GNU bug report logs - #66250
[PATCH] doc: Document specification->package+output.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Efraim Flashner <efraim <at> flashner.co.il>
Subject: bug#66250: closed (Re: [PATCH] doc: Document specification->package+output.)
Date: Fri, 13 Oct 2023 08:54:02 +0000

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Your bug report

#66250: [PATCH] doc: Document specification->package+output.

which was filed against the guix-patches package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 66250 <at> debbugs.gnu.org.

-- 
66250: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=66250
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Efraim Flashner <efraim <at> flashner.co.il>
To: 66250-done <at> debbugs.gnu.org
Subject: Re: [PATCH] doc: Document specification->package+output.
Date: Fri, 13 Oct 2023 11:53:19 +0300

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Patch pushed.

-- 
Efraim Flashner   <efraim <at> flashner.co.il>   רנשלפ םירפא
GPG key = A28B F40C 3E55 1372 662D  14F7 41AA E7DC CA3D 8351
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From: Efraim Flashner <efraim <at> flashner.co.il>
To: guix-patches <at> gnu.org
Cc: Efraim Flashner <efraim <at> flashner.co.il>
Subject: [PATCH] doc: Document specification->package+output.
Date: Thu, 28 Sep 2023 12:32:58 +0300

Reported by nutcase on IRC.

* doc/guix.texi (Using the Configuration System): Add a section about
using specification->package+output.
---
 doc/guix.texi | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/doc/guix.texi b/doc/guix.texi
index f49ed894a7..d9865f4ac0 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -16936,6 +16936,23 @@ Using the Configuration System
                     %base-packages)))
 @end lisp
 
+@findex specification->package+output
+When a package has more than one output it can be a challenge to refer to
+specific output instead of just to the standard @code{out} output.  For these
+situations one can use the @code{specification->package+output} procedure from
+the @code{(gnu packages)} module.  For example:
+
+@lisp
+(use-modules (gnu packages))
+
+(operating-system
+  ;; ...
+  (packages (append (map specification->package+output
+                         '("nss-certs" "git" "git:send-email"))
+                    %base-packages)))
+
+@end lisp
+
 @unnumberedsubsec System Services
 
 @cindex services

-- 
Efraim Flashner   <efraim <at> flashner.co.il>   רנשלפ םירפא
GPG key = A28B F40C 3E55 1372 662D  14F7 41AA E7DC CA3D 8351
Confidentiality cannot be guaranteed on emails sent or received unencrypted

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