* Documented some of the sharing mechanisms.

1 files changed, 21 insertions, 0 deletions

diff --git a/doc/manual/env-common.xml b/doc/manual/env-common.xml
index fdfbaf59a..d6ebbf654 100644
--- a/doc/manual/env-common.xml
+++ b/doc/manual/env-common.xml
@@ -274,6 +274,27 @@ $ mount -o bind /mnt/otherdisk/nix /nix</screen>
 </varlistentry>
 
     
+<varlistentry xml:id="envar-other-stores"><term><envar>NIX_OTHER_STORES</envar></term>
+
+  <listitem><para>This variable contains the paths of remote Nix
+  installations from whichs paths can be copied, separated by colons.
+  See <xref linkend="sec-sharing-packages" /> for details.  Each path
+  should be the <filename>/nix</filename> directory of a remote Nix
+  installation (i.e., not the <filename>/nix/store</filename>
+  directory).  The paths are subject to globbing, so you can set it so
+  something like <literal>/var/run/nix/remote-stores/*/nix</literal>
+  and mount multiple remote filesystems in
+  <literal>/var/run/nix/remote-stores</literal>.</para>
+
+  <para>Note that if you’re building through the <link
+  linkend="sec-nix-worker">Nix daemon</link>, the only setting for
+  this variable that matters is the one that the
+  <command>nix-worker</command> process uses.  So if you want to
+  change it, you have to restart the daemon.</para></listitem>
+
+</varlistentry>
+
+    
 </variablelist>