*Please describe the question or issue you're facing with "Change from ubuntu@24.04 to ubuntu@26.04 - Rockcraft documentation".* I have rockcraft installed: ```shell $ rockcraft --version rockcraft 1.18.0 ``` Switching `build-base: ubuntu@24.04` to `build-base: ubuntu@26.04` in my `rockcraft.yaml` file results in: ``` Traceback (most recent call last): File "/snap/rockcraft/4445/bin/rockcraft", line 12, in <module> sys.exit(run()) ^^^^^ File "/snap/rockcraft/4445/lib/python3.12/site-packages/rockcraft/cli.py", line 51, in run return app.run() ^^^^^^^^^ File "/snap/rockcraft/4445/lib/python3.12/site-packages/craft_application/application.py", line 685, in run self._initialize_craft_parts() File "/snap/rockcraft/4445/lib/python3.12/site-packages/craft_application/application.py", line 821, in _initialize_craft_parts self._set_plugin_group() File "/snap/rockcraft/4445/lib/python3.12/site-packages/craft_application/application.py", line 809, in _set_plugin_group group = self.services.get_class("lifecycle").get_plugin_group(build_plan[0]) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/snap/rockcraft/4445/lib/python3.12/site-packages/rockcraft/services/lifecycle.py", line 100, in get_plugin_group return plugins.get_plugin_group(str(build_info.build_base)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/snap/rockcraft/4445/lib/python3.12/site-packages/rockcraft/plugins/groups.py", line 52, in get_plugin_group group = _PLUGINS[build_base] ~~~~~~~~^^^^^^^^^^^^ KeyError: 'ubuntu@26.04' ``` Guessing the error is being thrown from https://github.com/canonical/rockcraft/blob/main/rockcraft/plugins/groups.py#L100 Not sure whether the fix is to update the doc for 1.18.0 or fix the app. --- *Reported from: https://documentation.ubuntu.com/rockcraft/1.18.0/how-to/change-from-ubuntu2404-to-ubuntu2604/*