* Sync with the trunk.

6 files changed, 98 insertions, 3 deletions

diff --git a/doc/manual/conf-file.xml b/doc/manual/conf-file.xml
index 19e86808ec..cb47b99418 100644
--- a/doc/manual/conf-file.xml
+++ b/doc/manual/conf-file.xml
@@ -97,6 +97,25 @@ env-keep-derivations = false
   </varlistentry>
 
 
+  <varlistentry xml:id="conf-build-cores"><term><literal>build-cores</literal></term>
+
+    <listitem><para>Sets the value of the
+    <envar>NIX_BUILD_CORES</envar> environment variable in the
+    invocation of builders.  Builders can use this variable at their
+    discretion to control the maximum amount of parallelism.  For
+    instance, in Nixpkgs, if the derivation attribute
+    <varname>enableParallelBuilding</varname> is set to
+    <literal>true</literal>, the builder passes the
+    <option>-j<replaceable>N</replaceable></option> flag to GNU Make.
+    It can be overriden using the <option
+    linkend='opt-cores'>--cores</option> command line switch and
+    defaults to <literal>1</literal>.  The value <literal>0</literal>
+    means that the builder should use all available CPU cores in the
+    system.</para></listitem>
+
+  </varlistentry>
+
+
   <varlistentry xml:id="conf-build-max-silent-time"><term><literal>build-max-silent-time</literal></term>
 
     <listitem>
diff --git a/doc/manual/manual.xml b/doc/manual/manual.xml
index df926841aa..090a92ce6b 100644
--- a/doc/manual/manual.xml
+++ b/doc/manual/manual.xml
@@ -27,10 +27,11 @@
       <year>2007</year>
       <year>2008</year>
       <year>2009</year>
+      <year>2010</year>
       <holder>Eelco Dolstra</holder>
     </copyright>
 
-    <date>September 2009</date>
+    <date>August 2010</date>
     
   </info>
 
diff --git a/doc/manual/nix-push.xml b/doc/manual/nix-push.xml
index 1435c55949..d2a7e063e5 100644
--- a/doc/manual/nix-push.xml
+++ b/doc/manual/nix-push.xml
@@ -120,7 +120,7 @@ dependencies used in the build, such as compilers).</para>
 dependencies, we can do:
       
 <screen>
-$ nix-push <replaceable>urls</replaceable> $(nix-instantiate $(nix-store -r foo.nix))</screen>
+$ nix-push <replaceable>urls</replaceable> $(nix-store -r $(nix-instantiate foo.nix))</screen>
     
 </para>
 
diff --git a/doc/manual/opt-common-syn.xml b/doc/manual/opt-common-syn.xml
index 0412fcb6ab..da60288b2a 100644
--- a/doc/manual/opt-common-syn.xml
+++ b/doc/manual/opt-common-syn.xml
@@ -14,6 +14,10 @@
   <replaceable>number</replaceable>
 </arg>
 <arg>
+  <arg><option>--cores</option></arg>
+  <replaceable>number</replaceable>
+</arg>
+<arg>
   <arg><option>--max-silent-time</option></arg>
   <replaceable>number</replaceable>
 </arg>
diff --git a/doc/manual/opt-common.xml b/doc/manual/opt-common.xml
index 3be9f5dd5f..2d67162d7c 100644
--- a/doc/manual/opt-common.xml
+++ b/doc/manual/opt-common.xml
@@ -98,7 +98,25 @@
   linkend='conf-build-max-jobs'><literal>build-max-jobs</literal></link>
   configuration setting, which itself defaults to
   <literal>1</literal>.  A higher value is useful on SMP systems or to
-  exploit I/O latency.  </para></listitem>
+  exploit I/O latency.</para></listitem>
+  
+</varlistentry>
+
+
+<varlistentry xml:id="opt-cores"><term><option>--cores</option></term>
+
+  <listitem><para>Sets the value of the <envar>NIX_BUILD_CORES</envar>
+  environment variable in the invocation of builders.  Builders can
+  use this variable at their discretion to control the maximum amount
+  of parallelism.  For instance, in Nixpkgs, if the derivation
+  attribute <varname>enableParallelBuilding</varname> is set to
+  <literal>true</literal>, the builder passes the
+  <option>-j<replaceable>N</replaceable></option> flag to GNU Make.
+  It defaults to the value of the <link
+  linkend='conf-build-cores'><literal>build-cores</literal></link>
+  configuration setting, if set, or <literal>1</literal> otherwise.
+  The value <literal>0</literal> means that the builder should use all
+  available CPU cores in the system.</para></listitem>
   
 </varlistentry>
 
diff --git a/doc/manual/release-notes.xml b/doc/manual/release-notes.xml
index e795634404..5b1c30bf82 100644
--- a/doc/manual/release-notes.xml
+++ b/doc/manual/release-notes.xml
@@ -8,6 +8,59 @@
 
 <!--==================================================================-->
 
+<section xml:id="ssec-relnotes-0.16"><title>Release 0.16 (August 17, 2010)</title>
+
+<para>This release has the following improvements:</para>
+
+<itemizedlist>
+
+  <listitem>
+    <para>The Nix expression evaluator is now much faster in most
+    cases: typically, <link
+    xlink:href="http://www.mail-archive.com/nix-dev@cs.uu.nl/msg04113.html">3
+    to 8 times compared to the old implementation</link>.  It also
+    uses less memory.  It no longer depends on the ATerm
+    library.</para>
+  </listitem>
+
+  <listitem>
+    <para>
+      Support for configurable parallelism inside builders.  Build
+      scripts have always had the ability to perform multiple build
+      actions in parallel (for instance, by running <command>make -j
+      2</command>), but this was not desirable because the number of
+      actions to be performed in parallel was not configurable.  Nix
+      now has an option <option>--cores
+      <replaceable>N</replaceable></option> as well as a configuration
+      setting <varname>build-cores =
+      <replaceable>N</replaceable></varname> that causes the
+      environment variable <envar>NIX_BUILD_CORES</envar> to be set to
+      <replaceable>N</replaceable> when the builder is invoked.  The
+      builder can use this at its discretion to perform a parallel
+      build, e.g., by calling <command>make -j
+      <replaceable>N</replaceable></command>.  In Nixpkgs, this can be
+      enabled on a per-package basis by setting the derivation
+      attribute <varname>enableParallelBuilding</varname> to
+      <literal>true</literal>.
+    </para>
+  </listitem>
+
+  <listitem>
+    <para><command>nix-store -q</command> now supports XML output
+    through the <option>--xml</option> flag.</para>
+  </listitem>
+
+  <listitem>
+    <para>Several bug fixes.</para>
+  </listitem>
+
+</itemizedlist>
+
+</section>
+
+
+<!--==================================================================-->
+
 <section xml:id="ssec-relnotes-0.15"><title>Release 0.15 (March 17, 2010)</title>
 
 <para>This is a bug-fix release.  Among other things, it fixes