Description of problem: function create_distro in data_setup is not working properly when passing value to argument arches is not list of unicode elements. Tests may pass list of Arch instances and this is not properly handled. This problem is caused by SQLAlchemy. In version 1.1 they added a new feature called "Specific checks added for passing mapped classes, instances as SQL literals" Version-Release number of selected component (if applicable): 26.4 SQLAlchemy 1.1+ How reproducible: Execute test suite with SQLAlchemy 1.1+ Steps to Reproduce: 1. 2. 3. Actual results: sqlalchemy.exc.ArgumentError: Object <> is not legal as a SQL literal value Expected results: Runtime without errors. Additional info: