Fix windows cert store import in pythonfiles.

Add libb2 to dependencies of Python.
Simplify mingw conditions.

Author: Alexpux

.github/workflows/mingw.yml

@@ -46,6 +46,7 @@ jobs:
             ${{ matrix.prefix }}-toolchain
             ${{ matrix.prefix }}-expat
             ${{ matrix.prefix }}-bzip2
+            ${{ matrix.prefix }}-libb2
             ${{ matrix.prefix }}-libffi
             ${{ matrix.prefix }}-mpdecimal
             ${{ matrix.prefix }}-ncurses

Lib/compileall.py

@@ -38,7 +38,7 @@ def _walk_dir(dir, maxlevels, quiet=0):
         if name == '__pycache__':
             continue
         fullname = os.path.join(dir, name)
-        if sys.version.find("MINGW") >= 0:
+        if 'mingw' in sys.version.lower():
             fullname = fullname.replace('\\','/')
         if not os.path.isdir(fullname):
             yield fullname

Lib/ctypes/__init__.py

@@ -475,10 +475,11 @@ def LoadLibrary(self, name):
 cdll = LibraryLoader(CDLL)
 pydll = LibraryLoader(PyDLL)
 
-if _os.name == "nt" and _sys.version.find('MINGW') >= 0:
-    pythonapi = PyDLL("libpython%d.%d%s.dll" % (_sys.version_info[:2] + (_sys.abiflags,)), None)
-elif _os.name == "nt":
-    pythonapi = PyDLL("python.dll", None, _sys.dllhandle)
+if _os.name == "nt":
+    if 'mingw' in sys.version.lower():
+        pythonapi = PyDLL("libpython%d.%d%s.dll" % (_sys.version_info[:2] + (_sys.abiflags,)), None)
+    else:
+        pythonapi = PyDLL("python.dll", None, _sys.dllhandle)
 elif _sys.platform == "android":
     pythonapi = PyDLL("libpython%d.%d.so" % _sys.version_info[:2])
 elif _sys.platform == "cygwin":

Lib/site.py

@@ -434,7 +434,7 @@ def getsitepackages(prefixes=None):
             abi_thread = 't'
         else:
             abi_thread = ''
-        if os.name == 'posix' or (os.name == "nt" and 'mingw' in sys.version.lower()):
+        if os.name == 'posix' or 'mingw' in sys.version.lower():
             libdirs = [sys.platlibdir]
             if sys.platlibdir != "lib":
                 libdirs.append("lib")

Lib/ssl.py

@@ -254,7 +254,7 @@ class _TLSMessageType:
     CHANGE_CIPHER_SPEC = 0x0101
 
 
-if sys.platform == "win32" and sys.version.find("MINGW") == -1:
+if sys.platform == "win32":
     from _ssl import enum_certificates, enum_crls
 
 from socket import socket, SOCK_STREAM, create_connection
@@ -528,7 +528,7 @@ def _load_windows_store_certs(self, storename, purpose):
     def load_default_certs(self, purpose=Purpose.SERVER_AUTH):
         if not isinstance(purpose, _ASN1Object):
             raise TypeError(purpose)
-        if sys.platform == "win32" and sys.version.find("MINGW") == -1:
+        if sys.platform == "win32":
             for storename in self._windows_cert_stores:
                 self._load_windows_store_certs(storename, purpose)
         self.set_default_verify_paths()

Lib/sysconfig/__init__.py

@@ -56,6 +56,7 @@
         'include': '{installed_base}/Include',
         'platinclude': '{installed_base}/Include',
         'scripts': '{base}/Scripts',
+        'data': '{base}',
         },
 
     # Downstream distributors can overwrite the default install scheme.

Modules/getpath.py

@@ -285,6 +285,7 @@ def _normpath(p):
 if py_setpath:
     # When Py_SetPath has been called, executable defaults to
     # the real executable path.
+
     if not executable:
         executable = real_executable