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authorGergely Risko <errge@nilcons.com>2014-08-21T21·46+0200
committerEelco Dolstra <eelco.dolstra@logicblox.com>2014-08-23T09·11+0200
commit4b0a720ddf05ba03c7ea94dc38bd5ec0ab1285dd (patch)
tree33d994c9817a50eba4a6d34e377124edeab63453
parentb224ac15201c57b40ea855f5a98b1bd166c1c7f6 (diff)
Document the "out" usage in allowedReferences
-rw-r--r--doc/manual/writing-nix-expressions.xml9
1 files changed, 5 insertions, 4 deletions
diff --git a/doc/manual/writing-nix-expressions.xml b/doc/manual/writing-nix-expressions.xml
index 6db2adcfa0c3..0470625ff6d3 100644
--- a/doc/manual/writing-nix-expressions.xml
+++ b/doc/manual/writing-nix-expressions.xml
@@ -1561,10 +1561,11 @@ allowedReferences = [];
 </programlisting>
 
     enforces that the output of a derivation cannot have any runtime
-    dependencies on its inputs.  This is used in NixOS to check that
-    generated files such as initial ramdisks for booting Linux don’t
-    have accidental dependencies on other paths in the Nix
-    store.</para></listitem>
+    dependencies on its inputs.  To allow an output to have a runtime
+    dependency on itself, use <literal>"out"</literal> as a list item.
+    This is used in NixOS to check that generated files such as
+    initial ramdisks for booting Linux don’t have accidental
+    dependencies on other paths in the Nix store.</para></listitem>
 
   </varlistentry>