$ ROOT=/remote/mouse/ emerge -pu glibc

These are the packages that I would merge, in order:

Calculating dependencies  ...done!
working on ['ebuild', '/', 'sys-libs/glibc-2.3.1-r4', 'merge'] : pkgsplit( sys-libs/glibc-2.3.1-r4 ) =  ['sys-libs/glibc', '2.3.1', 'r4']
[ebuild    U ] sys-libs/glibc-2.3.1-r4 [2.3.1-r2] 
working on ['ebuild', '/remote/mouse/', 'sys-apps/gawk-3.1.1-r2', 'merge'] : pkgsplit( sys-apps/gawk-3.1.1-r2 ) =  ['sys-apps/gawk', '3.1.1', 'r2']
[ebuild    U ] sys-apps/gawk-3.1.1-r2 [3.1.1-r1] to /remote/mouse/ 
working on ['ebuild', '/remote/mouse/', 'sys-apps/baselayout-1.8.5.9', 'merge'] : pkgsplit( sys-apps/baselayout-1.8.5.9 ) =  ['sys-apps/baselayout', '1.8.5.9', 'r0']
[ebuild    U ] sys-apps/baselayout-1.8.5.9 [1.8.5.8] to /remote/mouse/ 
working on ['ebuild', '/remote/mouse/', 'sys-libs/glibc-2.3.1-r4', 'merge'] : pkgsplit( sys-libs/glibc-2.3.1-r4 ) =  ['sys-libs/glibc', '2.3.1', '-r4']
Traceback (most recent call last):
  File "/usr/bin/emerge", line 1924, in ?
    mydepgraph.display(mydepgraph.altlist())
  File "/usr/bin/emerge", line 961, in display
    if (myoldslot==mynewslot) and portage.pkgcmp(portage.pkgsplit(x[2]), portage.pkgsplit(myoldbest)) < 0:
  File "/usr/lib/python2.2/site-packages/portage.py", line 2153, in pkgcmp
    r1=string.atoi(pkg1[2][1:])
  File "/usr/lib/python2.2/string.py", line 220, in atoi
    return _int(s, base)
ValueError: invalid literal for int(): r4
*** terminating.

$ emerge info

Portage 2.0.48-r1 (default-x86-1.4, gcc-3.2.2, glibc-2.3.1-r2)
=================================================================
System uname: 2.4.20-x5 i686 AMD Athlon(TM) XP 1800+
GENTOO_MIRRORS=" ftp://ftp.gg3.net/pub/linux/gentoo"
CONFIG_PROTECT="/etc /var/qmail/control /usr/share/config /usr/kde/2/share/config /usr/kde/3/share/config /usr/X11R6/lib/X11/xkb"
CONFIG_PROTECT_MASK="/etc/gconf /etc/env.d"
PORTDIR="/var/portage"
DISTDIR="/var/portage-distfiles"
PKGDIR="/var/portage-lo/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR_OVERLAY="/var/portage-mine"
USE="jpeg png gdbm aalib -acl -afs -alsa -apache2 apm -arts -atlas avi berkdb -bonobo canna -cdr cjk crypt -cups dga directfb -doc -dvd -encode esd -evo -ev6 fbcon -flash -freewnn -gb -gd -ggz -ggi -gif -gnome -gphoto2 gpm -gps -gtk2 -gtk -gtkhtml -guile -icc -icc-pgo imap imlib -innodb -ipv6 -java -jikes -junit -kde -kerberos -lcms -ldap -leim -libg++ -libdga libwww -matrox maildir mbox -mikmod mmx -motif -mozilla -mpeg mule -mysql -nas ncurses nls -nocardbus -oav -oci8 -odbc -oggvorbis -opengl oss pam pcmcia -pda -pdflib perl pic -plotutils pnp -postgres python -qt -qtmt -quicktime readline -ruby -samba sasl -scanner sdl slang -slp -snmp -socks5 -spell -sse ssl -static svga -tcltk tcpd -tetex truetype trusted -voodoo3 -wavelan -X -xface xml xml2 -xmms xv zlib x86 -3dnow moznoirc moznomail moznocompose"
COMPILER="gcc3"
CHOST="i586-pc-linux-gnu"
CFLAGS="-march=pentium-mmx -mcpu=pentium-mmx -Os -pipe"
CXXFLAGS="-march=pentium-mmx -mcpu=pentium-mmx -Os -pipe"
ACCEPT_KEYWORDS="x86"
MAKEOPTS="-j2"
AUTOCLEAN="yes"
SYNC="rsync://rsync.gg3.net/gentoo-portage"
FEATURES="sandbox ccache"

$ diff -u /usr/bin/emerge.{orig,chutz}

--- /usr/bin/emerge.orig	2003-06-13 12:08:06.000000000 +0900
+++ /usr/bin/emerge.chutz	2003-06-13 12:08:51.000000000 +0900
@@ -956,6 +956,7 @@
 					except:
 						myoldslot=None
 					mynewslot=portage.portdb.aux_get(x[2],["SLOT"])[0]
+					print "working on", x,": pkgsplit(",x[2],") = ", portage.pkgsplit(x[2]);
 
 					if (myoldslot==mynewslot) and portage.pkgcmp(portage.pkgsplit(x[2]), portage.pkgsplit(myoldbest)) < 0:
 						addl="   "+turquoise("U")+blue("D")