Tools: Constrain the cffi package for older pythons

2021-10-21 11:43:19 +02:00 · 2021-10-21 11:43:19 +02:00 · 77799ec529
commit 77799ec529
--- a/requirements.txt
+++ b/requirements.txt
@ -8,4 +8,6 @@ setuptools
 pyserial>=3.0
 future>=0.15.2
 cryptography>=2.1.4,<35
+# cffi 1.15 supports Python 3.6+ only
+cffi<1.15;python_version<'3.6'
 pyparsing>=2.0.3,<2.4.0