build with tox 2.x and tox 3.x

tox-dev · Apr 6, 2018 · 72b9c8a · 72b9c8a
1 parent c404be9
commit 72b9c8a
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Showing 3 changed files with 7 additions and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -6,5 +6,9 @@ python:
     - "3.5"
     - "3.6"
     - "3.7-dev"
-install: "pip install ."
+env:
+    - TOX_VERSION="tox-2.x"
+    - TOX_VERSION="tox-3.x"
+install:
+    - pip install --constraint "$TOX_VERSION" .
 script: "tox"
diff --git a/tox-2.x b/tox-2.x
@@ -0,0 +1 @@
+tox>=2.0,<3.0
diff --git a/tox-3.x b/tox-3.x
@@ -0,0 +1 @@
+tox>=3.0,<4.0