Just like gconf, gsettings need some magic done in postinst. Guacamayo has one.
Test build running now.
Patch sent to oe-core.
Merged into oe-core rev ba9d5626174c1144b83963755ef310328306c3a3.
Verified with e5c3513ca8abb21eb5e9b8c19d1b9199b14ae07c. file meta/classes/gsettings.bbclass exists.