#97 tox-conda #94 use miniconda instead of anaconda

tox.ini

@@ -23,7 +23,7 @@ commands =
 [testenv:docs]
 ; TODO docs requires make and graphviz installed, therefore exclude Windows
 platform =
-    linux2
+    linux
     darwin
 ; use python3.6 because of incompatibility under Windows of the pycairo installed through conda for py37
 basepython = python3.6
@@ -50,7 +50,7 @@ commands =
 [testenv:coverage]
 ; TODO coverage requires make, therefore exclude Windows
 platform =
-    linux2
+    linux
     darwin
 ; use python3.6 because of incompatibility under Windows of the pycairo installed through conda for py37
 basepython = python3.6
@@ -229,7 +229,7 @@ commands =
 [testenv:py37]
 ; exclude py37 because of incompatibility under Windows of the pycairo installed through conda for py37
 platform =
-    linux2
+    linux
     darwin
 setenv =
     PYTHONPATH = {toxinidir}