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make build reproducible

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see https://reproducible-builds.org/ for why this is good
This commit is contained in:
Bernhard M. Wiedemann 2017-01-17 18:32:28 +00:00 committed by Bernhard M. Wiedemann
parent fcf7df069d
commit 29b37fb310
1 changed files with 5 additions and 1 deletions
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6
utils/update_build_version.py
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@ -33,10 +33,12 @@ from __future__ import print_function
import datetime
import errno
import os
import os.path
import re
import subprocess
import sys
import time
def mkdir_p(directory):
@ -108,7 +110,9 @@ def describe(directory):
return command_output(
['git', 'rev-parse', 'HEAD'], directory).rstrip().decode()
except:
return 'unknown hash, {}'.format(datetime.date.today().isoformat())
return 'unknown hash, {}'.format(datetime.date.fromtimestamp(
int(os.environ.get('SOURCE_DATE_EPOCH', time.time()))
).isoformat())
def main():