I downloaded a fresh checkout of ChromeOS last night, and overnight I did setup_board, build_packages and build_image for the "nautilus" board.

Then this morning I tried to do:
$ cros_workon --board=nautilus start power_manager
$ cros_workon_make --board=nautilus power_manager

This last command failed with a rather cryptic error:
/build/nautilus/tmp/portage/chromeos-base/power_manager-9999/work/power_manager-9999/common-mk/platform2.py --libdir=/usr/lib64 --use_flags=abi_x86_64 amd64 board_use_nautilus cras cros-debug display_backlight elibc_glibc kernel_linux keyboard_includes_side_buttons powerknobs test unibuild userland_GNU --jobs=56 --action=configure --cache_dir=/build/nautilus/tmp/portage/chromeos-base/power_manager-9999/work/build /build/nautilus/tmp/portage/chromeos-base/power_manager-9999/work/power_manager-9999/power_manager/power_manager.gyp --platform_subdir=power_manager --iuse_flags=-als buffet +cras cros_embedded +display_backlight -has_keyboard_backlight -keyboard_includes_side_buttons -legacy_power_button -mosys_eventlog +powerknobs systemd +touchpad_wakeup -touchscreen_wakeup unibuild board_use_acorn board_use_amd64-corei7 board_use_amd64-generic board_use_amd64-generic-cheets board_use_amd64-generic-goofy board_use_amd64-generic_embedded board_use_amd64-generic_mobbuild board_use_amd64-host board_use_aplrvp board_use_aries board_use_arkham board_use_arm-generic board_use_arm64-generic board_use_arm64-llvmpipe board_use_asuka board_use_atlas board_use_auron board_use_auron_paine board_use_auron_pearlvalley board_use_auron_yuna board_use_banjo board_use_banon board_use_bayleybay board_use_beaglebone board_use_beaglebone_servo board_use_beaglebone_vv1 board_use_beltino board_use_betty board_use_betty-arc64 board_use_betty-arcnext board_use_blackwall board_use_bob board_use_bobcat board_use_bolt board_use_bruteus board_use_buddy board_use_butterfly board_use_bwtm2 board_use_candy board_use_capri board_use_capri-zfpga board_use_caroline board_use_caroline-arc64 board_use_caroline-arcnext board_use_caroline-ndktranslation board_use_caroline-userdebug board_use_cardhu board_use_cave board_use_celes board_use_celes-cheets board_use_chell board_use_chell-cheets board_use_cheza board_use_cid board_use_clapper board_use_cnlrvp board_use_cobblepot board_use_coral board_use_cosmos board_use_cranky board_use_cyan board_use_cyan-cheets board_use_cyclone board_use_daisy board_use_daisy_embedded board_use_daisy_skate board_use_daisy_snow board_use_daisy_spring board_use_daisy_winter board_use_dalmore board_use_danger board_use_danger_embedded board_use_dragonegg board_use_duck board_use_edgar board_use_elm board_use_elm-cheets board_use_enguarde board_use_eve board_use_eve-arcnext board_use_eve-campfire board_use_eve-kvm board_use_eve-swap board_use_eve-userdebug board_use_expresso board_use_falco board_use_falco_gles board_use_falco_li board_use_fb1 board_use_fizz board_use_fizz-accelerator board_use_fizz-moblab board_use_foster board_use_gale board_use_gandof board_use_glados board_use_glados-cheets board_use_glimmer board_use_glimmer-cheets board_use_glkrvp board_use_gnawty board_use_gonzo board_use_gru board_use_grunt board_use_grunt-ndktranslation board_use_guado board_use_guado-accelerator board_use_guado-macrophage board_use_guado_moblab board_use_guado_labstation board_use_hana board_use_heli board_use_hsb board_use_iclrvp board_use_ironhide board_use_jadeite board_use_jecht board_use_kayle board_use_kblrvp board_use_kefka board_use_kevin board_use_kevin-arcnext board_use_kevin-tpm2 board_use_kidd board_use_kip board_use_klang board_use_kukui board_use_kunimitsu board_use_lakitu board_use_lakitu-gpu board_use_lakitu-st board_use_lakitu_mobbuild board_use_lakitu-nc board_use_lakitu_next board_use_lars board_use_laser