Is this right? > # eix udev > ...
[U] sys-fs/udev Available versions: 208-r1^t 212-r1^t ~213^t **9999^t {acl doc +firmware-loader gudev introspection +kmod selinux static-libs ABI_MIPS="n32 n64 o32" ABI_X86="32 64 x32"} Installed versions: 208^t{tbz2}(03:30:13 PM 12/08/2013)(acl firmware-loader kmod openrc -doc -gudev -introspection -selinux -static-libs ABI_MIPS="-n32 -n64 -o32" ABI_X86="64 -32 -x32") Homepage: http://www.freedesktop.org/wiki/Software/systemd Description: Linux dynamic and persistent device naming support (aka userspace devfs)
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Installed version shows the openrc USE flag, new version doesn't. And more importantly:
# emerge -pvuDN udev These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild U ] sys-apps/kmod-17 [16] USE="tools zlib -debug -doc -lzma -python% -static-libs (-openrc%*)" PYTHON_TARGETS="python2_7%* python3_3%* -python3_2% (-python3_4)" 1,450 kB [ebuild U ] sys-fs/udev-212-r1 [208] USE="acl firmware-loader kmod -doc -gudev -introspection (-selinux) -static-libs (-openrc%*)" ABI_X86="(64) (-32) (-x32)" 2,660 kB [ebuild N ] virtual/libudev-208:0/1 USE="-static-libs" ABI_X86="(64) (-32) (-x32)" 0 kB [ebuild U ] virtual/udev-208-r2 [208-r1] USE="-gudev -introspection -static-libs (-kmod%*) (-selinux%)" ABI_X86="(64) (-32) (-x32)" 0 kB [ebuild U ] sys-fs/udev-init-scripts-26-r2 [26] 0 kB Total: 5 packages (4 upgrades, 1 new), Size of downloads: 4,110 kB
This clearly shows the -openrc USE flag being applied. Googling didn't reveal an answer...