See https://www.seamonkey-project.org/releases/seamonkey2.49.1/ - now builds against Gtk3 by default (finally!) - uses firefox esr52 branch as a base - drop gettext MODULE - simplify gdata-provider/lightning extension installation - add a bunch of patches reverting commits from #1402645 and #1346939 (plus various hacks) to build gdata-provider/lightning/chatzilla/dom inspector again - once repack issues are solved upstream, they will be reverted anyway. Tested working fine on amd64.