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

Calculating dependencies ... done!
Dependency resolution took 0.99 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/libsecp256k1-0.5.1:0/2::gentoo  USE="asm ecdh ellswift extrakeys recovery schnorr -experimental -lowmem -test -valgrind" 1917 KiB

Total: 1 package (1 new), Size of downloads: 1917 KiB