### Bug Description The pack command errors in an ugly way when there are no valid platforms. ### To Reproduce see below ### part yaml ```shell ``` ### Relevant log output ```shell 2025-03-27 15:47:45 Error executing google:ubuntu-24.04-64:tests/spread/core24/platforms:build_for_no_match (mar271510-010725) : ----- + cd ./snaps/build-for-no-match + [[ -e expected-failure.txt ]] + call_args= + [[ -e arguments.txt ]] ++ cat arguments.txt + call_args='--build-for armhf' + env_vars= + [[ -e environmental-variables.txt ]] + eval snapcraft pack --destructive-mode --build-for armhf + MATCH -f expected-failure.txt grep error: pattern not found, got: ++ snapcraft pack --destructive-mode --build-for armhf snapcraft internal error: RuntimeError('Cannot generate a project that builds on amd64 and builds for armhf') Full execution log: '/root/.local/state/snapcraft/log/snapcraft-20250327-154744.732845.log' Traceback (most recent call last): File "/snap/snapcraft/x1/bin/snapcraft", line 8, in <module> sys.exit(main()) ^^^^^^ File "/snap/snapcraft/x1/lib/python3.12/site-packages/snapcraft/application.py", line 462, in main return app.run() ^^^^^^^^^ File "/snap/snapcraft/x1/lib/python3.12/site-packages/craft_application/application.py", line 613, in run return_code = self._run_inner() ^^^^^^^^^^^^^^^^^ File "/snap/snapcraft/x1/lib/python3.12/site-packages/snapcraft/application.py", line 174, in _run_inner return_code = super()._run_inner() ^^^^^^^^^^^^^^^^^^^^ File "/snap/snapcraft/x1/lib/python3.12/site-packages/craft_application/application.py", line 579, in _run_inner project_service.configure(platform=platform, build_for=build_for) File "/snap/snapcraft/x1/lib/python3.12/site-packages/craft_application/services/project.py", line 100, in configure raise RuntimeError( RuntimeError: Cannot generate a project that builds on amd64 and builds for armhf ```