Implemented runtime patch to fix broken Kivy on Python 3.14+

sbapp/compat.py

@@ -0,0 +1,43 @@
+def python314_kivy_patch():
+    print("Running Kivy on Python 3.14+ detected, checking compatibility patch...")
+    import os
+    import importlib.util
+    from pathlib import Path
+
+    def fail_patch():
+        print("Error: Failed to open Kivy's lang/parser.py file for patching.")
+        print("Kivy currently has bugs that prevents it from running on Python 3.14")
+        print("and above, and this file needs to be patched to run Sideband.")
+        print("\nYou can patch this manually by locating the lang/parser.py file")
+        print(f"and replacing:\n\n{kivy_target_1}\n\nWith:\n\n{kivy_patch_1}\n")
+        os._exit(0)
+
+    kivy_target_1 = """        if isinstance(node, (ast.JoinedStr, ast.BoolOp)):
+            for n in node.values:
+                if isinstance(n, ast.Str):
+                    # NOTE: required for python3.6
+                    yield from cls.get_names_from_expression(n.s)
+                else:
+                    yield from cls.get_names_from_expression(n.value)"""
+
+    kivy_patch_1  = """        if isinstance(node, (ast.JoinedStr, ast.BoolOp)):
+            for n in node.values:
+                yield from cls.get_names_from_expression(n.value)"""
+
+    spec = importlib.util.find_spec("kivy")
+    if spec is None or spec.origin is None or spec.submodule_search_locations is None: fail_patch()
+    contents = None
+
+    target_path = f"{spec.submodule_search_locations[0]}/lang/parser.py"
+    with open(target_path, "rb") as fh: contents = fh.read().decode("utf-8")
+    if not contents: fail_patch()
+    contents = contents.replace("\r\n", "\n")
+
+    if kivy_patch_1 in contents: print("Kivy already patched for Python 3.14 compatibility, continuing.")
+    if kivy_target_1 in contents:
+        print("Patching Kivy for Python 3.14 compatibility...")
+        contents = contents.replace(kivy_target_1, kivy_patch_1)
+        if not kivy_patch_1 in contents: fail_patch()
+        with open(target_path, "wb") as fh:
+            fh.write(contents.encode("utf-8"))
+            print("Kivy successfully patched for Python 3.14 compatibility")

sbapp/main.py

@@ -75,7 +75,6 @@ def get_display_res():
             RNS.trace_exception(e)
             return None, None
 
-
 def apply_ui_scale():
     global app_ui_scaling_path
     global app_ui_wcfg_path
@@ -149,6 +148,15 @@ def apply_ui_scale():
         except Exception as e:
             RNS.log(f"Error while reading saved window configuration: {e}", RNS.LOG_ERROR)
 
+###################################################
+# Run-time patch to fix broken Kivy on Python 3.14
+# until a Kivy release is made that actually works.
+#
+if sys.version_info[0] >= 3 and sys.version_info[1] >= 14:
+    if RNS.vendor.platformutils.is_linux():
+        from .compat import python314_kivy_patch
+        python314_kivy_patch()
+
 ###################################################
 # Kivy/SDL2 run-time patch to fix horribly slow
 # window resize updates on Linux. For more info: