
<literal>!include</literal> is used instead.
Comments start with a <literal>#</literal> character. Here is an
@ -244,7 +244,7 @@ false</literal>.</para>
instance, in Nixpkgs, if the derivation attribute
<varname>enableParallelBuilding</varname> is set to
<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
linkend='opt-cores'>--cores</option> command line switch and
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
hash. The default is
<literal>http://tarballs.nixos.org/</literal>. Given a hash type
<replaceable>ht</replaceable> and a base-16 hash
<replaceable>h</replaceable>, Nix will try to download the file
<emphasis>ht</emphasis> and a base-16 hash
<emphasis>h</emphasis>, Nix will try to download the file
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
from their original URI. For example, given the default mirror
<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
<filename>/nix/var/log/nix/drvs</filename>. The build log can be
retrieved using the command <command>nix-store -l
<replaceable>path</replaceable></command>.</para></listitem>
<emphasis>path</emphasis></command>.</para></listitem>
</varlistentry>
@ -592,9 +592,9 @@ builtins.fetchurl {
accounts in the following format:
<screen>
machine <replaceable>my-machine</replaceable>
login <replaceable>my-username</replaceable>
password <replaceable>my-password</replaceable>
machine <emphasis>my-machine</emphasis>
login <emphasis>my-username</emphasis>
password <emphasis>my-password</emphasis>
</screen>
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
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
instance, <literal>/bin=/nix-bin</literal> will mount the path
<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
<replaceable>source</replaceable> does not exist; for example,
<emphasis>source</emphasis> does not exist; for example,
<literal>/dev/nvidiactl?</literal> specifies that
<filename>/dev/nvidiactl</filename> will only be mounted in the
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
whitespace. These are not used by default, but can be enabled by
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
subset of the URLs listed in <literal>substituters</literal> and
<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
expressions enclosed in angle brackets (i.e.,
<literal>&lt;<replaceable>path</replaceable>></literal>). For
<literal>&lt;<emphasis>path</emphasis>></literal>). For
instance, the value
<screen>
@ -40,10 +40,10 @@
nixpkgs=/home/eelco/Dev/nixpkgs-branch:/etc/nixos</screen>
will cause Nix to search for
<literal>&lt;nixpkgs/<replaceable>path</replaceable>></literal> in
<filename>/home/eelco/Dev/nixpkgs-branch/<replaceable>path</replaceable></filename>
<literal>&lt;nixpkgs/<emphasis>path</emphasis>></literal> in
<filename>/home/eelco/Dev/nixpkgs-branch/<emphasis>path</emphasis></filename>
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
<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>
<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>
@ -114,7 +114,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
<listitem><para>Overrides the location of the Nix static data
directory (default
<filename><replaceable>prefix</replaceable>/share</filename>).</para></listitem>
<filename><emphasis>prefix</emphasis>/share</filename>).</para></listitem>
</varlistentry>
@ -122,7 +122,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
<varlistentry><term><literal>NIX_LOG_DIR</literal></term>
<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>
@ -130,7 +130,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
<varlistentry><term><literal>NIX_STATE_DIR</literal></term>
<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>
@ -139,7 +139,7 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
<listitem><para>Overrides the location of the system Nix configuration
directory (default
<filename><replaceable>prefix</replaceable>/etc/nix</filename>).</para></listitem>
<filename><emphasis>prefix</emphasis>/etc/nix</filename>).</para></listitem>
</varlistentry>

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

@ -20,14 +20,14 @@
<cmdsynopsis>
<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/*)" />
<arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
<arg><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
<arg><option>--arg</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg><option>--argstr</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg>
<group choice='req'>
<arg choice='plain'><option>--attr</option></arg>
<arg choice='plain'><option>-A</option></arg>
</group>
<replaceable>attrPath</replaceable>
<emphasis>attrPath</emphasis>
</arg>
<arg><option>--no-out-link</option></arg>
<arg><option>--dry-run</option></arg>
@ -36,16 +36,16 @@
<arg choice='plain'><option>--out-link</option></arg>
<arg choice='plain'><option>-o</option></arg>
</group>
<replaceable>outlink</replaceable>
<emphasis>outlink</emphasis>
</arg>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
<arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsection><title>Description</title>
<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
current directory. The symlink is called <filename>result</filename>.
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>,
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>
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
interpreted as the URL of a tarball that will be downloaded and
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 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
created from <filename>result</filename> to
<replaceable>outlink</replaceable>.</para></listitem>
<emphasis>outlink</emphasis>.</para></listitem>
</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
$ 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/
firefox firefox-config</screen>
@ -143,7 +143,7 @@ You can also build all outputs:
$ nix-build '&lt;nixpkgs>' -A openssl.all
</screen>
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>.
So if <literal>openssl</literal> has outputs <literal>out</literal>,
<literal>bin</literal> and <literal>man</literal>,

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

@ -20,11 +20,11 @@
<cmdsynopsis>
<command>nix-channel</command>
<group choice='req'>
<arg choice='plain'><option>--add</option> <replaceable>url</replaceable> <arg choice='opt'><replaceable>name</replaceable></arg></arg>
<arg choice='plain'><option>--remove</option> <replaceable>name</replaceable></arg>
<arg choice='plain'><option>--add</option> <emphasis>url</emphasis> <arg choice='opt'><emphasis>name</emphasis></arg></arg>
<arg choice='plain'><option>--remove</option> <emphasis>name</emphasis></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>--rollback</option> <arg choice='opt'><replaceable>generation</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'><emphasis>generation</emphasis></arg></arg>
</group>
</cmdsynopsis>
</refsynopsisdiv>
@ -44,22 +44,22 @@ xlink:href="https://nixos.org/channels" />.</para>
<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
<replaceable>name</replaceable> with URL
<replaceable>url</replaceable> to the list of subscribed channels.
If <replaceable>name</replaceable> is omitted, it defaults to the
last component of <replaceable>url</replaceable>, with the
<emphasis>name</emphasis> with URL
<emphasis>url</emphasis> to the list of subscribed channels.
If <emphasis>name</emphasis> is omitted, it defaults to the
last component of <emphasis>url</emphasis>, with the
suffixes <literal>-stable</literal> or
<literal>-unstable</literal> removed.</para></listitem>
</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
<replaceable>name</replaceable> from the list of subscribed
<emphasis>name</emphasis> from the list of subscribed
channels.</para></listitem>
</varlistentry>
@ -71,18 +71,18 @@ xlink:href="https://nixos.org/channels" />.</para>
</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
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
them from the directory
<filename>~/.nix-defexpr</filename>).</para></listitem>
</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
--update</command>. Optionally, you can specify a specific channel
@ -130,7 +130,7 @@ $ nix-instantiate --eval -E '(import &lt;nixpkgs> {}).lib.version'
<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
<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>
<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
a multi-user installation, you may also have
<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>
<arg><option>--delete-old</option></arg>
<arg><option>-d</option></arg>
<arg><option>--delete-older-than</option> <replaceable>period</replaceable></arg>
<arg><option>--max-freed</option> <replaceable>bytes</replaceable></arg>
<arg><option>--delete-older-than</option> <emphasis>period</emphasis></arg>
<arg><option>--max-freed</option> <emphasis>bytes</emphasis></arg>
<arg><option>--dry-run</option></arg>
</cmdsynopsis>
</refsynopsisdiv>
@ -39,7 +39,7 @@ which deletes all old generations of all profiles in
<literal>nix-env --delete-generations old</literal> on all profiles
(of course, this makes rollbacks to previous configurations
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
all generations older than the specified number of days in all profiles
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>
<arg><option>-v</option></arg>
<arg choice='plain'>
<replaceable>user@</replaceable><replaceable>machine</replaceable>
<emphasis>user@</emphasis><emphasis>machine</emphasis>
</arg>
<arg choice='plain'><replaceable>paths</replaceable></arg>
<arg choice='plain'><emphasis>paths</emphasis></arg>
</cmdsynopsis>
</refsynopsisdiv>
@ -44,13 +44,13 @@
<para><command>nix-copy-closure</command> gives you an easy and
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
those paths (i.e. all their dependencies in the Nix store), and copies
all paths in the closure to the remote machine via the
<command>ssh</command> (Secure Shell) command. With the
<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>
<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>
<listitem><para>Copy the closure of
<replaceable>paths</replaceable> from the local Nix store to the
Nix store on <replaceable>machine</replaceable>. This is the
<emphasis>paths</emphasis> from the local Nix store to the
Nix store on <emphasis>machine</emphasis>. This is the
default.</para></listitem>
</varlistentry>
@ -82,8 +82,8 @@ those paths. If this bothers you, use
<varlistentry><term><option>--from</option></term>
<listitem><para>Copy the closure of
<replaceable>paths</replaceable> from the Nix store on
<replaceable>machine</replaceable> to the local Nix
<emphasis>paths</emphasis> from the Nix store on
<emphasis>machine</emphasis> to the local Nix
store.</para></listitem>
</varlistentry>

