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

Calculating dependencies ... done!
Dependency resolution took 0.97 s (backtrack: 0/20).

[ebuild  N     ] dev-perl/Business-ISBN-Data-20251024.1.0::gentoo  USE="-test" PERL_FEATURES="ithreads (-debug) -quadmath" 37 KiB
[ebuild  N     ] dev-perl/Business-ISBN-3.13.0::gentoo  USE="-barcode -examples -test" PERL_FEATURES="ithreads (-debug) -quadmath" 356 KiB

Total: 2 packages (2 new), Size of downloads: 393 KiB