as in summary. /usr/bin/ruby18 does exist, of course. Reproducible: Always Steps to Reproduce: emerge --info Portage 2.2_rc61 (default/linux/amd64/10.0/desktop, gcc-4.4.2, glibc-2.11-r1, 2.6.31-gentoo-r6 x86_64) ================================================================= System uname: Linux-2.6.31-gentoo-r6-x86_64-Intel-R-_Core-TM-2_Duo_CPU_T9300_@_2.50GHz-with-gentoo-2.0.1 Timestamp of tree: Fri, 25 Dec 2009 18:45:01 +0000 ccache version 2.4 [enabled] app-shells/bash: 4.0_p35 dev-java/java-config: 2.1.10 dev-lang/python: 2.6.4, 3.1.1-r1 dev-python/pycrypto: 2.0.1-r8 dev-util/ccache: 2.4-r8 dev-util/cmake: 2.8.0 sys-apps/baselayout: 2.0.1 sys-apps/openrc: 0.6.0 sys-apps/sandbox: 2.2 sys-devel/autoconf: 2.13, 2.64 sys-devel/automake: 1.9.6-r2, 1.10.3, 1.11.1 sys-devel/binutils: 2.20 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6b virtual/os-headers: 2.6.30-r1 ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe -fomit-frame-pointer" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/X11/xkb /usr/share/config /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=native -O2 -pipe -fomit-frame-pointer" DISTDIR="/var/portage/distfiles" FEATURES="assume-digests ccache distlocks fixpackages news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch" GENTOO_MIRRORS="http://distro.ibiblio.org/pub/linux/distributions/gentoo/" LC_ALL="en_US.UTF-8" LDFLAGS="-Wl,-O1" LINGUAS="en" MAKEOPTS="-j3 -l3" 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/portage/local/layman/desktop-effects /usr/portage/local/layman/java-overlay /usr/portage/local/layman/sunrise /usr/portage/local/layman/x11 /usr/portage/local/layman/mozilla /usr/portage/local/layman/kde-testing /usr/local/portage" SYNC="rsync://rsync.namerica.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 bash-completion berkdb branding bzip2 cairo cdr cli consolekit cracklib crypt cups cxx dbus dri dts dvd dvdr encode fam flac fortran gdbm gif glitz gnutls gpm gstreamer gtk hal iconv ieee1394 ipw4965 jpeg kde4 kpathsea ldap libnotify mad mikmod mmx mng modules mp3 mp4 mpeg mudflap multilib ncurses nls nognome nptl nptlonly ogg opengl openmp pam pcre pdf perl png ppds pppd python qt3support qt4 quicktime readline realmedia reflection samba sdl semantic-desktop session spell spl sse sse2 ssl ssse3 startup-notification svg sysfs tcpd tetex theora thunar tiff truetype type1 unicode usb vorbis wmp x264 xcb xcomposite xml xorg xulrunner xv xvid zlib" ALSA_CARDS="hda-intel" 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 synaptics evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="intel vesa" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
I assume you mean dev-ruby/fastthread-1.0.7-r1 ? This should now be fixed. In the mean time you can emerge dev-ruby/rake manually first. Thanks for reporting.