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

@ -20,30 +20,30 @@
<cmdsynopsis>
<command>nix-env</command>
<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>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
<arg><option>--arg</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg><option>--argstr</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg>
<group choice='req'>
<arg choice='plain'><option>--file</option></arg>
<arg choice='plain'><option>-f</option></arg>
</group>
<replaceable>path</replaceable>
<emphasis>path</emphasis>
</arg>
<arg>
<group choice='req'>
<arg choice='plain'><option>--profile</option></arg>
<arg choice='plain'><option>-p</option></arg>
</group>
<replaceable>path</replaceable>
<emphasis>path</emphasis>
</arg>
<arg>
<arg choice='plain'><option>--system-filter</option></arg>
<replaceable>system</replaceable>
<emphasis>system</emphasis>
</arg>
<arg><option>--dry-run</option></arg>
<arg choice='plain'><replaceable>operation</replaceable></arg>
<arg rep='repeat'><replaceable>options</replaceable></arg>
<arg rep='repeat'><replaceable>arguments</replaceable></arg>
<arg choice='plain'><emphasis>operation</emphasis></arg>
<arg rep='repeat'><emphasis>options</emphasis></arg>
<arg rep='repeat'><emphasis>arguments</emphasis></arg>
</cmdsynopsis>
</refsynopsisdiv>
@ -146,7 +146,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
<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
the <emphasis>active Nix expression</emphasis>) used by the
@ -165,7 +165,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</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
operations that operate on a profile (designated below as the
@ -194,12 +194,12 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</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
--available</option> show derivations matching any platform. This
option allows you to use derivations for the specified platform
<replaceable>system</replaceable>.</para></listitem>
<emphasis>system</emphasis>.</para></listitem>
</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
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
<filename>~/.nix-profile/bin</filename> for the user environment
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>-r</option></arg>
</group>
<arg choice='plain' rep='repeat'><replaceable>args</replaceable></arg>
<arg choice='plain' rep='repeat'><emphasis>args</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -320,13 +320,13 @@ also <xref linkend="sec-common-options" />.</phrase></para>
<para>The install operation creates a new user environment, based on
the current generation of the active profile, to which a set of store
paths described by <replaceable>args</replaceable> is added. The
arguments <replaceable>args</replaceable> map to store paths in a
paths described by <emphasis>args</emphasis> is added. The
arguments <emphasis>args</emphasis> map to store paths in a
number of possible ways:
<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
expression. These are realised, and the resulting output paths are
installed. Currently installed derivations with a name equal to the
@ -335,7 +335,7 @@ number of possible ways:
specified.</para>
<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
the derivation with the highest <emphasis>priority</emphasis> is
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>
<listitem><para>If <option>--from-profile</option>
<replaceable>path</replaceable> is given,
<replaceable>args</replaceable> is a set of names denoting installed
store paths in the profile <replaceable>path</replaceable>. This is
<emphasis>path</emphasis> is given,
<emphasis>args</emphasis> is a set of names denoting installed
store paths in the profile <emphasis>path</emphasis>. This is
an easy way to copy user environment elements from one profile to
another.</para></listitem>
<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
active Nix expression as their single argument. The derivations
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
name.</para></listitem>
<listitem><para>If <replaceable>args</replaceable> are store
<listitem><para>If <emphasis>args</emphasis> are store
derivations, then these are <link
linkend="rsec-nix-store-realise">realised</link>, and the resulting
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
linkend="rsec-nix-store-realise">realised</link> and
installed.</para></listitem>
@ -518,7 +518,7 @@ $ nix-env -f '&lt;nixpkgs>' -iA hello --dry-run
installing ‘hello-2.10’
this path will be fetched (0.04 MiB download, 0.19 MiB unpacked):
/nix/store/wkhdf9jinag5750mqlax6z2zbwhqb76n-hello-2.10
<replaceable>...</replaceable></screen>
<emphasis>...</emphasis></screen>
</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>--always</option></arg>
</group>
<arg choice='plain' rep='repeat'><replaceable>args</replaceable></arg>
<arg choice='plain' rep='repeat'><emphasis>args</emphasis></arg>
</cmdsynopsis>
</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
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
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
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>
<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
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
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>-e</option></arg>
</group>
<arg choice='plain' rep='repeat'><replaceable>drvnames</replaceable></arg>
<arg choice='plain' rep='repeat'><emphasis>drvnames</emphasis></arg>
</cmdsynopsis>
</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
the current generation of the active profile, from which the store
paths designated by the symbolic names
<replaceable>names</replaceable> are removed.</para>
<emphasis>names</emphasis> are removed.</para>
</refsection>
@ -745,7 +745,7 @@ $ nix-env -e '.*' <lineannotation>(remove everything)</lineannotation></screen>
<cmdsynopsis>
<command>nix-env</command>
<arg choice='plain'><option>--set</option></arg>
<arg choice='plain'><replaceable>drvname</replaceable></arg>
<arg choice='plain'><emphasis>drvname</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -783,9 +783,9 @@ $ nix-env -p /nix/var/nix/profiles/browser --set firefox</screen>
<cmdsynopsis>
<command>nix-env</command>
<arg choice='plain'><option>--set-flag</option></arg>
<arg choice='plain'><replaceable>name</replaceable></arg>
<arg choice='plain'><replaceable>value</replaceable></arg>
<arg choice='plain' rep='repeat'><replaceable>drvnames</replaceable></arg>
<arg choice='plain'><emphasis>name</emphasis></arg>
<arg choice='plain'><emphasis>value</emphasis></arg>
<arg choice='plain' rep='repeat'><emphasis>drvnames</emphasis></arg>
</cmdsynopsis>
</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
installing `firefox-2.0.0.11'
building path(s) `/nix/store/myy0y59q3ig70dgq37jqwg1j0rsapzsl-user-environment'
collision between `/nix/store/<replaceable>...</replaceable>-firefox-2.0.0.11/bin/firefox'
and `/nix/store/<replaceable>...</replaceable>-firefox-2.0.0.9/bin/firefox'.
collision between `/nix/store/<emphasis>...</emphasis>-firefox-2.0.0.11/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>
$ 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>-A</option></arg>
</group>
<replaceable>attribute-path</replaceable>
<emphasis>attribute-path</emphasis>
</arg>
<sbr />
<arg choice='plain' rep='repeat'><replaceable>names</replaceable></arg>
<arg choice='plain' rep='repeat'><emphasis>names</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -959,7 +959,7 @@ profile (<option>--installed</option>), or the derivations that are
available for installation in the active Nix expression
(<option>--available</option>). It only prints information about
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>
attributes.</para>
@ -1086,21 +1086,21 @@ user environment elements, etc. -->
<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
or installed.</para></listitem>
</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
available or installed.</para></listitem>
</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
available or installed.</para></listitem>
@ -1174,7 +1174,7 @@ docbook-xml-4.2
firefox-1.0.4
MPlayer-1.0pre7
ORBit2-2.8.3
<replaceable>…</replaceable>
<emphasis>…</emphasis>
</screen>
</para>
@ -1187,7 +1187,7 @@ firefox-1.0.7
GConf-2.4.0.1
MPlayer-1.0pre7
ORBit2-2.8.3
<replaceable>…</replaceable>
<emphasis>…</emphasis>
</screen>
</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 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>
<replaceable>…</replaceable>
<emphasis>…</emphasis>
</screen>
</para>
@ -1218,11 +1218,11 @@ foo-1.2.3
<screen>
$ nix-env -qc
<replaceable>...</replaceable>
<emphasis>...</emphasis>
acrobat-reader-7.0 - ? <lineannotation>(package is not available at all)</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>
<replaceable>...</replaceable>
<emphasis>...</emphasis>
</screen>
</para>
@ -1234,7 +1234,7 @@ $ nix-env -qa '.*zip.*'
bzip2-1.0.6
gzip-1.6
zip-3.0
<replaceable>…</replaceable>
<emphasis>…</emphasis>
</screen>
</para>
@ -1248,7 +1248,7 @@ chromium-37.0.2062.94
chromium-beta-38.0.2125.24
firefox-32.0.3
firefox-with-plugins-13.0.1
<replaceable>…</replaceable>
<emphasis>…</emphasis>
</screen>
</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>-S</option></arg>
</group>
<arg choice='req'><replaceable>path</replaceable></arg>
<arg choice='req'><emphasis>path</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -1288,10 +1288,10 @@ $ nix-env -f https://github.com/NixOS/nixpkgs/archive/master.tar.gz -qa
<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
<filename>~/.nix-profile</filename> is made to point to
<replaceable>path</replaceable>.</para>
<emphasis>path</emphasis>.</para>
</refsection>
@ -1355,7 +1355,7 @@ $ nix-env --list-generations
<cmdsynopsis>
<command>nix-env</command>
<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>
</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>-G</option></arg>
</group>
<arg choice='req'><replaceable>generation</replaceable></arg>
<arg choice='req'><emphasis>generation</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -1416,13 +1416,13 @@ $ nix-env -p other_profile --delete-generations old</screen>
<refsection><title>Description</title>
<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
<filename><replaceable>profile</replaceable></filename> is the path to
<filename><emphasis>profile</emphasis></filename> is the path to
the active profile, then the symlink
<filename><replaceable>profile</replaceable></filename> is made to
<filename><emphasis>profile</emphasis></filename> is made 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
store.</para>

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

@ -22,18 +22,18 @@
<arg><option>--flat</option></arg>
<arg><option>--base32</option></arg>
<arg><option>--truncate</option></arg>
<arg><option>--type</option> <replaceable>hashAlgo</replaceable></arg>
<arg choice='plain' rep='repeat'><replaceable>path</replaceable></arg>
<arg><option>--type</option> <emphasis>hashAlgo</emphasis></arg>
<arg choice='plain' rep='repeat'><emphasis>path</emphasis></arg>
</cmdsynopsis>
<cmdsynopsis>
<command>nix-hash</command>
<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>
<command>nix-hash</command>
<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>
</refsynopsisdiv>
@ -42,7 +42,7 @@
<para>The command <command>nix-hash</command> computes the
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
available as well. The hash is printed in hexadecimal. To generate
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
linkend="refsec-nix-store-dump"><command>nix-store</command>
<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
<replaceable>path</replaceable> | md5sum</literal>.</para>
<emphasis>path</emphasis> | md5sum</literal>.</para>
</refsection>
@ -68,9 +68,9 @@ cryptographic hash as <literal>nix-store --dump
<varlistentry><term><option>--flat</option></term>
<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
<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
<command>sha1sum</command>.</para></listitem>
@ -92,7 +92,7 @@ cryptographic hash as <literal>nix-store --dump
</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,
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>
<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>
</varlistentry>
@ -112,7 +112,7 @@ cryptographic hash as <literal>nix-store --dump
<varlistentry><term><option>--to-base32</option></term>
<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>
</varlistentry>

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

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

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

@ -20,24 +20,24 @@
<cmdsynopsis>
<command>nix-prefetch-url</command>
<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>--unpack</option></arg>
<arg><option>--name</option> <replaceable>name</replaceable></arg>
<arg choice='plain'><replaceable>url</replaceable></arg>
<arg><replaceable>hash</replaceable></arg>
<arg><option>--name</option> <emphasis>name</emphasis></arg>
<arg choice='plain'><emphasis>url</emphasis></arg>
<arg><emphasis>hash</emphasis></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsection><title>Description</title>
<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
in the store is
<filename><replaceable>hash</replaceable>-<replaceable>baseName</replaceable></filename>,
where <replaceable>baseName</replaceable> is everything following the
final slash in <replaceable>url</replaceable>.</para>
<filename><emphasis>hash</emphasis>-<emphasis>baseName</emphasis></filename>,
where <emphasis>baseName</emphasis> is everything following the
final slash in <emphasis>url</emphasis>.</para>
<para>This command is just a convenience for Nix expression writers.
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
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
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
@ -67,7 +67,7 @@ downloaded file in the Nix store is also printed.</para>
<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,
which can be one of <literal>md5</literal>,
@ -93,14 +93,14 @@ downloaded file in the Nix store is also printed.</para>
</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
default, this is
<literal><replaceable>hash</replaceable>-<replaceable>basename</replaceable></literal>,
where <replaceable>basename</replaceable> is the last component of
<replaceable>url</replaceable>. Overriding the name is necessary
when <replaceable>basename</replaceable> contains characters that
<literal><emphasis>hash</emphasis>-<emphasis>basename</emphasis></literal>,
where <emphasis>basename</emphasis> is the last component of
<emphasis>url</emphasis>. Overriding the name is necessary
when <emphasis>basename</emphasis> contains characters that
are not allowed in Nix store paths.</para></listitem>
</varlistentry>

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

@ -19,20 +19,20 @@
<refsynopsisdiv>
<cmdsynopsis>
<command>nix-shell</command>
<arg><option>--arg</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
<arg><option>--argstr</option> <replaceable>name</replaceable> <replaceable>value</replaceable></arg>
<arg><option>--arg</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg><option>--argstr</option> <emphasis>name</emphasis> <emphasis>value</emphasis></arg>
<arg>
<group choice='req'>
<arg choice='plain'><option>--attr</option></arg>
<arg choice='plain'><option>-A</option></arg>
</group>
<replaceable>attrPath</replaceable>
<emphasis>attrPath</emphasis>
</arg>
<arg><option>--command</option> <replaceable>cmd</replaceable></arg>
<arg><option>--run</option> <replaceable>cmd</replaceable></arg>
<arg><option>--exclude</option> <replaceable>regexp</replaceable></arg>
<arg><option>--command</option> <emphasis>cmd</emphasis></arg>
<arg><option>--run</option> <emphasis>cmd</emphasis></arg>
<arg><option>--exclude</option> <emphasis>regexp</emphasis></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'>
<arg choice='plain'>
<group choice='req'>
@ -41,12 +41,12 @@
</group>
<arg choice='plain' rep='repeat'>
<group choice='req'>
<arg choice="plain"><replaceable>packages</replaceable></arg>
<arg choice="plain"><replaceable>expressions</replaceable></arg>
<arg choice="plain"><emphasis>packages</emphasis></arg>
<arg choice="plain"><emphasis>expressions</emphasis></arg>
</group>
</arg>
</arg>
<arg><replaceable>path</replaceable></arg>
<arg><emphasis>path</emphasis></arg>
</group>
</cmdsynopsis>
</refsynopsisdiv>
@ -57,17 +57,17 @@
dependencies of the specified derivation, but not the derivation
itself. It will then start an interactive shell in which all
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
sourced. This is useful for reproducing the environment of a
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
<filename>shell.nix</filename> if it exists, and
<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
interpreted as the URL of a tarball that will be downloaded and
unpacked to a temporary location. The tarball must include a single
@ -103,10 +103,10 @@ also <xref linkend="sec-common-options" />.</phrase></para>
<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
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
use a non-interactive shell instead.) However, a call to
<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><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
command in a non-interactive shell. This means (among other
@ -127,10 +127,10 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</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
matches the regular expression <replaceable>regexp</replaceable>.
matches the regular expression <emphasis>regexp</emphasis>.
This option may be specified multiple times.</para></listitem>
</varlistentry>
@ -150,7 +150,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</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
packages are present. The command line arguments are interpreted
@ -162,7 +162,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</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
<command>nix-shell</command>. Only applicable in
@ -171,7 +171,7 @@ also <xref linkend="sec-common-options" />.</phrase></para>
</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,
keep the listed environment variables.</para></listitem>
@ -278,13 +278,13 @@ following lines:
<programlisting>
#! /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>
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
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>
<para>The lines starting with <literal>#! nix-shell</literal> specify

