I'm thinking about closing this bug since the real bug is https://bugs.debian.org/1100054 and practically we're going to fix things there rather than change gobject-introspection.
This issue isn't causing practical problems for users of Debian, it's just preventing building a bunch of Rust packages using gir-rust-code-generator once an intermediate package (like glib2.0 already in Testing or libadwaita-1 migrating to Testing now) is built with gobject-introspection >= 1.83. Thank you, Jeremy Bícha
