From 045eb8440964ab6dbd61c51e831edc9c7bb9ef2a Mon Sep 17 00:00:00 2001
From: Justin Humm <justin.humm@posteo.de>
Date: Tue, 3 Apr 2018 23:26:47 +0200
Subject: [PATCH] document that writeTextFile from Nixpkgs is an alternative to
 builtins.toFile

---
 doc/manual/expressions/builtins.xml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/doc/manual/expressions/builtins.xml b/doc/manual/expressions/builtins.xml
index 47b98460a..ac1fe7e2f 100644
--- a/doc/manual/expressions/builtins.xml
+++ b/doc/manual/expressions/builtins.xml
@@ -1203,7 +1203,10 @@ in foo</programlisting>
 
     This is not allowed because it would cause a cyclic dependency in
     the computation of the cryptographic hashes for
-    <varname>foo</varname> and <varname>bar</varname>.</para></listitem>
+    <varname>foo</varname> and <varname>bar</varname>.</para>
+    <para>It is also not possible to reference the result of a derivation. 
+    If you are using Nixpkgs, the <literal>writeTextFile</literal> function is able to 
+    do that.</para></listitem>
 
   </varlistentry>