From 72047cbe687ac8f55c6f9afa5056b196e84ff355 Mon Sep 17 00:00:00 2001
From: Ben Sturmfels <ben@sturm.com.au>
Date: Fri, 10 Apr 2020 07:14:39 +1000
Subject: [PATCH] Require jinja2<3.0.0 due to use of f-strings.

---
 setup.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index 7788b5a1..157b9113 100644
--- a/setup.py
+++ b/setup.py
@@ -57,7 +57,9 @@ install_requires = [
     'pytest-xdist',
     'werkzeug>=0.7,<1.0.0',
     'celery>=3.0',
-    'jinja2',
+    # Jinja2 3.0.0 uses f-strings (Python 3.7 and above) but `pip install` on
+    # Debian 9 doesn't seem to respect Jinja2's 'python_requires=">=3.6"' line.
+    'jinja2<3.0.0',
     'Babel>=1.3',
     'WebTest>=2.0.18',
     'ConfigObj',
-- 
2.25.1