Emerging sys-apps/groff-1.22.4 fails due to file collision on /usr/lib/charset.alias. This file is owned by sys-apps/findutils-4.6.0-r1. This issue occurs with sys-apps/groff-1.22.4 from the gentoo repo and also the one from the musl overlay. Reproducible: Always Portage 2.3.71 (python 3.6.9-final-0, default/linux/arm64/17.0/musl, gcc-9.2.0, musl-1.1.23, 4.19.65-v8+ aarch64) ================================================================= System uname: Linux-4.19.65-v8+-aarch64-with-gentoo-2.6 KiB Mem: 3949768 total, 1884872 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Thu, 15 Aug 2019 18:46:24 +0000 Head commit of repository gentoo: 6a29209c3f11139b8ad3a34b23d412be3d89ee4f Head commit of repository musl: 72f1b5f8ad45bcc86fab7ca18d6f49a4aea4ee26 sh dash 0.5.10.2 ld GNU ld (Gentoo 2.32 p2) 2.32.0 distcc 3.3.3 aarch64-gentoo-linux-musl [enabled] app-shells/bash: 5.0_p9::gentoo dev-lang/perl: 5.30.0::gentoo dev-lang/python: 2.7.16::gentoo, 3.6.9::gentoo dev-util/cmake: 3.15.2::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/openrc: 0.41.2::gentoo sys-apps/sandbox: 2.18::gentoo sys-devel/autoconf: 2.69-r4::gentoo sys-devel/automake: 1.11.6-r3::gentoo, 1.16.1-r1::gentoo sys-devel/binutils: 2.32-r1::gentoo sys-devel/gcc: 9.2.0::gentoo sys-devel/gcc-config: 2.0::gentoo sys-devel/libtool: 2.4.6-r5::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 5.1::musl (virtual/os-headers) sys-libs/musl: 1.1.23::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: git sync-uri: https://github.com/gentoo-mirror/gentoo priority: -1000 musl location: /var/db/repos/musl sync-type: git sync-uri: https://github.com/gentoo/musl.git masters: gentoo priority: 10 localrepo location: /var/db/repos/localrepo masters: gentoo priority: 15 ACCEPT_KEYWORDS="arm64 ~arm64" ACCEPT_LICENSE="@FREE" CBUILD="aarch64-gentoo-linux-musl" CFLAGS="-march=armv8-a+crc -mtune=cortex-a72 -O2 -pipe -fomit-frame-pointer -ftree-vectorize" CHOST="aarch64-gentoo-linux-musl" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=armv8-a+crc -mtune=cortex-a72 -O2 -pipe -fomit-frame-pointer -ftree-vectorize" DISTDIR="/var/cache/distfiles" EMERGE_DEFAULT_OPTS="--jobs=4 --load-average=4 --ask --tree --quiet-build y" 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="-march=armv8-a+crc -mtune=cortex-a72 -O2 -pipe -fomit-frame-pointer -ftree-vectorize" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs buildpkg cgroup collision-protect config-protect-if-modified distcc distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync network-sandbox news notitles parallel-fetch parallel-install pid-sandbox preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-march=armv8-a+crc -mtune=cortex-a72 -O2 -pipe -fomit-frame-pointer -ftree-vectorize" GENTOO_MIRRORS="http://distfiles.gentoo.org" INSTALL_MASK="/usr/share/fish/*" LDFLAGS="-march=armv8-a+crc -mtune=cortex-a72 -O2 -pipe -fomit-frame-pointer -ftree-vectorize" MAKEOPTS="-j12 -l4" PKGDIR="/var/cache/binpkgs" 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="acl arm64 bzip2 cli crypt cxx dri eselect-ldso fortran iconv ipv6 libtirpc ncurses nptl openmp pam pcre readline seccomp split-usr ssl tcpd threads unicode xattr zlib zsh-completion" 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_ARM="edsp neon thumb thumb2 v4 v5 v6 v7 v8 vfp vfp-d32 vfpv3 vfpv4" ELIBC="musl" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="libinput keyboard mouse" KERNEL="linux" L10N="en" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" NETBEANS_MODULES="apisupport cnd groovy gsf harness ide identity j2ee java mobility nb php profiler soa visualweb webcommon websvccommon xml" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby24" USERLAND="GNU" VIDEO_CARDS="fbdev dummy v4l" 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, LANG, LC_ALL, LINGUAS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
You have overridden the profile which already has an INSTALL_MASK for charset.alias, you should have set INSTALL_MASK="${INSTALL_MASK} /usr/share/fish/*" Please adjust your make.conf file to reflect the change and retest.