Please add ebuilds for enlightenment 0.18. Announcement: https://phab.enlightenment.org/phame/live/3/post/enlightenment_dr_0_18_0_release/ Reproducible: Always
i know about the release of e18, but for a simple migration from splitted 1.7 libs to merged efl-1.8 i will likely wait for at least efl-1.8.4. I will add the latest e18 release to the enlightenment overlay later, so you can test/use it from there in the meantime.
x11-wm/enlightenment-0.18.2 [1], dev-libs/efl-1.8.4 and media-libs/elementary-1.8.3 [2] were released in the meantime. [1] https://phab.enlightenment.org/phame/live/3/post/enlightenment_dr_0_18_2_bugfix_release/ [2] https://phab.enlightenment.org/phame/live/3/post/efl_1_8_4_and_elementary_1_8_3_releases/
While you are at it you might want to check this: http://article.gmane.org/gmane.comp.window-managers.enlightenment.user/20512 xcb seems to be going the way of the dodo, so maybe you should mask that flag once e18 enters the tree, in efl and where applicable in the whole E stack.
e18 has been in the main tree for some time now