portage-ng --fetchonly
>>> Emerging : portage://sys-boot/grub-2.12-r12:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sys-boot/grub-2.12-r12
│ └─ file ─┤ 3.54 Kb grub-2.12-bash-completion.patch.gz
│ │ 6.37 Mb grub-2.12.tar.xz
│ download portage://sys-boot/grub-themes-gentoo-1.0-r2
│ └─ file ─┤ 5.00 Mb grub-themes-gentoo-1.0.tgz
│ download portage://sys-fs/lvm2-2.03.39
│ └─ file ─┤ 2.74 Mb LVM2.2.03.39.tgz
Total: 3 actions (3 downloads), grouped into 1 step.
14.11 Mb to be downloaded.