While running `emerge -avuND @world` on a ppc64, PYTHON_SINGLE_TARGET changed from python3_10 to python3_11. There was one package after sys-apps/portage in the upgrade run, which was app-admin/perl-cleaner. This failed to merge because of FEATURES=unmerge-backup: >>> Emerging (218 of 218) app-admin/perl-cleaner-2.31::gentoo * perl-cleaner-2.31.tar.bz2 BLAKE2B SHA512 size ;-) ... [ ok ] >>> Unpacking source... >>> Unpacking perl-cleaner-2.31.tar.bz2 to /var/tmp/portage/app-admin/perl-cleaner-2.31/work >>> Source unpacked in /var/tmp/portage/app-admin/perl-cleaner-2.31/work >>> Preparing source in /var/tmp/portage/app-admin/perl-cleaner-2.31/work/perl-cleaner-2.31 ... * Adjusting to prefix / * perl-cleaner ... [ ok ] >>> Source prepared. >>> Configuring source in /var/tmp/portage/app-admin/perl-cleaner-2.31/work/perl-cleaner-2.31 ... >>> Source configured. >>> Compiling source in /var/tmp/portage/app-admin/perl-cleaner-2.31/work/perl-cleaner-2.31 ... >>> Source compiled. >>> Test phase [not enabled]: app-admin/perl-cleaner-2.31 >>> Install app-admin/perl-cleaner-2.31 into /var/tmp/portage/app-admin/perl-cleaner-2.31/image >>> Completed installing app-admin/perl-cleaner-2.31 into /var/tmp/portage/app-admin/perl-cleaner-2.31/image * Final size of build directory: 32 KiB * Final size of installed tree: 48 KiB >>> Installing (218 of 218) app-admin/perl-cleaner-2.31::gentoo * checking 2 files for package collisions /usr/lib/python-exec/python3.10/quickpkg: this Python implementation (python3.10) is not supported by the script. !!! FAILED preinst: quickpkg: 127 emerge --info: Portage 3.0.51 (python 3.11.5-final-0, default/linux/ppc64/17.0/musl/hardened, gcc-12, musl-1.2.3-r7, 5.15.98-mc4-easy ppc64) ================================================================= System uname: Linux-5.15.98-mc4-easy-ppc64-POWER9,_altivec_supported-with-libc KiB Mem: 164876832 total, 93084088 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Tue, 17 Oct 2023 03:30:01 +0000 Head commit of repository gentoo: f92e6f74b73ba36b697750f7afaaab063ca023c1 sh bash 5.1_p16-r6 ld GNU ld (Gentoo 2.40 p5) 2.40.0 app-misc/pax-utils: 1.3.7::gentoo app-shells/bash: 5.1_p16-r6::gentoo dev-lang/perl: 5.38.0-r1::gentoo dev-lang/python: 3.11.5::gentoo dev-util/cmake: 3.26.5-r2::gentoo dev-util/meson: 1.2.1-r1::gentoo sys-apps/baselayout: 2.14::gentoo sys-apps/openrc: 0.48::gentoo sys-apps/sandbox: 2.38::gentoo sys-devel/autoconf: 2.71-r6::gentoo sys-devel/automake: 1.16.5::gentoo sys-devel/binutils: 2.40-r5::gentoo sys-devel/binutils-config: 5.5::gentoo sys-devel/gcc: 12.2.1_p20230121-r1::gentoo, 13.2.1_p20230826::gentoo sys-devel/gcc-config: 2.11::gentoo sys-devel/libtool: 2.4.7-r1::gentoo sys-devel/make: 4.4.1-r1::gentoo sys-kernel/linux-headers: 6.1::gentoo (virtual/os-headers) sys-libs/musl: 1.2.3-r7::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 volatile: False sync-rsync-verify-jobs: 1 sync-rsync-extra-opts: sync-rsync-verify-max-age: 24 sync-rsync-verify-metamanifest: yes ACCEPT_KEYWORDS="ppc64" ACCEPT_LICENSE="@FREE" CBUILD="powerpc64-gentoo-linux-musl" CFLAGS="-O2 -pipe -mcpu=power9" CHOST="powerpc64-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/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -pipe -mcpu=power9" DISTDIR="/var/cache/distfiles" ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GDK_PIXBUF_MODULE_FILE GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR XDG_STATE_HOME" FCFLAGS="-O2 -pipe -mcpu=power9" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live candy config-protect-if-modified distlocks downgrade-backup ebuild-locks fixlafiles ipc-sandbox merge-sync network-sandbox news noinfo parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms splitdebug strict unknown-features-warn unmerge-backup unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe -mcpu=power9" GENTOO_MIRRORS="http://distfiles.gentoo.org" INSTALL_MASK="charset.alias /usr/share/locale/locale.alias" LANG="en_GB.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LEX="flex" MAKEOPTS="-j64" 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" SHELL="/bin/zsh" USE="acl big-endian bzip2 cli crypt dri fortran hardened ibm iconv ipv6 libedit ncurses nls nptl openmp pam pcre pic pie ppc64 seccomp split-usr ssl ssp test-rust unicode xattr xtpax zlib" ADA_TARGET="gnat_2021" 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" ELIBC="musl" 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" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php8-1" POSTGRES_TARGETS="postgres15" PYTHON_SINGLE_TARGET="python3_11" PYTHON_TARGETS="python3_11" RUBY_TARGETS="ruby31" VIDEO_CARDS="fbdev mga r128 radeon dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq proto steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EMERGE_DEFAULT_OPTS, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, LC_ALL, LD, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RANLIB, READELF, RUSTFLAGS, SIZE, STRINGS, STRIP, YACC, YFLAGS
sys-apps/portage doesn't use PYTHON_SINGLE_TARGET. This is likely caused by a change in PYTHON_TARGETS.
