From 46250293705b946b762242b0beea38f313412c58 Mon Sep 17 00:00:00 2001
From: Adriane Boyd <adrianeboyd@gmail.com>
Date: Tue, 22 Sep 2020 19:04:49 +0200
Subject: [PATCH] Add pin for pyrsistent<0.17.0 (#6116)

Add pin for pyrsistent<0.17.0 since pyrsistent>=0.17.1 is only
compatible with python3.5+.
---
 requirements.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/requirements.txt b/requirements.txt
index b93def651..367eef111 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,6 +14,7 @@ plac>=0.9.6,<1.2.0
 pathlib==1.0.1; python_version < "3.4"
 tqdm>=4.38.0,<5.0.0
 # Optional dependencies
+pyrsistent<0.17.0
 jsonschema>=2.6.0,<3.1.0
 # Development dependencies
 cython>=0.25