From 816f58cb2d6ebe06d2dda5c66797d0adc18feb31 Mon Sep 17 00:00:00 2001
From: David Tucker <david@tucker.name>
Date: Sun, 17 Nov 2019 19:50:47 -0600
Subject: [PATCH 1/2] Remove basepython declarations.

These are the default for tox anyway, and for some reason having them in
place combined with `isolated_build = True` causes an error, so best to
remove it.
---
 tox.ini | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/tox.ini b/tox.ini
index 68165ea2..8d4f6c4d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -16,12 +16,6 @@
 envlist = py{27,35,36,37,38}
 
 [testenv]
-basepython =
-    py27: python2.7
-    py35: python3.5
-    py36: python3.6
-    py37: python3.7
-    py38: python3.8
 deps =
     check-manifest
     # If your project uses README.rst, uncomment the following:

From 973fc0147afae9e06d63be2b66a87239f7caafc9 Mon Sep 17 00:00:00 2001
From: Paul Ganssle <paul@ganssle.io>
Date: Sun, 17 Nov 2019 19:52:01 -0600
Subject: [PATCH 2/2] Opt in to PEP 517/518

Adds a `pyproject.toml` file and enables build isolation in tox.
---
 MANIFEST.in    | 2 ++
 pyproject.toml | 3 +++
 tox.ini        | 1 +
 3 files changed, 6 insertions(+)
 create mode 100644 pyproject.toml

diff --git a/MANIFEST.in b/MANIFEST.in
index c066bbd4..ca3d4484 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,5 @@
+include pyproject.toml
+
 # Include the README
 include *.md
 
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..930fc574
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["setuptools >= 41.4", "wheel >= 0.33.6"]
+build-backend = "setuptools.build_meta"
diff --git a/tox.ini b/tox.ini
index 8d4f6c4d..3d5f5872 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,6 +14,7 @@
 
 [tox]
 envlist = py{27,35,36,37,38}
+isolated_build = True
 
 [testenv]
 deps =