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Update the release notes

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Eelco Dolstra 2013-09-02 13:11:36 +02:00
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doc/manual/release-notes.xml
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@ -10,6 +10,9 @@
<section xml:id="ssec-relnotes-1.6.0"><title>Release 1.6.0 (TBA)</title>
<para>In addition to the usual bug fixes, this release has several new
features:</para>
<itemizedlist>
<listitem>
@ -38,6 +41,55 @@
from your regular shells.</para>
</listitem>
<listitem>
<para>The ‘<literal>with</literal>’ language construct is now more
lazy. It only evaluates its argument if a variable might actually
refer to an attribute in the argument. For instance, this now
works:
<programlisting>
let
pkgs = with pkgs; { foo = "old"; bar = foo; } // overrides;
overrides = { foo = "new"; };
in pkgs.bar
</programlisting>
This evaluates to <literal>"new"</literal>, while previously it
gave an “infinite recursion” error.</para>
</listitem>
<listitem>
<para>Nix now has proper integer arithmetic operators. For
instance, you can write <literal>x + y</literal> instead of
<literal>builtins.add x y</literal>, or <literal>x &lt;
y</literal> instead of <literal>builtins.lessThan x y</literal>.
The comparison operators also work on strings.</para>
</listitem>
<listitem>
<para>On 64-bit systems, Nix integers are now 64 bits rather than
32 bits.</para>
</listitem>
<listitem>
<para>When using the Nix daemon, the <command>nix-daemon</command>
worker process now runs on the same CPU as the client, on systems
that support setting CPU affinity. This gives a significant speedup
on some systems.</para>
</listitem>
<listitem>
<para>If a stack overflow occurs in the Nix evaluator, you now get
a proper error message (rather than “Segmentation fault”) on some
systems.</para>
</listitem>
<listitem>
<para>In addition to directories, you can now bind-mount regular
files in chroots through the (now misnamed) option
<option>build-chroot-dirs</option>.</para>
</listitem>
</itemizedlist>
</section>