g-cpan refuses to install LWP::UserAgent claiming that its part of perl core, yet it is not. # g-cpan -g LWP::UserAgent * LWP::UserAgent is part of the core perl install # perl -e 'use LWP::UserAgent;' Can't locate LWP/UserAgent.pm in @INC (@INC contains: /etc/perl /usr/lib64/perl5/site_perl/5.12.4/x86_64-linux /usr/lib64/perl5/site_perl/5.12.4 /usr/lib64/perl5/vendor_perl/5.12.4/x86_64-linux /usr/lib64/perl5/vendor_perl/5.12.4 /usr/lib64/perl5/site_perl /usr/lib64/perl5/vendor_perl/5.12.3/x86_64-linux /usr/lib64/perl5/vendor_perl/5.12.3 /usr/lib64/perl5/vendor_perl/5.12.2/x86_64-linux /usr/lib64/perl5/vendor_perl/5.12.2 /usr/lib64/perl5/vendor_perl /usr/lib64/perl5/5.12.4/x86_64-linux /usr/lib64/perl5/5.12.4 /usr/local/lib/site_perl .) at -e line 1. BEGIN failed--compilation aborted at -e line 1. # qlist perl | grep LWP/UserAgent /usr/lib64/perl5/5.12.4/CPAN/LWP/UserAgent.pm # grep '^package' /usr/lib64/perl5/5.12.4/CPAN/LWP/UserAgent.pm package CPAN::LWP::UserAgent; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ # emerge --info Portage 2.1.10.11 (default/linux/amd64/10.0, gcc-4.4.5, glibc-2.12.2-r0, 3.1.1-gentoo x86_64) ================================================================= System uname: Linux-3.1.1-gentoo-x86_64-Intel-R-_Core-TM-_i7_CPU_Q_740_@_1.73GHz-with-gentoo-2.0.3 Timestamp of tree: Thu, 19 Jan 2012 04:30:01 +0000 app-shells/bash: 4.1_p9 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.7.2-r3, 3.1.4-r3 dev-util/cmake: 2.8.4-r1 dev-util/pkgconfig: 0.26 sys-apps/baselayout: 2.0.3 sys-apps/openrc: 0.8.3-r1 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.68 sys-devel/automake: 1.9.6-r3, 1.10.3, 1.11.1 sys-devel/binutils: 2.21.1-r1 sys-devel/gcc: 4.4.5, 4.5.3-r1 sys-devel/gcc-config: 1.4.1-r1 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r1 sys-kernel/linux-headers: 2.6.39 (virtual/os-headers) sys-libs/glibc: 2.12.2 Repositories: gentoo badvpn ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA AdobeFlash-10.1 dlj-1.1 googleearth Oracle-BCLA-JavaSE" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=native -fomit-frame-pointer" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc" 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" CXXFLAGS="-O2 -pipe -march=native -fomit-frame-pointer" DISTDIR="/tmp/distfiles" FEATURES="assume-digests binpkg-logs ccache distlocks ebuild-locks fixlafiles fixpackages news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="" GENTOO_MIRRORS="http://mirrors.tds.net/gentoo http://gentoo.mirrors.easynews.com/linux/gentoo http://ftp.gtlib.cc.gatech.edu/pub/gentoo" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en en_US" MAKEOPTS="-j10" 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/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X aac acl acpi alsa amd64 berkdb bluetooth bzip2 cdda cddb cli cracklib crypt cups cxx dbus dhcpcd dri ffmpeg flac fontconfig fortran gdbm gpm gtk iconv ipv6 jpeg lame mmx modules mp3 mudflap multilib ncurses nls nptl nptlonly ogg opengl openldap openmp pam pcre png pppd pulseaudio python readline scrobbler sdl session sse sse2 ssl sysfs syslog tcpd threads udev unicode vorbis x264 xinerama xorg xvid zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" 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 cgi cgid 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" CALLIGRA_FEATURES="kexi words flow plan stage tables krita karbon braindump" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en en_US" LIRC_DEVICES="devinput" PHP_TARGETS="php5-3" QEMU_SOFTMMU_TARGETS="x86_64" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nvidia nouveau" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
I found the LWP::UserAgent module is part of libwww-perl. I think this this might be what g-cpan is referring to in the message it gives. Unfortunately the message "... is part of the core perl install" is very misleading because "perl core" is the name for all the modules that are bundled with perl (http://perldoc.perl.org/index-modules-A.html). This is specifically what I was misunderstanding. I think either g-cpan needs to use a more appropriate message, perhaps "... is in portage", or the message should specify the package name containing the module.
