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d669bcfeb1
ComfyUI failed to start when the assets database packages (sqlalchemy, alembic, blake3) were missing, e.g. in a venv not re-synced after requirements.txt changed. That happened with assets off too, although that mode never needs them. - The asset imports in lifecycle.py, manager.py and server.py are guarded by db.py's existing dependencies_available() check. Without the packages, NoAssets registers no asset routes and temp cleanup still runs. - --enable-assets without the packages logs which packages are missing, prints the install command, and continues with assets disabled. - /view resolves blake3: filenames only when assets are enabled. Trade-off: if assets are turned off on an install whose saved workflows hold blake3: widget values, those previews return 404. Running such workflows already fails, since execution never resolves hashes.
Pytest Unit Tests
Install test dependencies
pip install -r tests-unit/requirements.txt
Run tests
pytest tests-unit/