Module hook 

Hook installation helpers.

miette stores its error hook in a process-global OnceLock, which means miette::set_hook succeeds only on the first call and refuses subsequent attempts with InstallError. To give callers mutable, idempotent semantics — swap the footer at any time, call install_* twice without panicking — we install a single wrapper handler that reads from our own, mutable footer slot at render time.

The net effect for callers: all three install_* functions are safe to call in any order, any number of times.

Functions

install_panic_hook

Install the miette panic hook, routing panics through the same graphical report pipeline.

install_report_handler

Install the default miette graphical report handler.

install_with_footer

Install the report handler (if not already) and register a closure that appends a tool-specific support footer to every rendered diagnostic.