provide a public interface for acquiring changelogs

[apt.git] / doc / apt.conf.5.xml

diff --git a/doc/apt.conf.5.xml b/doc/apt.conf.5.xml
index efe986ea8c33a8e8ec2a2f7c7ff51d25abd8597e..7d5f7e9b38ae55a6f64efe2b36e4ce40f132f2d9 100644 (file)
--- a/doc/apt.conf.5.xml
+++ b/doc/apt.conf.5.xml
@@ -618,6 +618,33 @@ DPkg::Pre-Install-Pkgs {"/usr/sbin/dpkg-preconfigure --apt";};
          </para></listitem>
      </varlistentry>
 
+     <varlistentry><term><option>Changelogs::URI</option> scope</term>
+       <listitem><para>
+         Acquiring changelogs can only be done if an URI is known from where to get them.
+         Preferable the Release file indicates this in a 'Changelogs' field. If this isn't
+         available the Label/Origin field of the Release file is used to check if a
+         <literal>Acquire::Changelogs::URI::Label::<replaceable>LABEL</replaceable></literal> or
+         <literal>Acquire::Changelogs::URI::Origin::<replaceable>ORIGIN</replaceable></literal> option
+         exists and if so this value is taken. The value in the Release file can be overridden
+         with <literal>Acquire::Changelogs::URI::Override::Label::<replaceable>LABEL</replaceable></literal>
+         or <literal>Acquire::Changelogs::URI::Override::Origin::<replaceable>ORIGIN</replaceable></literal>.
+
+         The value should be a normal URI to a text file, expect that package specific data is
+         replaced with the placeholder <literal>CHANGEPATH</literal>. The
+         value for it is: 1. if the package is from a component (e.g. <literal>main</literal>)
+         this is the first part otherwise it is omitted, 2. the first letter of source package name,
+         expect if the source package name starts with '<literal>lib</literal>' in which case it will
+         be the first four letters. 3. The complete source package name. 4. the complete name again and
+         5. the source version.
+         The first (if present), second, third and fourth part are separated by a slash ('<literal>/</literal>')
+         and between the fourth and fifth part is an underscore ('<literal>_</literal>').
+
+         The special value '<literal>no</literal>' is available for this option indicating that
+         this source can't be used to acquire changelog files from. Another source will be tried
+         if available in this case.
+       </para></listitem>
+    </varlistentry>
+
    </variablelist>
  </refsect1>