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<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-1.10">
<title>Release 1.10 (September 3, 2015)</title>
<para>This is primarily a bug fix release. It also has a number of new
features:</para>
<itemizedlist>
<listitem>
<para>A number of builtin functions have been added to reduce
Nixpkgs/NixOS evaluation time and memory consumption:
<function>all</function>,
<function>any</function>,
<function>concatStringsSep</function>,
<function>foldl’</function>,
<function>genList</function>,
<function>replaceStrings</function>,
<function>sort</function>.
</para>
</listitem>
<listitem>
<para>The garbage collector is more robust when the disk is full.</para>
</listitem>
<listitem>
<para>Nix supports a new API for building derivations that doesn’t
require a <literal>.drv</literal> file to be present on disk; it
only requires an in-memory representation of the derivation. This
is used by the Hydra continuous build system to make remote builds
more efficient.</para>
</listitem>
<listitem>
<para>The function <literal><nix/fetchurl.nix></literal> now
uses a <emphasis>builtin</emphasis> builder (i.e. it doesn’t
require starting an external process; the download is performed by
Nix itself). This ensures that derivation paths don’t change when
Nix is upgraded, and obviates the need for ugly hacks to support
chroot execution.</para>
</listitem>
<listitem>
<para><option>--version -v</option> now prints some configuration
information, in particular what compile-time optional features are
enabled, and the paths of various directories.</para>
</listitem>
<listitem>
<para>Build users have their supplementary groups set correctly.</para>
</listitem>
</itemizedlist>
<para>This release has contributions from Eelco Dolstra, Guillaume
Maudoux, Iwan Aucamp, Jaka Hudoklin, Kirill Elagin, Ludovic Courtès,
Manolis Ragkousis, Nicolas B. Pierron and Shea Levy.</para>
</section>
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