Croissant Tasks: A Metadata Format for Reproducible Machine Learning Evaluations. - Omar Benjelloun; Leonardo Martins Bianco; Isabelle Guyon; Thanh Gia Hieu Khuong; Jonathan Lebensold; Sebastian Lobentanzer; Luis Oala; Benedictus Kent Rachmat; Ihsan Ullah; Peyman Vahidi; Joaquin Vanschoren (CoRR, 2026)