From b011d40bb939545f14f7ed237342304a4a34a7ab Mon Sep 17 00:00:00 2001
From: Christoph Groth <christoph.groth@cea.fr>
Date: Fri, 28 Apr 2017 10:30:10 +0200
Subject: [PATCH] enable the source package when adding the PPA

---
 content/install.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/install.rst b/content/install.rst
index ad3c419..fa9a5e1 100644
--- a/content/install.rst
+++ b/content/install.rst
@@ -105,7 +105,7 @@ Ubuntu and derivatives
 
 Execute the following commands::
 
-    sudo apt-add-repository ppa:kwant-project/ppa
+    sudo apt-add-repository -s ppa:kwant-project/ppa
     sudo apt-get update
     sudo apt-get install python3-kwant python-kwant-doc
 
-- 
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