app-misc/colordiff consists only of a perl script. It runs fine on hppa-hpux, so I think you should add the ~hppa-hpux keyword to the colordiff ebuild. Thanks Reproducible: Always bruno@snsv00v1 ~ $ emerge --info Portage 2.2.00.15171-prefix (prefix/hpux/B.11.11/hppa2.0, gcc-4.2.4, unavailable, B.11.11 9000/800) ================================================================= System uname: HP-UX-B.11.11-9000-800-32bit Timestamp of tree: Fri, 08 Jan 2010 08:11:11 +0000 app-shells/bash: 4.0_p35 dev-lang/python: 2.6.4 sys-devel/autoconf: 2.63-r01.1 sys-devel/automake: 1.10.2-r00.1, 1.11.1 sys-devel/binutils: 2.19.1-r01.1 sys-devel/gcc-config: 1.4.1-r00.2 sys-devel/libtool: 2.2.6b ACCEPT_KEYWORDS="~hppa-hpux" ACCEPT_LICENSE="* -@EULA" CBUILD="hppa2.0w-hp-hpux11.11" CFLAGS="-O2 -pipe -march=2.0 -mschedule=8000 -fomit-frame-pointer" CHOST="hppa2.0w-hp-hpux11.11" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/revdep-rebuild /etc/terminfo" CXXFLAGS="-O2 -pipe -march=2.0 -mschedule=8000 -fomit-frame-pointer" DISTDIR="/usr/local/gentoo-prefix/usr/portage/distfiles" FEATURES="assume-digests collision-protect distlocks fixpackages news nostrip parallel-fetch preserve-libs protect-owned sfperms strict unmerge-logs unmerge-orphans userfetch" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" LDFLAGS="-L/usr/local/gentoo-prefix/usr/lib -R/usr/local/gentoo-prefix/usr/lib" MAKEOPTS="-j3" PKGDIR="/usr/local/gentoo-prefix/usr/portage/packages" PORTAGE_CONFIGROOT="/usr/local/gentoo-prefix/" 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="/usr/local/gentoo-prefix/var/tmp" PORTDIR="/usr/local/gentoo-prefix/usr/portage" SYNC="rsync://rsync.prefix.freens.org/gentoo-portage-prefix" USE="cracklib cxx hppa-hpux modules ncurses nls prefix readline ssl unicode zlib" 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="HPUX" INPUT_DEVICES="keyboard mouse" KERNEL="HPUX" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" RUBY_TARGETS="ruby18" USERLAND="GNU" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
done, thanks!