portage-ng --merge
>>> Emerging : portage://dev-util/lttng-ust-compat-2.12.10:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-libs/userspace-rcu-0.15.6
│ └─ file ─┤ 669.98 Kb userspace-rcu-0.15.6.tar.bz2
│ download portage://dev-util/lttng-ust-compat-2.12.10
│ └─ file ─┤ 782.67 Kb lttng-ust-2.12.10.tar.bz2
└─step 2─┤ install portage://dev-libs/userspace-rcu-0.15.6
│ └─ conf ─┤ USE = "-static-libs -test -verify-sig"
│ │ SLOT = "0/8"
└─step 3─┤ run portage://dev-libs/userspace-rcu-0.15.6
└─step 4─┤ install portage://dev-util/lttng-ust-compat-2.12.10
│ └─ conf ─┤ USE = "-numa -verify-sig"
│ │ SLOT = "0/2.12"
└─step 5─┤ run portage://dev-util/lttng-ust-compat-2.12.10
Total: 6 actions (2 downloads, 2 installs, 2 runs), grouped into 5 steps.
1.42 Mb to be downloaded.