Adding SOURCE_DATE_EPOCH on copyright year patch

debian/changelog

 python-tornado (5.1.1-3) UNRELEASED; urgency=medium
 
+  [ Ondřej Nový ]
   * Set TRAVIS env variable to "true"
 
- -- Ondřej Nový <onovy@debian.org>  Mon, 01 Oct 2018 20:18:14 +0200
+  [ Emmanuel Arias ]
+  * Adding-reproducible-copyright-years
+  * deleting last patch
+  * Use SOURCE_DATE_EPOCH if is on os.environ, either use
+    time.time() (UTC)
+
+ -- Emmanuel Arias <emamnuelarias30@gmail.com>  Fri, 28 Dec 2018 01:19:46 +0000
 
 python-tornado (5.1.1-2) unstable; urgency=medium
 

debian/patches/0006-Adding-SOURCE_DATE_EPOCH-on-copyright-year.patch

+From: Emmanuel Arias <emamnuelarias30@gmail.com>
+Date: Fri, 28 Dec 2018 01:18:28 +0000
+Subject: Adding SOURCE_DATE_EPOCH on copyright year
+
+---
+ docs/conf.py | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/docs/conf.py b/docs/conf.py
+index 33dfd68..fbd0784 100644
+--- a/docs/conf.py
++++ b/docs/conf.py
+@@ -8,7 +8,13 @@ import tornado
+ master_doc = "index"
+ 
+ project = "Tornado"
+-copyright = "2009-%s, The Tornado Authors" % time.strftime("%Y")
++
++year_copyright = time.gmtime(
++    int(os.environ.get(
++        'SOURCE_DATE_EPOCH', time.time()))
++    ).tm_year
++
++copyright = "2009-%d, The Tornado Authors" % year_copyright
+ 
+ version = release = tornado.version
+ 

debian/patches/series

@@ -3,3 +3,4 @@ ignoreuserwarning.patch
 fix-ftbfs-on-hurd.patch
 0006-Use-local-objects.inv-for-intersphinx-mapping.patch
 New_test_crt.patch
+0006-Adding-SOURCE_DATE_EPOCH-on-copyright-year.patch