[ebuild     U  ] dev-lang/perl-5.44.0:0/5.44::gentoo [5.42.0-r1:0/5.42::gentoo] USE="gdbm -berkdb -doc -minimal" PERL_FEATURES="ithreads (-debug) -quadmath" 14.4 MiB
[ebuild     U  ] virtual/perl-File-Spec-3.950.0::gentoo [3.940.0::gentoo]

Total: 2 packages (2 upgrades), Size of downloads: 14.4 MiB


 * Running sanity checks...
>>> dev-lang/perl-5.44.0: 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: dev-lang/perl-5.44.0:: failed (pretend phase):
  *   USE flag 'perl_features_ithreads' not in IUSE for dev-lang/perl-5.44.0
  * 
  * Call stack:
  *    isolated-functions.bash, line  333:  called pkg_pretend
  *                ebuild.bash, line 1834:  called use 'perl_features_ithreads'
  *                pkg_pretend, line  145:  called die
  * 
  * Working directory: '/var/tmp/portage'

!!! Sanity checks failed, exiting...