$ equery f app-portage/g-cpan | grep /var/tmp /var/tmp /var/tmp/g-cpan /var/tmp/g-cpan/.keep_app-portage_g-cpan-0 /var/tmp is for temporary files and programs should not rely on files there persisting indefinitely. For example, I exclude the contents of /var/tmp from my backups, so if I have to restore from a backup the contents may disappear. If g-cpan requires this directory to exist before it is run, it should not be in /var/tmp. If it does not, it should create the directotry itself if necessary and not install it through the package manager (as portage does with /var/tmp/portage). I suspect this will cause /var/tmp to be deleted if there happens to be nothing else in it and g-cpan is uninstalled, which could really mess up your system. Luckily, with the default configuration portage leaves some directories there, so this will probably be a rare problem in practice. $ emerge --info app-portage/g-cpan Portage 2.2.0_alpha173 (default/linux/amd64/13.0, gcc-4.7.2, glibc-2.17, 3.2.21-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-3.2.21-gentoo-x86_64-Intel-R-_Core-TM-2_CPU_T5500_@_1.66GHz-with-gentoo-2.2 KiB Mem: 2051124 total, 1086728 free KiB Swap: 2048252 total, 1835796 free Timestamp of tree: Sat, 13 Apr 2013 06:45:01 +0000 ld GNU ld (GNU Binutils) 2.23.1 distcc 3.1 x86_64-pc-linux-gnu [disabled] app-shells/bash: 4.2_p45 dev-java/java-config: 2.2.0 dev-lang/python: 2.7.3-r3, 3.2.3-r2 dev-util/cmake: 2.8.10.2-r1 dev-util/pkgconfig: 0.28 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.11.8 sys-apps/sandbox: 2.6-r1 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.11.6, 1.13.1 sys-devel/binutils: 2.23.1 sys-devel/gcc: 4.7.2-r1 sys-devel/gcc-config: 1.8 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.8 (virtual/os-headers) sys-libs/glibc: 2.17 Repositories: gentoo crossdev wthrowe java-overlay Installed sets: @system ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="@FREE" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--ask --quiet-build=n" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs clean-logs compress-build-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-orphans userfetch" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://gentoo.netnitco.net http://mirror.mcs.anl.gov/pub/gentoo/ http://mirror.csclub.uwaterloo.ca/gentoo-distfiles/ http://mirror.datapipe.net/gentoo ftp://mirror.datapipe.net/gentoo" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/crossdev /var/lib/layman/wthrowe /var/lib/layman/java-overlay" SYNC="rsync://rsync.namerica.gentoo.org/gentoo-portage" USE="X acl acpi alsa amd64 berkdb bindist bzip2 cairo caps cdr cli cracklib crypt cxx dbus dri dvd dvdr emacs fortran gd gdbm gimp gpm gtk iconv jpeg latex mmx modules mudflap multilib ncurses nptl opengl openmp pam pcre png readline session smp sse sse2 ssl ssse3 system-sqlite tcpd truetype unicode xscreensaver zlib" ABI_X86="64" 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="authn_core authz_core socache_shmcb unixd 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 sheets 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" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-3" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" RUBY_TARGETS="ruby18 ruby19" SANE_BACKENDS="epson2" USERLAND="GNU" VIDEO_CARDS="radeon" 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, INSTALL_MASK, LANG, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON ================================================================= Package Settings ================================================================= app-portage/g-cpan-0.16.4-r1 was built with the following: USE="(multilib)" ABI_X86="64"
Indeed only g-cpan applies keepdir on /var/tmp at the moment. But AFAIK current version may create it by demand. So we can improve ebuild a little. I will take it. portage # ack '/var/tmp/' | ack 'dodir|keepdir' app-backup/mylvmbackup/mylvmbackup-0.14.ebuild:30: keepdir /var/tmp/${PN}/{backup,mnt} app-portage/g-cpan/g-cpan-0.16.5.ebuild:28: dodir "/var/tmp/g-cpan" app-portage/g-cpan/g-cpan-0.16.5.ebuild:29: keepdir "/var/tmp/g-cpan" app-portage/g-cpan/g-cpan-0.16.6.ebuild:33: dodir "/var/tmp/g-cpan" app-portage/g-cpan/g-cpan-0.16.6.ebuild:34: keepdir "/var/tmp/g-cpan" app-portage/g-cpan/g-cpan-9999.ebuild:36: dodir "/var/tmp/g-cpan" app-portage/g-cpan/g-cpan-9999.ebuild:37: keepdir "/var/tmp/g-cpan" app-admin/logsentry/logsentry-1.1.1-r1.ebuild:27: dodir /usr/bin /var/tmp/logcheck /etc/logcheck mail-filter/spamdyke/spamdyke-4.3.0-r1.ebuild:64: dodir /var/tmp/${PN}/graylist mail-filter/spamdyke/spamdyke-4.3.0.ebuild:60: dodir /var/tmp/${PN}/graylist sci-biology/GBrowse/GBrowse-2.48-r1.ebuild:66: dodir /var/tmp/gbrowse2
some fixes already applied https://github.com/gentoo/gentoo/pull/1364