122
doc/manual/command-ref/nix-store.xml
View file

@ -20,11 +20,11 @@
<cmdsynopsis>
<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/*)" />
<arg><option>--add-root</option> <replaceable>path</replaceable></arg>
<arg><option>--add-root</option> <emphasis>path</emphasis></arg>
<arg><option>--indirect</option></arg>
<arg choice='plain'><replaceable>operation</replaceable></arg>
<arg rep='repeat'><replaceable>options</replaceable></arg>
<arg rep='repeat'><replaceable>arguments</replaceable></arg>
<arg choice='plain'><emphasis>operation</emphasis></arg>
<arg rep='repeat'><emphasis>options</emphasis></arg>
<arg rep='repeat'><emphasis>arguments</emphasis></arg>
</cmdsynopsis>
</refsynopsisdiv>
@ -55,14 +55,14 @@ options.</phrase></para>
<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
(<option>--realise</option> and <option>--force-realise</option>)
to be registered as a root of the garbage collector<phrase
condition="manual"> (see <xref linkend="ssec-gc-roots"
/>)</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.,
typically in a subdirectory of
<filename>/nix/var/nix/gcroots/</filename>)
@ -88,11 +88,11 @@ options.</phrase></para>
garbage-collected unless the symlink is removed.</para>
<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,
<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
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>-r</option></arg>
</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>
</cmdsynopsis>
@ -204,7 +204,7 @@ printed.)</para>
with <option>-K</option>, if an output path is not identical to
the corresponding output from the previous build, the new output
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
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-dead</option></arg>
</group>
<arg><option>--max-freed</option> <replaceable>bytes</replaceable></arg>
<arg><option>--max-freed</option> <emphasis>bytes</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -413,11 +413,11 @@ options control what gets deleted and in what order:
<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
<replaceable>bytes</replaceable> bytes have been deleted, then
stop. The argument <replaceable>bytes</replaceable> can be
<emphasis>bytes</emphasis> bytes have been deleted, then
stop. The argument <emphasis>bytes</emphasis> can be
followed by the multiplicative suffix <literal>K</literal>,
<literal>M</literal>, <literal>G</literal> or
<literal>T</literal>, denoting KiB, MiB, GiB or TiB
@ -450,7 +450,7 @@ be freed.</para>
<screen>
$ nix-store --gc
deleting `/nix/store/kq82idx6g0nyzsp2s14gfsc38npai7lf-cairo-1.0.4.tar.gz.drv'
<replaceable>...</replaceable>
<emphasis>...</emphasis>
8825586 bytes freed (8.42 MiB)</screen>
</para>
@ -479,7 +479,7 @@ $ nix-store --gc --max-freed $((100 * 1024 * 1024))</screen>
<command>nix-store</command>
<arg choice='plain'><option>--delete</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>
</refsection>
@ -487,7 +487,7 @@ $ nix-store --gc --max-freed $((100 * 1024 * 1024))</screen>
<refsection><title>Description</title>
<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
the garbage collector. This means that you can only delete paths that
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>--graph</option></arg>
<arg choice='plain'><option>--tree</option></arg>
<arg choice='plain'><option>--binding</option> <replaceable>name</replaceable></arg>
<arg choice='plain'><option>-b</option> <replaceable>name</replaceable></arg>
<arg choice='plain'><option>--binding</option> <emphasis>name</emphasis></arg>
<arg choice='plain'><option>-b</option> <emphasis>name</emphasis></arg>
<arg choice='plain'><option>--hash</option></arg>
<arg choice='plain'><option>--size</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>--force-realise</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>
</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
<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
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
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
built.</para></listitem>
@ -614,7 +614,7 @@ query is applied to the target of the symlink.</para>
<listitem><para>Prints out the <link
linkend="gloss-closure">closure</link> of the store path
<replaceable>paths</replaceable>.</para>
<emphasis>paths</emphasis>.</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
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
<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>
<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
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
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>
<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
<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
<replaceable>paths</replaceable>.</para></listitem>
<emphasis>paths</emphasis>.</para></listitem>
</varlistentry>
@ -680,7 +680,7 @@ query is applied to the target of the symlink.</para>
<listitem><para>Prints the <link
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., in the case of a binary-only deployment), the string
<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>
<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
xlink:href="http://www.graphviz.org/">Graphviz package</link>.
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>
<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
flatten the tree, making it more readable. The query only
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>
<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.
This can be used to visualise dependency graphs. To obtain a
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><term><option>--binding</option> <replaceable>name</replaceable></term>
<term><option>-b</option> <replaceable>name</replaceable></term>
<varlistentry><term><option>--binding</option> <emphasis>name</emphasis></term>
<term><option>-b</option> <emphasis>name</emphasis></term>
<listitem><para>Prints the value of the attribute
<replaceable>name</replaceable> (i.e., environment variable) of
the store derivations <replaceable>paths</replaceable>. It is an
<emphasis>name</emphasis> (i.e., environment variable) of
the store derivations <emphasis>paths</emphasis>. It is an
error for a derivation to not have the specified
attribute.</para></listitem>
@ -738,7 +738,7 @@ query is applied to the target of the symlink.</para>
<varlistentry><term><option>--hash</option></term>
<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
paths). Since the hash is stored in the Nix database, this is a
fast operation.</para></listitem>
@ -748,7 +748,7 @@ query is applied to the target of the symlink.</para>
<varlistentry><term><option>--size</option></term>
<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
given paths. Note that the actual disk space required by the
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,
directly or indirectly, at the store paths
<replaceable>paths</replaceable>.</para></listitem>
<emphasis>paths</emphasis>.</para></listitem>
</varlistentry>
@ -778,7 +778,7 @@ query is applied to the target of the symlink.</para>
$ nix-store -qR $(which svn)
/nix/store/5mbglq5ldqld8sj57273aljwkfvj22mc-subversion-1.1.4
/nix/store/9lz9yc6zgmc0vlqmn2ipcpkjlmbi51vv-glibc-2.3.4
<replaceable>...</replaceable></screen>
<emphasis>...</emphasis></screen>
</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/07a2bzxmzwz5hp58nf03pahrv2ygwgs3-gcc-wrapper.sh
/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 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/570hmhmx3v57605cqg9yfvvyh0nnb8k8-bash
| +---/nix/store/p3srsbd8dx44v2pg6nbnszab5mcwx03v-builder.sh
<replaceable>...</replaceable></screen>
<emphasis>...</emphasis></screen>
</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/034a6h4vpz9kds5r6kzb9lhh81mscw43-libgnomeprintui-2.8.2
/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
dynamic libraries used by an ELF executable.</para>
@ -893,7 +893,7 @@ $ nix-store -q --roots $(which svn)
<cmdsynopsis>
<command>nix-store</command>
<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>
</refsection>
@ -926,8 +926,8 @@ $ nix-store --add ./foo.c
<command>nix-store</command>
<arg><option>--recursive</option></arg>
<arg choice='plain'><option>--add-fixed</option></arg>
<arg choice='plain'><replaceable>algorithm</replaceable></arg>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
<arg choice='plain'><emphasis>algorithm</emphasis></arg>
<arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -1039,7 +1039,7 @@ in Nix itself.</para>
<cmdsynopsis>
<command>nix-store</command>
<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>
</refsection>
@ -1077,7 +1077,7 @@ $ nix-store --verify-path $(nix-store -qR $(which svn))
<cmdsynopsis>
<command>nix-store</command>
<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>
</refsection>
@ -1123,7 +1123,7 @@ fetching path `/nix/store/d7a81wsm1ijwwpkks3725661h3263p5-glibc-2.13'...
<cmdsynopsis>
<command>nix-store</command>
<arg choice='plain'><option>--dump</option></arg>
<arg choice='plain'><replaceable>path</replaceable></arg>
<arg choice='plain'><emphasis>path</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -1131,7 +1131,7 @@ fetching path `/nix/store/d7a81wsm1ijwwpkks3725661h3263p5-glibc-2.13'...
<para>The operation <option>--dump</option> produces a NAR (Nix
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>
<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>
<command>nix-store</command>
<arg choice='plain'><option>--restore</option></arg>
<arg choice='plain'><replaceable>path</replaceable></arg>
<arg choice='plain'><emphasis>path</emphasis></arg>
</cmdsynopsis>
</refsection>
<refsection><title>Description</title>
<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>
</refsection>
@ -1198,7 +1198,7 @@ archive is read from standard input.</para>
<cmdsynopsis>
<command>nix-store</command>
<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>
</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:
<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:
@ -1299,7 +1299,7 @@ progress indication.</para>
<screen>
$ nix-store --optimise
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;
there are 114486 files with equal contents out of 215894 files in total
</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>-l</option></arg>
</group>
<arg choice='plain' rep='repeat'><replaceable>paths</replaceable></arg>
<arg choice='plain' rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -1351,7 +1351,7 @@ unpacking sources
unpacking source archive /nix/store/p8n1jpqs27mgkjw07pb5269717nzf5f8-ktorrent-2.2.1.tar.gz
ktorrent-2.2.1/
ktorrent-2.2.1/NEWS
<replaceable>...</replaceable>
<emphasis>...</emphasis>
</screen>
</refsection>
@ -1369,7 +1369,7 @@ ktorrent-2.2.1/NEWS
<cmdsynopsis>
<command>nix-store</command>
<arg choice='plain'><option>--dump-db</option></arg>
<arg rep='repeat'><replaceable>paths</replaceable></arg>
<arg rep='repeat'><emphasis>paths</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -1424,7 +1424,7 @@ loads it into the Nix database.</para>
<cmdsynopsis>
<command>nix-store</command>
<arg choice='plain'><option>--print-env</option></arg>
<arg choice='plain'><replaceable>drvpath</replaceable></arg>
<arg choice='plain'><emphasis>drvpath</emphasis></arg>
</cmdsynopsis>
</refsection>
@ -1441,7 +1441,7 @@ variable <literal>_args</literal>.</para>
<screen>
$ 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 stdenv; stdenv='/nix/store/7c8asx3yfrg5dg1gzhzyq2236zfgibnn-stdenv'
export system; system='x86_64-linux'

16
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View file

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

46
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View file

@ -92,12 +92,12 @@
</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>
<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>
@ -130,13 +130,13 @@
error. This option suppresses this behaviour. Note that the
builder's standard output and error are always written to a log file
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 xml:id="opt-max-jobs"><term><option>--max-jobs</option> / <option>-j</option>
<replaceable>number</replaceable></term>
<emphasis>number</emphasis></term>
<listitem>
@ -166,7 +166,7 @@
of parallelism. For instance, in Nixpkgs, if the derivation
attribute <varname>enableParallelBuilding</varname> is set to
<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
linkend='conf-cores'><literal>cores</literal></link>
configuration setting, if set, or <literal>1</literal> otherwise.
@ -271,7 +271,7 @@
</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
<command>nix-env</command>, <command>nix-instantiate</command>,
@ -280,14 +280,14 @@
automatically try to call functions that
it encounters. It can automatically call functions for which every
argument has a <link linkend='ss-functions'>default value</link>
(e.g., <literal>{ <replaceable>argName</replaceable> ?
<replaceable>defaultValue</replaceable> }:
<replaceable>...</replaceable></literal>). With
(e.g., <literal>{ <emphasis>argName</emphasis> ?
<emphasis>defaultValue</emphasis> }:
<emphasis>...</emphasis></literal>). With
<option>--arg</option>, you can also call functions that have
arguments without a default value (or override a default value).
That is, if the evaluator encounters a function with an argument
named <replaceable>name</replaceable>, it will call it with value
<replaceable>value</replaceable>.</para>
named <emphasis>name</emphasis>, it will call it with value
<emphasis>value</emphasis>.</para>
<para>For instance, the top-level <literal>default.nix</literal> in
Nixpkgs is actually a function:
@ -295,23 +295,23 @@
<programlisting>
{ # The system (e.g., `i686-linux') for which to build the packages.
system ? builtins.currentSystem
<replaceable>...</replaceable>
}: <replaceable>...</replaceable></programlisting>
<emphasis>...</emphasis>
}: <emphasis>...</emphasis></programlisting>
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
linkend='builtin-currentSystem'><literal>builtins.currentSystem</literal></link>
for the <literal>system</literal> argument. You can override this
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
string literal, you have to escape the quotes.)</para></listitem>
</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
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>
<replaceable>attrPath</replaceable></term>
<emphasis>attrPath</emphasis></term>
<listitem><para>Select an attribute from the top-level Nix
expression being evaluated. (<command>nix-env</command>,
<command>nix-instantiate</command>, <command>nix-build</command> and
<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
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><replaceable>e</replaceable>.xorg.xorgserver</literal> to
<literal><emphasis>e</emphasis>.xorg.xorgserver</literal> to
be used. See <link
linkend='refsec-nix-env-install-examples'><command>nix-env
--install</command></link> for some concrete examples.</para>
@ -366,7 +366,7 @@
</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
option may be given multiple times. See the <envar
@ -378,10 +378,10 @@
</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
<replaceable>name</replaceable> to <replaceable>value</replaceable>.
<emphasis>name</emphasis> to <emphasis>value</emphasis>.
This overrides settings in the Nix configuration file (see
<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>-E</option></arg>
<arg><option>--from-profile</option> <replaceable>path</replaceable></arg>
<arg><option>--from-profile</option> <emphasis>path</emphasis></arg>
</nop>

