Add option ‘extra-binary-caches’

This allows providing additional binary caches, useful in scripts like
Hydra's build reproduction scripts, in particular because untrusted
caches are ignored.

1 files changed, 14 insertions, 2 deletions

diff --git a/doc/manual/conf-file.xml b/doc/manual/conf-file.xml
index 4629e8eae0..932c339ebb 100644
--- a/doc/manual/conf-file.xml
+++ b/doc/manual/conf-file.xml
@@ -350,13 +350,25 @@ flag, e.g. <literal>--option gc-keep-outputs false</literal>.</para>
     whitespace.  These are not used by default, but can be enabled by
     users of the Nix daemon by specifying <literal>--option
     binary-caches <replaceable>urls</replaceable></literal> on the
-    command line.  Daemon users are only allowed to pass a subset of
-    the URLs listed in <literal>binary-caches</literal> and
+    command line.  Unprivileged users are only allowed to pass a
+    subset of the URLs listed in <literal>binary-caches</literal> and
     <literal>trusted-binary-caches</literal>.</para></listitem>
 
   </varlistentry>
 
 
+  <varlistentry><term><literal>extra-binary-caches</literal></term>
+
+    <listitem><para>Additional binary caches appended to those
+    specified in <option>binary-caches</option> and
+    <option>binary-caches-files</option>.  When used by unprivileged
+    users, untrusted binary caches (i.e. those not listed in
+    <option>trusted-binary-caches</option>) are silently
+    ignored.</para></listitem>
+
+  </varlistentry>
+
+
   <varlistentry><term><literal>binary-caches-parallel-connections</literal></term>
 
     <listitem><para>The maximum number of parallel HTTP connections