pmerge --pretend --verbose
[ebuild N ] sci-libs/htslib-1.23.1:0/3::gentoo USE="bzip2 lzma -curl" 4.8 MiB
[ebuild N ] sci-biology/STAR-2.7.10a::gentoo 11.7 MiB
Total: 2 packages (2 new), Size of downloads: 16.5 MiB
* Running sanity checks...
>>> sci-biology/STAR-2.7.10a: failed pkg_pretend
* Your current compiler does not support OpenMP!
* OpenMP support in llvm-core/clang is provided by llvm-runtimes/openmp.
* ERROR: sci-biology/STAR-2.7.10a:: failed (pretend phase):
* Active compiler does not have required support for OpenMP
*
* Call stack:
* isolated-functions.bash, line 333: called pkg_pretend
* ebuild.bash, line 765: called tc-check-openmp
* ebuild.bash, line 835: called die
*
* Working directory: '/var/tmp/portage'
!!! Sanity checks failed, exiting...
- Wall time
- 0.845 s vs. 0.017 s for portage-ng