d568abea62
When a user has downloaded an add-on as a zip file, it's not clear in advance if this is a legacy add-on or a new extension. So they would have to use trial and error, or inspect the zip file contents. This uses a simple heuristic to check if the file is a legacy add-on, and if so automatically calls the legacy operator instead. The operator now show both extension and legacy add-on properties, with the latter in a default collapsed subpanel. Pull Request: https://projects.blender.org/blender/blender/pulls/121926