portage-ng / portage / sci-ml / oneDNN / 3.11.2
pmerge --pretend --verbose
[ebuild  N     ] sci-ml/oneDNN-3.11.2::gentoo USE="openmp -cblas -doc -mkl -static-libs -test" 13.1 MiB

Total: 1 package (1 new), Size of downloads: 13.1 MiB


 * Running sanity checks...
>>> sci-ml/oneDNN-3.11.2: failed pkg_pretend
 /Volumes/Disk 1/gentoo-prefix/usr/lib/pkgcore/lib/pkgcore/ebd/.generated/libs/8/pkg_pretend: line 144: [[: invalid regular expression `': empty (sub)expression
  * ERROR: sci-ml/oneDNN-3.11.2:: failed (pretend phase):
  *   USE flag 'openmp' not in IUSE for sci-ml/oneDNN-3.11.2
  * 
  * Call stack:
  *    isolated-functions.bash, line  333:  called pkg_pretend
  *                ebuild.bash, line 1894:  called use 'openmp'
  *                pkg_pretend, line  145:  called die
  * 
  * Working directory: '/var/tmp/portage'

!!! Sanity checks failed, exiting...

Wall time
0.721 s vs. 0.021 s for portage-ng