@@ -31,6 +31,10 @@ if(ITKPythonPackage_SUPERBUILD)
     list(APPEND ep_common_cmake_cache_args
       -DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=${CMAKE_OSX_DEPLOYMENT_TARGET})
   endif()
+  if(CMAKE_OSX_ARCHITECTURES)
+    list(APPEND ep_common_cmake_cache_args
+      -DCMAKE_OSX_ARCHITECTURES:STRING=${CMAKE_OSX_ARCHITECTURES})
+  endif()
 
   #-----------------------------------------------------------------------------
   # compile with multiple processors
 
@@ -78,10 +78,11 @@ for VENV in "${VENVS[@]}"; do
     echo "PYTHON_LIBRARY:${PYTHON_LIBRARY}"
 
     $PYTHON_EXECUTABLE -m pip install -r ${SCRIPT_DIR}/../requirements-dev.txt
-    $PYTHON_EXECUTABLE setup.py bdist_wheel -G Ninja -- \
+    $PYTHON_EXECUTABLE setup.py bdist_wheel --build-type MinSizeRel --plat-name macosx-10.6-x86_64 -G Ninja -- \
       -DCMAKE_MAKE_PROGRAM:FILEPATH=${NINJA_EXECUTABLE} \
       -DITK_SOURCE_DIR:PATH=${SCRIPT_DIR}/../standalone-build/ITK-source \
       -DCMAKE_OSX_DEPLOYMENT_TARGET:STRING=10.6 \
+      -DCMAKE_OSX_ARCHITECTURES:STRING=x86_64 \
       -DPYTHON_EXECUTABLE:FILEPATH=${PYTHON_EXECUTABLE} \
       -DPYTHON_INCLUDE_DIR:PATH=${PYTHON_INCLUDE_DIR} \
       -DPYTHON_LIBRARY:FILEPATH=${PYTHON_LIBRARY}
@@ -93,7 +94,7 @@ $DELOCATE_WHEEL ${SCRIPT_DIR}/../dist/*.whl # copies library dependencies into w
 
 # Install packages and test
 for VENV in "${VENVS[@]}"; do
-    ${VENV}/bin/pip install itk --user --no-cache-dir --no-index -f ${SCRIPT_DIR}/..//dist
+    ${VENV}/bin/pip install itk --no-cache-dir --no-index -f ${SCRIPT_DIR}/../dist
     (cd $HOME; ${VENV}/bin/python -c 'import itk;')
     (cd $HOME; ${VENV}/bin/python -c 'import itk; image = itk.Image[itk.UC, 2].New()')
 done
@@ -153,7 +153,8 @@ function install_macpython {
     fi
     sudo installer -pkg $inst_path -target /
     local py_mm=${py_version:0:3}
-    PYTHON_EXE=$MACPYTHON_PY_PREFIX/$py_mm/bin/python$py_mm
+    local py_m=${py_version:0:1}
+    PYTHON_EXE=$MACPYTHON_PY_PREFIX/$py_mm/bin/python$py_m
 }
 
 function install_pip {
@@ -178,7 +179,7 @@ function install_virtualenv {
     check_pip
     # Travis VMS install virtualenv for system python by default - force
     # install even if installed already
-    $PIP_CMD install virtualenv --ignore-installed
+    $PYTHON_EXE -m pip install virtualenv --ignore-installed
     check_python
     VIRTUALENV_CMD="$(dirname $PYTHON_EXE)/virtualenv"
 }
@@ -187,7 +188,12 @@ function install_virtualenv {
 # Remove previous versions
 sudo rm -rf ${MACPYTHON_FRAMEWORK}
 
-for pyversion in 2.7.13 3.4.6 3.5.3 3.6.0; do
+LATEST_27=2.7.13
+LATEST_34=3.4.4
+LATEST_35=3.5.3
+LATEST_36=3.6.0
+
+for pyversion in $LATEST_27 $LATEST_34 $LATEST_35 $LATEST_36; do
   install_macpython $pyversion
   install_pip
   install_virtualenv