### Bug Description Snapcraft assumes the kernel architecture is the userspace architecture. ``` craft_parts.errors.InvalidArchitecture: Architecture 'armv8l' is not supported. Make sure the architecture name is correct. ``` ### To Reproduce On e.g. a Raspberry Pi: ``` $ lxc launch jammy/armhf jammy-armhf $ lxc shell jammy-armhf $ snapcraft ### part yaml _No response_ ### Relevant log output ```shell $ snapcraft --verbose --destructive-mode Starting Snapcraft 8.0.2 Logging execution to '/root/.local/state/snapcraft/log/snapcraft-20240208-122038.888225.log' Running on armhf for armhf T raceback (most recent call last): File "/snap/snapcraft/10428/bin/snapcraft", line 8, in <module> sys.exit(run()) File "/snap/snapcraft/10428/lib/python3.10/site-packages/snapcraft/cli.py", line 258, in run _run_dispatcher(dispatcher, global_args) File "/snap/snapcraft/10428/lib/python3.10/site-packages/snapcraft/cli.py", line 230, in _run_dispatcher dispatcher.run() File "/snap/snapcraft/10428/lib/python3.10/site-packages/craft_cli/dispatcher.py", line 487, in run return self._loaded_command.run(self._parsed_command_args) File "/snap/snapcraft/10428/lib/python3.10/site-packages/snapcraft/commands/lifecycle.py", line 265, in run super().run(parsed_args) File "/snap/snapcraft/10428/lib/python3.10/site-packages/snapcraft/commands/lifecycle.py", line 138, in run parts_lifecycle.run(self.name, parsed_args) File "/snap/snapcraft/10428/lib/python3.10/site-packages/snapcraft/parts/lifecycle.py", line 97, in run _expand_environment( File "/snap/snapcraft/10428/lib/python3.10/site-packages/snapcraft/parts/lifecycle.py", line 616, in _expand_environment info = craft_parts.ProjectInfo( File "/snap/snapcraft/10428/lib/python3.10/site-packages/craft_parts/infos.py", line 97, in __init__ self._set_machine(arch) File "/snap/snapcraft/10428/lib/python3.10/site-packages/craft_parts/infos.py", line 310, in _set_machine raise errors.InvalidArchitecture(self._host_arch) craft_parts.errors.InvalidArchitecture: Architecture 'armv8l' is not supported. Make sure the architecture name is correct. ```