localhost ~ # emerge -pt akonadi-server These are the packages that would be merged, in reverse order: Calculating dependencies... done! [ebuild N ] app-office/akonadi-server-1.2.1 USE="mysql -sqlite" [nomerge ] x11-libs/qt-dbus-4.5.2 [ebuild UD] x11-libs/qt-qt3support-4.5.1 [4.5.2] [ebuild UD] x11-libs/qt-sql-4.5.1 [4.5.2] [ebuild UD] x11-libs/qt-gui-4.5.1 [4.5.2-r2] USE="dbus* gtkstyle%*" [ebuild UD] x11-libs/qt-script-4.5.1 [4.5.2] [ebuild UD] x11-libs/qt-dbus-4.5.1 [4.5.2] [ebuild UD] x11-libs/qt-core-4.5.1 [4.5.2] [blocks B ] x11-libs/qt-opengl-4.5.1-r9999 (">x11-libs/qt-opengl-4.5.1-r9999" is blocking x11-libs/qt-qt3support-4.5.1, x11-libs/qt-script-4.5.1, x11-libs/qt-dbus-4.5.1, x11-libs/qt-core-4.5.1, x11-libs/qt-gui-4.5.1) [blocks B ] >x11-libs/qt-webkit-4.5.1-r9999 (">x11-libs/qt-webkit-4.5.1-r9999" is blocking x11-libs/qt-qt3support-4.5.1, x11-libs/qt-script-4.5.1, x11-libs/qt-dbus-4.5.1, x11-libs/qt-core-4.5.1, x11-libs/qt-gui-4.5.1) [blocks B ] >x11-libs/qt-dbus-4.5.1-r9999 (">x11-libs/qt-dbus-4.5.1-r9999" is blocking x11-libs/qt-qt3support-4.5.1, x11-libs/qt-script-4.5.1, x11-libs/qt-gui-4.5.1, x11-libs/qt-core-4.5.1) [blocks B ] >x11-libs/qt-gui-4.5.1-r9999 (">x11-libs/qt-gui-4.5.1-r9999" is blocking x11-libs/qt-qt3support-4.5.1, x11-libs/qt-script-4.5.1, x11-libs/qt-dbus-4.5.1, x11-libs/qt-core-4.5.1) [blocks B ] >x11-libs/qt-svg-4.5.1-r9999 (">x11-libs/qt-svg-4.5.1-r9999" is blocking x11-libs/qt-qt3support-4.5.1, x11-libs/qt-script-4.5.1, x11-libs/qt-dbus-4.5.1, x11-libs/qt-core-4.5.1, x11-libs/qt-gui-4.5.1) [blocks B ] x11-libs/qt-core-4.5.1-r9999 (">x11-libs/qt-core-4.5.1-r9999" is blocking x11-libs/qt-script-4.5.1, x11-libs/qt-dbus-4.5.1, x11-libs/qt-qt3support-4.5.1, x11-libs/qt-gui-4.5.1) [blocks B ] x11-libs/qt-qt3support-4.5.1-r9999 (">x11-libs/qt-qt3support-4.5.1-r9999" is blocking x11-libs/qt-script-4.5.1, x11-libs/qt-dbus-4.5.1, x11-libs/qt-core-4.5.1, x11-libs/qt-gui-4.5.1) [blocks B ] x11-libs/qt-sql-4.5.1-r9999 (">x11-libs/qt-sql-4.5.1-r9999" is blocking x11-libs/qt-qt3support-4.5.1, x11-libs/qt-script-4.5.1, x11-libs/qt-dbus-4.5.1, x11-libs/qt-core-4.5.1, x11-libs/qt-gui-4.5.1) [blocks B ] >x11-libs/qt-script-4.5.1-r9999 (">x11-libs/qt-script-4.5.1-r9999" is blocking x11-libs/qt-qt3support-4.5.1, x11-libs/qt-dbus-4.5.1, x11-libs/qt-core-4.5.1, x11-libs/qt-gui-4.5.1) [blocks B ] >x11-libs/qt-test-4.5.1-r9999 (">x11-libs/qt-test-4.5.1-r9999" is blocking x11-libs/qt-qt3support-4.5.1, x11-libs/qt-script-4.5.1, x11-libs/qt-dbus-4.5.1, x11-libs/qt-core-4.5.1, x11-libs/qt-gui-4.5.1) [blocks B ] =x11-libs/qt-gui-4.5.0:4[dbus] required by ('ebuild', '/', 'app-office/akonadi-server-1.2.1', 'merge') ('installed', '/', 'x11-libs/qt-sql-4.5.2', 'nomerge') pulled in by >=x11-libs/qt-sql-4.5.0:4[mysql] required by ('ebuild', '/', 'app-office/akonadi-server-1.2.1', 'merge') ('installed', '/', 'x11-libs/qt-test-4.5.2', 'nomerge') pulled in by x11-libs/qt-test required by world ('installed', '/', 'x11-libs/qt-opengl-4.5.2-r1', 'nomerge') pulled in by x11-libs/qt-opengl required by world ('installed', '/', 'x11-libs/qt-svg-4.5.2', 'nomerge') pulled in by x11-libs/qt-svg required by world ('ebuild', '/', 'x11-libs/qt-core-4.5.1', 'merge') pulled in by ~x11-libs/qt-core-4.5.1[-debug] required by ('ebuild', '/', 'x11-libs/qt-dbus-4.5.1', 'merge') ~x11-libs/qt-core-4.5.1[qt3support,-debug] required by ('ebuild', '/', 'x11-libs/qt-qt3support-4.5.1', 'merge') ~x11-libs/qt-core-4.5.1[-debug] required by ('ebuild', '/', 'x11-libs/qt-script-4.5.1', 'merge') (and 2 more) For more information about Blocked Packages, please refer to the following section of the Gentoo Linux x86 Handbook (architecture is irrelevant): http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?full=1#blocked