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Diffstat (limited to 'doc/manual/release-notes.xml')
| -rw-r--r-- | doc/manual/release-notes.xml | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/doc/manual/release-notes.xml b/doc/manual/release-notes.xml index ea28436b877a..2564f48c8b94 100644 --- a/doc/manual/release-notes.xml +++ b/doc/manual/release-notes.xml @@ -49,6 +49,28 @@ $ nix-env -i thunderbird --option binary-caches http://nixos.org/binary-cache </listitem> <listitem> + <para>Multiple output support should now be usable. A derivation + can declare that it wants to produce multiple store paths by + saying something like +<programlisting> +outputs = [ "lib" "headers" "doc" ]; +</programlisting> + This will cause Nix to pass the intended store path of each output + to the builder through the environment variables + <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>, + e.g. +<programlisting> +buildInputs = [ pkg.lib pkg.headers ]; +</programlisting> + If you install a package with multiple outputs using + <command>nix-env</command>, each output path will be symlinked + into the user environment.</para> + </listitem> + + <listitem> <para>Dashes are now valid as part of identifiers and attribute names.</para> </listitem> @@ -82,6 +104,34 @@ $ mount -o remount,ro,bind /nix/store </listitem> <listitem> + <para>Store optimisation (replacing identical files in the store + with hard links) can now be done automatically every time a path + is added to the store. This is enabled by setting the + configuration option <literal>auto-optimise-store</literal> to + <literal>true</literal> (disabled by default).</para> + </listitem> + + <listitem> + <para>Nix now supports <command>xz</command> compression for NARs + in addition to <command>bzip2</command>. It compresses about 30% + better on typical archives and decompresses about twice as + fast.</para> + </listitem> + + <listitem> + <para>Basic Nix expression evaluation profiling: setting the + environment variable <envar>NIX_COUNT_CALLS</envar> to + <literal>1</literal> will cause Nix to print how many times each + primop or function was executed.</para> + </listitem> + + <listitem> + <para>New primops: <varname>concatLists</varname>, + <varname>elem</varname>, <varname>elemAt</varname> and + <varname>filter</varname>.</para> + </listitem> + + <listitem> <para>The command <command>nix-copy-closure</command> has a new flag <option>--use-substitutes</option> (<option>-s</option>) to download missing paths on the target machine using the substitute @@ -94,8 +144,20 @@ $ mount -o remount,ro,bind /nix/store worker in “slave” mode has been removed.</para> </listitem> + <listitem> + <para>The <option>--help</option> flag of every Nix command now + invokes <command>man</command>.</para> + </listitem> + + <listitem> + <para>Chroot builds are now supported on systemd machines.</para> + </listitem> + </itemizedlist> +<para>This release has contributions from Eelco Dolstra, Florian +Friesdorf, Mats Erik Andersson and Shea Levy.</para> + </section> |