In GNOME 49, gdk-pixbuf uses glycin (a next generation image loader written in Rust) by default instead of loading images itself or with plugins. gdk-pixbuf is used for all GTK apps so this change is far-reaching. Debian's gdk-pixbuf hasn't switched to glycin yet except in Experimental.
The webp-pixbuf-loader .deb package would no longer be useful for architectures that have switched to gdk-pixbuf+glycin. However, there are several Debian ports that don't have a build of glycin yet. Is it possible and practical for a Debian source package like webp-pixbuf-loader to build binary packages only for Debian ports? I assume the package wouldn't be able to migrate to Testing since ports don't use Testing. Another example is jpeg-xl which has a binary package, libjxl-gdk-pixbuf, but builds several other binary packages. Is this situation documented anywhere? Thank you, Jeremy Bícha

