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

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/Term-ReadLine-Gnu-1.470.0::gentoo  USE="-examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 213 KiB
[ebuild  N     ] app-shells/psh-1.8.1-r4::gentoo  USE="readline -examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 118 KiB

Total: 2 packages (2 new), Size of downloads: 331 KiB