In "Violette," Emmanuelle Devos plays a talented artist and an emotional wreck - a woman as incapable of writing a boring sentence as she was of escaping her own self-loathing. The film about novelist Violette Leduc was written and directed by Martin Provost, who gave us "Seraphine," a reasonably absorbing drama about the life of Seraphine de Senlis, a painter who spent most of her life cleaning houses and staring off into space. In the life of Leduc, Provost has more to work with - a tempestuous personality, raging ambition, relationships with men, relationships with women, plus appearances by midcentury French notables, including writer and philosopher Simone de Beauvoir, perfectly played by Sandrine Kiberlain.