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/kpathsea-6.4.0_p20240311-r1:0/6.4.0::gentoo  USE="-doc -source -static-libs" 68532 KiB
[ebuild  N     ] dev-tex/bibtexu-3.72_p20230311::gentoo  USE="-doc -source" 66768 KiB

Total: 2 packages (2 new), Size of downloads: 135300 KiB