From 2207018df574e4b15e552a9ce174f13cc024b6a5 Mon Sep 17 00:00:00 2001
From: regnat <rg@regnat.ovh>
Date: Fri, 23 Apr 2021 10:28:26 +0200
Subject: [PATCH] (briefly) document how to build ca derivations

---
 doc/manual/src/expressions/advanced-attributes.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/manual/src/expressions/advanced-attributes.md b/doc/manual/src/expressions/advanced-attributes.md
index 31ebadda1..1b3c69da2 100644
--- a/doc/manual/src/expressions/advanced-attributes.md
+++ b/doc/manual/src/expressions/advanced-attributes.md
@@ -207,6 +207,14 @@ Derivations can declare some infrequently used optional attributes.
     the hash in either hexadecimal or base-32 notation. (See the
     [`nix-hash` command](../command-ref/nix-hash.md) for information
     about converting to and from base-32 notation.)
+    
+  - `__contentAddressed`
+    If this **experimental** attribute is set to true, then the derivation
+    outputs will be stored in a content-addressed location rather than the
+    traditional input-addressed one.
+    This only has an effect if the `ca-derivation` experimental feature is enabled.
+    
+    Setting this attribute also requires setting `outputHashMode` and `outputHashAlgo` like for *fixed-output derivations* (see above).
 
   - `passAsFile`  
     A list of names of attributes that should be passed via files rather