18
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View file

@ -91,12 +91,12 @@ disallowedRequisites = [ foobar ];
references graph of their inputs. The attribute is a list of
inputs in the Nix store whose references graph the builder needs
to know. The value of this attribute should be a list of pairs
<literal>[ <replaceable>name1</replaceable>
<replaceable>path1</replaceable> <replaceable>name2</replaceable>
<replaceable>path2</replaceable> <replaceable>...</replaceable>
<literal>[ <emphasis>name1</emphasis>
<emphasis>path1</emphasis> <emphasis>name2</emphasis>
<emphasis>path2</emphasis> <emphasis>...</emphasis>
]</literal>. The references graph of each
<replaceable>pathN</replaceable> will be stored in a text file
<replaceable>nameN</replaceable> in the temporary build directory.
<emphasis>pathN</emphasis> will be stored in a text file
<emphasis>nameN</emphasis> in the temporary build directory.
The text files have the format used by <command>nix-store
--register-validity</command> (with the deriver fields left
empty). For example, when the following derivation is built:
@ -135,7 +135,7 @@ derivation {
Nixpkgs has the line
<programlisting>
impureEnvVars = [ "http_proxy" "https_proxy" <replaceable>...</replaceable> ];
impureEnvVars = [ "http_proxy" "https_proxy" <emphasis>...</emphasis> ];
</programlisting>
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
temporary file containing <literal>a very long
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
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
<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
limit on the size of the environment (typically, a few hundred
kilobyte).</para></listitem>

2
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@ -58,7 +58,7 @@ steps:</para>
the <literal>PATH</literal>. The <literal>perl</literal> environment
variable points to the location of the Perl package (since it
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>
</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, ...,
z }: e</literal> where <varname>x</varname>, <varname>y</varname>,
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
function; when given the required arguments, the body should
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
key/value pairs where each key is a string and each value is an
arbitrary Nix expression. They take the general form <literal>{
<replaceable>name1</replaceable> =
<replaceable>expr1</replaceable>; <replaceable>...</replaceable>
<replaceable>nameN</replaceable> =
<replaceable>exprN</replaceable>; }</literal>.</para>
<emphasis>name1</emphasis> =
<emphasis>expr1</emphasis>; <emphasis>...</emphasis>
<emphasis>nameN</emphasis> =
<emphasis>exprN</emphasis>; }</literal>.</para>
</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
on.<footnote><para>How does it work? <filename>setup</filename>
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
environment variables they want; for instance, the setup hook for
Perl sets the <literal>PERL5LIB</literal> environment variable to

24
doc/manual/expressions/language-constructs.xml
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@ -137,7 +137,7 @@ while defining a set.</para>
<para>Functions have the following form:
<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
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>
for attributes, in which case they are allowed to be missing. A
default value is specified by writing
<literal><replaceable>name</replaceable> ?
<replaceable>e</replaceable></literal>, where
<replaceable>e</replaceable> is an arbitrary expression. For example,
<literal><emphasis>name</emphasis> ?
<emphasis>e</emphasis></literal>, where
<emphasis>e</emphasis> is an arbitrary expression. For example,
<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:
<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
<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:
<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
<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>
<para>Here is a Nix expression for the Subversion package that shows
@ -358,10 +358,10 @@ stdenv.mkDerivation {
<para>A <emphasis>with-expression</emphasis>,
<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
scope of the expression <replaceable>e2</replaceable>. For instance,
introduces the set <emphasis>e1</emphasis> into the lexical
scope of the expression <emphasis>e2</emphasis>. For instance,
<programlisting>
let as = { x = "foo"; y = "bar"; };

78
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View file

@ -25,48 +25,48 @@ weakest binding).</para>
<tbody>
<row>
<entry>Select</entry>
<entry><replaceable>e</replaceable> <literal>.</literal>
<replaceable>attrpath</replaceable>
[ <literal>or</literal> <replaceable>def</replaceable> ]
<entry><emphasis>e</emphasis> <literal>.</literal>
<emphasis>attrpath</emphasis>
[ <literal>or</literal> <emphasis>def</emphasis> ]
</entry>
<entry>none</entry>
<entry>Select attribute denoted by the attribute path
<replaceable>attrpath</replaceable> from set
<replaceable>e</replaceable>. (An attribute path is a
<emphasis>attrpath</emphasis> from set
<emphasis>e</emphasis>. (An attribute path is a
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>
<entry>1</entry>
</row>
<row>
<entry>Application</entry>
<entry><replaceable>e1</replaceable> <replaceable>e2</replaceable></entry>
<entry><emphasis>e1</emphasis> <emphasis>e2</emphasis></entry>
<entry>left</entry>
<entry>Call function <replaceable>e1</replaceable> with
argument <replaceable>e2</replaceable>.</entry>
<entry>Call function <emphasis>e1</emphasis> with
argument <emphasis>e2</emphasis>.</entry>
<entry>2</entry>
</row>
<row>
<entry>Arithmetic Negation</entry>
<entry><literal>-</literal> <replaceable>e</replaceable></entry>
<entry><literal>-</literal> <emphasis>e</emphasis></entry>
<entry>none</entry>
<entry>Arithmetic negation.</entry>
<entry>3</entry>
</row>
<row>
<entry>Has Attribute</entry>
<entry><replaceable>e</replaceable> <literal>?</literal>
<replaceable>attrpath</replaceable></entry>
<entry><emphasis>e</emphasis> <literal>?</literal>
<emphasis>attrpath</emphasis></entry>
<entry>none</entry>
<entry>Test whether set <replaceable>e</replaceable> contains
the attribute denoted by <replaceable>attrpath</replaceable>;
<entry>Test whether set <emphasis>e</emphasis> contains
the attribute denoted by <emphasis>attrpath</emphasis>;
return <literal>true</literal> or
<literal>false</literal>.</entry>
<entry>4</entry>
</row>
<row>
<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>List concatenation.</entry>
<entry>5</entry>
@ -74,7 +74,7 @@ weakest binding).</para>
<row>
<entry>Multiplication</entry>
<entry>
<replaceable>e1</replaceable> <literal>*</literal> <replaceable>e2</replaceable>,
<emphasis>e1</emphasis> <literal>*</literal> <emphasis>e2</emphasis>,
</entry>
<entry>left</entry>
<entry>Arithmetic multiplication.</entry>
@ -83,7 +83,7 @@ weakest binding).</para>
<row>
<entry>Division</entry>
<entry>
<replaceable>e1</replaceable> <literal>/</literal> <replaceable>e2</replaceable>
<emphasis>e1</emphasis> <literal>/</literal> <emphasis>e2</emphasis>
</entry>
<entry>left</entry>
<entry>Arithmetic division.</entry>
@ -92,7 +92,7 @@ weakest binding).</para>
<row>
<entry>Addition</entry>
<entry>
<replaceable>e1</replaceable> <literal>+</literal> <replaceable>e2</replaceable>
<emphasis>e1</emphasis> <literal>+</literal> <emphasis>e2</emphasis>
</entry>
<entry>left</entry>
<entry>Arithmetic addition.</entry>
@ -101,7 +101,7 @@ weakest binding).</para>
<row>
<entry>Subtraction</entry>
<entry>
<replaceable>e1</replaceable> <literal>-</literal> <replaceable>e2</replaceable>
<emphasis>e1</emphasis> <literal>-</literal> <emphasis>e2</emphasis>
</entry>
<entry>left</entry>
<entry>Arithmetic subtraction.</entry>
@ -110,7 +110,7 @@ weakest binding).</para>
<row>
<entry>String Concatenation</entry>
<entry>
<replaceable>string1</replaceable> <literal>+</literal> <replaceable>string2</replaceable>
<emphasis>string1</emphasis> <literal>+</literal> <emphasis>string2</emphasis>
</entry>
<entry>left</entry>
<entry>String concatenation.</entry>
@ -118,19 +118,19 @@ weakest binding).</para>
</row>
<row>
<entry>Not</entry>
<entry><literal>!</literal> <replaceable>e</replaceable></entry>
<entry><literal>!</literal> <emphasis>e</emphasis></entry>
<entry>none</entry>
<entry>Boolean negation.</entry>
<entry>8</entry>
</row>
<row>
<entry>Update</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>Return a set consisting of the attributes in
<replaceable>e1</replaceable> and
<replaceable>e2</replaceable> (with the latter taking
<emphasis>e1</emphasis> and
<emphasis>e2</emphasis> (with the latter taking
precedence over the former in case of equally named
attributes).</entry>
<entry>9</entry>
@ -138,7 +138,7 @@ weakest binding).</para>
<row>
<entry>Less Than</entry>
<entry>
<replaceable>e1</replaceable> <literal>&lt;</literal> <replaceable>e2</replaceable>,
<emphasis>e1</emphasis> <literal>&lt;</literal> <emphasis>e2</emphasis>,
</entry>
<entry>none</entry>
<entry>Arithmetic comparison.</entry>
@ -147,7 +147,7 @@ weakest binding).</para>
<row>
<entry>Less Than or Equal To</entry>
<entry>
<replaceable>e1</replaceable> <literal>&lt;=</literal> <replaceable>e2</replaceable>
<emphasis>e1</emphasis> <literal>&lt;=</literal> <emphasis>e2</emphasis>
</entry>
<entry>none</entry>
<entry>Arithmetic comparison.</entry>
@ -156,7 +156,7 @@ weakest binding).</para>
<row>
<entry>Greater Than</entry>
<entry>
<replaceable>e1</replaceable> <literal>&gt;</literal> <replaceable>e2</replaceable>
<emphasis>e1</emphasis> <literal>&gt;</literal> <emphasis>e2</emphasis>
</entry>
<entry>none</entry>
<entry>Arithmetic comparison.</entry>
@ -165,7 +165,7 @@ weakest binding).</para>
<row>
<entry>Greater Than or Equal To</entry>
<entry>
<replaceable>e1</replaceable> <literal>&gt;=</literal> <replaceable>e2</replaceable>
<emphasis>e1</emphasis> <literal>&gt;=</literal> <emphasis>e2</emphasis>
</entry>
<entry>none</entry>
<entry>Arithmetic comparison.</entry>
@ -174,7 +174,7 @@ weakest binding).</para>
<row>
<entry>Equality</entry>
<entry>
<replaceable>e1</replaceable> <literal>==</literal> <replaceable>e2</replaceable>
<emphasis>e1</emphasis> <literal>==</literal> <emphasis>e2</emphasis>
</entry>
<entry>none</entry>
<entry>Equality.</entry>
@ -183,7 +183,7 @@ weakest binding).</para>
<row>
<entry>Inequality</entry>
<entry>
<replaceable>e1</replaceable> <literal>!=</literal> <replaceable>e2</replaceable>
<emphasis>e1</emphasis> <literal>!=</literal> <emphasis>e2</emphasis>
</entry>
<entry>none</entry>
<entry>Inequality.</entry>
@ -191,28 +191,28 @@ weakest binding).</para>
</row>
<row>
<entry>Logical AND</entry>
<entry><replaceable>e1</replaceable> <literal>&amp;&amp;</literal>
<replaceable>e2</replaceable></entry>
<entry><emphasis>e1</emphasis> <literal>&amp;&amp;</literal>
<emphasis>e2</emphasis></entry>
<entry>left</entry>
<entry>Logical AND.</entry>
<entry>12</entry>
</row>
<row>
<entry>Logical OR</entry>
<entry><replaceable>e1</replaceable> <literal>||</literal>
<replaceable>e2</replaceable></entry>
<entry><emphasis>e1</emphasis> <literal>||</literal>
<emphasis>e2</emphasis></entry>
<entry>left</entry>
<entry>Logical OR.</entry>
<entry>13</entry>
</row>
<row>
<entry>Logical Implication</entry>
<entry><replaceable>e1</replaceable> <literal>-></literal>
<replaceable>e2</replaceable></entry>
<entry><emphasis>e1</emphasis> <literal>-></literal>
<emphasis>e2</emphasis></entry>
<entry>none</entry>
<entry>Logical implication (equivalent to
<literal>!<replaceable>e1</replaceable> ||
<replaceable>e2</replaceable></literal>).</entry>
<literal>!<emphasis>e1</emphasis> ||
<emphasis>e2</emphasis></literal>).</entry>
<entry>14</entry>
</row>
</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
enclosing it in
<literal>${<replaceable>...</replaceable>}</literal>, a feature
<literal>${<emphasis>...</emphasis>}</literal>, a feature
known as <emphasis>antiquotation</emphasis>. The enclosed
expression must evaluate to something that can be coerced into a
string (meaning that it must be a string, a path, or a
@ -93,7 +93,7 @@ configureFlags = "
text on the initial line.</para>
<para>Antiquotation
(<literal>${<replaceable>expr</replaceable>}</literal>) is
(<literal>${<emphasis>expr</emphasis>}</literal>) is
supported in indented strings.</para>
<para>Since <literal>${</literal> and <literal>''</literal> have
@ -119,7 +119,7 @@ configureFlags = "
<programlisting>
stdenv.mkDerivation {
<replaceable>...</replaceable>
<emphasis>...</emphasis>
postInstall =
''
mkdir $out/bin $out/etc
@ -127,7 +127,7 @@ stdenv.mkDerivation {
echo "Hello World" > $out/etc/foo.conf
${if enableBar then "cp bar $out/bin" else ""}
'';
<replaceable>...</replaceable>
<emphasis>...</emphasis>
}
</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/intl/
hello-2.1.1/intl/ChangeLog
<replaceable>...</replaceable>
<emphasis>...</emphasis>
$ ls -l result
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:
<screen>
$ ./configure <replaceable>options...</replaceable>
$ ./configure <emphasis>options...</emphasis>
$ make
$ make install</screen>
@ -26,16 +26,16 @@ $ ./bootstrap.sh</screen>
</para>
<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
<filename>/usr/local</filename>. You can change this to any location
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
packages are stored) in <filename>/nix/store</filename> by default.
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
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
<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>

