emerge -1avt systemd These are the packages that would be merged, in reverse order:
Calculating dependencies... done! [ebuild R ] sys-apps/systemd-218-r5:0/2::gentoo USE="acl gudev introspection kmod lz4 pam policykit python seccomp ssl (-apparmor) -audit -cryptsetup -curl -doc -elfutils -gcrypt -http -idn -kdbus -lzma -qrcode (-selinux) -sysv-utils -terminal {-test} -vanilla -xkb" ABI_X86="(64) -32 (-x32)" PYTHON_SINGLE_TARGET="python2_7 -python3_3 -python3_4" PYTHON_TARGETS="python2_7 python3_4 -python3_3" 0 KiB Total: 1 package (1 reinstall), Size of downloads: 0 KiB WARNING: One or more updates/rebuilds have been skipped due to a dependency conflict: sys-apps/systemd:0 (sys-apps/systemd-226-r2:0/2::gentoo, ebuild scheduled for merge) conflicts with >=sys-apps/systemd-212-r5:0/2[abi_x86_64(-),gudev(-),introspection(-)] required by (virtual/libgudev-215-r3:0/0::gentoo, installed) sys-apps/systemd[python(-),python_targets_python2_7(-),python_single_target_python2_7(+),python_targets_python3_4(-)] required by (net-analyzer/fail2ban-0.9.2:0/0::gentoo, installed) Would you like to merge these packages? [Yes/No]