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Prevent the extension manifests from embedding the current date.
This is inspired by the Debian
"Use-build-id-as-langpack-version-for-reproducibility.patch" maintained for
their Firefox package as well as reproducible-builds.org guidelines from
https://reproducible-builds.org/docs/source-date-epoch/.
Upstream status: https://phabricator.services.mozilla.com/D169979
--- ./python/mozbuild/mozbuild/action/langpack_manifest.py.old 2023-02-13 11:01:21.051537347 -0500
+++ ./python/mozbuild/mozbuild/action/langpack_manifest.py 2023-02-13 11:04:33.141817330 -0500
@@ -36,6 +36,15 @@
pushlog_api_url = "{0}/json-rev/{1}"
+import os
+import time
+import datetime
+
+def get_build_date():
+ """Honor SOURCE_DATE_EPOCH for reproducibility."""
+ return datetime.datetime.utcfromtimestamp(
+ int(os.environ.get('SOURCE_DATE_EPOCH', time.time())))
+
###
# Retrievers a UTC datetime of the push for the current commit
# from a mercurial clone directory.
@@ -54,7 +63,7 @@
with mozversioncontrol.get_repository_object(path=path) as repo:
phase = repo._run("log", "-r", ".", "-T" "{phase}")
if phase.strip() != "public":
- return datetime.datetime.utcnow()
+ return get_build_date()
repo_url = repo._run("paths", "default")
repo_url = repo_url.strip().replace("ssh://", "https://")
repo_url = repo_url.replace("hg://", "https://")
@@ -105,7 +114,7 @@
dt = get_dt_from_hg(path)
if dt is None:
- dt = datetime.datetime.utcnow()
+ dt = get_build_date()
dt = dt.replace(microsecond=0)
return dt.strftime("%Y%m%d%H%M%S")
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