def run_migrations_offline():
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """

    project_path = get_project_path()
    project_config = get_project_config(project_path)
    backend = get_backend(project_path,project_config,initialize_db = False)
    url = str(backend.engine.url)
    with backend.transaction():
        context.configure(
            connection=backend.connection,
            url=url, target_metadata=backend.metadata,
            literal_binds=True)

        with context.begin_transaction():
            context.run_migrations()