When I try to emerge dev-php/PEAR-Log-1.8.3 with FEATURES="collision-protect", there is a collision and emerge exits with an error. Reproducible: Always Steps to Reproduce: 1. set FEATURES="collision-protect" in make.conf 2. emerge -av PEAR-Log Actual Results: * checking 40 files for package collisions existing file /usr/lib/php/.filemap is not owned by this package existing file /usr/lib/php/.lock is not owned by this package * spend 0.00417685508728 seconds checking for file collisions * This package is blocked because it wants to overwrite * files belonging to other packages (see messages above). * If you have no clue what this is all about report it * as a bug for this package on http://bugs.gentoo.org package dev-php/PEAR-Log-1.8.3 NOT merged Expected Results: Successful emerge. # emerge info Portage 2.0.51-r3 (default-x86-2004.2, gcc-3.3.4, glibc-2.3.4.20040808-r1, 2.6.9-gentoo-r1 i686) ================================================================= System uname: 2.6.9-gentoo-r1 i686 AMD Athlon(tm) XP 2200+ Gentoo Base System version 1.6.6 Autoconf: sys-devel/autoconf-2.59-r5 Automake: sys-devel/automake-1.8.5-r1 Binutils: sys-devel/binutils-2.14.90.0.8-r1 Headers: sys-kernel/linux26-headers-2.6.8.1 Libtools: sys-devel/libtool-1.5.2-r5 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-O3 -march=athlon-xp -pipe -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" COMPILER="" CONFIG_PROTECT="/etc /opt/glftpd/etc /usr/kde/2/share/config /usr/kde/3/share/config /usr/share/config /var/bind /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-O3 -march=athlon-xp -pipe -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs ccache collision-protect distlocks makecheck sandbox" GENTOO_MIRRORS="http://gentoo.osuosl.org http://distro.ibiblio.org/pub/Linux/distributions/gentoo" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="3dnow acpi apache2 apm arts avi berkdb bitmap-fonts crypt cups encode f77 fbcon firebird foomaticdb fortran gd gd-external gdbm gif gpm gtk2 imap imlib innodb java jpeg libg++ libwww mad maildir mikmod mmx motif mpeg mysql ncurses nls nptl oggvorbis opengl oss pam pdflib perl png pnp postgres python quicktime readline sasl sdl slang snmp socks5 spell sse ssl svga tcpd truetype unicode x86 xml xml2 xmms xv zlib"
Due to the "inner workings" of the PEAR Installer and the PEAR eclass this is expected behaviour that cannot (and need not) be changed.