# HG changeset patch
# User Dan Nicholson <dbn.lists@gmail.com>
# Date 1378736409 -3600
#      Mon Sep 09 15:20:09 2013 +0100
# Node ID 11294aad5ce797d7e0739d3222190d19f0d620e8
# Parent  aff959a3ba134e3ae637ed5f934070b7c574fdae
Issue #4636: Run bdist_wininst install scripts in 2/3 compatibile environment

When bdist_wininst install scripts are run, they use the wininst stubs
to setup the environment. Even if the package is pure, the wininst
environment immediately becomes version specific by importing the
builtins module. Make this compatible by checking the runtime version
and importing __builtin__ when Python2 is being used.

diff -r aff959a3ba13 -r 11294aad5ce7 PC/bdist_wininst/install.c
--- a/PC/bdist_wininst/install.c	Sun Sep 08 18:44:40 2013 -0500
+++ b/PC/bdist_wininst/install.c	Mon Sep 09 15:20:09 2013 +0100
@@ -673,6 +673,7 @@
 static int prepare_script_environment(HINSTANCE hPython)
 {
     PyObject *mod;
+    int maj_version;
     DECLPROC(hPython, PyObject *, PyImport_ImportModule, (char *));
     DECLPROC(hPython, int, PyObject_SetAttrString, (PyObject *, char *, PyObject *));
     DECLPROC(hPython, PyObject *, PyObject_GetAttrString, (PyObject *, char *));
@@ -681,13 +682,19 @@
     DECLPROC(hPython, int, PyArg_ParseTuple, (PyObject *, char *, ...));
     DECLPROC(hPython, PyObject *, PyErr_Format, (PyObject *, char *));
     DECLPROC(hPython, PyObject *, PyLong_FromVoidPtr, (void *));
+    DECLPROC(hPython, const char *, Py_GetVersion, (void));
     if (!PyImport_ImportModule || !PyObject_GetAttrString ||
         !PyObject_SetAttrString || !PyCFunction_New)
         return 1;
-    if (!Py_BuildValue || !PyArg_ParseTuple || !PyErr_Format)
+    if (!Py_BuildValue || !PyArg_ParseTuple || !PyErr_Format ||
+        !Py_GetVersion)
         return 1;
 
-    mod = PyImport_ImportModule("builtins");
+    maj_version = atoi(Py_GetVersion());
+    if (maj_version >= 3)
+        mod = PyImport_ImportModule("builtins");
+    else
+        mod = PyImport_ImportModule("__builtin__");
     if (mod) {
         int i;
         g_PyExc_ValueError = PyObject_GetAttrString(mod, "ValueError");