Use 3.4 for these envs.

Author: ionelmc

ci/templates/tox.ini

@@ -70,6 +70,7 @@ commands =
     flake8 src tests
 
 [testenv:coveralls]
+basepython = python3.4
 deps =
     coveralls
 skip_install = true
@@ -80,6 +81,7 @@ commands =
     coveralls --merge=extension-coveralls.json []
 
 [testenv:codecov]
+basepython = python3.4
 deps =
     codecov
 skip_install = true
@@ -92,6 +94,7 @@ commands =
 
 
 [testenv:extension-coveralls]
+basepython = python3.4
 deps =
     cpp-coveralls
 skip_install = true
@@ -109,6 +112,7 @@ commands =
     coverage report
 
 [testenv:clean]
+basepython = python3.4
 commands = coverage erase
 skip_install = true
 usedevelop = false

tox.ini

@@ -79,6 +79,7 @@ commands =
     flake8 src tests
 
 [testenv:coveralls]
+basepython = python3.4
 deps =
     coveralls
 skip_install = true
@@ -89,6 +90,7 @@ commands =
     coveralls --merge=extension-coveralls.json []
 
 [testenv:codecov]
+basepython = python3.4
 deps =
     codecov
 skip_install = true
@@ -101,6 +103,7 @@ commands =
 
 
 [testenv:extension-coveralls]
+basepython = python3.4
 deps =
     cpp-coveralls
 skip_install = true
@@ -118,6 +121,7 @@ commands =
     coverage report
 
 [testenv:clean]
+basepython = python3.4
 commands = coverage erase
 skip_install = true
 usedevelop = false