--- VTK-7.0.0/ThirdParty/SixPython/CMakeLists.txt_orig	2016-01-28 17:17:38.000000000 +0100
+++ VTK-7.0.0/ThirdParty/SixPython/CMakeLists.txt	2017-01-30 16:25:47.691306354 +0100
@@ -1,2 +1,2 @@
 include(vtkModuleMacrosPython)
-vtk_module_python_module(${vtk-module} six.py CAN_USE_SYSTEM)
+vtk_module_python_module(${vtk-module} six.py NO_INSTALL CAN_USE_SYSTEM)