# emerge -auNDv --with-bdeps=y --complete-graph=y @world --tree

 * IMPORTANT: 3 news items need reading for repository 'funtoo-overlay'.
 * IMPORTANT: 13 news items need reading for repository 'gentoo'.
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These are the packages that would be merged, in reverse order:

Calculating dependencies... done!
[nomerge       ] sys-apps/logwatch-7.4.0_p170-r1 
[ebuild     U  ]  dev-perl/Sys-CPU-0.610.0 [0.540.0-r1] 7 kB
[nomerge       ] virtual/man-0 
[nomerge       ]  sys-apps/man-db-2.7.0.2::funtoo-overlay  USE="berkdb gdbm nls zlib -static-libs" 
[ebuild     U  ]   app-text/po4a-0.45-r2 [0.45-r1] USE="{-test}" LINGUAS="es%* -af% -ca% -cs% -da% -de% -eo% -et% -eu% -fr% -hr% -id% -it% -ja% -kn% -ko% -nb% -nl% -pl% -pt% -pt_BR% -ru% -sl% -sv% -uk% -vi% -zh_CN% -zh_HK%" 0 kB
[nomerge       ] app-editors/vim-7.4.527  USE="acl cscope gpm nls python -X -debug -lua -luajit -minimal -perl -racket -ruby (-selinux) -tcl -vim-pager" PYTHON_SINGLE_TARGET="python2_7 -python3_3 -python3_4" PYTHON_TARGETS="python2_7 python3_3 -python3_4" 
[nomerge       ]  app-editors/vim-core-7.4.527  USE="acl nls -minimal" 
[ebuild     U  ]   app-vim/gentoo-syntax-20141129 [20141102] USE="-ignore-glep31" 25 kB
[nomerge       ] app-text/po4a-0.45-r2 [0.45-r1] USE="{-test}" LINGUAS="es%* -af% -ca% -cs% -da% -de% -eo% -et% -eu% -fr% -hr% -id% -it% -ja% -kn% -ko% -nb% -nl% -pl% -pt% -pt_BR% -ru% -sl% -sv% -uk% -vi% -zh_CN% -zh_HK%" 
[ebuild     U  ]  virtual/perl-Module-Build-0.420.500-r1 [0.420.500] 0 kB
[ebuild  N     ]   perl-core/Module-Build-0.420.500  USE="{-test}" 302 kB
[ebuild  N     ]    virtual/perl-Archive-Tar-1.960.0  0 kB
[ebuild  N     ]    virtual/perl-CPAN-Meta-2.140.640  0 kB
[ebuild  N     ]     virtual/perl-JSON-PP-2.272.30  0 kB
[ebuild  N     ]    virtual/perl-ExtUtils-CBuilder-0.280.217  0 kB
[ebuild  N    #]    virtual/perl-ExtUtils-Install-1.670.0  0 kB
[ebuild  N     ]    virtual/perl-ExtUtils-Manifest-1.630.0-r1  0 kB
[ebuild  N     ]    virtual/perl-ExtUtils-ParseXS-3.240.0  0 kB
[ebuild  N     ]    virtual/perl-Getopt-Long-2.420.0-r1  0 kB
[ebuild  N     ]    virtual/perl-Module-Metadata-1.0.19  0 kB
[ebuild  N     ]    virtual/perl-Parse-CPAN-Meta-1.441.400  0 kB
[ebuild  N     ]    virtual/perl-Perl-OSType-1.7.0  0 kB
[ebuild  N     ]    virtual/perl-Test-Harness-3.330.0  0 kB
[ebuild  N     ]    virtual/perl-Test-Simple-1.1.2  0 kB
[ebuild  N     ]    virtual/perl-Text-ParseWords-3.290.0-r1  0 kB
[ebuild  N     ]    virtual/perl-version-0.990.900  0 kB
[ebuild  N     ]    virtual/perl-CPAN-Meta-YAML-0.12.0  0 kB
[nomerge       ] dev-vcs/git-2.2.0  USE="blksha1 curl gpg highlight iconv nls pcre perl python threads webdav -cgi -cvs -doc -emacs -gnome-keyring -gtk -mediawiki (-ppcsha1) -subversion {-test} -tk -xinetd" PYTHON_TARGETS="python2_7" 
[nomerge       ]  app-crypt/gnupg-2.0.26-r2  USE="bzip2 mta nls readline usb -doc -ldap (-selinux) -smartcard -static -tools" 
[ebuild     U  ]   dev-libs/libassuan-2.1.3 [2.1.2] USE="-static-libs" 504 kB
[nomerge       ] sys-fs/e2fsprogs-1.42.12  USE="nls -static-libs" 
[nomerge       ]  sys-devel/gettext-0.19.3  USE="acl cxx java ncurses nls openmp -cvs -doc -emacs -git -static-libs" 
[nomerge       ]   dev-java/java-config-2.2.0-r1000:2  PYTHON_ABIS="2.7 3.2 3.3 -2.6 -3.1 -3.4" 
[nomerge       ]    dev-java/java-config-wrapper-0.16 
[ebuild     U  ]     app-portage/portage-utils-0.53::funtoo-overlay [0.21-r1::gentoo] USE="nls%* -static" 395 kB

Total: 23 packages (6 upgrades, 17 new), Size of downloads: 1,232 kB

The following mask changes are necessary to proceed:
 (see "package.unmask" in the portage(5) man page for more details)
# required by perl-core/Module-Build-0.420.500
# required by virtual/perl-Module-Build-0.420.500-r1
# required by app-text/po4a-0.45-r2
# required by sys-apps/man-db-2.7.0.2::funtoo-overlay[nls]
# required by virtual/man-0
# required by @system
# required by @world (argument)
# /etc/portage/package.mask:
=virtual/perl-ExtUtils-Install-1.670.0

NOTE: The --autounmask-keep-masks option will prevent emerge
      from creating package.unmask or ** keyword changes.

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.