From 45cd8e19dacb0938df505646d805bfcd6b723a41 Mon Sep 17 00:00:00 2001
From: Joshua Powers <josh.powers@canonical.com>
Date: Tue, 17 Dec 2019 14:21:36 -0800
Subject: doc: specify _ over - in cloud config modules

Start a design decision area in HACKING to capture highlevel decisions.
First example is to capture the use of _ over - in cloud config
modules.

LP: #1293254
---
 HACKING.rst | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/HACKING.rst b/HACKING.rst
index 8c8e518f..c74bd5af 100644
--- a/HACKING.rst
+++ b/HACKING.rst
@@ -125,3 +125,15 @@ have any questions.
 
 .. _tox: https://tox.readthedocs.io/en/latest/
 .. _Ubuntu Server: https://github.com/orgs/canonical/teams/ubuntu-server
+
+Design
+======
+
+This section captures design decisions that are helpful to know when
+hacking on cloud-init.
+
+Cloud Config Modules
+--------------------
+
+* Any new modules should use underscores in any new config options and not
+  hyphens (e.g. `new_option` and *not* `new-option`).
-- 
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