From b03278abbd74567d0699a6f2ecdc2d72baa34587 Mon Sep 17 00:00:00 2001
From: Massimiliano Culpo <massimiliano.culpo@gmail.com>
Date: Sat, 12 Sep 2020 20:36:47 +0200
Subject: [PATCH] Add a constraint on pyrsistent for Python 2.7 (#31)

This is needed to avoid Python 2.7 tests
failure. See:

https://github.com/tobgu/pyrsistent/issues/205
https://github.com/tobgu/pyrsistent/issues/207
https://github.com/tobgu/pyrsistent/issues/208
---
 pyproject.toml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pyproject.toml b/pyproject.toml
index 355a9fc..cb1d6ce 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,6 +54,9 @@ sphinx_rtd_theme = [
   {version = "^0.4.3", python = "^3.5"}
 ]
 jsonschema = "^3.2.0"
+pyrsistent = [
+  {version="<0.17.0", python="^2.7"}
+]
 
 [tool.poetry.scripts]
 archspec = 'archspec.cli:main'