Switch to packaging and importlib_metadata (fixes Nuitka build)

emailproxy.py

@@ -6,7 +6,7 @@
 __author__ = 'Simon Robinson'
 __copyright__ = 'Copyright (c) 2024 Simon Robinson'
 __license__ = 'Apache 2.0'
-__version__ = '2024-07-08'  # ISO 8601 (YYYY-MM-DD)
+__version__ = '2024-07-29'  # ISO 8601 (YYYY-MM-DD)
 __package_version__ = '.'.join([str(int(i)) for i in __version__.split('-')])  # for pyproject.toml usage only
 
 import abc
@@ -99,14 +99,22 @@ class Icon:
 except ImportError as gui_requirement_import_error:
     MISSING_GUI_REQUIREMENTS.append(gui_requirement_import_error)
 
-with warnings.catch_warnings():
-    warnings.simplefilter('ignore', DeprecationWarning)
+try:
+    # pylint: disable-next=ungrouped-imports
+    import importlib.metadata as importlib_metadata  # get package version numbers - available in stdlib from python 3.8
+except ImportError:
     try:
-        # noinspection PyDeprecation,PyUnresolvedReferences
-        import pkg_resources  # from setuptools - to change to importlib.metadata and packaging.version once min. is 3.8
+        # noinspection PyUnresolvedReferences
+        import importlib_metadata
     except ImportError as gui_requirement_import_error:
         MISSING_GUI_REQUIREMENTS.append(gui_requirement_import_error)
 
+try:
+    # noinspection PyUnresolvedReferences
+    import packaging.version  # parse package version numbers - used to work around various GUI-only package issues
+except ImportError as gui_requirement_import_error:
+    MISSING_GUI_REQUIREMENTS.append(gui_requirement_import_error)
+
 # for macOS-specific functionality
 if sys.platform == 'darwin':
     try:
@@ -2696,13 +2704,12 @@ def macos_nsworkspace_notification_listener_(self, notification):
     # noinspection PyDeprecation
     def create_icon(self):
         # fix pystray <= 0.19.4 incompatibility with PIL 10.0.0+; resolved in 0.19.5 and later via pystray PR #147
-        with warnings.catch_warnings():
-            warnings.simplefilter('ignore', DeprecationWarning)
-            pystray_version = pkg_resources.get_distribution('pystray').version
-            pillow_version = pkg_resources.get_distribution('pillow').version
-            if pkg_resources.parse_version(pystray_version) <= pkg_resources.parse_version('0.19.4') and \
-                    pkg_resources.parse_version(pillow_version) >= pkg_resources.parse_version('10.0.0'):
-                Image.ANTIALIAS = Image.LANCZOS if hasattr(Image, 'LANCZOS') else Image.Resampling.LANCZOS
+        pystray_version = packaging.version.Version(importlib_metadata.version('pystray'))
+        pillow_version = packaging.version.Version(importlib_metadata.version('pillow'))
+        if pystray_version <= packaging.version.Version('0.19.4') and \
+                pillow_version >= packaging.version.Version('10.0.0'):
+            Image.ANTIALIAS = Image.LANCZOS if hasattr(Image, 'LANCZOS') else Image.Resampling.LANCZOS
+
         icon_class = RetinaIcon if sys.platform == 'darwin' else pystray.Icon
         return icon_class(APP_NAME, App.get_image(), APP_NAME, menu=pystray.Menu(
             pystray.MenuItem('Servers and accounts', pystray.Menu(self.create_config_menu)),
@@ -2763,9 +2770,7 @@ def get_icon_size(text, font_size):
         font = ImageFont.truetype(io.BytesIO(zlib.decompress(base64.b64decode(APP_ICON))), size=font_size)
 
         # pillow's getsize method was deprecated in 9.2.0 (see docs for PIL.ImageFont.ImageFont.getsize)
-        # noinspection PyDeprecation
-        if pkg_resources.parse_version(
-                pkg_resources.get_distribution('pillow').version) < pkg_resources.parse_version('9.2.0'):
+        if packaging.version.Version(importlib_metadata.version('pillow')) < packaging.version.Version('9.2.0'):
             font_width, font_height = font.getsize(text)
             return font, font_width, font_height
 
@@ -2906,11 +2911,9 @@ def create_authorisation_window(self, request):
         setattr(authorisation_window, 'get_title', lambda window: window.title)  # add missing get_title method
 
         # pywebview 3.6+ moved window events to a separate namespace in a non-backwards-compatible way
-        # noinspection PyDeprecation
-        pywebview_version = pkg_resources.parse_version(pkg_resources.get_distribution('pywebview').version)
+        pywebview_version = packaging.version.Version(importlib_metadata.version('pywebview'))
         # the version zero check is due to a bug in the Ubuntu 24.04 python-pywebview package - see GitHub #242
-        # noinspection PyDeprecation
-        if pkg_resources.parse_version('0') < pywebview_version < pkg_resources.parse_version('3.6'):
+        if packaging.version.Version('0') < pywebview_version < packaging.version.Version('3.6'):
             # noinspection PyUnresolvedReferences
             authorisation_window.loaded += self.authorisation_window_loaded
         else:

requirements-gui.txt

@@ -1,8 +1,9 @@
 # the standard way to install the proxy and dependencies is `python -m pip install emailproxy` (i.e., direct from PyPI)
 # to install requirements directly, use: `python -m pip install -r requirements-core.txt -r requirements-gui.txt`
 
+importlib_metadata; python_version < '3.8'  # to get dependency versions (available in stdlib from 3.8 onwards)
+packaging  # for dependency version comparisons
 pillow  # to create the menu bar icon image from a TTF icon
-setuptools  # for pkg_resources (checking dependency versions)
 timeago  # for displaying the last authenticated activity hint
 
 # force pystray version with dummy GUI fix for headless deployments (https://github.com/moses-palmer/pystray/issues/118)