portage-ng / portage / virtual / fortran / 0-r1
pmerge --pretend --verbose
[ebuild  N     ] virtual/fortran-0-r1::gentoo USE="openmp"

Total: 1 package (1 new)


 * Running sanity checks...

 * resolver plan required 3 ops (0.00 seconds)

Wall time
0.425 s vs. 0.015 s for portage-ng