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

@ -8,18 +8,18 @@
<para>To use Nix, some environment variables should be set. In
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
the Nix tools themselves, while <filename>~/.nix-profile</filename> is
a symbolic link to the current <emphasis>user environment</emphasis>
(an automatically generated package consisting of symlinks to
installed packages). The simplest way to set the required environment
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>
<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">

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

@ -421,7 +421,7 @@ LABEL=Nix\040Store /nix apfs rw,nobrowse
<para>
NixOS.org hosts version-specific installation URLs for all Nix
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>

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

@ -7,9 +7,9 @@
<title>Single-User Mode</title>
<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
<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
typically <systemitem class="username">root</systemitem>. (If you
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>
<screen>
$ nix-env --upgrade <replaceable>some-packages</replaceable>
$ nix-env --upgrade <emphasis>some-packages</emphasis>
$ nix-env --rollback
</screen>

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

@ -33,7 +33,7 @@ docbook-xml-4.5
firefox-33.0.2
hello-2.9
libxslt-1.1.28
<replaceable>...</replaceable></screen>
<emphasis>...</emphasis></screen>
</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:
<screen>
$ nix-env -qaf <replaceable>/path/to/nixpkgs</replaceable>
$ nix-env -qaf <emphasis>/path/to/nixpkgs</emphasis>
</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>
<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>
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
default to <command>nix-env</command> operations (via the symlink
<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
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
<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>
<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
followed and searched for roots, but symlinks to non-store paths
<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>
<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
<filename>~/.nix-profile</filename> that points to your current
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>
<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
<replaceable>pkgname</replaceable>, rather than installing all
<emphasis>pkgname</emphasis>, rather than installing all
available versions (which would probably give collisions)
(<literal>NIX-31</literal>).</para></listitem>
@ -85,7 +85,7 @@ irreversible.</para></warning>
"--with-freetype2-library=${freetype}/lib"</programlisting>
You can write arbitrary expressions within
<literal>${<replaceable>...</replaceable>}</literal>, not just
<literal>${<emphasis>...</emphasis>}</literal>, not just
identifiers.</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
test build of a package in Nixpkgs is <literal>nix-build
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
derivation.</para></listitem>
@ -173,13 +173,13 @@ irreversible.</para></warning>
<command>nix-build</command> evaluates to a function whose arguments
all have default values, the function will be called automatically.
Also, the new command-line switch <option>--arg
<replaceable>name</replaceable>
<replaceable>value</replaceable></option> can be used to specify
<emphasis>name</emphasis>
<emphasis>value</emphasis></option> can be used to specify
function arguments on the command line.</para></listitem>
<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>
@ -192,7 +192,7 @@ irreversible.</para></warning>
<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
<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
allow only some of the garbage to be deleted. The option
<option>--max-freed <replaceable>N</replaceable></option> tells the
collector to stop after at least <replaceable>N</replaceable> bytes
<option>--max-freed <emphasis>N</emphasis></option> tells the
collector to stop after at least <emphasis>N</emphasis> bytes
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
<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
<literal>ext3</literal>). The option <option>--use-atime</option>
causes store paths to be deleted in order of ascending last access
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
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
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
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
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
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-unpack-closure</command>. You can do almost the same
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;
closure</literal>.</para></listitem>

4
doc/manual/release-notes/rl-0.13.xml
View file

@ -95,9 +95,9 @@ features:</para>
<listitem>
<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
<replaceable>e</replaceable> can now refer to the attributes
<emphasis>e</emphasis> can now refer to the attributes
defined in the containing set.</para>
</listitem>

8
doc/manual/release-notes/rl-0.16.xml
View file

@ -27,14 +27,14 @@
2</command>), but this was not desirable because the number of
actions to be performed in parallel was not configurable. Nix
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 =
<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
<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
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
attribute <varname>enableParallelBuilding</varname> to
<literal>true</literal>.

8
doc/manual/release-notes/rl-0.6.xml
View file

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

4
doc/manual/release-notes/rl-0.8.xml
View file

@ -33,7 +33,7 @@ is too old (i.e., for Nix &lt;= 0.7)</screen>
then you should unsubscribe from the offending channel
(<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>channels</literal> replaced by <literal>channels-v3</literal>
(e.g., <link
@ -118,7 +118,7 @@ $ nix-store -q --referrers-closure \
subscribing to a channel.</para></listitem>
<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
(though exploiting possible parallelism between subderivations).
This is nice for build farms.</para></listitem>

4
doc/manual/release-notes/rl-1.1.xml
View file

@ -72,8 +72,8 @@
to get rid of the bootstrap binaries in the Nixpkgs source tree
and download them instead. You can use it by doing
<literal>import &lt;nix/fetchurl.nix> { url =
<replaceable>url</replaceable>; sha256 =
"<replaceable>hash</replaceable>"; }</literal>. (Shea Levy)</para>
<emphasis>url</emphasis>; sha256 =
"<emphasis>hash</emphasis>"; }</literal>. (Shea Levy)</para>
</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>
<para>
The new flag <option>--option build-repeat
<replaceable>N</replaceable></option> will cause every build to
be executed <replaceable>N</replaceable>+1 times. If the build
<emphasis>N</emphasis></option> will cause every build to
be executed <emphasis>N</emphasis>+1 times. If the build
output differs between any round, the build is rejected, and the
output paths are not registered as valid. This is primarily
useful to verify build determinism. (We already had a
@ -78,11 +78,11 @@ $ nix-prefetch-url -A nix-repl.src
<listitem>
<para>
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
<option>-K</option> is given, will make the output of the other
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
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>doc</literal>. Other packages can refer to a specific
output by referring to
<literal><replaceable>pkg</replaceable>.<replaceable>output</replaceable></literal>,
<literal><emphasis>pkg</emphasis>.<emphasis>output</emphasis></literal>,
e.g.
<programlisting>
buildInputs = [ pkg.lib pkg.headers ];

4
doc/manual/release-notes/rl-1.4.xml
View file

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

8
doc/manual/release-notes/rl-1.6.1.xml
View file

@ -19,15 +19,15 @@ are:</para>
<listitem>
<para>Previously, Nix optimised expressions such as
<literal>"${<replaceable>expr</replaceable>}"</literal> to
<replaceable>expr</replaceable>. Thus it neither checked whether
<replaceable>expr</replaceable> could be coerced to a string, nor
<literal>"${<emphasis>expr</emphasis>}"</literal> to
<emphasis>expr</emphasis>. Thus it neither checked whether
<emphasis>expr</emphasis> could be coerced to a string, nor
applied such coercions. This meant that
<literal>"${123}"</literal> evaluatued to <literal>123</literal>,
and <literal>"${./foo}"</literal> evaluated to
<literal>./foo</literal> (even though
<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
applies coercions.</para>
</listitem>

12
doc/manual/release-notes/rl-1.7.xml
View file

@ -34,7 +34,7 @@ following new features:</para>
<command>download-via-ssh</command>, that fetches binaries from
remote machines via SSH. Specifying the flags <literal>--option
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
them.</para>
</listitem>
@ -49,9 +49,9 @@ following new features:</para>
<screen>
$ nix-build '&lt;nixpkgs>' -A patchelf
<replaceable>…</replaceable>
<emphasis>…</emphasis>
$ nix-build '&lt;nixpkgs>' -A patchelf --check
<replaceable>…</replaceable>
<emphasis>…</emphasis>
error: derivation `/nix/store/1ipvxs…-patchelf-0.6' may not be deterministic:
hash mismatch in output `/nix/store/4pc1dm…-patchelf-0.6.drv'
</screen>
@ -173,11 +173,11 @@ $ nix-instantiate --eval '&lt;nixos>' -A 'config.systemd.units."nscd.service".te
<listitem>
<para><command>nix-collect-garbage</command> has a new flag
<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
<replaceable>N</replaceable> days. Likewise, <command>nix-env
<emphasis>N</emphasis> days. Likewise, <command>nix-env
--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>

4
doc/manual/release-notes/rl-1.8.xml
View file

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

12
doc/manual/release-notes/rl-2.0.xml
View file

@ -42,7 +42,7 @@
<para>The command <command>nix-push</command> has been removed as
part of the effort to eliminate Nix's dependency on Perl. You can
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>
@ -136,8 +136,8 @@
http-connections 100</literal> you can write
<literal>--http-connections 100</literal>. Boolean options can
be written as
<literal>--<replaceable>foo</replaceable></literal> or
<literal>--no-<replaceable>foo</replaceable></literal>
<literal>--<emphasis>foo</emphasis></literal> or
<literal>--no-<emphasis>foo</emphasis></literal>
(e.g. <option>--no-auto-optimise-store</option>).</para>
</listitem>
@ -551,7 +551,7 @@
is still supported for compatibility, but it is also possible to
specify builders in <command>nix.conf</command> by setting the
option <literal>builders =
@<replaceable>path</replaceable></literal>.</para>
@<emphasis>path</emphasis></literal>.</para>
</listitem>
<listitem>
@ -580,9 +580,9 @@
<listitem>
<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
<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>
will build the GNU Hello package from the
<literal>nixos-15.09</literal> channel. In the future, this may

10
doc/manual/src/command-ref/conf-file.md
View file

@ -28,8 +28,8 @@ By default Nix reads settings from the following places:
The configuration files consist of `name =
value` pairs, one per line. Other files can be included with a line like
`include
path`, where path is interpreted relative to the current conf file and a
missing file is an error unless `!include` is used instead. Comments
path`, where *path* is interpreted relative to the current conf file and
a missing file is an error unless `!include` is used instead. Comments
start with a `#` character. Here is an example configuration file:
keep-outputs = true # Nice for developers
@ -216,7 +216,7 @@ The following settings are currently available:
- `hashed-mirrors`
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
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
they have disappeared from their original URI. For example, given
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
use the syntax `target=source` to mount a path in a different
location in the sandbox; for instance, `/bin=/nix-bin` will mount
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;
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;
for example, `/dev/nvidiactl?` specifies that `/dev/nvidiactl` will
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
The `nix-build` command builds the derivations described by the Nix
expressions in paths. If the build succeeds, it places a symlink to the
result in the current directory. The symlink is called `result`. If
expressions in *paths*. If the build succeeds, it places a symlink to
the result in the current directory. The symlink is called `result`. If
there are multiple Nix expressions, or the Nix expressions evaluate to
multiple derivations, multiple sequentially numbered symlinks are
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.
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
to a temporary location. The tarball must include a single top-level
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`
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
`result` to outlink.
`result` to *outlink*.
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:
- `--add` url \[name\]
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
url, with the suffixes `-stable` or `-unstable` removed.
- `--add` *url* \[*name*\]
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
*url*, with the suffixes `-stable` or `-unstable` removed.
- `--remove` name
Removes the channel named name from the list of subscribed channels.
- `--remove` *name*
Removes the channel named *name* from the list of subscribed
channels.
- `--list`
Prints the names and URLs of all subscribed channels on standard
output.
- `--update` \[names…\]
- `--update` \[*names*…\]
Downloads the Nix expressions of all subscribed channels (or only
those included in names if specified) and makes them the default for
`nix-env` operations (by symlinking them from the directory
those included in *names* if specified) and makes them the default
for `nix-env` operations (by symlinking them from the directory
`~/.nix-defexpr`).
- `--rollback` \[generation\]
- `--rollback` \[*generation*\]
Reverts the previous call to `nix-channel
--update`. Optionally, you can specify a specific channel generation
number to restore.

