From fe0915cf24a2bd2edd2b7d38d4ba85998e486f20 Mon Sep 17 00:00:00 2001
From: Julien Lepiller <julien@lepiller.eu>
Date: Mon, 1 May 2017 15:44:31 +0200
Subject: [PATCH] doc: Document (list package output) syntax in
operanting-system-packages.
* doc/guix.texi (Globally-Visible Packages): Document (PACKAGE OUTPUT) syntax.
---
doc/guix.texi | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/doc/guix.texi b/doc/guix.texi
index 79942d7cd17..4446909ed64 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -7761,7 +7761,19 @@ provides all the tools one would expect for basic user and administrator
tasks---including the GNU Core Utilities, the GNU Networking Utilities,
the GNU Zile lightweight text editor, @command{find}, @command{grep},
etc. The example above adds tcpdump to those, taken from the @code{(gnu
-packages admin)} module (@pxref{Package Modules}).
+packages admin)} module (@pxref{Package Modules}). The
+@code{(list package output)} syntax can be used to add a specific output
+of a package:
+
+@lisp
+(use-modules (gnu packages))
+(use-modules (gnu packages dns))
+
+(operating-system
+ ;; ...
+ (packages (cons (list bind "utils")
+ %base-packages)))
+@end lisp
@findex specification->package
Referring to packages by variable name, like @var{tcpdump} above, has
--
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