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

Calculating dependencies ... done!
Dependency resolution took 1.02 s (backtrack: 0/20).

[ebuild  N     ] app-benchmarks/httperf-0.9.1_p20201206-r1::gentoo  USE="-debug -idleconn" 106 KiB

Total: 1 package (1 new), Size of downloads: 106 KiB