portage-ng --merge
>>> Emerging : portage://media-libs/vulkan-loader-1.4.363.0:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-util/vulkan-headers-1.4.363.0
│ └─ file ─┤ 3.26 Mb vulkan-headers-1.4.363.0.tar.gz
│ download portage://media-libs/vulkan-loader-1.4.363.0
│ └─ file ─┤ 1.78 Mb vulkan-loader-1.4.363.0.tar.gz
└─step 2─┤ install portage://dev-util/vulkan-headers-1.4.363.0
│ └─ conf ─┤ USE = "-test"
└─step 3─┤ install portage://media-libs/vulkan-loader-1.4.363.0
│ └─ conf ─┤ USE = "X* -wayland"
└─step 4─┤ run portage://media-libs/vulkan-loader-1.4.363.0
Total: 5 actions (2 downloads, 2 installs, 1 run), grouped into 4 steps.
5.04 Mb to be downloaded.