diff -rupN --no-dereference Python-3.11.8/Lib/site.py Python-3.11.8-new/Lib/site.py
--- Python-3.11.8/Lib/site.py	2024-02-06 22:21:21.000000000 +0100
+++ Python-3.11.8-new/Lib/site.py	2024-02-16 22:21:29.981347433 +0100
@@ -371,7 +371,7 @@ def getsitepackages(prefixes=None):
             continue
         seen.add(prefix)
 
-        if os.sep == '/':
+        if True: #os.sep == '/':
             libdirs = [sys.platlibdir]
             if sys.platlibdir != "lib":
                 libdirs.append("lib")
diff -rupN --no-dereference Python-3.11.8/Lib/sysconfig.py Python-3.11.8-new/Lib/sysconfig.py
--- Python-3.11.8/Lib/sysconfig.py	2024-02-16 22:21:29.650347113 +0100
+++ Python-3.11.8-new/Lib/sysconfig.py	2024-02-16 22:21:29.985347437 +0100
@@ -48,13 +48,13 @@ _INSTALL_SCHEMES = {
         'data': '{base}',
         },
     'nt': {
-        'stdlib': '{installed_base}/Lib',
-        'platstdlib': '{base}/Lib',
-        'purelib': '{base}/Lib/site-packages',
-        'platlib': '{base}/Lib/site-packages',
-        'include': '{installed_base}/Include',
-        'platinclude': '{installed_base}/Include',
-        'scripts': '{base}/Scripts',
+        'stdlib': '{installed_base}/lib/python{py_version_short}',
+        'platstdlib': '{base}/lib/python{py_version_short}',
+        'purelib': '{base}/lib/python{py_version_short}/site-packages',
+        'platlib': '{base}/lib/python{py_version_short}/site-packages',
+        'include': '{installed_base}/include/python{py_version_short}',
+        'platinclude': '{installed_base}/include/python{py_version_short}',
+        'scripts': '{base}/bin',
         'data': '{base}',
         },
     # Downstream distributors can overwrite the default install scheme.
@@ -135,12 +135,12 @@ if _HAS_USER_BASE:
     _INSTALL_SCHEMES |= {
         # NOTE: When modifying "purelib" scheme, update site._get_path() too.
         'nt_user': {
-            'stdlib': '{userbase}/Python{py_version_nodot_plat}',
-            'platstdlib': '{userbase}/Python{py_version_nodot_plat}',
-            'purelib': '{userbase}/Python{py_version_nodot_plat}/site-packages',
-            'platlib': '{userbase}/Python{py_version_nodot_plat}/site-packages',
-            'include': '{userbase}/Python{py_version_nodot_plat}/Include',
-            'scripts': '{userbase}/Python{py_version_nodot_plat}/Scripts',
+            'stdlib': '{userbase}/lib/python{py_version_short}',
+            'platstdlib': '{userbase}/lib/python{py_version_short}',
+            'purelib': '{userbase}/lib/python{py_version_short}/site-packages',
+            'platlib': '{userbase}/lib/python{py_version_short}/site-packages',
+            'include': '{userbase}/include/python{py_version_short}',
+            'scripts': '{userbase}/bin',
             'data': '{userbase}',
             },
         'posix_user': {
@@ -560,7 +560,7 @@ def _init_non_posix(vars):
     vars['INCLUDEPY'] = get_path('include')
     vars['EXT_SUFFIX'] = _imp.extension_suffixes()[0]
     vars['EXE'] = '.exe'
-    vars['VERSION'] = _PY_VERSION_SHORT_NO_DOT
+    vars['VERSION'] = _PY_VERSION_SHORT
     vars['BINDIR'] = os.path.dirname(_safe_realpath(sys.executable))
     vars['TZPATH'] = ''
 
diff -rupN --no-dereference Python-3.11.8/Modules/getpath.c Python-3.11.8-new/Modules/getpath.c
--- Python-3.11.8/Modules/getpath.c	2024-02-06 22:21:21.000000000 +0100
+++ Python-3.11.8-new/Modules/getpath.c	2024-02-16 22:21:29.988347440 +0100
@@ -879,7 +879,11 @@ _PyConfig_InitPathConfig(PyConfig *confi
 
     if (
 #ifdef MS_WINDOWS
+# ifdef __MINGW32__
+        !decode_to_dict(dict, "os_name", "mingw") ||
+# else
         !decode_to_dict(dict, "os_name", "nt") ||
+# endif
 #elif defined(__APPLE__)
         !decode_to_dict(dict, "os_name", "darwin") ||
 #else
diff -rupN --no-dereference Python-3.11.8/Modules/getpath.py Python-3.11.8-new/Modules/getpath.py
--- Python-3.11.8/Modules/getpath.py	2024-02-06 22:21:21.000000000 +0100
+++ Python-3.11.8-new/Modules/getpath.py	2024-02-16 22:21:29.992347444 +0100
@@ -186,6 +186,19 @@ if os_name == 'posix' or os_name == 'dar
     DELIM = ':'
     SEP = '/'
 
+elif os_name == 'mingw':
+    BUILDDIR_TXT = 'pybuilddir.txt'
+    BUILD_LANDMARK = f'Modules\\Setup.local'
+    DEFAULT_PROGRAM_NAME = f'python{VERSION_MAJOR}'
+    STDLIB_SUBDIR = f'{platlibdir}\\python{VERSION_MAJOR}.{VERSION_MINOR}'
+    STDLIB_LANDMARKS = [f'{STDLIB_SUBDIR}\\os.py', f'{STDLIB_SUBDIR}\\os.pyc']
+    PLATSTDLIB_LANDMARK = f'{platlibdir}\\python{VERSION_MAJOR}.{VERSION_MINOR}\\lib-dynload'
+    BUILDSTDLIB_LANDMARKS = ['Lib\\os.py']
+    VENV_LANDMARK = 'pyvenv.cfg'
+    ZIP_LANDMARK = f'{platlibdir}\\python{VERSION_MAJOR}{VERSION_MINOR}.zip'
+    DELIM = ';'
+    SEP = '\\'
+
 elif os_name == 'nt':
     BUILDDIR_TXT = 'pybuilddir.txt'
     BUILD_LANDMARK = f'{VPATH}\\Modules\\Setup.local'
@@ -456,7 +469,7 @@ if not py_setpath and not home_was_set:
     # ._pth file, but it cannot override the library's one.
     for p in [library, executable, real_executable]:
         if p:
-            if os_name == 'nt' and (hassuffix(p, 'exe') or hassuffix(p, 'dll')):
+            if (os_name == 'nt' or os_name == 'mingw') and (hassuffix(p, 'exe') or hassuffix(p, 'dll')):
                 p = p.rpartition('.')[0]
             p += '._pth'
             try: