py3: Avoid compiling renpy.compat.dictviews.

This module won't work on 3.11, but won't be imported there
anyway, so there is no reason to import it.

module/setup.py

@@ -56,7 +56,7 @@ def setup_env(name):
 setup_env("CXX")
 
 import setuplib
-from setuplib import android, ios, emscripten, raspi, include, library, cython, cmodule, copyfile, find_unnecessary_gen, generate_all_cython
+from setuplib import android, ios, emscripten, raspi, include, library, cython, cmodule, copyfile, find_unnecessary_gen, generate_all_cython, PY2
 
 # These control the level of optimization versus debugging.
 setuplib.extra_compile_args = [ "-Wno-unused-function" ]
@@ -173,7 +173,8 @@ def setup_env(name):
 cython("renpy.style")
 
 # renpy.compat
-cython("renpy.compat.dictviews")
+if PY2:
+    cython("renpy.compat.dictviews")
 
 # renpy.styledata
 cython("renpy.styledata.styleclass")

module/setuplib.py

@@ -53,6 +53,9 @@
 
 if sys.version_info.major > 2:
     gen += "3"
+    PY2 = False
+else:
+    PY2 = True
 
 if coverage:
     gen += "-coverage"