Hello I added hsl use flag in package.use but it is not taken into account. When I do equery uses ipopt, no hsl flag : * Found these USE flags for sci-libs/ipopt-3.12.12: U I - - doc : Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally - - examples : Install examples, usually source code - - lapack : Add support for the virtual/lapack numerical library - - mpi : Add MPI (Message Passing Interface) layer to the apps that support it + + mumps : Enable sci-libs/mumps support - - static-libs : Build static versions of dynamic libraries as well - - test : Enable dependencies and/or preparations necessary to run tests (usually controlled by FEATURES=test but can be toggled independently) When I go look in /var/db/pkg/sci-libs/ipopt-3.12.12 hsl exists and is detected but not kept for USE PKGUSE hsl mumps IUSE doc examples hsl lapack mpi mumps static-libs test USE abi_x86_64 amd64 elibc_glibc kernel_linux mumps userland_GNU I don't know if it is a bug of ipopt ebuild or portage. Best regards, Sylvain Portage 2.3.99 (python 3.6.10-final-0, default/linux/amd64/17.1/desktop/gnome/systemd, gcc-9.2.0, glibc-2.29-r7, 5.4.28-gentoo x86_64) ================================================================= System uname: Linux-5.4.28-gentoo-x86_64-Intel-R-_Core-TM-_i5-7300U_CPU_@_2.60GHz-with-gentoo-2.6 KiB Mem: 16012084 total, 7478260 free KiB Swap: 16601084 total, 16601084 free Timestamp of repository gentoo: Mon, 04 May 2020 21:45:01 +0000 Head commit of repository gentoo: 9dbc6d548f4887b50748825335c026949502e375 Timestamp of repository poly-c: Mon, 04 May 2020 10:58:43 +0000 sh bash 4.4_p23-r1 ld GNU ld (Gentoo 2.32 p2) 2.32.0 app-shells/bash: 4.4_p23-r1::gentoo dev-java/java-config: 2.2.0-r4::gentoo dev-lang/perl: 5.30.1::gentoo dev-lang/python: 2.7.17-r2::gentoo, 3.6.10-r1::gentoo, 3.7.7-r1::gentoo dev-util/cmake: 3.16.5::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/sandbox: 2.13::gentoo sys-devel/autoconf: 2.13-r1::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.13.4-r2::gentoo, 1.16.1-r1::gentoo sys-devel/binutils: 2.32-r1::gentoo, 2.33.1-r1::gentoo sys-devel/gcc: 9.2.0-r2::gentoo sys-devel/gcc-config: 2.2.1::gentoo sys-devel/libtool: 2.4.6-r6::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 5.4::gentoo (virtual/os-headers) sys-libs/glibc: 2.29-r7::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.fr.gentoo.org/gentoo-portage priority: -1000 sync-rsync-extra-opts: sync-rsync-verify-metamanifest: yes sync-rsync-verify-max-age: 24 sync-rsync-verify-jobs: 1 localrepo location: /var/db/repos/localrepo masters: gentoo x-portage location: /usr/local/portage masters: gentoo priority: 0 crossdev location: /usr/local/portage-crossdev masters: gentoo priority: 10 4nykey location: /var/lib/layman/4nykey sync-type: laymansync sync-uri: https://github.com/4nykey/4nykey.git masters: gentoo priority: 50 chaoslab location: /var/lib/layman/chaoslab sync-type: laymansync sync-uri: https://gitlab.com/chaoslab/chaoslab-overlay.git masters: gentoo priority: 50 gnome location: /var/lib/layman/gnome sync-type: laymansync sync-uri: https://anongit.gentoo.org/git/proj/gnome.git masters: gentoo priority: 50 jorgicio location: /var/lib/layman/jorgicio sync-type: laymansync sync-uri: https://github.com/jorgicio/jorgicio-gentoo.git masters: gentoo priority: 50 laurentb location: /var/lib/layman/laurentb sync-type: laymansync sync-uri: https://github.com/laurentb/gentoo-overlay.git masters: gentoo priority: 50 mva location: /var/lib/layman/mva sync-type: laymansync sync-uri: https://github.com/msva/mva-overlay masters: gentoo priority: 50 np-hardass-overlay location: /var/lib/layman/np-hardass-overlay sync-type: laymansync sync-uri: https://github.com/np-hardass/np-hardass-overlay.git masters: gentoo priority: 50 poly-c location: /var/lib/layman/poly-c sync-type: laymansync sync-uri: rsync://rsync.gentoofan.org/poly-c masters: gentoo priority: 50 raiagent location: /var/lib/layman/raiagent sync-type: laymansync sync-uri: https://github.com/leycec/raiagent masters: gentoo priority: 50 reagentoo location: /var/lib/layman/reagentoo sync-type: laymansync sync-uri: https://github.com/reagentoo/gentoo-overlay.git masters: gentoo priority: 50 robert7k location: /var/lib/layman/robert7k sync-type: laymansync sync-uri: https://github.com/robert7k/gentoo-overlay.git masters: gentoo priority: 50 waebbl location: /var/lib/layman/waebbl sync-type: laymansync sync-uri: https://github.com/waebbl/waebbl-gentoo.git masters: gentoo raiagent priority: 50 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="@FREE no-source-code freedist" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php7.3/ext-active/ /etc/php/apache2-php7.4/ext-active/ /etc/php/cgi-php7.3/ext-active/ /etc/php/cgi-php7.4/ext-active/ /etc/php/cli-php7.3/ext-active/ /etc/php/cli-php7.4/ext-active/ /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" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms split-elog strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="ftp://ftp.free.fr/mirrors/ftp.gentoo.org/ http://gentoo.modulix.net/gentoo/ http://gentoo.mirrors.ovh.net/gentoo-distfiles/ ftp://mirrors.soeasyto.com/distfiles.gentoo.org/ http://mirrors.soeasyto.com/distfiles.gentoo.org/" LANG="fr_FR.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j3 -l2" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" USE="X a52 aac acl acpi alsa amd64 berkdb bluetooth branding bzip2 cairo cdda cdr cli colord crypt cups dbus dri dts dvd dvdr eds emboss encode evo exif flac fortran gdbm gif gnome gnome-keyring gnome-online-accounts gpm gstreamer gtk guile iconv icu introspection ipv6 jpeg lcms ldap libnotify libsecret libtirpc mad mng mp3 mp4 mpeg multilib nautilus ncurses networkmanager nls nptl ogg opengl openmp pam pango pcre pdf php png policykit ppds pulseaudio qt5 readline sdl seccomp spell split-usr ssl startup-notification svg systemd tcpd tiff tracker truetype udev udisks unicode upower usb vorbis wayland wxwidgets x264 xattr xcb xml xv xvid zlib" ABI_X86="64" ADA_TARGET="gnat_2018" 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" 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="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 fma3 mmx mmxext pclmul popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="emu efi-32 efi-64 pc" 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" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python3_6" QEMU_SOFTMMU_TARGETS="arm x86_64" QEMU_USER_TARGETS="x86_64" RUBY_TARGETS="ruby24 ruby25" SANE_BACKENDS="hp plustek" USERLAND="GNU" VIDEO_CARDS="intel i965" 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: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS