The at-api-1.17 ebuild (from the Gnome overlay) states a dependency on atk-1.12. However, it fails to build with that version of atk; only after updating to atk-1.17 the build succeeds. Reproducible: Always Steps to Reproduce: 1. Install atk-1.12. 2. Try to install at-spi-1.17: fails. 3. Now install atk-1.17. 4. Try to install at-spi-1.17: succeeds.
Fixed, thanks.