board_use_lasilla-ground board_use_lasilla-sky board_use_lassen board_use_leon board_use_link board_use_loonix board_use_lulu board_use_lulu-cheets board_use_lumpy board_use_macchiato-ground board_use_mappy board_use_mappy_flashstation board_use_marble board_use_mccloud board_use_meowth board_use_metis board_use_minnowboard board_use_mipseb-n32-generic board_use_mipseb-n64-generic board_use_mipseb-o32-generic board_use_mipsel-n32-generic board_use_mipsel-n64-generic board_use_mipsel-o32-generic board_use_moblab-generic-vm board_use_monroe board_use_moose board_use_nami board_use_nautilus board_use_nefario board_use_newbie board_use_ninja board_use_nocturne board_use_novato board_use_novato-arc64 board_use_novato-arcnext board_use_nyan board_use_nyan_big board_use_nyan_blaze board_use_nyan_kitty board_use_oak board_use_oak-cheets board_use_octavius board_use_octopus board_use_orco board_use_panda board_use_panther board_use_panther_embedded board_use_panther_goofy board_use_panther_moblab board_use_parrot board_use_parrot32 board_use_parrot64 board_use_parrot_ivb board_use_pbody board_use_peach board_use_peach_kirby board_use_peach_pi board_use_peach_pit board_use_peppy board_use_plaso board_use_poppy board_use_ppcbe-32-generic board_use_ppcbe-64-generic board_use_ppcle-32-generic board_use_ppcle-64-generic board_use_puppy board_use_purin board_use_pyro board_use_quawks board_use_rainier board_use_rambi board_use_rammus board_use_raspberrypi board_use_reef board_use_relm board_use_reks board_use_reptile board_use_rikku board_use_rizer board_use_romer board_use_rotor board_use_rowan board_use_rush board_use_rush_ryu board_use_sama5d3 board_use_samus board_use_samus-cheets board_use_sand board_use_scarlet board_use_scarlet-arcnext board_use_sentry board_use_setzer board_use_shogun board_use_sklrvp board_use_slippy board_use_smaug board_use_smaug-cheets board_use_smaug-kasan board_use_snappy board_use_sonic board_use_soraka board_use_squawks board_use_stelvio board_use_storm board_use_storm_nand board_use_stout board_use_strago board_use_stumpy board_use_stumpy_moblab board_use_stumpy_pico board_use_sumo board_use_swanky board_use_tails board_use_tatl board_use_tael board_use_tegra3-generic board_use_terra board_use_tidus board_use_tricky board_use_ultima board_use_umaro board_use_veyron board_use_veyron_fievel board_use_veyron_gus board_use_veyron_jaq board_use_veyron_jerry board_use_veyron_mickey board_use_veyron_mighty board_use_veyron_minnie board_use_veyron_minnie-cheets board_use_veyron_nicky board_use_veyron_pinky board_use_veyron_remy board_use_veyron_rialto board_use_veyron_shark board_use_veyron_speedy board_use_veyron_speedy-cheets board_use_veyron_thea board_use_veyron_tiger board_use_whirlwind board_use_winky board_use_wizpig board_use_wolf board_use_wooten board_use_wsb board_use_x30evb board_use_x32-generic board_use_x86-agz board_use_x86-alex board_use_x86-alex32 board_use_x86-alex32_he board_use_x86-alex_he board_use_x86-alex_hubble board_use_x86-dogfood board_use_x86-generic board_use_x86-generic_embedded board_use_x86-mario board_use_x86-mario64 board_use_x86-zgb board_use_x86-zgb32 board_use_x86-zgb32_he board_use_x86-zgb_he board_use_zako board_use_zoombini cros_host unibuild cros_host cros_workon_tree_ profiling cros-debug fuzzer cros_host cros_workon_tree_ profiling cros-debug asan cros_host fuzzer test --disable_incremental
usage: platform2.py [-h] [--log-level {fatal,critical,error,warning,notice,info,debug}] [--log_format LOG_FORMAT] [--debug] [--nocolor]
                    [--action {configure,compile,deviterate}] [--board BOARD] [--cache_dir CACHE_DIR] [--disable_incremental] [--enable_tests] [--host]
                    [--libdir LIBDIR] [--use_flags USE_FLAGS] [-j JOBS] [--verbose]
                    [args [args ...]]
