Jython-2.7.0-r2 depends on dev-java/icu4j:52. Emerging jython tries first to install dev-java/icu4j-54.1.1, which fails to bug https://bugs.gentoo.org/614482 .
Created attachment 558814 [details] jython-2.7.0-r3 The attached ebuild depends on dev-java/icu4j:56 and emerges jython-2.7.0.
*** This bug has been marked as a duplicate of bug 614482 ***