!!! Multiple package instances within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: app-text/poppler:0 (app-text/poppler-0.22.5::gentoo, installed) pulled in by >=app-text/poppler-0.12.3-r3:0/37= required by (app-text/texlive-core-2012-r1::gentoo, installed) app-text/poppler:0/37 required by (app-office/libreoffice-bin-4.1.2.3::gentoo, ebuild scheduled for merge) app-text/poppler:0/37=[xpdf-headers(+)] required by (dev-tex/luatex-0.70.1-r2::gentoo, installed) app-text/poppler:0/37=[cxx,jpeg,lcms,tiff,xpdf-headers(+)] required by (net-print/cups-filters-1.0.36-r1::gentoo, installed) (app-text/poppler-0.24.3::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) dev-libs/gobject-introspection:0 (dev-libs/gobject-introspection-1.32.1::gentoo, installed) pulled in by <dev-libs/gobject-introspection-1.36.0 required by (x11-misc/lightdm-1.4.0-r2::gentoo, ebuild scheduled for merge) (dev-libs/gobject-introspection-1.36.0-r1::gentoo, ebuild scheduled for merge) pulled in by >=dev-libs/gobject-introspection-1.34.2 required by (media-libs/cogl-1.14.1_pre20130901-r1::gentoo, ebuild scheduled for merge) (and 2 more with the same problem) dev-libs/glib:2 (dev-libs/glib-2.32.4-r1::gentoo, installed) pulled in by <dev-libs/glib-2.33:2 required by (dev-libs/gobject-introspection-1.32.1::gentoo, installed) (dev-libs/glib-2.36.4-r1::gentoo, ebuild scheduled for merge) pulled in by >=dev-libs/glib-2.36.4:2 required by (dev-util/gdbus-codegen-2.36.4-r1::gentoo, ebuild scheduled for merge) (and 20 more with the same problem) dev-libs/gobject-introspection-common:0 (dev-libs/gobject-introspection-common-1.32.1::gentoo, installed) pulled in by <dev-libs/gobject-introspection-common-1.35.9 required by (dev-libs/gobject-introspection-1.32.1::gentoo, installed) (dev-libs/gobject-introspection-common-1.36.0::gentoo, ebuild scheduled for merge) pulled in by >=dev-libs/gobject-introspection-common-1.36.0 required by (dev-libs/gobject-introspection-1.36.0-r1::gentoo, ebuild scheduled for merge) dev-libs/libgpg-error:0 (dev-libs/libgpg-error-1.12::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) (dev-libs/libgpg-error-1.12::gentoo, installed) pulled in by dev-libs/libgpg-error[static-libs] required by (sys-power/suspend-1.0::gentoo, installed) dev-libs/libgcrypt:0 (dev-libs/libgcrypt-1.5.3::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) (dev-libs/libgcrypt-1.5.3::gentoo, installed) pulled in by dev-libs/libgcrypt[static-libs] required by (sys-power/suspend-1.0::gentoo, installed) dev-libs/icu:0 (dev-libs/icu-51.1::gentoo, installed) pulled in by dev-libs/icu:0/51.1= required by (media-libs/raptor-2.0.9::gentoo, installed) dev-libs/icu:0/51.1 required by (app-office/libreoffice-bin-4.1.2.3::gentoo, ebuild scheduled for merge) dev-libs/icu:0/51.1= required by (media-libs/libvisio-0.0.30::gentoo, installed) dev-libs/icu:0/51.1= required by (media-libs/libcdr-0.0.14::gentoo, installed) dev-libs/icu:0/51.1= required by (app-text/libmspub-0.0.6::gentoo, installed) dev-libs/icu:0/51.1= required by (media-libs/harfbuzz-0.9.12::gentoo, installed) (dev-libs/icu-51.2-r1::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) media-libs/harfbuzz:0 (media-libs/harfbuzz-0.9.12::gentoo, installed) pulled in by =media-libs/harfbuzz-0.9.12 required by (app-office/libreoffice-bin-4.1.2.3::gentoo, ebuild scheduled for merge) (media-libs/harfbuzz-0.9.23::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) media-libs/gst-plugins-base:1.0 (media-libs/gst-plugins-base-1.0.10::gentoo, installed) pulled in by (no parents that aren't satisfied by other packages in this slot) (media-libs/gst-plugins-base-1.0.10::gentoo, ebuild scheduled for merge) pulled in by media-libs/gst-plugins-base:1.0[introspection?,ogg,pango,theora,vorbis,X] required by (media-video/cheese-3.8.3::gentoo, ebuild scheduled for merge) sys-libs/zlib:0 (sys-libs/zlib-1.2.8-r1::gentoo, installed) pulled in by >=sys-libs/zlib-1.2.5.1-r2[minizip] required by (media-video/vlc-2.0.7::gentoo, ebuild scheduled for merge) (sys-libs/zlib-1.2.8-r1::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) 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.  * Error: The above package list contains packages which cannot be  * installed at the same time on the same system. 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 The following USE changes are necessary to proceed: (see "package.use" in the portage(5) man page for more details) # required by media-video/cheese-3.8.3 # required by @selected # required by @world (argument) >=media-libs/libcanberra-0.30-r1 gtk3 # required by media-video/cheese-3.8.3 # required by @selected # required by @world (argument) =media-libs/gst-plugins-base-1.0.10 theora Use --autounmask-write to write changes to config files (honoring CONFIG_PROTECT). Carefully examine the list of proposed changes, paying special attention to mask or keyword changes that may expose experimental or unstable packages.