This is the failing run when trying to unmask and showing that it tries to unmask the wrong thing: # emerge -auDN world --jobs=3 These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild U ] sys-kernel/linux-headers-4.4 [4.3] [ebuild U ] sys-libs/glibc-2.23-r4 [2.22-r4] USE="rpc%* -audit% -caps%" [ebuild U ] sys-devel/make-4.2.1 [4.1-r1] [ebuild U ] app-arch/bzip2-1.0.6-r8 [1.0.6-r7] [ebuild U ] sys-devel/gnuconfig-20161104 [20151214] [ebuild U ] sys-libs/libseccomp-2.3.2 [2.3.0] [ebuild U ] dev-libs/libbsd-0.8.3 [0.8.2] [ebuild U ] sys-apps/baselayout-2.3 [2.2] [ebuild U ] media-libs/opus-1.1.3-r1 [1.1] USE="-ambisonics% (-neon)" CPU_FLAGS_X86="sse%*" [ebuild U ] dev-libs/lzo-2.09 [2.08] [ebuild U ] sys-apps/busybox-1.25.1 [1.24.2] [ebuild U ] sci-libs/suitesparseconfig-4.2.1-r1 [4.2.1] ABI_X86="(64%*) -32% (-x32)" [ebuild U ] dev-util/re2c-0.16 [0.13.7.5] [ebuild U ] sys-libs/libutempter-1.1.6-r2 [1.1.6-r1] [ebuild U ] dev-util/boost-build-1.62.0-r1 [1.56.0] [ebuild U ] net-wireless/wireless-regdb-20170307 [20160610] [ebuild U ] sys-process/cronbase-0.3.7-r6 [0.3.7-r5] [ebuild N ] dev-libs/tinyxml-2.6.2-r2 USE="stl -debug -doc -static-libs" [ebuild U ] games-simulation/flightgear-data-2016.4.4 [3.4.0] [ebuild N ] net-libs/udns-0.4 USE="tools -ipv6 -static" [ebuild N ] app-shells/quoter-3.0_p2 [ebuild U ] app-shells/push-2.0 [1.6] [ebuild U ] app-arch/lzip-1.18 [1.16] [ebuild U ] app-arch/unrar-5.5.5-r1 [5.3.11] [ebuild U ] app-admin/tmpwatch-2.11-r2 [2.11] [ebuild U ~] app-emulation/virtualbox-additions-5.1.22 [5.1.6] [ebuild U ] x11-themes/ubuntu-wallpapers-16.10.2 [16.04.1] [ebuild U ~] sys-firmware/intel-microcode-20170511 [20160714] [ebuild U ] app-arch/rar-5.4.0-r1 [5.3.0] [ebuild U ~] sys-apps/cpuid-20170122 [20151017] [ebuild U ] sys-apps/hdparm-9.51 [9.48] [ebuild U ] net-libs/libmnl-1.0.4 [1.0.3-r1] [ebuild U ] sys-libs/timezone-data-2017a [2016e] [ebuild U ] sys-devel/binutils-config-5-r3 [5-r2] [ebuild U ] sys-fs/ddrescue-1.21-r1 [1.20] [ebuild U ] app-dicts/myspell-en-20170101 [20160201] [ebuild U ] virtual/ttf-fonts-1-r1 [1] [ebuild U ] dev-lisp/asdf-3.1.5 [3.0.3] [ebuild U ] dev-lisp/uiop-3.1.5 [3.0.3] [ebuild U ] dev-lisp/sbcl-1.3.11 [1.1.18] [ebuild U ] sys-libs/ncurses-6.0-r1 [5.9-r5] USE="{-test%} -threads%" [ebuild U ] sys-libs/ncurses-5.9-r101 [5.9-r99] [ebuild N ] net-dialup/ppp-scripts-0 [ebuild U ] www-plugins/chrome-binary-plugins-59.0.3071.109 [54.0.2840.59] [ebuild U ] dev-lang/python-exec-2.4.4 [2.0.2] PYTHON_TARGETS="(python3_6%*)" [ebuild U ] x11-base/xorg-drivers-1.19 [1.18-r1] INPUT_DEVICES="keyboard* libinput* mouse* -evdev*" VIDEO_CARDS="-ark% -i915% -i965% (-newport) -sis%" [uninstall ] x11-drivers/xf86-input-evdev-2.10.3 [blocks b ] =sys-libs/ncurses-5.7-r7:0/5= required by (sys-apps/gptfdisk-1.0.1:0/0::gentoo, installed) ^^^^^ (and 6 more with the same problem) media-video/ffmpeg:0 (media-video/ffmpeg-3.2.4:0/55.57.57::gentoo, ebuild scheduled for merge) pulled in by >=media-video/ffmpeg-3.2.4:0=[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?] required by (media-plugins/gst-plugins-libav-1.10.4:1.0/1.0::gentoo, ebuild scheduled for merge) ^^ ^^^^^^^^ (and 2 more with the same problem) (media-video/ffmpeg-2.8.10:0/54.56.56::gentoo, ebuild scheduled for merge) pulled in by >=media-video/ffmpeg-1.2.6-r1:0/54.56.56=[postproc,abi_x86_64(-)] required by (media-plugins/gst-plugins-ffmpeg-0.10.13_p201211-r5:0.10/0.10::gentoo, installed) ^^^^^^^^^^^^ >=media-video/ffmpeg-2.8:0/54.56.56= required by (media-libs/gegl-0.3.8:0.3/0.3::gentoo, installed) ^^^^^^^^^^^^ (and 1 more with the same problems) dev-libs/icu:0 (dev-libs/icu-58.2-r1:0/58.2::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) (dev-libs/icu-57.1:0/57::gentoo, installed) pulled in by >=dev-libs/icu-3.8.1-r1:0/57= required by (net-libs/webkit-gtk-2.4.11-r1:3/25::gentoo, installed) ^^^^^^ dev-libs/icu:0/57= required by (gnome-extra/evolution-data-server-3.20.5:0/57::gentoo, installed) ^^^^^^ (and 6 more with the same problems) dev-lang/ocaml:0 (dev-lang/ocaml-4.02.3:0/4.02.3::gentoo, installed) pulled in by >=dev-lang/ocaml-4:0/4.02.3= required by (app-text/cpdf-2.1.1-r1:0/0::gentoo, installed) ^^^^^^^^^^ (and 1 more with the same problem) (dev-lang/ocaml-4.04.0:0/4.04.0::gentoo, ebuild scheduled for merge) pulled in by >=dev-lang/ocaml-4.02.3-r1:=[ocamlopt?] required by (dev-ml/findlib-1.7.1:0/0::gentoo, ebuild scheduled for merge) ^^ ^^^^^^^^^ dev-libs/kpathsea:0 (dev-libs/kpathsea-6.2.2_p20160523:0/6.2.2::gentoo, ebuild scheduled for merge) pulled in by >=dev-libs/kpathsea-6.2.1 required by (app-text/ps2pkm-1.8_p20160523:0/0::gentoo, ebuild scheduled for merge) ^^ ^^^^^ (and 4 more with the same problem) (dev-libs/kpathsea-6.2.0_p20140525:0/6.2.0::gentoo, installed) pulled in by dev-libs/kpathsea:0/6.2.0= required by (app-text/dvipng-1.15:0/0::gentoo, installed) ^^^^^^^^^ gnome-extra/evolution-data-server:0 (gnome-extra/evolution-data-server-3.22.7:0/59::gentoo, ebuild scheduled for merge) pulled in by >=gnome-extra/evolution-data-server-3.22.6:=[gtk,weather?] required by (mail-client/evolution-3.22.6:2.0/2.0::gentoo, ebuild scheduled for merge) ^^ ^^^^^^ (and 1 more with the same problem) (gnome-extra/evolution-data-server-3.20.5:0/57::gentoo, installed) pulled in by >=gnome-extra/evolution-data-server-3.13.90:0/57=[vala] required by (dev-libs/folks-0.11.3:0/25::gentoo, installed) ^^^^^^ dev-libs/libical:0 (dev-libs/libical-2.0.0-r2:0/2::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) (dev-libs/libical-1.0.1:0/1::gentoo, installed) pulled in by >=dev-libs/libical-0.43:0/1= required by (gnome-extra/evolution-data-server-3.20.5:0/57::gentoo, installed) ^^^^^ media-libs/libwebp:0 (media-libs/libwebp-0.5.2:0/6::gentoo, ebuild scheduled for merge) pulled in by (no parents that aren't satisfied by other packages in this slot) (media-libs/libwebp-0.4.0:0/5::gentoo, installed) pulled in by media-libs/libwebp:0/5= required by (net-libs/webkit-gtk-2.4.11-r1:3/25::gentoo, installed) ^^^^^ media-libs/giflib:0 (media-libs/giflib-5.1.4:0/7::gentoo, ebuild scheduled for merge) pulled in by media-libs/giflib:0/7 required by (dev-java/icedtea-bin-3.4.0:8/8::gentoo, ebuild scheduled for merge) ^^^^ (media-libs/giflib-4.1.6-r3:0/0::gentoo, installed) pulled in by media-libs/giflib:0/0= required by (media-libs/libwebp-0.4.0:0/5::gentoo, installed) ^^^^^ NOTE: Use the '--verbose-conflicts' option to display parents omitted above !!! The slot conflict(s) shown above involve package(s) which may need to !!! be rebuilt in order to solve the conflict(s). However, the following !!! package(s) cannot be rebuilt for the reason(s) shown: (media-libs/libwebp-0.4.0:0/5::gentoo, installed): ebuild is masked or unavailable (gnome-extra/evolution-data-server-3.20.5:0/57::gentoo, installed): ebuild is masked or unavailable (media-plugins/gst-plugins-ffmpeg-0.10.13_p201211-r5:0.10/0.10::gentoo, installed): ebuild is masked or unavailable 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. (dev-texlive/texlive-langenglish-2016:0/0::gentoo, ebuild scheduled for merge) pulled in by >=dev-texlive/texlive-langenglish-2016 required by (app-text/texlive-2016:0/0::gentoo, ebuild scheduled for merge) (sys-libs/ncurses-5.9-r101:5/5::gentoo, ebuild scheduled for merge) pulled in by sys-libs/ncurses:5/5 required by (net-misc/dropbox-21.3.18:0/0::gentoo, ebuild scheduled for merge) (dev-texlive/texlive-langspanish-2016:0/0::gentoo, ebuild scheduled for merge) pulled in by >=dev-texlive/texlive-langspanish-2016 required by (app-text/texlive-2016:0/0::gentoo, ebuild scheduled for merge) (dev-texlive/texlive-latex-2016:0/0::gentoo, ebuild scheduled for merge) pulled in by >=dev-texlive/texlive-latex-2016 required by (dev-texlive/texlive-publishers-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-latex-2016 required by (app-text/texlive-2016:0/0::gentoo, ebuild scheduled for merge) dev-texlive/texlive-latex required by (dev-tex/xcolor-2.12:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-latex-2016 required by (dev-texlive/texlive-music-2016:0/0::gentoo, ebuild scheduled for merge) dev-texlive/texlive-latex required by (dev-tex/latex-beamer-3.36:0/0::gentoo, installed) >=dev-texlive/texlive-latex-2016 required by (dev-texlive/texlive-humanities-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-latex-2008 required by (dev-texlive/texlive-omega-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-latex-2016 required by (dev-texlive/texlive-omega-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-latex-2016 required by (dev-texlive/texlive-bibtexextra-2016:0/0::gentoo, ebuild scheduled for merge) dev-texlive/texlive-latex required by (app-editors/gummi-0.6.6:0/0::gentoo, installed) >=dev-texlive/texlive-latex-2016 required by (dev-texlive/texlive-games-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-latex-2008 required by (dev-texlive/texlive-formatsextra-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-latex-2016 required by (dev-texlive/texlive-latexrecommended-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-latex-2016 required by (dev-texlive/texlive-mathscience-2016:0/0::gentoo, ebuild scheduled for merge) (dev-texlive/texlive-langgerman-2016:0/0::gentoo, ebuild scheduled for merge) pulled in by dev-texlive/texlive-langgerman required by (dev-tex/currvita-0.9i-r1:0/0::gentoo, installed) dev-texlive/texlive-langgerman required by (dev-tex/g-brief-4.0.2:0/0::gentoo, installed) (dev-texlive/texlive-mathscience-2016:0/0::gentoo, ebuild scheduled for merge) pulled in by dev-texlive/texlive-mathscience required by (app-office/lyx-2.1.5-r1:0/0::gentoo, ebuild scheduled for merge) dev-texlive/texlive-mathscience required by (dev-texlive/texlive-xetex-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-mathscience-2016 required by (app-text/texlive-2016:0/0::gentoo, ebuild scheduled for merge) (dev-texlive/texlive-latexrecommended-2016:0/0::gentoo, ebuild scheduled for merge) pulled in by dev-texlive/texlive-latexrecommended required by (dev-tex/dot2texi-3.0:0/0::gentoo, installed) dev-texlive/texlive-latexrecommended required by (virtual/latex-base-1.0:0/0::gentoo, installed) dev-texlive/texlive-latexrecommended required by (dev-tex/pgf-3.0.1-r1:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-latexrecommended-2016 required by (app-text/texlive-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-latexrecommended-2016 required by (dev-texlive/texlive-latexextra-2016:0/0::gentoo, ebuild scheduled for merge) dev-texlive/texlive-latexrecommended required by (dev-tex/glossaries-3.04:0/0::gentoo, installed) (dev-texlive/texlive-basic-2016:0/0::gentoo, ebuild scheduled for merge) pulled in by >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-fontsextra-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-luatex-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-formatsextra-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-xetex-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-pictures-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-plainextra-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-fontsrecommended-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-fontutils-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-pstricks-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-genericrecommended-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-genericextra-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (app-text/texlive-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-omega-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-langenglish-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-latex-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-langspanish-2016:0/0::gentoo, ebuild scheduled for merge) >=dev-texlive/texlive-basic-2016 required by (dev-texlive/texlive-langgerman-2016:0/0::gentoo, ebuild scheduled for merge) For more information about Blocked Packages, please refer to the following section of the Gentoo Linux x86 Handbook (architecture is irrelevant): https://wiki.gentoo.org/wiki/Handbook:X86/Working/Portage#Blocked_packages The following mask changes are necessary to proceed: (see "package.unmask" in the portage(5) man page for more details) # required by sci-mathematics/octave-4.2.1::gentoo[gui] # required by sci-mathematics/qtoctave-0.10.1-r1::gentoo # required by @selected # required by @world (argument) # /usr/portage/profiles/package.mask: # Davide Pesavento (25 Feb 2017) # Library name changed in 2.10, breaking many consumers. # Needs full revdep testing. =x11-libs/qscintilla-2.10 NOTE: The --autounmask-keep-masks option will prevent emerge from creating package.unmask or ** keyword changes. Would you like to add these changes to your config files? [Yes/No] No * In order to avoid wasting time, backtracking has terminated early * due to the above autounmask change(s). The --autounmask-backtrack=y * option can be used to force further backtracking, but there is no * guarantee that it will produce a solution. !!! The following installed packages are masked: - app-text/acroread-9.5.5-r3::gentoo (masked by: package.mask) /usr/portage/profiles/package.mask: # Andreas K. Hüttel (8 June 2017) # Dead upstream for >3 years. Closed source. Bundles outdated # libraries that certainly have known security issues (e.g., # icu-36 (!) or curl). Does not start anymore but segfaults. # Removal in 30 days. - media-plugins/gst-plugins-ffmpeg-0.10.13_p201211-r5::gentoo (masked by: package.mask) /usr/portage/profiles/package.mask: # Mart Raudsepp (16 Feb 2017) # Old gstreamer 0.10 version, which is security vulnerable. # Use gstreamer:1.0 with media-plugins/gst-plugins-libav # instead (despite the name, it uses media-video/ffmpeg too). # Please keep this mask entry until gstreamer:0.10 is still # in tree or at least gets an affecting GLSA from bug 601354 # Bug #594878. For more information, see the MASKED PACKAGES section in the emerge man page or refer to the Gentoo Handbook. !!! All ebuilds that could satisfy "x11-base/xorg-server:0/1.18.4=" have been masked. !!! One of the following masked packages is required to complete your request: - x11-base/xorg-server-1.18.4::gentoo (masked by: ) (dependency required by "x11-drivers/xf86-video-vesa-2.3.4::gentoo" [installed]) (dependency required by "x11-base/xorg-drivers-1.19::gentoo[video_cards_vesa]" [ebuild]) (dependency required by "x11-base/xorg-server-1.19.3::gentoo[xorg]" [ebuild]) (dependency required by "x11-drivers/xf86-input-keyboard-1.9.0::gentoo" [ebuild]) For more information, see the MASKED PACKAGES section in the emerge man page or refer to the Gentoo Handbook.