<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>