From 838d9a41cd5e68dcd778ca90d4837417c0c300c6 Mon Sep 17 00:00:00 2001
From: Jeremy Lecour <jlecour@evolix.fr>
Date: Thu, 12 Jan 2017 17:54:51 +0100
Subject: [PATCH] Convention for packages installation

---
 CONVENTIONS.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CONVENTIONS.md b/CONVENTIONS.md
index 6de69e5..93bea69 100644
--- a/CONVENTIONS.md
+++ b/CONVENTIONS.md
@@ -156,3 +156,9 @@ We also create a blank `zzz-evolinux-custom` file, with commented examples, to a
       force: no
 
 The source file or template shouldn't to be prefixed for ordering (eg. `z-` or `zzz-`). It's the task's responsibility to choose how destination files must be ordered.
+
+### packages installation
+
+When making a role or a task the necessary packages must be installed explicitly.
+
+For example for the "mysql" role we obviously need the MySQL packages, but we also need the "apg" package to generate new passwords. This package is installed by "evolinux-base" but the "mysql" role can be executed on a fresh server.