dev-libs/boost-1.37.0 is pulled by kde-base/libkleo, though it even doesn't have such dependency: emerge -uDvpt @world These are the packages that would be merged, in reverse order: Calculating dependencies... done! [nomerge ] kde-base/kde-meta-4.2.1 USE="mysql nls -accessibility" [nomerge ] kde-base/kdepim-meta-4.2.1 [nomerge ] kde-base/libkleo-4.2.1-r1 USE="-debug -kdeprefix" [ebuild NS ] dev-libs/boost-1.37.0 [1.37.0-r1] USE="-debug -doc -expat -icu -mpi -tools" 0 kB [ebuild NS ] dev-util/boost-build-1.37.0 [1.37.0-r1] USE="python -examples" 0 kB [ebuild N ] app-admin/eselect-boost-0.2 0 kB Total: 3 packages (1 new, 2 in new slots), Size of downloads: 0 kB Reproducible: Always Steps to Reproduce: emerge --info Portage 2.2_rc28 (default/linux/amd64/2008.0, gcc-4.3.3, glibc-2.9_p20081201-r2, 2.6.29-gentoo x86_64) ================================================================= System uname: Linux-2.6.29-gentoo-x86_64-AMD_Athlon-tm-_64_X2_Dual_Core_Processor_3600+-with-glibc2.2.5 Timestamp of tree: Sat, 04 Apr 2009 07:20:01 +0000 distcc 3.1 x86_64-pc-linux-gnu [disabled] ccache version 2.4 [enabled] app-shells/bash: 4.0_p10-r1 dev-java/java-config: 1.3.7-r1, 2.1.7 dev-lang/python: 2.5.4-r2 dev-util/ccache: 2.4-r8 dev-util/cmake: 2.6.3 sys-apps/baselayout: 2.0.0 sys-apps/openrc: 0.4.3-r1 sys-apps/sandbox: 1.7 sys-devel/autoconf: 2.13, 2.63 sys-devel/automake: 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.19.1-r1 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6a virtual/os-headers: 2.6.28-r1 ACCEPT_KEYWORDS="amd64 ~amd64" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=athlon64 -fomit-frame-pointer -msse3" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/config /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/eselect/postgresql /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/splash /etc/terminfo /etc/udev/rules.d" CXXFLAGS="-O2 -pipe -march=athlon64 -fomit-frame-pointer -msse3" DISTDIR="/usr/portage/distfiles" FEATURES="ccache distlocks fixpackages parallel-fetch preserve-libs protect-owned sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="http://gentoo.tiscali.nl/ http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/ http://mirror.qubenet.net/mirror/gentoo/ http://gentoo.inode.at/" LANG="ru_RU.UTF-8" LC_ALL="" LDFLAGS="-Wl,-O1" LINGUAS="en" MAKEOPTS="-j4" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage/layman/desktop-effects /usr/local/portage/layman/java-overlay /usr/local/portage/layman/sunrise /usr/local/portage/layman/mpd /usr/local/overlays/local" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="3dnow 3dnowext X a52 aac acl acpi alsa amd64 apache2 audiofile bash-completion berkdb bluetooth bzip2 cairo cdda cdr cleartype cli cracklib crypt cups dbus device-mapper djvu dri dts dvd dvdr dvdread encode ffmpeg flac fortran ftp gdbm gif glitz gnome gphoto2 gpm gtk hal hddtemp iconv ipv6 isdnlog java jpeg jpeg2k libnotify lirc lm_sensors mad matroska midi mmx mmxext mp2 mp3 mpeg mplayer mudflap multilib musepack musicbrainz mysql nautilus ncurses nls nptl nptlonly nsplugin ntfs ogg opengl openmp pam pcre pdf perl php png pppd python qt4 quicktime raw readline reflection reiserfs samba sdl session slang smp spl srt sse sse2 ssl ssse3 svg sysfs tcpd threads tiff truetype unicode usb userlocales v4l v4l2 vorbis wavpack wxwindows x264 xorg xulrunner xv xvid xvmc zlib" ALSA_CARDS="emu10k1" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="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 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" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en" LIRC_DEVICES="devinput" USERLAND="GNU" VIDEO_CARDS="nv nvidia" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
libkleo does have a dependency on dev-libs/boost, it's pulled in through the kde4-meta eclass. Which overlay did boost-1.37.0-r1 come from? It's not in the main tree. Perhaps you dropped the overlay, or boost got removed from it, causing the confusion.
my mistake really, 1.37.0-r1 was emerged from a dropped overlay