platform2.py: error: unrecognized arguments: --platform_subdir=power_manager --iuse_flags=-als buffet +cras cros_embedded +display_backlight -has_keyboard_backlight -keyboard_includes_side_buttons -legacy_power_button -mosys_eventlog +powerknobs systemd +touchpad_wakeup -touchscreen_wakeup unibuild board_use_acorn board_use_amd64-corei7 board_use_amd64-generic board_use_amd64-generic-cheets board_use_amd64-generic-goofy board_use_amd64-generic_embedded board_use_amd64-generic_mobbuild board_use_amd64-host board_use_aplrvp board_use_aries board_use_arkham board_use_arm-generic board_use_arm64-generic board_use_arm64-llvmpipe board_use_asuka board_use_atlas board_use_auron board_use_auron_paine board_use_auron_pearlvalley board_use_auron_yuna board_use_banjo board_use_banon board_use_bayleybay board_use_beaglebone board_use_beaglebone_servo board_use_beaglebone_vv1 board_use_beltino board_use_betty board_use_betty-arc64 board_use_betty-arcnext board_use_blackwall board_use_bob board_use_bobcat board_use_bolt board_use_bruteus board_use_buddy board_use_butterfly board_use_bwtm2 board_use_candy board_use_capri board_use_capri-zfpga board_use_caroline board_use_caroline-arc64 board_use_caroline-arcnext board_use_caroline-ndktranslation board_use_caroline-userdebug board_use_cardhu board_use_cave board_use_celes board_use_celes-cheets board_use_chell board_use_chell-cheets board_use_cheza board_use_cid board_use_clapper board_use_cnlrvp board_use_cobblepot board_use_coral board_use_cosmos board_use_cranky board_use_cyan board_use_cyan-cheets board_use_cyclone board_use_daisy board_use_daisy_embedded board_use_daisy_skate board_use_daisy_snow board_use_daisy_spring board_use_daisy_winter board_use_dalmore board_use_danger board_use_danger_embedded board_use_dragonegg board_use_duck board_use_edgar board_use_elm board_use_elm-cheets board_use_enguarde board_use_eve board_use_eve-arcnext board_use_eve-campfire board_use_eve-kvm board_use_eve-swap board_use_eve-userdebug board_use_expresso board_use_falco board_use_falco_gles board_use_falco_li board_use_fb1 board_use_fizz board_use_fizz-accelerator board_use_fizz-moblab board_use_foster board_use_gale board_use_gandof board_use_glados board_use_glados-cheets board_use_glimmer board_use_glimmer-cheets board_use_glkrvp board_use_gnawty board_use_gonzo board_use_gru board_use_grunt board_use_grunt-ndktranslation board_use_guado board_use_guado-accelerator board_use_guado-macrophage board_use_guado_moblab board_use_guado_labstation board_use_hana board_use_heli board_use_hsb board_use_iclrvp board_use_ironhide board_use_jadeite board_use_jecht board_use_kayle board_use_kblrvp board_use_kefka board_use_kevin board_use_kevin-arcnext board_use_kevin-tpm2 board_use_kidd board_use_kip board_use_klang board_use_kukui board_use_kunimitsu board_use_lakitu board_use_lakitu-gpu board_use_lakitu-st board_use_lakitu_mobbuild board_use_lakitu-nc board_use_lakitu_next board_use_lars board_use_laser board_use_lasilla-ground board_use_lasilla-sky board_use_lassen board_use_leon