pmerge --pretend --verbose
[ebuild N ] llvm-core/clang-common-17.0.6-r10::gentoo USE="cet -bootstrap-prefix -default-compiler-rt -default-libcxx -default-lld -hardened -llvm-libunwind -verify-sig" 121.9 MiB
Total: 1 package (1 new), Size of downloads: 121.9 MiB
* Running sanity checks...
>>> llvm-core/clang-common-17.0.6-r10: 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: llvm-core/clang-common-17.0.6-r10:: failed (pretend phase):
* USE flag 'default-compiler-rt' not in IUSE for llvm-core/clang-common-17.0.6-r10
*
* Call stack:
* isolated-functions.bash, line 333: called pkg_pretend
* ebuild.bash, line 1660: called use 'default-compiler-rt'
* pkg_pretend, line 145: called die
*
* Working directory: '/var/tmp/portage'
!!! Sanity checks failed, exiting...
- Wall time
- 0.725 s vs. 0.006 s for portage-ng