pmerge --pretend --verbose
[ebuild N ] dev-python/uv-0.11.25::gentoo USE="-debug -test" 47.0 MiB
Total: 1 package (1 new), Size of downloads: 47.0 MiB
* Running sanity checks...
>>> dev-python/uv-0.11.25: 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-python/uv-0.11.25:: failed (pretend phase):
* USE flag 'debug' not in IUSE for dev-python/uv-0.11.25
*
* Call stack:
* isolated-functions.bash, line 333: called pkg_pretend
* ebuild.bash, line 1960: called check_space
* ebuild.bash, line 1681: called use 'debug'
* pkg_pretend, line 145: called die
*
* Working directory: '/var/tmp/portage'
!!! Sanity checks failed, exiting...
- Wall time
- 0.747 s vs. 0.008 s for portage-ng