pub fn fusions_chain(
root: &Path,
hardware: &str,
) -> Result<Vec<PathBuf>, LayoutError>Expand description
2026-09-30: The FUSIONS.toml files hardware plans with, base first; empty when neither the
class nor an ancestor declares rules. A cycle, an unreadable FUSIONS.toml or an inherits
that is not a class name is an error, not a shorter list: a list that stopped early would
leave an ancestor’s rules out of the hash.