allow continuing on unsupported platform if desired

portable_computing_toolkit_installer/ui/installer_wizard.py

@@ -111,27 +111,27 @@ class InstallerWizard(QtWidgets.QWizard):
             return False
 
         if not platform.system() == 'Windows' or int(platform.release()) < 7:
-            reply.abort()
-            process_dialog.cancel()
-            self._display_error("This toolkit requires Microsoft Windows 7 or newer")
-            return False
-        elif not platform.machine() == 'AMD64':
-            reply.abort()
-            process_dialog.cancel()
-            self._display_error("Parts of this toolkit require a 64-bit processor. Please open an issue on Github if you absolutely need it all 32-bit")\
-                .buttonClicked.connect(lambda: webbrowser.open_new_tab(self._project_page/"issues"))
-            return False
-        else:
-            while reply.isRunning():
-                QtWidgets.QApplication.instance().processEvents()
-                QtCore.QThread.currentThread().msleep(100)
-            if not reply.error():
-                self.license.setHtml(bytearray(reply.readAll()).decode("utf-8"))
-                return True
-            else:
-                self._display_error(f"Encountered a {QtCore.QMetaEnum.valueToKey(reply.error())} while testing Internet connectivity")
+            if QtWidgets.QMessageBox.question(self, "", "This toolkit requires Microsoft Windows 7 or newer to be used. Continue anyway?") in (QtWidgets.QMessageBox.No, 0):
+                reply.abort()
+                process_dialog.cancel()
                 return False
 
+        if not platform.machine().lower() in ('amd64', 'x86_64'):
+            if QtWidgets.QMessageBox.question(self, "", "Parts of this toolkit require a 64-bit processor.  Continue anyway?") in (QtWidgets.QMessageBox.No, 0):
+                reply.abort()
+                process_dialog.cancel()
+                return False
+
+        while reply.isRunning():
+            QtWidgets.QApplication.instance().processEvents()
+            QtCore.QThread.currentThread().msleep(100)
+        if not reply.error():
+            self.license.setHtml(bytearray(reply.readAll()).decode("utf-8"))
+            return True
+        else:
+            self._display_error(f"Encountered an error while testing Internet connectivity:\n\n{reply.errorString()}")
+            return False
+
     def _display_error(self, message, details = None):
         """Displays an error message.
 
@@ -365,7 +365,7 @@ class InstallerWizard(QtWidgets.QWizard):
         assert self._download_error.empty()
 
 
-    @QtCore.pyqtSignal(str, int, int)
+    @QtCore.pyqtSlot(str, int, int)
     def track_progress(self, tool_name, bytes_received, bytes_total):
         if tool_name not in [tool["name"] for tool in self.__tools__]:
             return