The genkernel ebuild currently has USE flags for cryptsetup, firmware, ibm, and selinux. However if the "genkernel --xconfig" is being run, it also depends on qt5, and if "genkernel --gconfig" is being run it also depends on gtk3. These dependencies should probably be captured in the ebuild USE flags, at least as options. emerge --info Portage 2.3.40 (python 2.7.14-final-0, default/linux/amd64/17.0/desktop, gcc-7.3.0, glibc-2.26-r7, 4.17.2-gentoo x86_64) ================================================================= System uname: Linux-4.17.2-gentoo-x86_64-Intel-R-_Core-TM-_i5-4200M_CPU_@_2.50GHz-with-gentoo-2.4.1 KiB Mem: 7841196 total, 4553584 free KiB Swap: 148372 total, 148372 free Head commit of repository gentoo: fc759cad2fcd61a84051bb15d1a15596eea4f9b4 sh dash 0.5.9.1-r3 ld GNU ld (Gentoo 2.30 p2) 2.30.0 app-shells/bash: 4.4_p12::gentoo dev-lang/perl: 5.24.3-r1::gentoo dev-lang/python: 2.7.14-r1::gentoo, 3.5.5::gentoo dev-util/cmake: 3.9.6::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.4.1-r2::gentoo sys-apps/openrc: 0.34.11::gentoo sys-apps/sandbox: 2.13::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.15.1-r2::gentoo sys-devel/binutils: 2.30-r2::gentoo sys-devel/gcc: 7.3.0-r3::gentoo sys-devel/gcc-config: 1.8-r1::gentoo sys-devel/libtool: 2.4.6-r3::gentoo sys-devel/make: 4.2.1::gentoo sys-kernel/linux-headers: 4.13::gentoo (virtual/os-headers) sys-libs/glibc: 2.26-r7::gentoo Repositories: gentoo location: /usr/portage sync-type: git sync-uri: git://marge.edgehp.net/usr/portage priority: -1000 x-portage location: /usr/local/portage masters: gentoo priority: 0 pentoo location: /var/lib/layman/pentoo sync-type: laymansync sync-uri: git://github.com/pentoo/pentoo-overlay.git masters: gentoo priority: 50 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA Q3AEULA AdobeFlash-10.3 AdobeFlash-11.x skype-4.0.0.7-copyright DOOM3" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -march=native -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/easy-rsa /usr/share/gnupg/qualified.txt" 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 -march=native -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--with-bdeps y" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.UTF8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en es en_US" MAKEOPTS="-j3" PKGDIR="/var/tmp/binpkgs" 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="3dnow 3dnowext X a52 aac acl acpi alsa amd64 audio auto-hinter berkdb bmp branding bzip2 cairo caps cdda cddb cdio cdr cleartype cli corefonts cpufreq crypt cryptsetup css cups curl cxx device-mapper dirac dri dts dvb dvd dvdnav dvdr egl emboss encode exif expat faac faad fam ffmpeg flac fontconfig fortran fuse gdbm gif gimp glamor gles2 glib gmp gphoto2 gpm gstreamer gtk guile hddtemp ico iconv imagemagick initramfs ipc jpeg jpeg2k kmod lcms libnotify libsamplerate libtirpc lm_sensors lua luajit mad mmx mng modules motif mp3 mp4 mpeg mplayer multilib musicbrainz mysql nas ncurses nls np nptl nsplugin nuv ogg opengl openmp openrc osdmenu pam pango pcf pcre pdf perl png ppds python qt5 quicktime raw readline real sasl schroedinger sdl seccomp sndfile spell sqlite sse sse2 ssl startup-notification subversion svg tcl tcpd theora threads tiff tk truetype type1 udev unicode usb v4l v4l2 vdpau video vorbis wxwidgets x264 xattr xcb xine xml xrandr xv xvid zlib" ABI_X86="32 64" ALSA_CARDS="hda-intel" 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="karbon plan sheets stage words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 fma3 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" ENLIGHTENMENT_MODULES="backlight clock conf-applications conf-dialogs conf-display conf-edgebindings conf-interaction conf-keybindings conf-menus conf-paths conf-performance conf-randr conf-shelves conf-theme conf-window-manipulation conf-window-remembers cpufreq dropshadow everything fileman fileman-opinfo gadman ibar ibox mixer msgbus notification pager quickaccess start syscon systray tasks temperature winlist wizard comp" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LIRC_DEVICES="devinput" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6 php7-0" POSTGRES_TARGETS="postgres9_5 postgres10" PYTHON_SINGLE_TARGET="python3_5" PYTHON_TARGETS="python2_7 python3_5" RUBY_TARGETS="ruby23" SANE_BACKENDS="net" USERLAND="GNU" VIDEO_CARDS="intel i965" XFCE_PLUGINS="menu" 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: CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
I am not sure what to do here. I tend to reject that request: xconfig would need virtual/pkgconfig dev-qt/qtcore dev-qt/qtgui dev-qt/qtwidgets and gconfig would need virtual/pkgconfig x11-libs/gtk+:2 dev-libs/glib gnome-base/libglade The difference between USE=cryptsetup (which is now gone BTW) is that it's not enough to install those packages. I.e. you still need working display server or you will get errors like > (gconf:84887): Gtk-WARNING **: 15:41:29.053: cannot open display: My point is: You will never use this on a server for example. And on a system with some kind of graphical interface, you will probably have these packages already installed.