2
doc/manual/src/command-ref/nix-collect-garbage.md
View file

@ -33,7 +33,7 @@ additional options: `-d` (`--delete-old`), which deletes all old
generations of all profiles in `/nix/var/nix/profiles` by invoking
`nix-env --delete-generations old` on all profiles (of course, this
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
all profiles in `/nix/var/nix/profiles` (except for the generations that
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
have an effect. See also [???](#sec-common-options).
- `--file` / `-f` path
- `--file` / `-f` *path*
Specifies the Nix expression (designated below as the *active Nix
expression*) used by the `--install`, `--upgrade`, and `--query
--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
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
a profile (designated below as the *active profile*). A profile is a
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
will be built from source (because no substitute is available).
- `--system-filter` system
- `--system-filter` *system*
By default, operations such as `--query
--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 -->
@ -200,17 +200,17 @@ args
The install operation creates a new user environment, based on the
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
number of possible ways:
described by *args* is added. The arguments *args* map to store paths in
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
output paths are installed. Currently installed derivations with a
name equal to the name of a derivation being added are removed
unless the option `--preserve-installed` is specified.
If there are multiple derivations matching a name in args that have
the same name (e.g., `gcc-3.3.6` and `gcc-4.1.1`), then the
If there are multiple derivations matching a name in *args* that
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
define a priority by declaring the `meta.priority` attribute. This
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,
use `nix-env -qaP`.
- If `--from-profile` path is given, args is a set of names denoting
installed store paths in the profile path. This is an easy way to
copy user environment elements from one profile to another.
- If `--from-profile` *path* is given, *args* is a set of names
denoting installed store paths in the profile *path*. This is an
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
expression as their single argument. The derivations returned by
those function calls are installed. This allows derivations to be
specified in an unambiguous way, which is necessary if there are
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
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.
- 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
current generation of the active profile, in which all store paths are
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
untouched; this is not an error. It is also not an error if an element
of args matches no installed derivations.
described by *args*. Paths for which there are no newer versions are
left untouched; this is not an error. It is also not an error if an
element of *args* matches no installed derivations.
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
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
paths with the same symbolic name, only the one with the highest version
is installed.
@ -462,7 +463,7 @@ drvnames
The uninstall operation creates a new user environment, based on the
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
@ -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
(`--installed`), or the derivations that are available for installation
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.
@ -696,14 +697,14 @@ derivation is shown unless `--no-name` is specified.
upgrades for installed packages are available in a Nix expression. A
column is added with the following meaning:
- `<` version
- `<` *version*
A newer version of the package is available or installed.
- `=` version
- `=` *version*
At most the same version of the package is available or
installed.
- `>` version
- `>` *version*
Only older versions of the package are available or installed.
- `- ?`
@ -806,8 +807,8 @@ path
## Description
This operation makes path the current profile for the user. That is, the
symlink `~/.nix-profile` is made to point to path.
This operation makes *path* the current profile for the user. That is,
the symlink `~/.nix-profile` is made to point to *path*.
## Examples
@ -882,9 +883,9 @@ generation
## Description
This operation makes generation number generation the current generation
of the active profile. That is, if the `profile` is the path to the
active profile, then the symlink `profile` is made to point to
This operation makes generation number *generation* the current
generation of the active profile. That is, if the `profile` is the path
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
environment in the Nix store.

14
doc/manual/src/command-ref/nix-hash.md
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@ -37,7 +37,7 @@ hash
# Description
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
is printed in hexadecimal. To generate the same hash as
`nix-prefetch-url` you have to specify multiple arguments, see below for
@ -55,9 +55,9 @@ path | md5sum`.
- `--flat`
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
result is identical to that produced by the GNU commands `md5sum`
and `sha1sum`.
*path*. That is, do not compute the hash over the dump of *path*.
The result is identical to that produced by the GNU commands
`md5sum` and `sha1sum`.
- `--base32`
Print the hash in a base-32 representation rather than hexadecimal.
@ -67,17 +67,17 @@ path | md5sum`.
- `--truncate`
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
`md5`, `sha1`, and `sha256`.
- `--to-base16`
Don’t hash anything, but convert the base-32 hash representation
hash to hexadecimal.
*hash* to hexadecimal.
- `--to-base32`
Don’t hash anything, but convert the hexadecimal hash representation
hash to base-32.
*hash* to base-32.
# Examples

8
doc/manual/src/command-ref/nix-instantiate.md
View file

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

22
doc/manual/src/command-ref/nix-prefetch-url.md
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@ -31,9 +31,9 @@ hash
# Description
The command `nix-prefetch-url` downloads the file referenced by the URL
url, prints its cryptographic hash, and copies it into the Nix store.
The file name in the store is `hash-baseName`, where baseName is
everything following the final slash in url.
*url*, prints its cryptographic hash, and copies it into the Nix store.
The file name in the store is `hash-baseName`, where *baseName* is
everything following the final slash in *url*.
This command is just a convenience for Nix expression writers. Often a
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
download can be avoided.
If hash is specified, then a download 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 error is signaled if the actual hash of the
file does not match the specified hash.
If *hash* is specified, then a download 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 error is signaled if the
actual hash of the file does not match the specified hash.
This command prints the hash on standard output. Additionally, if the
option `--print-path` is used, the path of the downloaded file in the
@ -55,7 +55,7 @@ Nix store is also printed.
# Options
- `--type` hashAlgo
- `--type` *hashAlgo*
Use the specified cryptographic hash algorithm, which can be one of
`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
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
`hash-basename`, where basename is the last component of url.
Overriding the name is necessary when basename contains characters
`hash-basename`, where *basename* is the last component of *url*.
Overriding the name is necessary when *basename* contains characters
that are not allowed in Nix store paths.
# Examples

30
doc/manual/src/command-ref/nix-shell.md
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@ -61,14 +61,14 @@ path
The command `nix-shell` will build the dependencies of the specified
derivation, but not the derivation itself. It will then start an
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
the environment of a derivation for development.
If path is not given, `nix-shell` defaults to `shell.nix` if it exists,
and `default.nix` otherwise.
If *path* is not given, `nix-shell` defaults to `shell.nix` if it
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
location. The tarball must include a single top-level directory
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
`nix-instantiate`. See also [???](#sec-common-options).
- `--command` cmd
In the environment of the derivation, run the shell command cmd.
- `--command` *cmd*
In the environment of the derivation, run the shell command *cmd*.
This command is executed in an interactive shell. (Use `--run` to
use a non-interactive shell instead.) However, a call to `exit` is
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
initialisation.
- `--run` cmd
- `--run` *cmd*
Like `--command`, but executes the command in a non-interactive
shell. This means (among other things) that if you hit Ctrl-C while
the command is running, the shell exits.
- `--exclude` regexp
- `--exclude` *regexp*
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`
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
there will affect the interactive shell.
- `--packages` / `-p` packages…
- `--packages` / `-p` *packages*…
Set up an environment in which the specified packages are present.
The command line arguments are interpreted as attribute names inside
the Nix Packages collection. Thus, `nix-shell -p libjpeg openjdk`
will start a shell in which the packages denoted by the attribute
names `libjpeg` and `openjdk` are present.
- `-i` interpreter
- `-i` *interpreter*
The chained script interpreter to be invoked by `nix-shell`. Only
applicable in `#!`-scripts (described
[below](#ssec-nix-shell-shebang)).
- `--keep` name
- `--keep` *name*
When a `--pure` shell is started, keep the listed environment
variables.
@ -199,10 +199,10 @@ done by starting the script with the following lines:
#! /usr/bin/env nix-shell
#! 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
initialised the environment, and packages are the attribute names of the
dependencies in Nixpkgs.
initialised the environment, and *packages* are the attribute names of
the dependencies in Nixpkgs.
The lines starting with `#! nix-shell` specify `nix-shell` options (see
above). Note that you cannot write `#! /usr/bin/env nix-shell -i ...`

80
doc/manual/src/command-ref/nix-store.md
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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
options.
- `--add-root` path
- `--add-root` *path*
Causes the result of a realisation (`--realise` and
`--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
garbage collector (i.e., typically in a subdirectory of
`/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
garbage-collected unless the symlink is removed.
The `--indirect` flag causes a uniquely named symlink to path to be
stored in `/nix/var/nix/gcroots/auto/`. For instance,
The `--indirect` flag causes a uniquely named symlink to *path* to
be stored in `/nix/var/nix/gcroots/auto/`. For instance,
$ 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
control what gets deleted and in what order:
- `--max-freed` bytes
Keep deleting paths until at least bytes bytes have been deleted,
then stop. The argument bytes can be followed by the multiplicative
suffix `K`, `M`, `G` or `T`, denoting KiB, MiB, GiB or TiB units.
- `--max-freed` *bytes*
Keep deleting paths until at least *bytes* bytes have been deleted,
then stop. The argument *bytes* can be followed by the
multiplicative suffix `K`, `M`, `G` or `T`, denoting KiB, MiB, GiB
or TiB units.
The behaviour of the collector is also influenced by the
[`keep-outputs`](#conf-keep-outputs) and
@ -303,7 +304,7 @@ paths
## 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
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,
@ -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
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
symlink.
@ -397,11 +398,11 @@ symlink.
- `--outputs`
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.
- `--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:
@ -419,29 +420,30 @@ symlink.
- `--references`
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`.)
- `--referrers`
Prints the set of *referrers* of the store paths paths, that is, the
store paths currently existing in the Nix store that refer to one of
paths. Note that contrary to the references, the set of referrers is
not constant; it can change as store paths are added or removed.
Prints the set of *referrers* of the store paths *paths*, that is,
the store paths currently existing in the Nix store that refer to
one of *paths*. Note that contrary to the references, the set of
referrers is not constant; it can change as store paths are added or
removed.
- `--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
indirectly refer to one of paths. These are all the path currently
in the Nix store that are dependent on paths.
indirectly refer to one of *paths*. These are all the path currently
in the Nix store that are dependent on *paths*.
- `--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
deriver is not known (e.g., in the case of a binary-only
deployment), the string `unknown-deriver` is printed.
- `--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
package](http://www.graphviz.org/). This can be used to visualise
dependency graphs. To obtain a build-time dependency graph, apply
@ -449,40 +451,40 @@ symlink.
apply it to an output path.
- `--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
tends to flatten the tree, making it more readable. The query only
recurses into a store path when it is first encountered; this
prevents a blowup of the tree representation of the graph.
- `--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
used to visualise dependency graphs. To obtain a build-time
dependency graph, apply this to a store derivation. To obtain a
runtime dependency graph, apply it to an output path.
- `--binding` name; `-b` name
Prints the value of the attribute name (i.e., environment variable)
of the store derivations paths. It is an error for a derivation to
not have the specified attribute.
- `--binding` *name*; `-b` *name*
Prints the value of the attribute *name* (i.e., environment
variable) of the store derivations *paths*. It is an error for a
derivation to not have the specified attribute.
- `--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
paths). Since the hash is stored in the Nix database, this is a fast
operation.
- `--size`
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
given paths. Note that the actual disk space required by the store
paths may be higher, especially on filesystems with large cluster
sizes.
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 given paths. Note that the actual disk space required by the
store paths may be higher, especially on filesystems with large
cluster sizes.
- `--roots`
Prints the garbage collector roots that point, directly or
indirectly, at the store paths paths.
indirectly, at the store paths *paths*.
## Examples
@ -708,8 +710,8 @@ path
## Description
The operation `--dump` produces a NAR (Nix ARchive) file containing the
contents of the file system tree rooted at path. The archive is written
to standard output.
contents of the file system tree rooted at *path*. The archive is
written to standard output.
A NAR archive is like a TAR or Zip archive, but it contains only the
information that Nix considers important. For instance, timestamps are
@ -745,8 +747,8 @@ path
## Description
The operation `--restore` unpacks a NAR archive to path, which must not
already exist. The archive is read from standard input.
The operation `--restore` unpacks a NAR archive to *path*, which must
not already exist. The archive is read from standard input.
# Operation `--export`

