[ebuild  N     ] virtual/fortran-0-r1::gentoo USE="openmp"
[ebuild  N     ] sci-libs/openblas-0.3.34::gentoo USE="openmp -cpudetection -index64 -pthread -relapack -test" 24.2 MiB

Total: 2 packages (2 new), Size of downloads: 24.2 MiB


 * Running sanity checks...
>>> sci-libs/openblas-0.3.34: 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-libs/openblas-0.3.34:: failed (pretend phase):
  *   USE flag 'openmp' not in IUSE for sci-libs/openblas-0.3.34
  * 
  * Call stack:
  *    isolated-functions.bash, line  333:  called pkg_pretend
  *                ebuild.bash, line 1326:  called use 'openmp'
  *                pkg_pretend, line  145:  called die
  * 
  * Working directory: '/var/tmp/portage'

!!! Sanity checks failed, exiting...