From 6c4f8cb35ba4fe67063f1497c596329928d9d7aa Mon Sep 17 00:00:00 2001
From: Hubert Kario <hkario@redhat.com>
Date: Fri, 29 Nov 2019 15:07:57 +0100
Subject: [PATCH] six: expect specific version

since we use features introduced in 1.9.0, we require it for
installation/use

also add test coverage to ensure we update that version when we need
something newer
---
 .travis.yml | 2 ++
 setup.py    | 2 +-
 tox.ini     | 7 +++++++
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 8d1f6a89..d22b6145 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,6 +15,8 @@ matrix:
         env: TOX_ENV=py26
       - python: 2.7
         env: TOX_ENV=py27
+      - python: 2.7
+        env: TOX_ENV=py27_old_six
       - python: 3.3
         env: TOX_ENV=py33
       - python: 3.4
diff --git a/setup.py b/setup.py
index c0959d44..13c91646 100755
--- a/setup.py
+++ b/setup.py
@@ -40,5 +40,5 @@
           "Programming Language :: Python :: 3.7",
           "Programming Language :: Python :: 3.8",
       ],
-      install_requires=['six'],
+      install_requires=['six>=1.9.0'],
       )
diff --git a/tox.ini b/tox.ini
index fbaf823e..0b3bcdad 100644
--- a/tox.ini
+++ b/tox.ini
@@ -12,12 +12,19 @@ deps =
      py{26}: hypothesis<3
      py{26,27,34,35,36,37,38,py,py3}: pytest
      py{27,34,35,36,37,38,py,py3}: hypothesis
+# six==1.9.0 comes from setup.py install_requires
+     py27_old_six: six==1.9.0
+     py27_old_six: pytest
+     py27_old_six: hypothesis
      py: pytest
      py: hypothesis
      py{33}: wheel<0.30
      coverage
 commands = coverage run --branch -m pytest {posargs:src/ecdsa}
 
+[testenv:py27_old_six]
+basepython = python2.7
+
 [testenv:coverage]
 sitepackages=True
 commands = coverage run --branch -m pytest --hypothesis-show-statistics {posargs:src/ecdsa}