26
doc/manual/src/command-ref/opt-common.md
View file

@ -44,9 +44,9 @@ Most Nix commands accept the following command-line options:
This option may be specified repeatedly. See the previous verbosity
levels list.
- `--log-format` format
- `--log-format` *format*
This option can be used to change the output of the log format, with
format being one of:
*format* being one of:
- raw
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
`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
parallel to the specified number. Specify `auto` to use the number
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
operations will fail.
- `--arg` name value
- `--arg` *name* *value*
This option is accepted by `nix-env`, `nix-instantiate`, `nix-shell`
and `nix-build`. When evaluating Nix expressions, the expression
evaluator will automatically try to call functions that it
@ -153,8 +153,8 @@ Most Nix commands accept the following command-line options:
defaultValue }:
...`). With `--arg`, you can also call functions that have arguments
without a default value (or override a default value). That is, if
the evaluator encounters a function with an argument named name, it
will call it with value value.
the evaluator encounters a function with an argument named *name*,
it will call it with value *value*.
For instance, the top-level `default.nix` in Nixpkgs is actually a
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
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
but a string. So instead of `--arg system \"i686-linux\"` (the outer
quotes are to keep the shell happy) you can say `--argstr system
i686-linux`.
- `--attr` / `-A` attrPath
- `--attr` / `-A` *attrPath*
Select an attribute from the top-level Nix expression being
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
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
--install`](#refsec-nix-env-install-examples) for some concrete
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
instead.
- `-I` path
- `-I` *path*
Add a path to the Nix expression search path. This option may be
given multiple times. See the NIX\_PATH\</literal\> environment
variable for information on the semantics of the Nix search path.
Paths added through `-I` take precedence over `NIX_PATH`.
- `--option` name value
Set the Nix configuration option name to value. This overrides
- `--option` *name* *value*
Set the Nix configuration option *name* to *value*. This overrides
settings in the Nix configuration file (see nix.conf5).
- `--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
path1 name2
path2 ...
]`. The references graph of each pathN will be stored in a text file
nameN in the temporary build directory. The text files have the
format used by `nix-store
]`. The references graph of each *pathN* will be stored in a text
file *nameN* in the temporary build directory. The text files have
the format used by `nix-store
--register-validity` (with the deriver fields left empty). For
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
contain the absolute path to a temporary file containing `a very
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
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
systems impose a limit on the size of the environment (typically, a
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.
For instance, `derivation` is also available as `builtins.derivation`.
- `abort` s; `builtins.abort` s
Abort Nix expression evaluation, print error message s.
- `abort` *s*; `builtins.abort` *s*
Abort Nix expression evaluation, print error message *s*.
- `builtins.add` e1 e2
Return the sum of the numbers e1 and e2.
- `builtins.add` *e1* *e2*
Return the sum of the numbers *e1* and *e2*.
- `builtins.all` pred list
Return `true` if the function pred returns `true` for all elements
of list, and `false` otherwise.
- `builtins.all` *pred* *list*
Return `true` if the function *pred* returns `true` for all elements
of *list*, and `false` otherwise.
- `builtins.any` pred list
Return `true` if the function pred returns `true` for at least one
element of list, and `false` otherwise.
- `builtins.any` *pred* *list*
Return `true` if the function *pred* returns `true` for at least one
element of *list*, and `false` otherwise.
- `builtins.attrNames` set
Return the names of the attributes in the set set in an
- `builtins.attrNames` *set*
Return the names of the attributes in the set *set* in an
alphabetically sorted list. For instance, `builtins.attrNames { y
= 1; x = "foo"; }` evaluates to `[ "x" "y" ]`.
- `builtins.attrValues` set
Return the values of the attributes in the set set in the order
- `builtins.attrValues` *set*
Return the values of the attributes in the set *set* in the order
corresponding to the sorted attribute names.
- `baseNameOf` s
Return the *base name* of the string s, that is, everything
- `baseNameOf` *s*
Return the *base name* of the string *s*, that is, everything
following the final slash in the string. This is similar to the GNU
`basename` command.
- `builtins.bitAnd` e1 e2
Return the bitwise AND of the integers e1 and e2.
- `builtins.bitAnd` *e1* *e2*
Return the bitwise AND of the integers *e1* and *e2*.
- `builtins.bitOr` e1 e2
Return the bitwise OR of the integers e1 and e2.
- `builtins.bitOr` *e1* *e2*
Return the bitwise OR of the integers *e1* and *e2*.
- `builtins.bitXor` e1 e2
Return the bitwise XOR of the integers e1 and e2.
- `builtins.bitXor` *e1* *e2*
Return the bitwise XOR of the integers *e1* and *e2*.
- `builtins`
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
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
s1 is older than version s2, `0` if they are the same, and `1` if s1
is newer than s2. The version comparison algorithm is the same as
the one used by [`nix-env
*s1* is older than version *s2*, `0` if they are the same, and `1`
if *s1* is newer than *s2*. The version comparison algorithm is the
same as the one used by [`nix-env
-u`](#ssec-version-comparisons).
- `builtins.concatLists` lists
- `builtins.concatLists` *lists*
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,
e.g. `concatStringsSep "/"
["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
evaluated, such as `"i686-linux"` or `"x86_64-darwin"`.
- `builtins.deepSeq` e1 e2
- `builtins.deepSeq` *e1* *e2*
This is like `seq
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.
- `derivation` attrs; `builtins.derivation` attrs
- `derivation` *attrs*; `builtins.derivation` *attrs*
`derivation` is described in [???](#ssec-derivation).
- `dirOf` s; `builtins.dirOf` s
Return the directory part of the string s, that is, everything
- `dirOf` *s*; `builtins.dirOf` *s*
Return the directory part of the string *s*, that is, everything
before the final slash in the string. This is similar to the GNU
`dirname` command.
- `builtins.div` e1 e2
Return the quotient of the numbers e1 and e2.
- `builtins.div` *e1* *e2*
Return the quotient of the numbers *e1* and *e2*.
- `builtins.elem` x xs
Return `true` if a value equal to x occurs in the list xs, and
- `builtins.elem` *x* *xs*
Return `true` if a value equal to *x* occurs in the list *xs*, and
`false` otherwise.
- `builtins.elemAt` xs n
Return element n from the list xs. Elements are counted starting
- `builtins.elemAt` *xs* *n*
Return element *n* from the list *xs*. Elements are counted starting
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
file. This function is not available if [restricted evaluation
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
unpacked tree. The file must be a tape archive (`.tar`) compressed
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
mode](#conf-restrict-eval) is enabled.
- `builtins.fetchGit` args
Fetch a path from git. args can be a URL, in which case the HEAD of
the repo at that URL is fetched. Otherwise, it can be an attribute
with the following attributes (all except `url` optional):
- `builtins.fetchGit` *args*
Fetch a path from git. *args* can be a URL, in which case the HEAD
of the repo at that URL is fetched. Otherwise, it can be an
attribute with the following attributes (all except `url` optional):
- url
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*.
- `builtins.filter` f xs
Return a list consisting of the elements of xs for which the
function f returns `true`.
- `builtins.filter` *f* *xs*
Return a list consisting of the elements of *xs* for which the
function *f* returns `true`.
- `builtins.filterSource` e1 e2
- `builtins.filterSource` *e1* *e2*
This function allows you to copy sources into the Nix store while
filtering certain files. For instance, suppose that you want to use
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;
```
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
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
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
@ -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
cannot be copied to the Nix store, so if the predicate returns
`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,
e.g. `foldl’ op nul [x0 x1 x2 ...] = op (op
(op nul x0) x1) x2) ...`. The operator is applied strictly, i.e.,
its arguments are evaluated first. For example, `foldl’ (x: y: x +
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
by the function f. The value of each attribute is a Boolean denoting
whether the corresponding argument has a default value. For
by the function *f*. The value of each attribute is a Boolean
denoting whether the corresponding argument has a default value. For
instance, `functionArgs ({ x, y ? 123}: ...) = { x = false; y =
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:
...) = { }`.
- `builtins.fromJSON` e
- `builtins.fromJSON` *e*
Convert a JSON string to a Nix value. For example,
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;
}`.
- `builtins.genList` generator length
Generate list of size length, with each element i equal to the value
returned by generator `i`. For example,
- `builtins.genList` *generator* *length*
Generate list of size *length*, with each element *i* equal to the
value returned by *generator* `i`. For example,
builtins.genList (x: x * x) 5
returns the list `[ 0 1 4 9 16 ]`.
- `builtins.getAttr` s set
`getAttr` returns the attribute named s from set. Evaluation aborts
if the attribute doesn’t exist. This is a dynamic version of the `.`
operator, since s is an expression rather than an identifier.
- `builtins.getAttr` *s* *set*
`getAttr` returns the attribute named *s* from *set*. Evaluation
aborts if the attribute doesn’t exist. This is a dynamic version of
the `.` operator, since *s* is an expression rather than an
identifier.
- `builtins.getEnv` s
`getEnv` returns the value of the environment variable s, or an
- `builtins.getEnv` *s*
`getEnv` returns the value of the environment variable *s*, or an
empty string if the variable doesn’t exist. This function should be
used with care, as it can introduce all sorts of nasty environment
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
home directory.)
- `builtins.hasAttr` s set
`hasAttr` returns `true` if set has an attribute named s, and
- `builtins.hasAttr` *s* *set*
`hasAttr` returns `true` if *set* has an attribute named *s*, and
`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
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"`.
- `builtins.hashFile` type p
- `builtins.hashFile` *type* *p*
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
`"md5"`, `"sha1"`, `"sha256"` or `"sha512"`.
file at path *p*. The hash algorithm specified by *type* must be one
of `"md5"`, `"sha1"`, `"sha256"` or `"sha512"`.
- `builtins.head` list
- `builtins.head` *list*
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
empty by comparing it with `[]`.
- `import` path; `builtins.import` path
Load, parse and return the Nix expression in the file path. If path
is a directory, the file ` default.nix
- `import` *path*; `builtins.import` *path*
Load, parse and return the Nix expression in the file *path*. If
*path* is a directory, the file ` default.nix
` in that directory is loaded. Evaluation aborts if the file
doesn’t exist or contains an incorrect Nix expression. `import`
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.
> 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
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`;
any name would work.)
- `builtins.intersectAttrs` e1 e2
Return a set consisting of the attributes in the set e2 that also
exist in the set e1.
- `builtins.intersectAttrs` *e1* *e2*
Return a set consisting of the attributes in the set *e2* that also
exist in the set *e1*.
- `builtins.isAttrs` e
Return `true` if e evaluates to a set, and `false` otherwise.
- `builtins.isAttrs` *e*
Return `true` if *e* evaluates to a set, and `false` otherwise.
- `builtins.isList` e
Return `true` if e evaluates to a list, and `false` otherwise.
- `builtins.isList` *e*
Return `true` if *e* evaluates to a list, and `false` otherwise.
- `builtins.isFunction` e
Return `true` if e evaluates to a function, and `false` otherwise.
- `builtins.isFunction` *e*
Return `true` if *e* evaluates to a function, and `false` otherwise.
- `builtins.isString` e
Return `true` if e evaluates to a string, and `false` otherwise.
- `builtins.isString` *e*
Return `true` if *e* evaluates to a string, and `false` otherwise.
- `builtins.isInt` e
Return `true` if e evaluates to an int, and `false` otherwise.
- `builtins.isInt` *e*
Return `true` if *e* evaluates to an int, and `false` otherwise.
- `builtins.isFloat` e
Return `true` if e evaluates to a float, and `false` otherwise.
- `builtins.isFloat` *e*
Return `true` if *e* evaluates to a float, and `false` otherwise.
- `builtins.isBool` e
Return `true` if e evaluates to a bool, and `false` otherwise.
- `builtins.isBool` *e*
Return `true` if *e* evaluates to a bool, and `false` otherwise.
- `builtins.isPath` e
Return `true` if e evaluates to a path, and `false` otherwise.
- `builtins.isPath` *e*
Return `true` if *e* evaluates to a path, and `false` otherwise.
- `isNull` e; `builtins.isNull` e
Return `true` if e evaluates to `null`, and `false` otherwise.
- `isNull` *e*; `builtins.isNull` *e*
Return `true` if *e* evaluates to `null`, and `false` otherwise.
> **Warning**
>
> This function is *deprecated*; just write `e == null` instead.
- `builtins.length` e
Return the length of the list e.
- `builtins.length` *e*
Return the length of the list *e*.
- `builtins.lessThan` e1 e2
Return `true` if the number e1 is less than the number e2, and
`false` otherwise. Evaluation aborts if either e1 or e2 does not
- `builtins.lessThan` *e1* *e2*
Return `true` if the number *e1* is less than the number *e2*, and
`false` otherwise. Evaluation aborts if either *e1* or *e2* does not
evaluate to a number.
- `builtins.listToAttrs` e
- `builtins.listToAttrs` *e*
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
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; }
- `map` f list; `builtins.map` f list
Apply the function f to each element in the list list. For example,
- `map` *f* *list*; `builtins.map` *f* *list*
Apply the function *f* to each element in the list *list*. For
example,
map (x: "foo" + x) [ "bar" "bla" "abc" ]
evaluates to `[ "foobar" "foobla" "fooabc"
]`.
- `builtins.match` regex str
- `builtins.match` *regex* *str*
Returns a list if the [extended POSIX regular
expression](http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04)
regex matches str precisely, otherwise returns `null`. Each item in
the list is a regex group.
*regex* matches *str* precisely, otherwise returns `null`. Each item
in the list is a regex group.
builtins.match "ab" "abc"
@ -481,21 +484,21 @@ For instance, `derivation` is also available as `builtins.derivation`.
Evaluates to `[ "foo" ]`.
- `builtins.mul` e1 e2
Return the product of the numbers e1 and e2.
- `builtins.mul` *e1* *e2*
Return the product of the numbers *e1* and *e2*.
- `builtins.parseDrvName` s
Split the string s into a package name and version. The package name
is everything up to but not including the first dash followed by a
digit, and the version is everything following that dash. The result
is returned in a set `{ name, version }`. Thus,
- `builtins.parseDrvName` *s*
Split the string *s* into a package name and version. The package
name is everything up to but not including the first dash followed
by a digit, and the version is everything following that dash. The
result is returned in a set `{ name, version }`. Thus,
`builtins.parseDrvName "nix-0.12pre12876"` returns `{ name = "nix";
version = "0.12pre12876";
}`.
- `builtins.path` args
- `builtins.path` *args*
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
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
`pure-eval` nix config option is on.
- `builtins.pathExists` path
Return `true` if the path path exists at evaluation time, and
- `builtins.pathExists` *path*
Return `true` if the path *path* exists at evaluation time, and
`false` otherwise.
- `builtins.placeholder` output
Return a placeholder string for the specified output that will be
- `builtins.placeholder` *output*
Return a placeholder string for the specified *output* that will be
substituted by the corresponding output path at build time. Typical
outputs would be `"out"`, `"bin"` or `"dev"`.
- `builtins.readDir` path
Return the contents of the directory path as a set mapping directory
entries to the corresponding file type. For instance, if directory
`A` contains a regular file `B` and another directory `C`, then
`builtins.readDir
- `builtins.readDir` *path*
Return the contents of the directory *path* as a set mapping
directory entries to the corresponding file type. For instance, if
directory `A` contains a regular file `B` and another directory `C`,
then `builtins.readDir
./A` will return the set
{ 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"`,
`"directory"`, `"symlink"` and `"unknown"`.
- `builtins.readFile` path
Return the contents of the file path as a string.
- `builtins.readFile` *path*
Return the contents of the file *path* as a string.
- `removeAttrs` set list; `builtins.removeAttrs` set list
Remove the attributes listed in list from set. The attributes don’t
have to exist in set. For instance,
- `removeAttrs` *set* *list*; `builtins.removeAttrs` *set* *list*
Remove the attributes listed in *list* from *set*. The attributes
don’t have to exist in *set*. For instance,
removeAttrs { x = 1; y = 2; z = 3; } [ "a" "x" "z" ]
evaluates to `{ y = 2; }`.
- `builtins.replaceStrings` from to s
Given string s, replace every occurrence of the strings in from with
the corresponding string in to. For example,
- `builtins.replaceStrings` *from* *to* *s*
Given string *s*, replace every occurrence of the strings in *from*
with the corresponding string in *to*. For example,
builtins.replaceStrings ["oo" "a"] ["a" "i"] "foobar"
evaluates to `"fabir"`.
- `builtins.seq` e1 e2
Evaluate e1, then evaluate and return e2. This ensures that a
computation is strict in the value of e1.
- `builtins.seq` *e1* *e2*
Evaluate *e1*, then evaluate and return *e2*. This ensures that a
computation is strict in the value of *e1*.
- `builtins.sort` comparator list
Return list in sorted order. It repeatedly calls the function
comparator with two elements. The comparator should return `true` if
the first element is less than the second, and `false` otherwise.
- `builtins.sort` *comparator* *list*
Return *list* in sorted order. It repeatedly calls the function
*comparator* with two elements. The comparator should return `true`
if the first element is less than the second, and `false` otherwise.
For example,
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
deemed equal by the comparator.
- `builtins.split` regex str
- `builtins.split` *regex* *str*
Returns a list composed of non matched strings interleaved with the
lists of the [extended POSIX regular
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
a regex group.
*regex* matches of *str*. Each item in the lists of matched
sequences is a regex group.
builtins.split "(a)b" "abc"
@ -604,44 +607,44 @@ For instance, `derivation` is also available as `builtins.derivation`.
Evaluates to `[ " " [ "FOO" ] " " ]`.
- `builtins.splitVersion` s
- `builtins.splitVersion` *s*
Split a string representing a version into its components, by the
same version splitting logic underlying the version comparison in
[`nix-env -u`](#ssec-version-comparisons).
- `builtins.stringLength` e
Return the length of the string e. If e is not a string, evaluation
is aborted.
- `builtins.stringLength` *e*
Return the length of the string *e*. If *e* is not a string,
evaluation is aborted.
- `builtins.sub` e1 e2
Return the difference between the numbers e1 and e2.
- `builtins.sub` *e1* *e2*
Return the difference between the numbers *e1* and *e2*.
- `builtins.substring` start len s
Return the substring of s from character position start (zero-based)
up to but not including start + len. If start is greater than the
length of the string, an empty string is returned, and if start +
len lies beyond the end of the string, only the substring up to the
end of the string is returned. start must be non-negative. For
example,
- `builtins.substring` *start* *len* *s*
Return the substring of *s* from character position *start*
(zero-based) up to but not including *start + len*. If *start* is
greater than the length of the string, an empty string is returned,
and if *start + len* lies beyond the end of the string, only the
substring up to the end of the string is returned. *start* must be
non-negative. For example,
builtins.substring 0 3 "nixos"
evaluates to `"nix"`.
- `builtins.tail` list
- `builtins.tail` *list*
Return the second to last elements of a list; abort evaluation if
the argument isn’t a list or is an empty list.
- `throw` s; `builtins.throw` s
Throw an error message s. This usually aborts Nix expression
- `throw` *s*; `builtins.throw` *s*
Throw an error message *s*. This usually aborts Nix expression
evaluation, but in `nix-env -qa` and other commands that try to
evaluate a set of derivations to get information about those
derivations, a derivation that throws an error is silently skipped
(which is not the case for `abort`).
- `builtins.toFile` name s
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
- `builtins.toFile` *name* *s*
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
derivations. One application is to write builders “inline”. For
instance, the following Nix expression combines [???](#ex-hello-nix)
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
that.
- `builtins.toJSON` e
Return a string containing a JSON representation of e. Strings,
- `builtins.toJSON` *e*
Return a string containing a JSON representation of *e*. Strings,
integers, floats, booleans, nulls and lists are mapped to their JSON
equivalents. Sets (except derivations) are represented as objects.
Derivations are translated to a JSON string containing the
derivation’s output path. Paths are copied to the store and
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
path. For relative paths, use `./. + "/path"`.
- `toString` e; `builtins.toString` e
Convert the expression e to a string. e can be:
- `toString` *e*; `builtins.toString` *e*
Convert the expression *e* to a string. *e* can be:
- 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.
- `builtins.toXML` e
Return a string containing an XML representation of e. The main
- `builtins.toXML` *e*
Return a string containing an XML representation of *e*. The main
application for `toXML` is to communicate information with the
builder in a more structured format than plain environment
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
`xsltproc ${stylesheet}`.
- `builtins.trace` e1 e2
Evaluate e1 and print its abstract syntax representation on standard
error. Then return e2. This function is useful for debugging.
- `builtins.trace` *e1* *e2*
Evaluate *e1* and print its abstract syntax representation on
standard error. Then return *e2*. This function is useful for
debugging.
- `builtins.tryEval` e
Try to shallowly evaluate e. Return a set containing the attributes
`success` (`true` if e evaluated successfully, `false` if an error
was thrown) and `value`, equalling e if successful and `false`
otherwise. Note that this doesn't evaluate e deeply, so ` let e = {
x = throw ""; }; in (builtins.tryEval e).success
- `builtins.tryEval` *e*
Try to shallowly evaluate *e*. Return a set containing the
attributes `success` (`true` if *e* evaluated successfully, `false`
if an error was thrown) and `value`, equalling *e* if successful and
`false` otherwise. Note that this doesn't evaluate *e* deeply, so
` let e = { x = throw ""; }; in (builtins.tryEval e).success
` will be `true`. Using ` builtins.deepSeq
` one can get the expected result: `let e = { x = throw "";
}; in (builtins.tryEval (builtins.deepSeq e e)).success` will be
`false`.
- `builtins.typeOf` e
Return a string representing the type of the value e, namely
- `builtins.typeOf` *e*
Return a string representing the type of the value *e*, namely
`"int"`, `"bool"`, `"string"`, `"path"`, `"null"`, `"set"`,
`"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, ...,
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
the required arguments, the body should describe how to build an
instance of the Hello package.

14
doc/manual/src/expressions/language-constructs.md
View file

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

48
doc/manual/src/expressions/language-operators.md
View file

@ -4,29 +4,29 @@
expression language, in order of precedence (from strongest to weakest
binding).
| 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 |
| Application | e1 e2 | left | Call function e1 with argument e2. | 2 |
| 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 |
| List Concatenation | e1 `++` e2 | right | List concatenation. | 5 |
| Multiplication | e1 `*` e2, | left | Arithmetic multiplication. | 6 |
| Division | e1 `/` e2 | left | Arithmetic division. | 6 |
| Addition | e1 `+` e2 | left | Arithmetic addition. | 7 |
| Subtraction | e1 `-` e2 | left | Arithmetic subtraction. | 7 |
| String Concatenation | string1 `+` string2 | left | String concatenation. | 7 |
| 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 |
| Less Than | 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 or Equal To | e1 `>=` e2 | none | Arithmetic comparison. | 10 |
| Equality | e1 `==` e2 | none | Equality. | 11 |
| Inequality | e1 `!=` e2 | none | Inequality. | 11 |
| Logical AND | e1 `&&` e2 | left | Logical AND. | 12 |
| Logical OR | e1 `\|\|` e2 | left | Logical OR. | 13 |
| Logical Implication | e1 `->` e2 | none | Logical implication (equivalent to `!e1 \|\|
e2`). | 14 |
| 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 |
| Application | *e1* *e2* | left | Call function *e1* with argument *e2*. | 2 |
| 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 |
| List Concatenation | *e1* `++` *e2* | right | List concatenation. | 5 |
| Multiplication | *e1* `*` *e2*, | left | Arithmetic multiplication. | 6 |
| Division | *e1* `/` *e2* | left | Arithmetic division. | 6 |
| Addition | *e1* `+` *e2* | left | Arithmetic addition. | 7 |
| Subtraction | *e1* `-` *e2* | left | Arithmetic subtraction. | 7 |
| String Concatenation | *string1* `+` *string2* | left | String concatenation. | 7 |
| 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 |
| Less Than | *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 or Equal To | *e1* `>=` *e2* | none | Arithmetic comparison. | 10 |
| Equality | *e1* `==` *e2* | none | Equality. | 11 |
| Inequality | *e1* `!=` *e2* | none | Inequality. | 11 |
| Logical AND | *e1* `&&` *e2* | left | Logical AND. | 12 |
| Logical OR | *e1* `\|\|` *e2* | left | Logical OR. | 13 |
| Logical Implication | *e1* `->` *e2* | none | Logical implication (equivalent to `!e1 \|\|
e2`). | 14 |
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`
to `configure`. The default installation directory is `/usr/local`. You
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/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
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:

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

@ -34,7 +34,7 @@
- `nix-env -i
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`).
- `nix-env (-i|-u) --dry-run` now shows exactly which missing

4
doc/manual/src/release-notes/rl-0.12.md
View file

@ -41,10 +41,10 @@
- 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
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
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
`--use-atime` causes store paths to be deleted in order of ascending
last access time. This allows non-recently used stuff to be deleted.

4
doc/manual/src/release-notes/rl-0.13.md
View file

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

2
doc/manual/src/release-notes/rl-0.16.md
View file

@ -15,7 +15,7 @@ This release has the following improvements:
`--cores
N` as well as a configuration setting `build-cores =
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
N`. In Nixpkgs, this can be enabled on a per-package basis by
setting the derivation attribute `enableParallelBuilding` to `true`.

4
doc/manual/src/release-notes/rl-0.6.md
View file

@ -49,8 +49,8 @@
- New language construct: `with
E1;
E2` brings all attributes defined in the attribute set E1 in
scope in E2.
E2` brings all attributes defined in the attribute set *E1* in
scope in *E2*.
- Added a `map` function.

2
doc/manual/src/release-notes/rl-1.11.md
View file

@ -35,7 +35,7 @@ features:
derivations, and in `builtins.hashString`.
- 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 paths are not registered as valid. This is primarily useful
to verify build determinism. (We already had a `--check` option to

2
doc/manual/src/release-notes/rl-1.4.md
View file

@ -10,7 +10,7 @@ There are also the following improvements:
- 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
machines that keep a lot of build logs (such as Hydra servers).

4
doc/manual/src/release-notes/rl-1.6.1.md
View file

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

6
doc/manual/src/release-notes/rl-1.7.md
View file

@ -89,10 +89,10 @@ features:
specifier. For example, `nix-store --gc --max-freed
1G` will free up to 1 gigabyte of disk space.
- `nix-collect-garbage` has a new flag `--delete-older-than` N`d`,
which deletes all user environment generations older than N days.
- `nix-collect-garbage` has a new flag `--delete-older-than` *N*`d`,
which deletes all user environment generations older than *N* days.
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
disk-full condition. In that case, the build is not flagged as