portage-ng --merge
>>> Emerging : portage://sys-apps/systemd-utils-255.18:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ useflag portage://sys-apps/systemd-utils-255.18 (python_single_target_python3_13)
└─step 2─┤ download portage://sys-apps/systemd-utils-255.18
│ └─ file ─┤ 14.55 Mb systemd-stable-255.18.tar.gz
└─step 3─┤ downgrade portage://sys-apps/systemd-utils-255.18 (USE modified)
│ └─ conf ─┤ USE = "acl kmod tmpfiles udev -boot -kernel-install -secureboot -sysusers -test -ukify"
│ │ PYTHON_SINGLE_TARGET = "-python3_12 python3_13"
└─step 4─┤ run portage://sys-apps/systemd-utils-255.18
Total: 4 actions (1 useflag, 1 download, 1 downgrade, 1 run), grouped into 4 steps.
14.55 Mb to be downloaded.
>>> Assumptions taken during proving & planning:
USE flag change (1 package):
Add to /etc/portage/package.use:
sys-apps/systemd-utils python_single_target_python3_13