From 712adc2eb04fe69f69984d4dbed7c4b58d6da44e Mon Sep 17 00:00:00 2001
From: Nikita Popov <npopov@redhat.com>
Date: Fri, 19 Jul 2024 13:17:57 +0000
Subject: [PATCH] Patch back in Python 3.6 support on RHEL 8

---
 0001-Add-back-support-for-Python-3.6.patch | 50 ++++++++++++++++++++++
 patches.spec.inc                           |  5 ++-
 prep.spec.inc                              |  3 ++
 3 files changed, 57 insertions(+), 1 deletion(-)
 create mode 100644 0001-Add-back-support-for-Python-3.6.patch

diff --git a/0001-Add-back-support-for-Python-3.6.patch b/0001-Add-back-support-for-Python-3.6.patch
new file mode 100644
index 0000000..154e587
--- /dev/null
+++ b/0001-Add-back-support-for-Python-3.6.patch
@@ -0,0 +1,50 @@
+From fea6f0e31253ad0f335eea2e4718bacd5930d6d4 Mon Sep 17 00:00:00 2001
+From: Nikita Popov <npopov@redhat.com>
+Date: Fri, 19 Jul 2024 14:52:49 +0200
+Subject: [PATCH] Add back support for Python 3.6
+
+---
+ llvm/CMakeLists.txt            | 2 +-
+ llvm/utils/update_test_body.py | 6 ++++--
+ 2 files changed, 5 insertions(+), 3 deletions(-)
+
+diff --git a/llvm/CMakeLists.txt b/llvm/CMakeLists.txt
+index 12618966c4ad..9c4df0082a9a 100644
+--- a/llvm/CMakeLists.txt
++++ b/llvm/CMakeLists.txt
+@@ -932,7 +932,7 @@ set(LLVM_PROFDATA_FILE "" CACHE FILEPATH
+ 
+ if(LLVM_INCLUDE_TESTS)
+   # All LLVM Python files should be compatible down to this minimum version.
+-  set(LLVM_MINIMUM_PYTHON_VERSION 3.8)
++  set(LLVM_MINIMUM_PYTHON_VERSION 3.6)
+ else()
+   # FIXME: it is unknown if this is the actual minimum bound
+   set(LLVM_MINIMUM_PYTHON_VERSION 3.0)
+diff --git a/llvm/utils/update_test_body.py b/llvm/utils/update_test_body.py
+index 661b0270d783..152d0c5f8476 100755
+--- a/llvm/utils/update_test_body.py
++++ b/llvm/utils/update_test_body.py
+@@ -57,7 +57,8 @@ def process(args, path):
+                 input="\n".join(
+                     prolog[:-1] if prolog[-1].startswith(".endif") else prolog
+                 ).encode(),
+-                capture_output=True,
++                stdout=subprocess.PIPE,
++                stderr=subprocess.PIPE,
+                 check=True,
+             )
+         except subprocess.CalledProcessError as ex:
+@@ -71,7 +72,8 @@ def process(args, path):
+ 
+             sub = subprocess.run(
+                 ["sh", "-eu", "gen"],
+-                capture_output=True,
++                stdout=subprocess.PIPE,
++                stderr=subprocess.PIPE,
+                 # Don't encode the directory information to the Clang output.
+                 # Remove unneeded details (.ident) as well.
+                 env=dict(
+-- 
+2.45.2
+
diff --git a/patches.spec.inc b/patches.spec.inc
index 06a0480..c4f1a75 100644
--- a/patches.spec.inc
+++ b/patches.spec.inc
@@ -16,5 +16,8 @@ Patch3002:     0001-Always-build-shared-libs-for-LLD.patch
 # Source2006:	0001-Produce-DWARF4-by-default.patch
 
 #region RHEL patches
-Patch9002:     0001-Remove-myst_parser-dependency-for-RHEL.patch
+# All RHEL
+Patch9001:     0001-Remove-myst_parser-dependency-for-RHEL.patch
+# RHEL 8 only
+Patch9002:     0001-Add-back-support-for-Python-3.6.patch
 #endregion
diff --git a/prep.spec.inc b/prep.spec.inc
index 9a4cd2f..9fbbc4d 100644
--- a/prep.spec.inc
+++ b/prep.spec.inc
@@ -15,8 +15,11 @@
 %autopatch -M9000 -p1
 
 %if %{defined rhel}
+%patch -p1 -P9001
+%if %rhel == 8
 %patch -p1 -P9002
 %endif
+%endif
 
 #region LLVM preparation