File mozilla-bmo1568145.patch of Package MozillaFirefox.16470

Author: Bernhard M. Wiedemann <bwiedemann suse de>
Date: 2019-07-22

Allow to override build date with SOURCE_DATE_EPOCH
in order to make builds reproducible.
See https://reproducible-builds.org/ for why this is good
and https://reproducible-builds.org/specs/source-date-epoch/
for the definition of this variable.

diff --git a/python/mozbuild/mozbuild/action/langpack_manifest.py b/python/mozbuild/mozbuild/action/langpack_manifest.py
--- a/python/mozbuild/mozbuild/action/langpack_manifest.py
+++ b/python/mozbuild/mozbuild/action/langpack_manifest.py
@@ -11,16 +11,17 @@
 from __future__ import absolute_import, print_function, unicode_literals
 
 import argparse
 import sys
 import os
 import json
 import io
 import datetime
+import time
 import requests
 import mozversioncontrol
 import mozpack.path as mozpath
 from mozpack.chrome.manifest import (
     Manifest,
     ManifestLocale,
     parse_manifest,
 )
@@ -94,17 +95,17 @@ def get_dt_from_hg(path):
 #    ts == "20170914215617"
 ###
 def get_timestamp_for_locale(path):
     dt = None
     if os.path.isdir(os.path.join(path, '.hg')):
         dt = get_dt_from_hg(path)
 
     if dt is None:
-        dt = datetime.datetime.utcnow()
+        dt = datetime.datetime.utcfromtimestamp(int(os.environ.get('SOURCE_DATE_EPOCH', time.time())))
 
     dt = dt.replace(microsecond=0)
     return dt.strftime("%Y%m%d%H%M%S")
 
 
 ###
 # Parses multiple defines files into a single key-value pair object.
 #
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