portage-ng / portage / llvm-runtimes / openmp-spirv64-intel / 24.0.0.9999
pmerge --pretend --verbose
pmerge: error: no matching ebuilds: '=llvm-runtimes/openmp-spirv64-intel-24.0.0.9999'

Wall time
0.408 s vs. 1.924 s for portage-ng