pmerge --pretend --verbose
[ebuild U ] app-arch/tar-1.35-r1::gentoo [1.35::gentoo] USE="acl nls xattr -minimal (-selinux) -test% -verify-sig" 2.2 MiB
Total: 1 package (1 upgrade), Size of downloads: 2.2 MiB
* Running sanity checks...
>>> app-arch/tar-1.35-r1: 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: app-arch/tar-1.35-r1:: failed (pretend phase):
* USE flag 'test' not in IUSE for app-arch/tar-1.35-r1
*
* Call stack:
* isolated-functions.bash, line 333: called pkg_pretend
* ebuild.bash, line 1128: called check_space
* ebuild.bash, line 953: called use 'test'
* pkg_pretend, line 145: called die
*
* Working directory: '/var/tmp/portage'
!!! Sanity checks failed, exiting...
- Wall time
- 0.705 s vs. 0.006 s for portage-ng