calculate ~ # emerge -s calculate-source Local copy of remote index is up-to-date and will be used. Searching... [ Results for search key : calculate-source ] [ Applications found : 1 ] * sys-kernel/calculate-sources Latest version available: 3.5.4-r1 Latest version installed: 3.5.3-r2 Size of files: 79,394 kB Homepage: http://www.calculate-linux.org Description: Full sources including the Calculate patchset for the 3.5 kernel tree License: GPL-2 freedist calculate ~ # emerge -av calculate-sources Local copy of remote index is up-to-date and will be used. These are the packages that would be merged, in order: Calculating dependencies... done! [binary U ] sys-apps/calculate-builder-2.2.30-r3::calculate [2.2.30::calculate] 64 kB [ebuild NS ] sys-kernel/calculate-sources-3.5.4-r1::calculate [3.5.3-r2::calculate] USE="symlink vmlinuz -build -minimal" 79,395 kB Total: 2 packages (1 upgrade, 1 in new slot, 1 binary), Size of downloads: 79,458 kB !!! Multiple package instances within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: sys-apps/calculate-builder:0 (sys-apps/calculate-builder-2.2.30::calculate, installed) pulled in by =sys-apps/calculate-builder-2.2.30 required by (sys-apps/calculate-utilities-2.2.30-r1::calculate, installed) (sys-apps/calculate-builder-2.2.30-r3::calculate, binary scheduled for merge) pulled in by >=sys-apps/calculate-builder-2.2.30-r3 required by (sys-kernel/calculate-sources-3.5.4-r1::calculate, ebuild scheduled for merge) 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. You may want to try a larger value of the --backtrack option, such as --backtrack=30, in order to see if that will solve this conflict automatically. For more information, see MASKED PACKAGES section in the emerge man page or refer to the Gentoo Handbook.
sys-apps/calculate-utilities by command
emerge -u calculate-utilities
After that install the kernel.