From 7361d1e535cf4c07e4a9fa352e27e76e3cfaca58 Mon Sep 17 00:00:00 2001
From: Chris Lamb <chris@chris-lamb.co.uk>
Date: Sat, 2 Jul 2016 21:11:41 +0200
Subject: [PATCH] Make the output reproducible.

When a document has not explicit date set, fallback to the SOURCE_DATE_EPOCH[0]
environment variable before using the current time.

 [0] https://reproducible-builds.org/specs/source-date-epoch/

Signed-off-by: Chris Lamb <chris@chris-lamb.co.uk>
Signed-off-by: Antonio Terceiro <terceiro@debian.org>
--- a/lib/ronn/document.rb
+++ b/lib/ronn/document.rb
@@ -181,6 +181,8 @@
     def date
       return @date if @date
 
+      return Time.at(ENV['SOURCE_DATE_EPOCH'].to_i).gmtime if ENV['SOURCE_DATE_EPOCH']
+
       return File.mtime(path) if File.exist?(path)
 
       Time.now