vivid shipped with webkit2gtk 2.6 (you seem to be confusing with webkit1) epiphany in wily is built against webkit2gtk 2.8, in fact that is a hard dependency for 3.16.
Unfortuantely it is not possible to backport major releases to stable release of Ubuntu, so this can't be fixed in vivid or earlier -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to epiphany-browser in Ubuntu. https://bugs.launchpad.net/bugs/1474910 Title: Desktop notifications not supported Status in Ubuntu GNOME: New Status in epiphany-browser package in Ubuntu: New Bug description: Epiphany doesn't support desktop notifications on current Ubuntu releases. This requires libwebkitgtk 2.8 with libnotify support. Currently Ubuntu appears to only ship with 2.4, so this package will need updating. https://bugzilla.gnome.org/show_bug.cgi?id=749792 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-gnome/+bug/1474910/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp