make mysql optional

debian/changelog

@@ -1,6 +1,7 @@
 gitlab (8.4.0+dfsg~rc2-2) UNRELEASED; urgency=medium
 
   * Add README.Debian to document debian specific changes
+  * Make mysql optional (Closes: #812345)
 
  -- Pirate Praveen <praveen@debian.org>  Fri, 22 Jan 2016 20:48:24 +0530
 

debian/conf/gitlab-debian.conf

@@ -1,3 +1,5 @@
+export RAILS_ENV=production
+export DB=postgres
 export gitlab_user=gitlab
 export gitlab_conf=/etc/gitlab.conf
 export gitlab_home=/usr/share/gitlab

debian/patches/0108-make-mysql-optional.patch

@@ -0,0 +1,25 @@
+From 85ec69dca3e07b27079efe1392574d7fb317186f Mon Sep 17 00:00:00 2001
+From: Pirate Praveen <praveen@debian.org>
+Date: Sat, 23 Jan 2016 10:14:15 -0500
+Subject: [PATCH] allow specifying DB choice via ENV variable
+
+---
+ Gemfile | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+Index: gitlab/Gemfile
+===================================================================
+--- gitlab.orig/Gemfile
++++ gitlab/Gemfile
+@@ -14,8 +14,9 @@ gem 'sprockets', '~> 3.3.0'
+ gem "default_value_for", "~> 3.0.0"
+ 
+ # Supported DBs
+-gem "mysql2", '~> 0.3.16', group: :mysql
+-gem "pg", '~> 0.18.2', group: :postgres
++ENV["DB"] ||= "mysql"
++gem "mysql2", '~> 0.3.16' if ENV["DB"] == "all" || ENV["DB"] == "mysql"
++gem "pg", '~> 0.18.2' if ENV["DB"] == "all" || ENV["DB"] == "postgres"
+ 
+ # Authentication libraries
+ gem 'devise',                 '~> 3.5.2'

debian/patches/series

@@ -11,5 +11,6 @@ loosen-rails-version.patch
 0100-remove-development-test.patch
 0102-loosen-octokit.patch
 0107-relax-omniauth-facebook.patch
+0108-make-mysql-optional.patch
 source-init-functions.patch
 0300-no-hard-coded-workhorse-path.patch

debian/postinst

@@ -54,9 +54,6 @@ case "$1" in
 
 	# Adjust database privileges
 	. /usr/lib/gitlab/scripts/grantpriv.sh
-	echo "Setting up environment varibales..."
-	export RAILS_ENV=production
-	export DB=postgres
 	
 	echo "Verifying we have all required libraries..."
 	su ${gitlab_user} -s /bin/sh -c	'bundle install --local'