More reliable way to get bbim package name #5214

See #5214 for details, can't rely on 'bpy.context.preferences.addons' as it may contain a missing addons too (if addon was manually uninstalled and it won't be able to load but it will still appear in 'addons').

src/bonsai/bonsai/__init__.py

@@ -59,6 +59,7 @@ last_error = None
 last_actions: deque = deque(maxlen=10)
 FIRST_INSTALLED_BBIM_VERSION: Union[str, None] = None
 REINSTALLED_BBIM_VERSION: Union[str, None] = None
+REGISTERED_BBIM_PACKAGE: str
 
 
 def initialize_bbim_semver():
@@ -238,6 +239,10 @@ if IN_BLENDER:
             if platform.system() == "Windows":
                 clean_up_dlls_safe_links()
 
+            import bonsai
+
+            bonsai.REGISTERED_BBIM_PACKAGE = __package__
+
             import bonsai.bim
 
             current_version = bbim_semver["version"]

src/bonsai/bonsai/tool/blender.py

@@ -1114,10 +1114,7 @@ class Blender(bonsai.core.tool.Blender):
 
     @classmethod
     def get_blender_addon_package_name(cls) -> str:
-        for package_name in bpy.context.preferences.addons.keys():
+        return bonsai.REGISTERED_BBIM_PACKAGE
-            if package_name.endswith(".bonsai"):
-                return package_name
-        return "bonsai"
 
     @classmethod
     def get_bbim_extension_package(cls) -> types.ModuleType:
@@ -1151,6 +1148,10 @@ class Blender(bonsai.core.tool.Blender):
 
         for package_name in bpy.context.preferences.addons.keys():
             if package_name.endswith(".sun_position"):
-                sun_position = importlib.import_module(package_name)
+                try:
+                    sun_position = importlib.import_module(package_name)
+                    return sun_position
+                except ModuleNotFoundError:
+                    pass
 
         return sun_position

src/ifcsverchok/__init__.py

@@ -36,7 +36,7 @@ import bpy
 logger = logging.getLogger("sverchok.ifc")
 
 
-def get_blender_addon_package_name(addon_name: str) -> types.ModuleType:
+def get_blender_addon_package_by_name(addon_name: str) -> types.ModuleType:
     # Check for legacy addons.
     if addon_name in bpy.context.preferences.addons:
         return importlib.import_module(addon_name)
@@ -44,20 +44,23 @@ def get_blender_addon_package_name(addon_name: str) -> types.ModuleType:
         raise ModuleNotFoundError
 
     # Check for Blender extensions.
-    bbim_package_name = None
+    addon_package = None
     for package_name in bpy.context.preferences.addons.keys():
         if package_name.endswith(f".{addon_name}"):
-            bbim_package_name = package_name
+            try:
-    if bbim_package_name is None:
+                addon_package = importlib.import_module(package_name)
+            except ModuleNotFoundError:
+                pass
+    if addon_package is None:
         raise ModuleNotFoundError
-    return importlib.import_module(bbim_package_name)
+    return addon_package
 
 
 def ensure_addons_are_enabled(*addon_names: str) -> None:
     errors = []
     for addon_name in addon_names:
         try:
-            module = get_blender_addon_package_name(addon_name)
+            module = get_blender_addon_package_by_name(addon_name)
             # `__addon_enabled__` is not present if addon wasn't enabled before
             if not getattr(module, "__addon_enabled__", False):
                 errors.append(f"- Addon {addon_name} appears to be disabled, it should be enabled before IFC Sverchok.")