diff -urN Cura-4.2.1-orig/CMakeLists.txt Cura-4.2.1/CMakeLists.txt
--- Cura-4.2.1-orig/CMakeLists.txt	2019-07-31 15:34:07.000000000 +0300
+++ Cura-4.2.1/CMakeLists.txt	2019-08-04 18:39:24.106917187 +0300
@@ -47,6 +47,15 @@
     find_package(Python3 REQUIRED COMPONENTS Interpreter Development)
 endif()
 
+if(NOT PYTHON_SITE_PACKAGES_DIR)
+   if(APPLE OR WIN32)
+       set(PYTHON_SITE_PACKAGES_DIR lib/python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}/site-packages
+           CACHE STRING "Directory to install Python bindings to")
+   else()
+       set(PYTHON_SITE_PACKAGES_DIR lib/python${PYTHON_VERSION_MAJOR}/dist-packages
+           CACHE STRING "Directory to install Python bindings to")
+   endif()
+endif()
 
 if(NOT ${URANIUM_DIR} STREQUAL "")
     set(CMAKE_MODULE_PATH "${URANIUM_DIR}/cmake")
@@ -64,7 +73,7 @@
 install(DIRECTORY resources
         DESTINATION ${CMAKE_INSTALL_DATADIR}/cura)
 install(DIRECTORY plugins
-        DESTINATION lib${LIB_SUFFIX}/cura)
+        DESTINATION ${CMAKE_INSTALL_LIBDIR}/cura)
 
 if(NOT APPLE AND NOT WIN32)
     install(FILES cura_app.py
@@ -79,10 +88,10 @@
             DESTINATION lib${LIB_SUFFIX}/python${Python3_VERSION_MAJOR}/dist-packages/cura)
     else()
         install(DIRECTORY cura
-            DESTINATION lib${LIB_SUFFIX}/python${Python3_VERSION_MAJOR}.${Python3_VERSION_MINOR}/site-packages
+            DESTINATION ${PYTHON_SITE_PACKAGES_DIR}
             FILES_MATCHING PATTERN *.py)
         install(FILES ${CMAKE_BINARY_DIR}/CuraVersion.py
-            DESTINATION lib${LIB_SUFFIX}/python${Python3_VERSION_MAJOR}.${Python3_VERSION_MINOR}/site-packages/cura)
+            DESTINATION ${PYTHON_SITE_PACKAGES_DIR}/cura)
     endif()
     install(FILES ${CMAKE_BINARY_DIR}/cura.desktop
             DESTINATION ${CMAKE_INSTALL_DATADIR}/applications)