[bug#40597] [PATCH] doc: Mention update-guix-package in guix-binary tarball, rebuild instructions.

[Vincent Legoll <vincent.legoll@gmail.com>]

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Hello,

following the discussion in guix-devel, here is a small doc
addition to explain how binary-tarball modifications can
be built and then tested...

WDYT ?

-- 
Vincent Legoll


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From dd961656d9bd98d11ba5e38be89cd1952fefc263 Mon Sep 17 00:00:00 2001
From: Vincent Legoll <vincent.legoll@gmail.com>
Date: Mon, 13 Apr 2020 14:25:57 +0200
Subject: [PATCH] doc: Mention update-guix-package in guix-binary tarball
 rebuild instructions.

* doc/guix.texi (Binary Installation): Mention 'make update-guix-package'.
---
 doc/guix.texi | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/doc/guix.texi b/doc/guix.texi
index 891e2693f6..8bf4ef9b74 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -77,6 +77,7 @@ Copyright @copyright{} 2020 Jakub Kądziołka@*
 Copyright @copyright{} 2020 Jack Hill@*
 Copyright @copyright{} 2020 Naga Malleswari@*
 Copyright @copyright{} 2020 Brice Waegeneire@*
+Copyright @copyright{} 2020 Vincent Legoll@*
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
@@ -736,6 +737,16 @@ guix pack -s @var{system} --localstatedir \
 
 @xref{Invoking guix pack}, for more info on this handy tool.
 
+If you have local modifications you want to include in the resulting
+tarball, you have to run the following command in your modified Guix
+source tree before doing the above:
+
+@example
+make update-guix-package
+git commit -m'NOT_FOR_UPSTREAM:allow testing a modified guix-binary' \
+  gnu/packages/package-management.scm
+@end example
+
 @node Requirements
 @section Requirements
 
-- 
2.20.1