From c550e7b690e97fa44494e8c3cc6d08c81540db2d Mon Sep 17 00:00:00 2001
From: Ben Finney <ben+python@benfinney.id.au>
Date: Nov 10 2017 23:17:42 +0000
Subject: Extract the anomolous addition of ‘docutils’ install requirement.


---

diff --git a/setup.py b/setup.py
index 6f5f32e..c55aa30 100644
--- a/setup.py
+++ b/setup.py
@@ -68,7 +68,6 @@ setup_kwargs = dict(
             ],
         install_requires=[
             "setuptools",
-            "docutils",
             "lockfile >=0.10",
             ],
 
@@ -92,6 +91,11 @@ setup_kwargs = dict(
             ],
         )
 
+# Docutils is only required for building, but Setuptools can't distinguish
+# dependencies properly.
+# See <URL:https://github.com/pypa/setuptools/issues/457>.
+setup_args['install_requires'].append("docutils")
+
 
 if __name__ == '__main__':
     setup(**setup_kwargs)