board_use_link board_use_loonix board_use_lulu board_use_lulu-cheets board_use_lumpy board_use_macchiato-ground board_use_mappy board_use_mappy_flashstation board_use_marble board_use_mccloud board_use_meowth board_use_metis board_use_minnowboard board_use_mipseb-n32-generic board_use_mipseb-n64-generic board_use_mipseb-o32-generic board_use_mipsel-n32-generic board_use_mipsel-n64-generic board_use_mipsel-o32-generic board_use_moblab-generic-vm board_use_monroe board_use_moose board_use_nami board_use_nautilus board_use_nefario board_use_newbie board_use_ninja board_use_nocturne board_use_novato board_use_novato-arc64 board_use_novato-arcnext board_use_nyan board_use_nyan_big board_use_nyan_blaze board_use_nyan_kitty board_use_oak board_use_oak-cheets board_use_octavius board_use_octopus board_use_orco board_use_panda board_use_panther board_use_panther_embedded board_use_panther_goofy board_use_panther_moblab board_use_parrot board_use_parrot32 board_use_parrot64 board_use_parrot_ivb board_use_pbody board_use_peach board_use_peach_kirby board_use_peach_pi board_use_peach_pit board_use_peppy board_use_plaso board_use_poppy board_use_ppcbe-32-generic board_use_ppcbe-64-generic board_use_ppcle-32-generic board_use_ppcle-64-generic board_use_puppy board_use_purin board_use_pyro board_use_quawks board_use_rainier board_use_rambi board_use_rammus board_use_raspberrypi board_use_reef board_use_relm board_use_reks board_use_reptile board_use_rikku board_use_rizer board_use_romer board_use_rotor board_use_rowan board_use_rush board_use_rush_ryu board_use_sama5d3 board_use_samus board_use_samus-cheets board_use_sand board_use_scarlet board_use_scarlet-arcnext board_use_sentry board_use_setzer board_use_shogun board_use_sklrvp board_use_slippy board_use_smaug board_use_smaug-cheets board_use_smaug-kasan board_use_snappy board_use_sonic board_use_soraka board_use_squawks board_use_stelvio board_use_storm board_use_storm_nand board_use_stout board_use_strago board_use_stumpy board_use_stumpy_moblab board_use_stumpy_pico board_use_sumo board_use_swanky board_use_tails board_use_tatl board_use_tael board_use_tegra3-generic board_use_terra board_use_tidus board_use_tricky board_use_ultima board_use_umaro board_use_veyron board_use_veyron_fievel board_use_veyron_gus board_use_veyron_jaq board_use_veyron_jerry board_use_veyron_mickey board_use_veyron_mighty board_use_veyron_minnie board_use_veyron_minnie-cheets board_use_veyron_nicky board_use_veyron_pinky board_use_veyron_remy board_use_veyron_rialto board_use_veyron_shark board_use_veyron_speedy board_use_veyron_speedy-cheets board_use_veyron_thea board_use_veyron_tiger board_use_whirlwind board_use_winky board_use_wizpig board_use_wolf board_use_wooten board_use_wsb board_use_x30evb board_use_x32-generic board_use_x86-agz board_use_x86-alex board_use_x86-alex32 board_use_x86-alex32_he board_use_x86-alex_he board_use_x86-alex_hubble board_use_x86-dogfood board_use_x86-generic board_use_x86-generic_embedded board_use_x86-mario board_use_x86-mario64 board_use_x86-zgb board_use_x86-zgb32 board_use_x86-zgb32_he board_use_x86-zgb_he board_use_zako board_use_zoombini cros_host unibuild cros_host cros_workon_tree_ profiling cros-debug fuzzer cros_host cros_workon_tree_ profiling cros-debug asan cros_host fuzzer test

