Revision 1.33, Sync live and non-live ebuilds, added two patches which do not apply to cairo master. The revision added: epatch "${FILESDIR}"/${PN}-1.12.12-disable-test-suite.patch epatch "${FILESDIR}"/${PN}-1.12.14-libpng16.patch Neither applies to master because they COME from cairo master. The second one is even git-format-patch(1) output.
Actually only the second patch came from cairo master. But I dropped them both now. Thanks for the report!