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

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

[ebuild  N     ] sci-libs/gklib-5.1.1_p20230327-r1::gentoo  182 KiB
[ebuild  N     ] sci-libs/metis-5.2.1-r2::gentoo  USE="openmp -double-precision -examples -int64" 4725 KiB

Total: 2 packages (2 new), Size of downloads: 4907 KiB