$ emerge --info '=chromeos-base/power_manager-9999::chromiumos'
Portage 2.2.28 (python 2.7.10-final-0, !/usr/local/portage/chromiumos/profiles/default/linux/amd64/10.0/sdk, gcc-4.9.2, glibc-2.23-r18, 4.9.0-7-amd64 x86_64)
=================================================================
                         System Settings
=================================================================
System uname: Linux-4.9.0-7-amd64-x86_64-Intel-R-_Xeon-R-_CPU_E5-2690_v4_@_2.60GHz-with-glibc2.2.5
KiB Mem:   132014668 total,   3515920 free
KiB Swap:  134127612 total, 134127612 free
sh bash 4.3_p48-r1
ld GNU ld (binutils-2.27.0-r10-cce69c1b1bfc46de5e1cdd4923f87215c0edb884_cos_gg) 2.27.0.20170315
ccache version 3.2.4 [disabled]
app-shells/bash:          4.3_p48-r1::portage-stable
dev-java/java-config:     2.2.0-r3::portage-stable
dev-lang/python:          2.7.10-r3::chromiumos, 3.4.7-r1::chromiumos
dev-util/ccache:          3.2.4::portage-stable
dev-util/cmake:           3.7.2::portage-stable
dev-util/pkgconfig:       0.28-r2::portage-stable
sys-apps/baselayout:      2.2-r1::chromiumos
sys-apps/sandbox:         2.11-r2::portage-stable
sys-devel/autoconf:       2.69::portage-stable
sys-devel/automake:       1.10.3-r1::portage-stable, 1.11.6-r1::portage-stable, 1.14.1::portage-stable, 1.15.1-r2::portage-stable
sys-devel/binutils:       2.27.0-r10::chromiumos
sys-devel/gcc:            4.9.2-r194::chromiumos
sys-devel/gcc-config:     1.7.3::portage-stable
sys-devel/libtool:        2.4.6-r6::chromiumos
sys-devel/make:           4.2.1-r3::portage-stable
sys-kernel/linux-headers: 4.4-r22::chromiumos (virtual/os-headers)
sys-libs/glibc:           2.23-r18::chromiumos
Repositories:

portage-stable
    location: /mnt/host/source/src/third_party/portage-stable
    masters: eclass-overlay
    priority: -1000

crossdev
    location: /usr/local/portage/crossdev
    masters: portage-stable eclass-overlay chromiumos
    priority: 0

chromiumos
    location: /mnt/host/source/src/third_party/chromiumos-overlay
    masters: portage-stable eclass-overlay
    priority: 1

eclass-overlay
    location: /mnt/host/source/src/third_party/eclass-overlay
    priority: 2

chromeos
    location: /mnt/host/source/src/private-overlays/chromeos-overlay
    masters: portage-stable chromiumos eclass-overlay
    priority: 3

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA @CHROMEOS"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc/hosts /etc/locale.gen /etc/localtime /etc/make.conf"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -pipe"
DISTDIR="/var/lib/portage/distfiles"
EMERGE_DEFAULT_OPTS="--oneshot"
FCFLAGS=""
FEATURES="allow-missing-manifests assume-digests binpkg-logs buildpkg clean-logs config-protect-if-modified distlocks fixlafiles force-mirror network-sandbox news parallel-fetch parallel-install protect-owned sandbox sfperms unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS=""
GENTOO_MIRRORS="https://commondatastorage.googleapis.com/chromeos-localmirror https://commondatastorage.googleapis.com/chromeos-mirror/gentoo"
INSTALL_MASK="   /usr/lib*/*.la   /etc/init.d /etc/conf.d   /etc/logrotate.d "
LANG="en_US.UTF-8"
LDFLAGS="-Wl,-O2 -Wl,--as-needed -Wl,-O2 -Wl,--as-needed"
MAKEOPTS="-j56"
PKGDIR="/var/lib/portage/pkgs"
PORTAGE_BUNZIP2_COMMAND="pbunzip2 --ignore-trailing-garbage=1"
PORTAGE_BZIP2_COMMAND="pbzip2"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git"
PORTAGE_TMPDIR="/var/tmp"
USE="acl amd64 bzip2 cros_host crypt cxx dri fortran hardened iconv internal ipv6 mmx mmxext modules mudflap multilib ncurses nls nptl nptlonly openmp pic pie python readline sse sse2 ssl sysfs transparent_hugepage unicode vaapi xattr xorg zlib" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_4" QEMU_SOFTMMU_TARGETS="aarch64 arm i386 mips mips64 mips64el mipsel x86_64" QEMU_USER_TARGETS="aarch64 arm i386 mips mips64 mips64el mipsel x86_64" RUBY_TARGETS="ruby19 ruby18" TTY_CONSOLE="tty2" USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga neomagic nv r128 radeon savage sis tdfx trident vesa vga via vmware dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CPPFLAGS, CTARGET, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON

$ emerge -pqv '=chromeos-base/power_manager-9999::chromiumos'
[ebuild  N    ] chromeos-base/chromeos-config-tools-0.0.2-r1080  USE="cros_host -asan -cros-debug -fuzzer -json -profiling {-test}" 
[ebuild  N    ] media-libs/webrtc-apm-0.0.1-r2  USE="cros_host (-neon) -profiling" CPU_FLAGS_X86="sse2" 
[ebuild  N    ] media-libs/speex-1.2_rc1-r5  USE="sse (-neon) -ogg" 
[ebuild  N    ] media-libs/ladspa-sdk-1.13-r1 
[ebuild  N    ] media-plugins/alsa-plugins-1.1.6  USE="mix usb_stream -arcam_av -debug -ffmpeg -jack -libav -libsamplerate -oss -pulseaudio -speex" ABI_X86="(64) -32 (-x32)" 
[ebuild  N    ] media-libs/sbc-1.3  USE="-static-libs" ABI_X86="(64) -32 (-x32)" 
[ebuild  N    ] media-sound/adhd-0.0.1-r1548  USE="cras-apm cros_host -asan -profiling -selinux -systemd -unibuild" BOARD_USE="-acorn -amd64-corei7 -amd64-generic -amd64-generic-cheets -amd64-generic-goofy -amd64-generic_embedded -amd64-generic_mobbuild -amd64-host -aplrvp -aries -arkham -arm-generic -arm64-generic -arm64-llvmpipe -asuka -atlas -auron -auron_paine -auron_pearlvalley -auron_yuna -banjo -banon -bayleybay -beaglebone -beaglebone_servo -beaglebone_vv1 -beltino -betty -betty-arc64 -betty-arcnext -blackwall -bob -bobcat -bolt -bruteus -buddy -butterfly -bwtm2 -candy -capri -capri-zfpga -cardhu -caroline -caroline-arc64 -caroline-arcnext -caroline-ndktranslation -caroline-userdebug -cave -celes -celes-cheets -chell -chell-cheets -cheza -cid -clapper -cnlrvp -cobblepot -coral -cosmos -cranky -cyan -cyan-cheets -cyclone -daisy -daisy_embedded -daisy_skate -daisy_snow -daisy_spring -daisy_winter -dalmore -danger -danger_embedded -dragonegg -duck -edgar -elm -elm-cheets -enguarde -eve -eve-arcnext -eve-campfire -eve-kvm -eve-swap -eve-userdebug -expresso -falco -falco_gles -falco_li -fb1 -fizz -fizz-accelerator -fizz-moblab -foster -gale -gandof -glados -glados-cheets -glimmer -glimmer-cheets -glkrvp -gnawty -gonzo -gru -grunt -grunt-ndktranslation -guado -guado-accelerator -guado-macrophage -guado_labstation -guado_moblab -hana -heli -hsb -iclrvp -ironhide -jadeite -jecht -kayle -kblrvp -kefka -kevin -kevin-arcnext -kevin-tpm2 -kidd -kip -klang -kukui -kunimitsu -lakitu -lakitu-gpu -lakitu-nc -lakitu-st -lakitu_mobbuild -lakitu_next -lars -laser -lasilla-ground -lasilla-sky -lassen -leon -link -loonix -lulu -lulu-cheets -lumpy -macchiato-ground -mappy -mappy_flashstation -marble -mccloud -meowth -metis -minnowboard -mipseb-n32-generic -mipseb-n64-generic -mipseb-o32-generic -mipsel-n32-generic -mipsel-n64-generic -mipsel-o32-generic -moblab-generic-vm -monroe -moose -nami -nautilus -nefario -newbie -ninja -nocturne -novato -novato-arc64 -novato-arcnext -nyan -nyan_big -nyan_blaze -nyan_kitty -oak -oak-cheets -octavius -octopus -orco -panda -panther -panther_embedded -panther_goofy -panther_moblab -parrot -parrot32 -parrot64 -parrot_ivb -pbody -peach -peach_kirby -peach_pi -peach_pit -peppy -plaso -poppy -ppcbe-32-generic -ppcbe-64-generic -ppcle-32-generic -ppcle-64-generic -puppy -purin -pyro -quawks -rainier -rambi -rammus -raspberrypi -reef -reks -relm -reptile -rikku -rizer -romer -rotor -rowan -rush -rush_ryu -sama5d3 -samus -samus-cheets -sand -scarlet -scarlet-arcnext -sentry -setzer -shogun -sklrvp -slippy -smaug -smaug-cheets -smaug-kasan -snappy -sonic -soraka -squawks -stelvio -storm -storm_nand -stout -strago -stumpy -stumpy_moblab -stumpy_pico -sumo -swanky -tael -tails -tatl -tegra3-generic -terra -tidus -tricky -ultima -umaro -veyron -veyron_fievel -veyron_gus -veyron_jaq -veyron_jerry -veyron_mickey -veyron_mighty -veyron_minnie -veyron_minnie-cheets -veyron_nicky -veyron_pinky -veyron_remy -veyron_rialto -veyron_shark -veyron_speedy -veyron_speedy-cheets -veyron_thea -veyron_tiger -whirlwind -winky -wizpig -wolf -wooten -wsb -x30evb -x32-generic -x86-agz -x86-alex -x86-alex32 -x86-alex32_he -x86-alex_he -x86-alex_hubble -x86-dogfood -x86-generic -x86-generic_embedded -x86-mario -x86-mario64 -x86-zgb -x86-zgb32 -x86-zgb32_he -x86-zgb_he -zako -zoombini" 
[ebuild  N    ] chromeos-base/power_manager-9999  USE="cras cros_host display_backlight powerknobs touchpad_wakeup -als -asan -buffet -cros-debug -cros_embedded -fuzzer -has_keyboard_backlight -keyboard_includes_side_buttons -legacy_power_button -mosys_eventlog -profiling -systemd {-test} -touchscreen_wakeup -unibuild" BOARD_USE="-acorn -amd64-corei7 -amd64-generic -amd64-generic-cheets -amd64-generic-goofy -amd64-generic_embedded -amd64-generic_mobbuild -amd64-host -aplrvp -aries -arkham -arm-generic -arm64-generic -arm64-llvmpipe -asuka -atlas -auron -auron_paine -auron_pearlvalley -auron_yuna -banjo -banon -bayleybay -beaglebone -beaglebone_servo -beaglebone_vv1 -beltino -betty -betty-arc64 -betty-arcnext -blackwall -bob -bobcat -bolt -bruteus -buddy -butterfly -bwtm2 -candy -capri -capri-zfpga -cardhu -caroline -caroline-arc64 -caroline-arcnext -caroline-ndktranslation -caroline-userdebug -cave -celes -celes-cheets -chell -chell-cheets -cheza -cid -clapper -cnlrvp -cobblepot -coral -cosmos -cranky -cyan -cyan-cheets -cyclone -daisy -daisy_embedded -daisy_skate -daisy_snow -daisy_spring -daisy_winter -dalmore -danger -danger_embedded -dragonegg -duck -edgar -elm -elm-cheets -enguarde -eve -eve-arcnext -eve-campfire -eve-kvm -eve-swap -eve-userdebug -expresso -falco -falco_gles -falco_li -fb1 -fizz -fizz-accelerator -fizz-moblab -foster -gale -gandof -glados -glados-cheets -glimmer -glimmer-cheets -glkrvp -gnawty -gonzo -gru -grunt -grunt-ndktranslation -guado -guado-accelerator -guado-macrophage -guado_labstation -guado_moblab -hana -heli -hsb -iclrvp -ironhide -jadeite -jecht -kayle -kblrvp -kefka -kevin -kevin-arcnext -kevin-tpm2 -kidd -kip -klang -kukui -kunimitsu -lakitu -lakitu-gpu -lakitu-nc -lakitu-st -lakitu_mobbuild -lakitu_next -lars -laser -lasilla-ground -lasilla-sky -lassen -leon -link -loonix -lulu -lulu-cheets -lumpy -macchiato-ground -mappy -mappy_flashstation -marble -mccloud -meowth -metis -minnowboard -mipseb-n32-generic -mipseb-n64-generic -mipseb-o32-generic -mipsel-n32-generic -mipsel-n64-generic -mipsel-o32-generic -moblab-generic-vm -monroe -moose -nami -nautilus -nefario -newbie -ninja -nocturne -novato -novato-arc64 -novato-arcnext -nyan -nyan_big -nyan_blaze -nyan_kitty -oak -oak-cheets -octavius -octopus -orco -panda -panther -panther_embedded -panther_goofy -panther_moblab -parrot -parrot32 -parrot64 -parrot_ivb -pbody -peach -peach_kirby -peach_pi -peach_pit -peppy -plaso -poppy -ppcbe-32-generic -ppcbe-64-generic -ppcle-32-generic -ppcle-64-generic -puppy -purin -pyro -quawks -rainier -rambi -rammus -raspberrypi -reef -reks -relm -reptile -rikku -rizer -romer -rotor -rowan -rush -rush_ryu -sama5d3 -samus -samus-cheets -sand -scarlet -scarlet-arcnext -sentry -setzer -shogun -sklrvp -slippy -smaug -smaug-cheets -smaug-kasan -snappy -sonic -soraka -squawks -stelvio -storm -storm_nand -stout -strago -stumpy -stumpy_moblab -stumpy_pico -sumo -swanky -tael -tails -tatl -tegra3-generic -terra -tidus -tricky -ultima -umaro -veyron -veyron_fievel -veyron_gus -veyron_jaq -veyron_jerry -veyron_mickey -veyron_mighty -veyron_minnie -veyron_minnie-cheets -veyron_nicky -veyron_pinky -veyron_remy -veyron_rialto -veyron_shark -veyron_speedy -veyron_speedy-cheets -veyron_thea -veyron_tiger -whirlwind -winky -wizpig -wolf -wooten -wsb -x30evb -x32-generic -x86-agz -x86-alex -x86-alex32 -x86-alex32_he -x86-alex_he -x86-alex_hubble -x86-dogfood -x86-generic -x86-generic_embedded -x86-mario -x86-mario64 -x86-zgb -x86-zgb32 -x86-zgb32_he -x86-zgb_he -zako -zoombini" 

The following keyword changes are necessary to proceed:
 (see "package.accept_keywords" in the portage(5) man page for more details)
# required by =chromeos-base/power_manager-9999::chromiumos (argument)
=chromeos-base/power_manager-9999 **