From 1ab44d42014cc8ec27f03f645b0d1f9842d6cbda Mon Sep 17 00:00:00 2001
From: Dan Helfman <witten@torsion.org>
Date: Mon, 15 Oct 2018 09:20:35 -0700
Subject: [PATCH] Wrap black with script that skips it if Python version < 3.6.

---
 scripts/black | 13 +++++++++++++
 tox.ini       |  3 ++-
 2 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100755 scripts/black

diff --git a/scripts/black b/scripts/black
new file mode 100755
index 000000000..8c5efb7bd
--- /dev/null
+++ b/scripts/black
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+set -e
+
+python_version=$(python --version)
+
+if [[ "$python_version" =~ "Python 3.5." ]]; then
+    echo "Skipping black due to lack of support for $python_version."
+elif [[ "$python_version" =~ "Python 3.4." ]]; then
+    echo "Skipping black due to lack of support for $python_version."
+else
+    black --skip-string-normalization --line-length 100 --check .
+fi
diff --git a/tox.ini b/tox.ini
index 556833dec..e9f83c2da 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,10 +5,11 @@ skipsdist = True
 [testenv]
 usedevelop = True
 deps = -rtest_requirements.txt
+whitelist_externals = bash
 commands =
     py.test --cov-report term-missing:skip-covered --cov=borgmatic --ignore=tests/end-to-end \
         tests []
-    - black --skip-string-normalization --line-length 100 --check .
+    bash scripts/black
     flake8 .
 
 [testenv:black]