From: Gard Spreemann <gspreemann@gmail.com>
Date: Mon, 9 Oct 2017 11:46:06 +0200
Subject: [PATCH 1/5] Force Python 3 detection to avoid mixing 2 and 3.

---
 cmake/modules/FindCython.cmake | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/cmake/modules/FindCython.cmake b/cmake/modules/FindCython.cmake
index 04aed1f..f3a5b7b 100644
--- a/cmake/modules/FindCython.cmake
+++ b/cmake/modules/FindCython.cmake
@@ -24,16 +24,16 @@
 
 # Use the Cython executable that lives next to the Python executable
 # if it is a local installation.
-find_package( PythonInterp )
+find_package( PythonInterp 3 )
 if( PYTHONINTERP_FOUND )
   get_filename_component( _python_path ${PYTHON_EXECUTABLE} PATH )
   find_program( CYTHON_EXECUTABLE
-    NAMES cython cython.bat cython3
+    NAMES cython3
     HINTS ${_python_path}
     )
 else()
   find_program( CYTHON_EXECUTABLE
-    NAMES cython cython.bat cython3
+    NAMES cython3
     )
 endif()