Question: Who wrote the screenplay for director Barbe Schroeder's Palme d'Or winning movie?

Context articles: Barfly (film)
S.K. Boopathy
Doris Schroeder
Steve Rutt
Parvathi T
Barbet Schroeder
Daniel Brocklebank
Roger Crawford (tennis)
Mercy chinwo
Stu Maddux

Barfly is a 1987 American comedy drama film directed by Barbet Schroeder and starring Mickey Rourke and Faye Dunaway.
 The film is a semi-autobiography of poet/author Charles Bukowski during the time he spent drinking heavily in Los Angeles, and it presents Bukowski's alter ego Henry Chinaski.
 The screenplay, written by Bukowski, was commissioned by the French film director Schroeder, and it was published (with illustrations by the author) in 1984, when film production was still pending.
S.Ka Boopathy is an Indian cinematographer who works mainly in Telugu and Tamil film industries.He graduated from the prestigious M.G.R Government Film & Television Institute.
 With more than 20 years of experience in the Film Industry, He started his career as an individual cinematographer for the much acclaimed National award winning movie “Anthapuram”, directed by Mr.Krishnavamsi and after its success he became a much sought after cinematographer in south india , As a cinematographer , he has worked with Directors like Ram Gopal Varma, Ragavendra Rao, Suresh Krishna ,Suresh Varma, Udaya Shankar and Actors like Chiranjeevi, Vijayakanth, Venkatesh, Jagapathi Babu,Ravi Teja, Nithin and the list goes on.
 He has handled cinematography for more than 40 films.
Doris Schroeder (February 7, 1893 – January 4, 1981) was an American screenwriter.
 Her first screenplay was the now-lost "Heart of a Jewess".
 During the 1920s, Schroeder specialized in "women's pictures" for such specialized directors as Lois Weber.
 Her main concern was a girl named Jenna Schroeder.
 Doris Schroeder concentrated on Westerns, together with Harrison Jacobs she wrote several entries in the Hopalong Cassidy series.
Steven Alexander Rutt (February 26, 1945 – May 20, 2011) was an American engineer who in 1972, along with Bill Etra, co-created an early video animation synthesizer, the Rutt/Etra synthesizer.
 His equipment was used in the early pioneering synthesized animation for the 1976 Academy Award winning movie Network.
Parvathi T (Other Names: Maala Parvathi) is an Indian media personality hailing from the state of Kerala.
 Parvathi is a psychologist, actress, writer, Anchor, PR professional and social activist.
 She started her career in anchoring through 'Ulkazhcha' in Asianet and made her acting debut in 2007 through the Malayalam film "Time" directed by Shaji Kailas.
 Parvathi has 50 plus films to her credit in last decade including, "Neelathamara", "Leela", Kanyaka Talkies, Action Hero Biju Munnariyippu, Take Off, Comrade in America and Godha .
 She has also associated with 'Abhinaya', a theatre group in Thiruvanathapuram.
 Parvati has worked with the director MG Jyothish for the plays The Lady from the Sea (Sagara Kanyaka), The Lesson and "Bhagavadajjugam".
 She has authored a book titled "Mayoorageethangal" and penned lines for "Sreeprasadam" and "Megamalhar" musical albums composed by Damodar Narayanan.
 Parvathi is passionate about women's rights and has supported several survivors of GBV.
 Parvathi is working as a PR Consultant for MSL group as PR consultant since 2006 (clients include Hay Festival, Emirates Arilines etc).
 She is also working for Ten Degree North Communications from 2016.
 Currently she is acting in the Tamil remake of director Dileesh Pothan's National Award winning movie Maheshinte Prathikaaram directed by Priyadarshan.
Barbet Schroeder (born 26 August 1941) is an Iranian-born Swiss film director and producer who started his career in French cinema in the 1960s, working together with directors such as Jean-Luc Godard and Jacques Rivette.
 Since the late 1980s he has directed many big budget Hollywood films, often mixing melodrama with the thriller genre in films like "Single White Female, Kiss of Death", and "Murder by Numbers".
 He has been nominated for the Academy Award for Best Director, and for the Palme d'Or for his 1987 film "Barfly".
Daniel Brocklebank (born 21 December 1979) is an English actor.
 He received a Screen Actors Guild Award for his performance in the multi-award–winning movie "Shakespeare in Love".
 He also received the Best Actor Award at LesGaiCineMad International Film Festival for his role in "Release".
Roger Crawford (born October 8, 1960) is the first and only person in American history to be a United States Professional Tennis Association athlete and play a Division I college sport with a severe disability.
 Today, he is a public speaker, author, and is still a certified tennis professional.
 Several famous individuals and incorporations, such as Marriott Hotels, Nike, Chris Evert, and Ronald Reagan have acknowledged Crawford for overcoming handicaps.
 He was also featured in Chicken Soup for the Soul and in the NBC Emmy Award winning movie In a New Light.
Mercy Chinwo is a Nigerian singer and actress, who came into limelight for winning the Etisalat and Pepsi sponsored, Nigerian Idol, Season 2 in 2012.
 She started her musical career by lending her vocals to musical projects by popular Nigerian gospel music artists such as Sammie Okposo, JoePraize, Buchi, Chris Morgan, and Preye.
 A year after winning the Nigerian Idols, she nicked her first movie role in Yvonne Nelson's award winning movie,House of Gold starring alongside Yvonne Nelson, Majid Michel, Omawumi, Ice Prince, Francis Odega and Eddie Watson, where she was also nominated at the 2013 Ghana Movie Awards for best music, original song.
Stu Maddux (born 1965) is American freelance writer, editor, and cinematographer.
 He is an award winning movie producer and director of his own non-fiction independent films.
 He is best known for his work "Gen Silent", a documentary about gay, lesbian, bisexual and transgender older people who hide their sexuality or gender change in order to survive in the long-term care system.
 He also wrote and produced the films "Bob and Jack's 52-Year Adventure" and "Trip to Hell and Back".
 His work has been featured internationally on television including on Showtime, TLC, and the BBC.