From 3a6ffd9a9e8092c07a7c8086065fcbd0606487f8 Mon Sep 17 00:00:00 2001
From: Julien Marrec <julien.marrec@gmail.com>
Date: Fri, 14 Jan 2022 17:46:32 +0100
Subject: [PATCH] Pin bison to make sure m4/1.4.18 is used, not m4/1.4.19

cf https://github.com/conan-io/conan-center-index/issues/8920
cf https://github.com/NREL/conan-openstudio-ruby/pull/38#issuecomment-1013096342
---
 conanfile.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/conanfile.py b/conanfile.py
index 362591c..75cc29b 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -140,7 +140,10 @@ def build_requirements(self):
 
         # You CANNOT use bison 3.7.1 as it's stricter and will throw
         # redefinition errors in Ruby' parser.c
-        self.build_requires("bison/3.7.1")
+        # Latest bison with m4/1.4.18
+        # self.build_requires("bison/3.7.1#dcffa3dd9204cb79ac7ca09a7f19bb8b")
+        # The one on NREL (older)
+        self.build_requires("bison/3.7.1#8bba3cd5416cf47dbc99130108ecb67e")
 
     def build(self):
         """