From 237fb6f142b0ed7ea6434dfe32e82ab48df59515 Mon Sep 17 00:00:00 2001
From: Tom Most <twm@freecog.net>
Date: Tue, 22 Dec 2020 15:11:52 -0800
Subject: [PATCH] Set minimum Twisted to 18.7.0

This seems sufficiently ancient as a lower bound.
---
 setup.py | 3 +--
 tox.ini  | 7 ++-----
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/setup.py b/setup.py
index 473ed2fb..6d5e24de 100644
--- a/setup.py
+++ b/setup.py
@@ -33,8 +33,7 @@
             "requests >= 2.1.0",
             "hyperlink >= 19.0.0",
             "six >= 1.13.0",
-            "Twisted[tls] >= 16.4.0 ; python_version < '3.7'",
-            "Twisted[tls] >= 18.7.0 ; python_version >= '3.7'",
+            "Twisted[tls] >= 18.7.0",
             "attrs",
         ],
         extras_require={
diff --git a/tox.ini b/tox.ini
index 942321d2..663a262c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,7 +2,7 @@
 envlist =
     {pypy,py27,py35,py36,py37}-twisted_lowest,
     {pypy,pypy3,py27,py35,py36,py37,py38}-twisted_latest,
-    {pypy3,py35,py36,py37,py38}-twisted_trunk-pyopenssl_trunk,
+    {pypy3,py35,py36,py37,py38}-twisted_trunk,
     towncrier, twine, check-manifest, flake8, docs
 
 [testenv]
@@ -11,13 +11,10 @@ deps =
     coverage
     mock
 
-    !py37-twisted_lowest: Twisted==16.4.0
-    py37-twisted_lowest: Twisted==18.7.0
+    twisted_lowest: Twisted==18.7.0
     twisted_latest: Twisted
     twisted_trunk: https://github.com/twisted/twisted/archive/trunk.zip
 
-    pyopenssl_trunk: https://github.com/pyca/pyopenssl/archive/master.zip
-
     docs: Sphinx>=1.4.8
 setenv =
     # Avoid unnecessary network access when creating virtualenvs for speed.