When I tried to emerge PyQt-3.15.1 I got this error: >>> Emerging (2 of 3) dev-python/PyQt-3.15.1 to / >>> checksums files ;-) PyQt-3.14.1-r1.ebuild >>> checksums files ;-) PyQt-3.13-r2.ebuild >>> checksums files ;-) PyQt-3.16.ebuild >>> checksums files ;-) PyQt-3.15.1.ebuild >>> checksums files ;-) files/digest-PyQt-3.16 >>> checksums files ;-) files/PyQt-3.13-kde34.diff >>> checksums files ;-) files/digest-PyQt-3.14.1-r1 >>> checksums files ;-) files/digest-PyQt-3.15.1 >>> checksums files ;-) files/digest-PyQt-3.13-r2 >>> checksums files ;-) files/PyQt-3.14.1-examples.diff >>> checksums src_uri ;-) PyQt-x11-gpl-3.15.1.tar.gz >>> Unpacking source... >>> Unpacking PyQt-x11-gpl-3.15.1.tar.gz to /var/tmp/portage/PyQt-3.15.1/work >>> Source unpacked. >>> Compiling source in /var/tmp/portage/PyQt-3.15.1/work/PyQt-x11-gpl-3.15.1 ... Traceback (most recent call last): File "configure.py", line 56, in ? if sipcfg.qt_version == 0: File "/usr/lib64/python2.4/site-packages/sipconfig.py", line 178, in __getattr__ raise AttributeError, "\"%s\" is not a valid configuration value or user option" % name AttributeError: "qt_version" is not a valid configuration value or user option make: *** No targets specified and no makefile found. Stop. !!! ERROR: dev-python/PyQt-3.15.1 failed. Call stack: ebuild.sh, line 1532: Called dyn_compile ebuild.sh, line 929: Called src_compile PyQt-3.15.1.ebuild, line 45: Called die !!! emake failed !!! If you need support, post the topmost build error, and the call stack if relevant. emerge --info Portage 2.1_pre7-r5 (default-linux/amd64/2005.0, gcc-3.4.6, glibc-2.4-r1, 2.6.16-gentoo x86_64) ================================================================= System uname: 2.6.16-gentoo x86_64 AMD Athlon(tm) 64 Processor 3000+ Gentoo Base System version 1.12.0_pre17 distcc 2.18.3 x86_64-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] ccache version 2.4 [enabled] dev-lang/python: 2.4.2-r1 sys-apps/sandbox: 1.2.17 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2 sys-devel/binutils: 2.16.1-r2 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r3 ACCEPT_KEYWORDS="amd64 ~amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=athlon64 -pipe -O2 -fomit-frame-pointer -frename-registers" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/kde/3/share/config /usr/lib64/mozilla/defaults/pref /usr/share/X11/xkb /usr/share/config /usr/share/cursors/xorg-x11/default /var/qmail/control" CONFIG_PROTECT_MASK="/etc/eselect/compiler /etc/gconf /etc/revdep-rebuild /etc/terminfo /etc/texmf/web2c /etc/env.d" CXXFLAGS="-march=athlon64 -pipe -O2 -fomit-frame-pointer -frename-registers" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig ccache distlocks metadata-transfer sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/linux/distributions/gentoo" LANG="sl_SI" LINGUAS="en sl" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/root/portageoverlay" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 apache2 arts audiofile avi berkdb bitmap-fonts bzip2 cairo cdr crypt cups curl dbus dri dts dvd dvdr eds emboss encode esd exif expat fam fbcon ffmpeg flac foomaticdb fortran freetype ftp gif gmp gnome gphoto2 gpm gstreamer gtk gtk2 hal idn imagemagick imlib ipv6 isdnlog jabber jpeg kde lcms lm_sensors lzw lzw-tiff mad matroska mng mozilla mp3 mpeg mysql ncurses nls nptl nptlonly nvidia ogg opengl oss pam pdf pdflib perl php png posix ppds pppd python qt quicktime readline samba scanner sdl slp speex spell sqlite ssl stream subversion svg tcpd tetex theora tiff truetype truetype-fonts type1-fonts unicode usb vhosts videos vorbis xcomposite xine xml xml2 xmms xosd xpm xprint xscreensaver xv xvid zlib elibc_glibc input_devices_keyboard input_devices_mouse kernel_linux linguas_en linguas_sl userland_GNU video_cards_nvidia video_cards_nv video_cards_vesa" Unset: ASFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LDFLAGS
what version of sip do you have installed?
Presumably invalid sip/PyQt combination. You may test PyQt-3.16.