#  emerge --ask -v --emptytree @world

These are the packages that would be merged, in order:

Calculating dependencies... done!
Dependency resolution took 28.52 s (backtrack: 0/20).


emerge: there are no ebuilds built with USE flags to satisfy ">=dev-lang/perl-5.38.2-r3[perl_features_debug=,perl_features_ithreads=,perl_features_quadmath=]".
!!! One of the following packages is required to complete your request:
- dev-lang/perl-5.38.2-r3::gentoo (Change USE: -perl_features_ithreads)
- dev-perl/Locale-gettext-1.70.0-r1::gentoo (Change USE: +perl_features_ithreads)
(dependency required by "dev-perl/Locale-gettext-1.70.0-r1::gentoo" [ebuild])
(dependency required by "sys-apps/help2man-1.49.3::gentoo[nls]" [ebuild])
(dependency required by "dev-build/automake-1.16.5-r2::gentoo" [ebuild])
(dependency required by "dev-lang/python-3.11.9-r1::gentoo" [ebuild])
(dependency required by "dev-build/meson-format-array-0::gentoo[python_targets_python3_11]" [ebuild])
(dependency required by "x11-base/xorg-proto-2024.1::gentoo" [ebuild])
(dependency required by "x11-wm/twm-1.0.12::gentoo" [ebuild])
(dependency required by "@selected" [set])
(dependency required by "@world" [argument])