ncurses не получается обновиться до 6.0

emerge: command-line interface to the Portage system
Usage:
   emerge [ options ] [ action ] [ ebuild | tbz2 | file | @set | atom ] [ ... ]
   emerge [ options ] [ action ] < @system | @world >
   emerge < --sync | --metadata | --info >
   emerge --resume [ --pretend | --ask | --skipfirst ]
   emerge --help
Options: -[abBcCdDefgGhjkKlnNoOpPqrsStuvVw]
          [ --color < y | n >            ] [ --columns    ]
          [ --complete-graph             ] [ --deep       ]
          [ --jobs JOBS ] [ --keep-going ] [ --load-average LOAD            ]
          [ --newrepo   ] [ --newuse     ] [ --noconfmem  ] [ --nospinner   ]
          [ --oneshot   ] [ --onlydeps   ] [ --quiet-build [ y | n ]        ]
          [ --reinstall changed-use      ] [ --with-bdeps < y | n >         ]
Actions:  [ --depclean | --list-sets | --search | --sync | --version        ]

   For more help consult the man page.

emerge -C sys-libs/ncurses
emerge -1 sys-libs/ncurses:0
emerge -NDuv --with-bdeps=y world

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R    ] sys-libs/ncurses-5.9-r3::gentoo  USE="cxx gpm unicode -ada -debug -doc -minimal -profile -static-libs -tinfo -trace" ABI_X86="32 (64) (-x32)" 0 KiB

Total: 1 package (1 reinstall), Size of downloads: 0 KiB

emerge -C sys-libs/ncurses
emerge -1 =sys-libs/ncurses-5.9-r4
emerge -1u =sys-libs/ncurses-6.0

Failed to validate a sane '/dev'.
'/dev/null' is not a device file.

Calculating dependencies... done!
[ebuild  NS   ~] sys-libs/ncurses-5.9-r101:5::gentoo [5.9-r3:0::gentoo] USE="gpm unicode -tinfo" ABI_X86="(64) -32 (-x32)" 0 KiB
[blocks B      ] <sys-libs/ncurses-6:0 ("<sys-libs/ncurses-6:0" is blocking sys-libs/ncurses-5.9-r101)

Total: 1 package (1 in new slot), Size of downloads: 0 KiB
Conflict: 1 block (1 unsatisfied)

 * Error: The above package list contains packages which cannot be
 * installed at the same time on the same system.

  (sys-libs/ncurses-5.9-r3:0/0::gentoo, installed) pulled in by
    sys-libs/ncurses:0=[unicode] required by (media-video/vlc-2.1.5-r1:0/5-7::gentoo, installed)
    >=sys-libs/ncurses-5.9-r3:0=[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(-)?] (>=sys-libs/ncurses-5.9-r3:0=[abi_x86_64(-)]) required by (sys-devel/llvm-3.5.0:0/3.5::gentoo, installed)
    ...
  (sys-libs/ncurses-5.9-r101:5/5::gentoo, ebuild scheduled for merge) pulled in by
    sys-libs/ncurses required by (app-text/hunspell-1.3.3:0/0::gentoo, installed)
    sys-libs/ncurses:5/5=[unicode] required by (media-video/vlc-2.1.5-r1:0/5-7::gentoo, installed)
    >=sys-libs/ncurses-5.2-r2 required by (sys-apps/util-linux-2.25.2-r2:0/0::gentoo, installed)
    ...
The following keyword changes are necessary to proceed:
 (see "package.accept_keywords" in the portage(5) man page for more details)
# required by sys-devel/llvm-3.5.0::gentoo
# required by media-libs/mesa-10.3.7-r1::gentoo[llvm]
# required by x11-base/xorg-server-1.16.4::gentoo[-minimal]
# required by x11-drivers/xf86-video-intel-2.99.917::gentoo[sna]
# required by x11-base/xorg-drivers-1.16::gentoo[video_cards_intel]
=sys-libs/ncurses-5.9-r101 ~amd64

pinkbyte@oas1 ~ $ emerge llvm -pv

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild  N     ] sys-devel/llvm-3.5.0:0/3.5::gentoo  USE="libffi ncurses static-analyzer -clang -debug -doc -gold -libedit -multitarget -ocaml -python {-test} -xml" ABI_X86="(64) -32 (-x32)" PYTHON_TARGETS="python2_7 (-pypy)" VIDEO_CARDS="-radeon" 11 496 KiB

Total: 1 package (1 new), Size of downloads: 11 496 KiB

pinkbyte@oas1 ~ $ eix ncurses -Ic
[I] sys-libs/ncurses (5.9-r3@03.04.2015): console display library

emerge -avuDNp world
...
emerge: there are no ebuilds to satisfy ">=sys-libs/ncurses-5.2:5/6=".
(dependency required by "sys-devel/bc-1.06.95-r2::gentoo" [installed])
(dependency required by "net-print/cups-filters-1.0.71::gentoo" [installed])
(dependency required by "net-print/cups-2.0.3::gentoo" [installed])
(dependency required by "sci-electronics/eagle-7.3.0::gentoo" [installed])
(dependency required by "@selected" [set])
(dependency required by "@world" [argument])

emerge @preserved-rebuild
Failed to validate a sane '/dev'.
'/dev/null' is not a device file.

emerge @preserved-rebuild
Failed to validate a sane '/dev'.
'/dev/null' is not a device file.

ls -la /dev/null
-rw------- 1 root root 0 авг 27 14:35 /dev/null

bash: /dev/null: Отказано в доступе

mknod --mode=666 /dev/null c 1 3

emerge -C sys-libs/ncurses
emerge -1 =sys-libs/ncurses-5.9-r4
emerge -1u =sys-libs/ncurses-6.0

ПРИШЛО ВРЕМЯ ПЕРЕУСТАНАВЛИВАТЬ GEИTOO

Удалил ncurses5.9 не помогло

[user@alexey-laptop] ~
$ eix -I --exact ncurses
[I] sys-libs/ncurses
     Доступные версии:      
     (0)    5.9-r3 (~)5.9-r4 5.9-r5(0/5) (~)6.0-r1(0/6){tbz2}
     (5)    5.9-r99(5/5) (~)5.9-r101(5/5){tbz2} [m](~)6.0(5/6)
       {ada +cxx debug doc gpm minimal profile static-libs test threads tinfo trace unicode ABI_MIPS="n32 n64 o32" ABI_PPC="32 64" ABI_S390="32 64" ABI_X86="32 64 x32"}
     Установленные версии:  5.9-r101(5){tbz2}(14:12:06 07.01.2016)(gpm tinfo unicode ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="32 64 -x32") 6.0-r1{tbz2}(03:45:15 30.12.2015)(cxx gpm threads tinfo unicode -ada -debug -doc -minimal -profile -static-libs -test -trace ABI_MIPS="-n32 -n64 -o32" ABI_PPC="-32 -64" ABI_S390="-32 -64" ABI_X86="32 64 -x32")
     Домашняя страница:     https://www.gnu.org/software/ncurses/ http://dickey.his.com/ncurses/
     Описание:              console display library

[root@alexey-laptop] /home/user
# grep ncurses /etc/portage/ -R
/etc/portage/package.unmask/zzz:=sys-libs/ncurses-6.0-r1
/etc/portage/package.use/custom:sys-libs/ncurses tinfo
/etc/portage/package.mask/custom:>=sys-libs/ncurses-6