Bug#706772: dpkg --set-selections ignores available packages never installed or removed by dpkg

[Jonathan Nieder <jrnieder@gmail.com>]

Guillem Jover wrote:

> Ah, much better indeed, thanks Jonathan.

Thanks for the quick review.  Here's the same change in patch form,
with two tweaks:

 - s/machine architecture/architecture/
 - add missing "the" before "sync-available command"

Index: issues.dbk
===================================================================
--- issues.dbk	(révision 10063)
+++ issues.dbk	(copie de travail)
@@ -384,6 +384,24 @@
   </para>
 </section>
 
+<section id="dpkg-set-selections">
+  <title><command>dpkg --set-selections</command> changes</title>
+  <para>
+    The <command>dpkg --set-selections</command> command is now aware of the
+    architecture of packages it selects and can only set the state for known
+    packages. Therefore an up-to-date <filename>available</filename>
+    database is needed for the command to be useful.
+  </para>
+  <para>
+    To update the <filename>available</filename> database on an
+    <systemitem role="package">apt</systemitem>-based system, run the
+    <command>sync-available</command> command from the
+    <systemitem role="package">dctrl-tools</systemitem> package.
+    See the <ulink url="&url-wiki;Teams/Dpkg/FAQ">dpkg FAQ</ulink>
+    for more information.
+  </para>
+</section>
+
 <section id="cyrus-sasl">
   <title>Cyrus SASL SQL backends</title>
   <para>