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| -rw-r--r-- | doc/manual/release-notes.xml | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/doc/manual/release-notes.xml b/doc/manual/release-notes.xml index e44cea2f1113..6620ef26cc8d 100644 --- a/doc/manual/release-notes.xml +++ b/doc/manual/release-notes.xml @@ -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 < + 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> |