Ugly hack but it allows the app to start

dronecan_gui_tool/main.py

@@ -60,7 +60,7 @@
 # Start method must be configured globally, and only once. Using 'spawn' ensures full compatibility with Windoze.
 # We need to check first if the start mode is already configured, because this code will be re-run for every child.
 #
-if multiprocessing.get_start_method(True) != 'spawn':
+if multiprocessing.get_start_method(allow_none=True) is None:
     multiprocessing.set_start_method('spawn')
 
 #

dronecan_gui_tool/widgets/__init__.py

@@ -8,7 +8,7 @@
 
 import os
 import re
-import pkg_resources
+#import pkg_resources
 import queue
 from PyQt5.QtWidgets import QTableWidget, QTableWidgetItem, QAbstractItemView, QHeaderView, QApplication, QWidget, \
     QComboBox, QCompleter, QPushButton, QHBoxLayout, QVBoxLayout, QMessageBox
@@ -639,12 +639,12 @@ def get_app_icon():
     except NameError:
         pass
     # noinspection PyBroadException
-    try:
-        fn = pkg_resources.resource_filename('dronecan_gui_tool', os.path.join('icons', 'dronecan_gui_tool.png'))
-        _APP_ICON_OBJECT = QIcon(fn)
-    except Exception:
-        logger.error('Could not load icon', exc_info=True)
-        _APP_ICON_OBJECT = QIcon()
+    #try:
+    #    fn = pkg_resources.resource_filename('dronecan_gui_tool', os.path.join('icons', 'dronecan_gui_tool.png'))
+    #    _APP_ICON_OBJECT = QIcon(fn)
+    #except Exception:
+    #    logger.error('Could not load icon', exc_info=True)
+    _APP_ICON_OBJECT = QIcon()
     return _APP_ICON_OBJECT
 
 

pyproject.toml

@@ -2,5 +2,5 @@
 # you need to drop setup_requires from setup.py as well.
 # https://peps.python.org/pep-0518/#rationale
 [build-system]
-requires = ["setuptools>=42",'setuptools_git>=1.0']
+requires = ["setuptools>=42",'setuptools<81','setuptools_git>=1.0']
 build-backend = "setuptools.build_meta"