bluefish-unstable packages for Etch have been removed from the
repository. The 1.1 development series has been superseeded by the 1.3 series
(1.0 is still the current stable series!), which needs Glib/GTK versions higher
than available in Etch. Unfortunately, the necessary versions are also not
available from backports.org. So I can’t build packages for Etch anymore :(.
If you have some self-packaged or self-compiled versions of these libraries, you can of course build the application from its source.