From 28303100580486ab8fa6544def6aafb7086806f1 Mon Sep 17 00:00:00 2001
From: Nikita Popov <npopov@redhat.com>
Date: Tue, 11 Jan 2022 03:46:12 -0500
Subject: [PATCH] Backport patch 46c947af7 for build reproducibility

---
 46c947af7.patch | 29 +++++++++++++++++++++++++++++
 python-lit.spec |  6 +++++-
 2 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 46c947af7.patch

diff --git a/46c947af7.patch b/46c947af7.patch
new file mode 100644
index 0000000..dac203f
--- /dev/null
+++ b/46c947af7.patch
@@ -0,0 +1,29 @@
+From 46c947af7ead0a939fbd7a93c370e7ead2128d07 Mon Sep 17 00:00:00 2001
+From: serge-sans-paille <sguelton@redhat.com>
+Date: Wed, 18 Aug 2021 23:48:14 +0200
+Subject: [PATCH] Have lit preserve SOURCE_DATE_EPOCH
+
+This environment variable has been standardized for reproducible builds. Setting
+it can help to have reproducible tests too, so keep it as part of the testing
+env when set.
+
+See https://reproducible-builds.org/docs/source-date-epoch/
+
+Differential Revision: https://reviews.llvm.org/D108332
+---
+ llvm/utils/lit/lit/TestingConfig.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/llvm/utils/lit/lit/TestingConfig.py b/llvm/utils/lit/lit/TestingConfig.py
+index d534d895e4bae..37558bd5059c0 100644
+--- a/llvm/utils/lit/lit/TestingConfig.py
++++ b/llvm/utils/lit/lit/TestingConfig.py
+@@ -28,7 +28,7 @@ def fromdefaults(litConfig):
+                      'TMPDIR', 'TMP', 'TEMP', 'TEMPDIR', 'AVRLIT_BOARD',
+                      'AVRLIT_PORT', 'FILECHECK_OPTS', 'VCINSTALLDIR',
+                      'VCToolsinstallDir', 'VSINSTALLDIR', 'WindowsSdkDir',
+-                     'WindowsSDKLibVersion']
++                     'WindowsSDKLibVersion', 'SOURCE_DATE_EPOCH']
+ 
+         if sys.platform == 'win32':
+             pass_vars.append('INCLUDE')
diff --git a/python-lit.spec b/python-lit.spec
index 72d7dfa..0435ecf 100644
--- a/python-lit.spec
+++ b/python-lit.spec
@@ -9,13 +9,14 @@
 
 Name: python-%{srcname}
 Version: %{lit_version}%{?rc_ver:~rc%{rc_ver}}
-Release: 2%{?dist}
+Release: 3%{?dist}
 BuildArch: noarch
 
 License: NCSA
 Summary: Tool for executing llvm test suites
 URL: https://pypi.python.org/pypi/lit
 Source0: %{pypi_source %{srcname} %{lit_version}%{?rc_ver:rc%{rc_ver}}%{?post_ver:.post%{post_ver}}}
+Patch0: 46c947af7.patch
 
 # for file check
 %if %{with check}
@@ -60,6 +61,9 @@ sed -i -e '1{\@^#!/usr/bin/env python@d}' %{buildroot}%{python3_sitelib}/%{srcna
 %{_bindir}/lit
 
 %changelog
+* Tue Jan 11 2022 Nikita Popov <npopov@redhat.com> - 13.0.0-3
+- Backport patch 46c947af7 for build reproducibility
+
 * Thu Oct 21 2021 Konrad Kleine <kkleine@redhat.com> - 13.0.0-2
 - Remove python 2 support