My attempted update failed by requiring two different versions of xulrunner in the same slot: # emerge --deep --update --newuse world Calculating dependencies... done! [ebuild U ] net-misc/neon-0.28.6 [0.28.4] [ebuild U ] net-libs/xulrunner-1.9.1.2-r1 [1.9.0.11-r1] USE="alsa%* python%* -debug%" [ebuild N ] www-client/epiphany-2.24.3-r10 USE="python -avahi -debug -doc -networkmanager -spell" !!! Multiple package instances within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: net-libs/xulrunner:1.9 ('ebuild', '/', 'net-libs/xulrunner-1.9.1.2-r1', 'merge') pulled in by =net-libs/xulrunner-1.9* required by ('installed', '/', 'dev-python/gtkmozembed-python-2.19.1-r11', 'nomerge') net-libs/xulrunner:1.9 required by ('installed', '/', 'gnome-extra/yelp-2.24.0-r10', 'nomerge') net-libs/xulrunner:1.9 required by world ('installed', '/', 'net-libs/xulrunner-1.9.0.11-r1', 'nomerge') pulled in by =net-libs/xulrunner-1.9.0* required by ('ebuild', '/', 'www-client/epiphany-2.24.3-r10', 'merge') (and 3 more) It may be possible to solve this problem by using package.mask to prevent one of those packages from being selected. However, it is also possible that conflicting dependencies exist such that they are impossible to satisfy simultaneously. If such a conflict exists in the dependencies of two different packages, then those packages can not be installed simultaneously. For more information, see MASKED PACKAGES section in the emerge man page or refer to the Gentoo Handbook. Reproducible: Always Steps to Reproduce: 1. On my system, emerge --deep --update --newuse world 2. 3. Actual Results: emerge bails as pasted above. Expected Results: Emerge should build and install recent updates to my system.
*** This bug has been marked as a duplicate of bug 265700 ***