lix/doc/manual/release-notes/rl-0.13.xml
2016-01-04 14:38:26 +01:00

107 lines
2.8 KiB
XML
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<section xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:xi="http://www.w3.org/2001/XInclude"
version="5.0"
xml:id="ssec-relnotes-0.13">
<title>Release 0.13 (2009-11-05)</title>
<para>This is primarily a bug fix release. It has some new
features:</para>
<itemizedlist>
<listitem>
<para>Syntactic sugar for writing nested attribute sets. Instead of
<programlisting>
{
foo = {
bar = 123;
xyzzy = true;
};
a = { b = { c = "d"; }; };
}
</programlisting>
you can write
<programlisting>
{
foo.bar = 123;
foo.xyzzy = true;
a.b.c = "d";
}
</programlisting>
This is useful, for instance, in NixOS configuration files.</para>
</listitem>
<listitem>
<para>Support for Nix channels generated by Hydra, the Nix-based
continuous build system. (Hydra generates NAR archives on the
fly, so the size and hash of these archives isnt known in
advance.)</para>
</listitem>
<listitem>
<para>Support <literal>i686-linux</literal> builds directly on
<literal>x86_64-linux</literal> Nix installations. This is
implemented using the <function>personality()</function> syscall,
which causes <command>uname</command> to return
<literal>i686</literal> in child processes.</para>
</listitem>
<listitem>
<para>Various improvements to the <literal>chroot</literal>
support. Building in a <literal>chroot</literal> works quite well
now.</para>
</listitem>
<listitem>
<para>Nix no longer blocks if it tries to build a path and another
process is already building the same path. Instead it tries to
build another buildable path first. This improves
parallelism.</para>
</listitem>
<listitem>
<para>Support for large (> 4 GiB) files in NAR archives.</para>
</listitem>
<listitem>
<para>Various (performance) improvements to the remote build
mechanism.</para>
</listitem>
<listitem>
<para>New primops: <varname>builtins.addErrorContext</varname> (to
add a string to stack traces — useful for debugging),
<varname>builtins.isBool</varname>,
<varname>builtins.isString</varname>,
<varname>builtins.isInt</varname>,
<varname>builtins.intersectAttrs</varname>.</para>
</listitem>
<listitem>
<para>OpenSolaris support (Sander van der Burg).</para>
</listitem>
<listitem>
<para>Stack traces are no longer displayed unless the
<option>--show-trace</option> option is used.</para>
</listitem>
<listitem>
<para>The scoping rules for <literal>inherit
(<replaceable>e</replaceable>) ...</literal> in recursive
attribute sets have changed. The expression
<replaceable>e</replaceable> can now refer to the attributes
defined in the containing set.</para>
</listitem>
</itemizedlist>
</section>