portage-ng / portage / sci-libs / lis / 1.6.5-r1
emerge -vp

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

Calculating dependencies ... done!
Dependency resolution took 1.04 s (backtrack: 0/20).

[ebuild  N     ] virtual/fortran-0-r1::gentoo  USE="openmp" 0 KiB
[ebuild  N     ] sci-libs/lis-1.6.5-r1::gentoo  USE="openmp -doc -fortran -mpi -quad -saamg -static-libs" CPU_FLAGS_X86="fma3 sse2 -fma4" 3057 KiB

Total: 2 packages (2 new), Size of downloads: 3057 KiB

Wall time
2.007 s vs. 0.029 s for portage-ng