Indicate that Blender needs a restart if BBIM was reinstalled

Example - https://i.imgur.com/lbP4PqO.png

src/blenderbim/blenderbim/__init__.py

@@ -51,9 +51,14 @@ def get_last_commit_hash() -> Union[str, None]:
     return last_commit_hash[:7]
 
 
+# Accessed from blenderbim extension:
+bbim_semver: dict[str, Any] = {}
+
+# Accessed from blenderbim dependency:
 last_error = None
 last_actions: deque = deque(maxlen=10)
-bbim_semver: dict[str, Any] = {}
+FIRST_INSTALLED_BBIM_VERSION: Union[str, None] = None
+REINSTALLED_BBIM_VERSION: Union[str, None] = None
 
 
 def initialize_bbim_semver():
@@ -237,6 +242,12 @@ if IN_BLENDER:
 
             import blenderbim.bim
 
+            current_version = bbim_semver["version"]
+            if blenderbim.FIRST_INSTALLED_BBIM_VERSION is None:
+                blenderbim.FIRST_INSTALLED_BBIM_VERSION = current_version
+            elif not blenderbim.REINSTALLED_BBIM_VERSION and blenderbim.FIRST_INSTALLED_BBIM_VERSION != current_version:
+                blenderbim.REINSTALLED_BBIM_VERSION = current_version
+
             blenderbim.bim.register()
 
         def unregister():

src/blenderbim/blenderbim/bim/module/debug/operator.py

@@ -775,6 +775,7 @@ class ToggleDetailedIOSLogs(bpy.types.Operator):
 class RestartBlender(bpy.types.Operator):
     bl_idname = "bim.restart_blender"
     bl_label = "Restart Blender"
+    bl_description = "Blender will be immediately restarted, save your data first before running this operator"
     bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):

src/blenderbim/blenderbim/bim/ui.py

@@ -434,11 +434,21 @@ class BIM_PT_tabs(Panel):
             row = self.layout.row(align=True)
             row.prop(aprops, "tab", text="")
 
+            if blenderbim.REINSTALLED_BBIM_VERSION:
+                box = self.layout.box()
+                box.alert = True
+
+                box.label(text="BlenderBIM requires Blender to restart.", icon="ERROR")
+                box.label(text="BlenderBIM was reinstalled in the current session:")
+                box.label(text=f"{blenderbim.FIRST_INSTALLED_BBIM_VERSION} -> {blenderbim.REINSTALLED_BBIM_VERSION}")
+                box.label(text="Please restart Blender to avoid potential issues.")
+                box.operator("bim.restart_blender", text="Restart Blender", icon="BLENDER")
+
             if blenderbim.last_error:
                 box = self.layout.box()
                 box.alert = True
                 row = box.row(align=True)
-                row.label(text="BlenderBIM experienced an error :(", icon="ERROR")
+                box.label(text="BlenderBIM experienced an error :(", icon="ERROR")
                 row.operator("bim.close_error", text="", icon="CANCEL")
                 if platform.system() == "Windows":
                     box.operator("wm.console_toggle", text="View the console for full logs.", icon="CONSOLE")
@@ -692,6 +702,7 @@ class BIM_PT_tab_services(Panel):
     def draw(self, context):
         pass
 
+
 class BIM_PT_tab_lighting(Panel):
     bl_label = "Lighting"
     bl_space_type = "PROPERTIES"