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

Calculating dependencies ... done!
Dependency resolution took 1.00 s (backtrack: 0/20).

[ebuild  N     ] net-libs/mbedtls-2.28.10:0/7.14.1::gentoo  USE="threads -cmac -doc -havege -programs -static-libs -test -zlib" CPU_FLAGS_X86="sse2" 3408 KiB

Total: 1 package (1 new), Size of downloads: 3408 KiB