From 00714e5102523829eb20129567152667df154d5b Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <richard@matrix.org>
Date: Thu, 25 Apr 2019 14:52:19 +0100
Subject: [PATCH] set PIP_USE_PEP517 = False for tests

pip 19.1 otherwise complains about "editable mode is not supported for
pyproject.toml-style projects"
---
 tox.ini | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tox.ini b/tox.ini
index ef543890f9..d0e519ce46 100644
--- a/tox.ini
+++ b/tox.ini
@@ -24,6 +24,11 @@ deps =
     pip>=10
 
 setenv =
+    # we have a pyproject.toml, but don't want pip to use it for building.
+    # (otherwise we get an error about 'editable mode is not supported for
+    # pyproject.toml-style projects').
+    PIP_USE_PEP517 = false
+
     PYTHONDONTWRITEBYTECODE = no_byte_code
     COVERAGE_PROCESS_START = {toxinidir}/.coveragerc