This is a qt4, qt5 versus (-qt4), (-qt5) issue. For several packages, USE="qt4 qt5" has been eliminated. kde-frameworks/kdelibs-4.14.37 is a required dependency for (at least): equery d kde-frameworks/kdelibs * These packages depend on kde-frameworks/kdelibs: app-office/libreoffice-bin-5.4.5.1 (kde ? >=kde-frameworks/kdelibs-4.14.37:4) (kde ? kde-frameworks/kdelibs) kde-plasma/breeze-5.12.4 (qt4 ? kde-frameworks/kdelibs:4) kde-plasma/oxygen-5.12.4 (qt4 ? kde-frameworks/kdelibs:4) I haven't yet checked if kdelibs is a requried dependency for app-office/libre-6.* but I believe this is the case as well. # equery d kde-plasma/breeze * These packages depend on kde-plasma/breeze: kde-plasma/kwin-5.12.4 (>=kde-plasma/breeze-5.12.4:5) kde-plasma/plasma-desktop-5.12.4 (>=kde-plasma/breeze-5.12.4:5) kde-plasma/plasma-integration-5.12.4 (>=kde-plasma/breeze-5.12.4:5) kde-plasma/plasma-meta-5.12.4 (>=kde-plasma/breeze-5.12.4:5) kde-frameworks/kde-libs-4.14.37 requires the "r1" version ebuilds of it's own dependencies. This results in infinite cycling of @world @preserved-rebuild. # emerge -uND @world Calculating dependencies... done! >>> Verifying ebuild manifests >>> Emerging (1 of 5) dev-libs/libdbusmenu-qt-0.9.3_pre20160218-r2::gentoo >>> Installing (1 of 5) dev-libs/libdbusmenu-qt-0.9.3_pre20160218-r2::gentoo >>> Emerging (2 of 5) app-crypt/qca-2.1.3-r2::gentoo >>> Installing (2 of 5) app-crypt/qca-2.1.3-r2::gentoo >>> Emerging (3 of 5) sys-auth/polkit-qt-0.112.0_p20160416-r2::gentoo >>> Installing (3 of 5) sys-auth/polkit-qt-0.112.0_p20160416-r2::gentoo >>> Emerging (4 of 5) media-libs/phonon-4.10.0::gentoo >>> Installing (4 of 5) media-libs/phonon-4.10.0::gentoo >>> Emerging (5 of 5) media-libs/phonon-gstreamer-4.9.0-r2::gentoo >>> Installing (5 of 5) media-libs/phonon-gstreamer-4.9.0-r2::gentoo >>> Jobs: 5 of 5 complete Load avg: 9.77, 9.31, 8.01 >>> Auto-cleaning packages... >>> No outdated packages were found on your system. * GNU info directory index is up-to-date. !!! existing preserved libs: >>> package: app-crypt/qca-2.1.3-r2 * - /usr/lib64/libqca.so.2 * - /usr/lib64/libqca.so.2.1.3 * used by /usr/lib64/libplasma.so.3.0.0 (kde-frameworks/kdelibs-4.14.37) >>> package: sys-auth/polkit-qt-0.112.0_p20160416-r2 * - /usr/lib64/libpolkit-qt-core-1.so.1 * - /usr/lib64/libpolkit-qt-core-1.so.1.112.0 * used by /usr/lib64/kde4/plugins/kauth/backend/kauth_backend_plugin.so (kde-frameworks/kdelibs-4.14.37) >>> package: dev-libs/libdbusmenu-qt-0.9.3_pre20160218-r2 * - /usr/lib64/libdbusmenu-qt.so.2 * - /usr/lib64/libdbusmenu-qt.so.2.6.0 * used by /usr/lib64/libkdeui.so.5.14.37 (kde-frameworks/kdelibs-4.14.37) >>> package: media-libs/phonon-4.10.0 * - /usr/lib64/libphonon.so.4 * - /usr/lib64/libphonon.so.4.9.1 * used by /usr/lib64/kde4/kfileaudiopreview.so (kde-frameworks/kdelibs-4.14.37) * used by /usr/lib64/libkhtml.so.5.14.37 (kde-frameworks/kdelibs-4.14.37) * used by /usr/lib64/libknotifyconfig.so.4.14.37 (kde-frameworks/kdelibs-4.14.37) * used by /usr/lib64/libplasma.so.3.0.0 (kde-frameworks/kdelibs-4.14.37) Use emerge @preserved-rebuild to rebuild packages using these libraries * IMPORTANT: config file '/etc/signon-ui/webkit-options.d/www.facebook.com.conf' needs updating. * See the CONFIGURATION FILES and CONFIGURATION FILES UPDATE TOOLS * sections of the emerge man page to learn how to update config files. * After world updates, it is important to remove obsolete packages with * emerge --depclean. Refer to `man emerge` for more information. # emerge -p @preserved-rebuild These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild UD ] dev-libs/libdbusmenu-qt-0.9.3_pre20160218-r1 [0.9.3_pre20160218-r2] USE="qt4%*" ABI_X86="32%* (64%*) (-x32)" [ebuild UD ] app-crypt/qca-2.1.3-r1 [2.1.3-r2] USE="qt4%* qt5%*" [ebuild UD ] sys-auth/polkit-qt-0.112.0_p20160416-r1 [0.112.0_p20160416-r2] USE="qt4%*" [ebuild UD ] media-libs/phonon-4.9.1-r1 [4.10.0] USE="qt4%* qt5%*" ABI_X86="32%* (64%*) (-x32)" [ebuild UD ] media-libs/phonon-gstreamer-4.9.0-r1 [4.9.0-r2] USE="qt4%* qt5%*" [ebuild R ] kde-frameworks/kdelibs-4.14.37 # emerge @preserved-rebuild Calculating dependencies... done! >>> Verifying ebuild manifests >>> Emerging (1 of 6) dev-libs/libdbusmenu-qt-0.9.3_pre20160218-r1::gentoo >>> Installing (1 of 6) dev-libs/libdbusmenu-qt-0.9.3_pre20160218-r1::gentoo >>> Emerging (2 of 6) app-crypt/qca-2.1.3-r1::gentoo >>> Installing (2 of 6) app-crypt/qca-2.1.3-r1::gentoo >>> Emerging (3 of 6) sys-auth/polkit-qt-0.112.0_p20160416-r1::gentoo >>> Installing (3 of 6) sys-auth/polkit-qt-0.112.0_p20160416-r1::gentoo >>> Emerging (4 of 6) media-libs/phonon-4.9.1-r1::gentoo >>> Installing (4 of 6) media-libs/phonon-4.9.1-r1::gentoo >>> Emerging (5 of 6) media-libs/phonon-gstreamer-4.9.0-r1::gentoo >>> Installing (5 of 6) media-libs/phonon-gstreamer-4.9.0-r1::gentoo >>> Emerging (6 of 6) kde-frameworks/kdelibs-4.14.37::gentoo To "break" the cycle and allow me to use --depclean, I've added the following temporay mask: # cat /etc/portage/package.mask/break-cycle =media-libs/phonon-gstreamer-4.9.0-r2 =media-libs/phonon-4.10.0 =sys-auth/polkit-qt-0.112.0_p20160416-r2 =app-crypt/qca-2.1.3-r2 =dev-libs/libdbusmenu-qt-0.9.3_pre20160218-r2
This is a result of you mixing arch and ~arch packages. >I haven't yet checked if kdelibs is a requried dependency for app-office/libre-6.* but I believe this is the case as well. LO-6 does not depend on kdelibs, it would enable you to drop it.
