raised CONSTRAINT_ERROR : GNATdoc.Entities.Entity_Information_Maps.Constant_Reference: key not in map
ERROR: Command ["gnatdoc4", "-P", "xref/gnatcoll_xref.gpr", "--output-dir", "/home/chouteau/src/github/alire/docs.ada.dev/crate/gnatcoll_xref/23.0.0", "--front-matter", "crate: gnatcoll_xref", "--no-subprojects"] exited with code 1