Add an _nt core module for Windows-specific startup code. Fixes #493

(cherry picked from commit 2177ebd)

fix conflicts for Add an _nt core module for Windows-specific startup code

Author: timfel

graalpython/com.oracle.graal.python.frozen/freeze_modules.py

@@ -119,6 +119,7 @@ def add_graalpython_core():
         "java",
         "pip_hook",
         "unicodedata",
+        "_nt",
     ]:
         modname = f"graalpy.{os.path.basename(name)}"
         modpath = os.path.join(lib_graalpython, f"{name}.py")

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/Python3Core.java

@@ -423,6 +423,11 @@ private static TruffleString[] initializeCoreFiles() {
                         toTruffleStringUncached("_sysconfig"),
                         toTruffleStringUncached("java"),
                         toTruffleStringUncached("pip_hook")));
+        if (PythonOS.getPythonOS() == PythonOS.PLATFORM_WIN32) {
+            coreFiles = new ArrayList<>(coreFiles);
+            coreFiles.add(toTruffleStringUncached("_nt"));
+        }
+
         // add service loader defined python file extensions
         if (!ImageInfo.inImageRuntimeCode()) {
             ServiceLoader<PythonBuiltins> providers = ServiceLoader.load(PythonBuiltins.class, Python3Core.class.getClassLoader());

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/module/FrozenModules.java

@@ -227,6 +227,7 @@ private static final class Map {
         private static final PythonFrozenModule GRAALPY_JAVA = new PythonFrozenModule("GRAALPY_JAVA", null, false);
         private static final PythonFrozenModule GRAALPY_PIP_HOOK = new PythonFrozenModule("GRAALPY_PIP_HOOK", null, false);
         private static final PythonFrozenModule GRAALPY_UNICODEDATA = new PythonFrozenModule("GRAALPY_UNICODEDATA", null, false);
+        private static final PythonFrozenModule GRAALPY__NT = new PythonFrozenModule("GRAALPY__NT", null, false);
     }
 
     public static final PythonFrozenModule lookup(String name) {
@@ -613,6 +614,8 @@ public static final PythonFrozenModule lookup(String name) {
                 return Map.GRAALPY_PIP_HOOK;
             case "graalpy.unicodedata":
                 return Map.GRAALPY_UNICODEDATA;
+            case "graalpy._nt":
+                return Map.GRAALPY__NT;
             default:
                 return null;
         }