File fix-build-without-qtcore.patch of Package python-PyQt6

Index: pyqt6-6.8.1/project.py
===================================================================
--- pyqt6-6.8.1.orig/project.py
+++ pyqt6-6.8.1/project.py
@@ -180,7 +180,8 @@ del find_qt
             'win32':    'Windows',
         }
 
-        self.bindings['QtCore'].tags.append(
+        if QtCore in self.bindings:
+            self.bindings['QtCore'].tags.append(
                 platform_tags_map.get(self.py_platform, 'Linux'))
 
         # Make sure the bindings are buildable.