sudoky-savant (used in meta/lib/oeqa/runtime/buildsudoku.py and meta/lib/oeqa/sdk/buildsudoku.py) depends on Gtk+2. We're removing Gtk+2 from core-image-sato so this should be fixed. Porting sudoku-savant to Gtk+3 is likely to be non-trivial (they have custom drawing code). Better alternative would be to replace it. The new app should be not totally trivial to build: sudoku-savant has both C++ and Gtk+, something similar would be good. Ross is adding gtk+ to the sdk as a stop gap solution: this should be reverted once this issue is fixed.
galculator is gtk+3 and has otherwise minimal dependencies. Patch sent!
Fixed as of oe-core aaccc1109fbdda72ffc5b5e66177d00b365d267b.
Verified on Bug 10028