portage-ng / portage / app-text / mandoc / 1.14.6-r1
pmerge --pretend --verbose
[ebuild   R    ] app-text/mandoc-1.14.6-r1::gentoo USE="-cgi (-selinux) -system-man -test" 680.8 KiB

Total: 1 package (1 reinstall), Size of downloads: 680.8 KiB


 * Running sanity checks...
>>> app-text/mandoc-1.14.6-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-text/mandoc-1.14.6-r1:: failed (pretend phase):
  *   USE flag 'system-man' not in IUSE for app-text/mandoc-1.14.6-r1
  * 
  * Call stack:
  *    isolated-functions.bash, line 333:  called pkg_pretend
  *                ebuild.bash, line 772:  called use 'system-man'
  *                pkg_pretend, line 145:  called die
  * 
  * Working directory: '/var/tmp/portage'

!!! Sanity checks failed, exiting...

Wall time
0.691 s vs. 0.002 s for portage-ng