# date
Tue Mar 27 07:17:22 MSK 2018

#ego sync

# emerge -auDN @world

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

Calculating dependencies... done!
[ebuild  N     ] sys-devel/llvm-common-6.0.0
[ebuild     U  ] net-wireless/wireless-regdb-20171223-r1 [20170307]
[ebuild  NS    ] sys-kernel/gentoo-sources-4.15.13 [4.15.12] USE="-build -experimental -symlink"
[ebuild     U  ] sys-libs/libomp-6.0.0 [4.0.0] USE="-cuda% -offload%"
[ebuild  NS    ] sys-devel/llvm-6.0.0 [3.9.1-r1] USE="libffi ncurses xml -debug -doc -gold -libedit {-test} -xar" ABI_X86="32 (64) (-x32)" LLVM_TARGETS="AMDGPU BPF NVPTX (X86) -AArch64 -ARM -Hexagon -Lanai -MSP430 -Mips -PowerPC -Sparc -SystemZ -XCore"
[ebuild     U  ] sys-apps/portage-2.3.25_beta2 [2.3.18-r2]
[ebuild  NS    ] sys-devel/clang-6.0.0 [3.9.1-r100] USE="static-analyzer xml -debug -default-compiler-rt -default-libcxx -doc {-test} (-z3)" ABI_X86="(64) -32 (-x32)" LLVM_TARGETS="AMDGPU BPF NVPTX (X86) -AArch64 -ARM -Hexagon -Lanai -MSP430 -Mips -PowerPC -Sparc -SystemZ -XCore" PYTHON_TARGETS="python2_7"
[ebuild  N     ] sys-libs/compiler-rt-sanitizers-6.0.0  USE="clang {-test}"
[ebuild  N     ] sys-libs/compiler-rt-6.0.0  USE="clang {-test}"
[ebuild  NS    ] sys-devel/clang-runtime-6.0.0 [3.9.1] USE="compiler-rt openmp sanitize -libcxx" ABI_X86="(64) -32 (-x32)"
[blocks B      ] sys-devel/clang:0 ("sys-devel/clang:0" is blocking sys-devel/clang-6.0.0)
[blocks B      ] sys-devel/llvm:0 ("sys-devel/llvm:0" is blocking sys-devel/llvm-common-6.0.0, sys-devel/llvm-6.0.0)
[blocks B      ] <sys-devel/llvm-4.0.0_rc:0 ("<sys-devel/llvm-4.0.0_rc:0" is blocking sys-devel/clang-6.0.0)

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

  sys-devel/llvm-3.9.1-r1:0/3.9.1::core-kit, installed pulled in by
    <sys-devel/llvm-6:=[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-devel/llvm-6:=[abi_x86_32(-),abi_x86_64(-)]) required by media-libs/mesa-17.2.8:0/0::xorg-kit, installed
    <sys-devel/llvm-6:0/3.9.1=[abi_x86_32(-),abi_x86_64(-)] required by media-libs/mesa-17.2.8:0/0::xorg-kit, installed
    ~sys-devel/llvm-3.9.1[clang(-),-debug,python,static-analyzer,llvm_targets_AMDGPU,llvm_targets_BPF,llvm_targets_NVPTX,llvm_targets_X86,abi_x86_64(-)] required by sys-devel/clang-3.9.1-r100:0/3.9.1::core-kit, installed
    >=sys-devel/llvm-3.9.0:0[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-devel/llvm-3.9.0:0[abi_x86_32(-),abi_x86_64(-)]) required by media-libs/mesa-17.2.8:0/0::xorg-kit, installed

  sys-devel/llvm-6.0.0:6/6::llvm-kit, ebuild scheduled for merge pulled in by
    >=sys-devel/llvm-6 required by sys-libs/compiler-rt-6.0.0:6.0.0/6.0.0::llvm-kit, ebuild scheduled for merge
    >=sys-devel/llvm-6 required by sys-libs/compiler-rt-sanitizers-6.0.0:6.0.0/6.0.0::llvm-kit, ebuild scheduled for merge
    sys-devel/llvm required by www-client/firefox-58.0.1:0/0::net-kit, installed
    ~sys-devel/llvm-6.0.0:6=[debug=,llvm_targets_AArch64?,llvm_targets_AMDGPU?,llvm_targets_ARM?,llvm_targets_BPF?,llvm_targets_Hexagon?,llvm_targets_Lanai?,llvm_targets_Mips?,llvm_targets_MSP430?,llvm_targets_NVPTX?,llvm_targets_PowerPC?,llvm_targets_Sparc?,llvm_targets_SystemZ?,llvm_targets_X86?,llvm_targets_XCore?,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-devel/llvm-6.0.0:6=[-debug,llvm_targets_AMDGPU,llvm_targets_BPF,llvm_targets_NVPTX,llvm_targets_X86,abi_x86_64(-)]) required by sys-devel/clang-6.0.0:6/6::llvm-kit, ebuild scheduled for merge

  sys-devel/clang-6.0.0:6/6::llvm-kit, ebuild scheduled for merge pulled in by
    sys-devel/clang required by www-client/firefox-58.0.1:0/0::net-kit, installed
    sys-devel/clang required by sys-libs/compiler-rt-6.0.0:6.0.0/6.0.0::llvm-kit, ebuild scheduled for merge
    sys-devel/clang required by sys-libs/compiler-rt-sanitizers-6.0.0:6.0.0/6.0.0::llvm-kit, 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