python27Packages.anytree: fix build

Tests fail on python2.7 b/c the tests use enums (python 3.4+).
Follow-on from #97761.
Converts tests to use pytestCheckHook for easier test disabling.

pkgs/development/python-modules/anytree/default.nix

@@ -1,13 +1,15 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, pythonOlder
 , substituteAll
-, fetchpatch
-, nose
 , six
 , withGraphviz ? true
 , graphviz
 , fontconfig
+# Tests
+, pytestCheckHook
+, nose
 }:
 
 buildPythonPackage rec {
@@ -26,10 +28,6 @@ buildPythonPackage rec {
     })
   ];
 
-  checkInputs = [
-    nose
-  ];
-
   propagatedBuildInputs = [
     six
   ];
@@ -42,13 +40,13 @@ buildPythonPackage rec {
   # circular dependency anytree → graphviz → pango → glib → gtk-doc → anytree
   doCheck = withGraphviz;
 
-  checkPhase = ''
+  checkInputs = [ pytestCheckHook nose ];
-    runHook preCheck
 
-    nosetests
+  pytestFlagsArray = lib.optionals (pythonOlder "3.4") [
-
+    # Use enums, which aren't available pre-python3.4
-    runHook postCheck
+    "--ignore=tests/test_resolver.py"
-  '';
+    "--ignore=tests/test_search.py"
+  ];
 
   meta = with lib; {
     description = "Powerful and Lightweight Python Tree Data Structure";