portage-ng / portage / dev-tex / pgf / 3.1.10-r1
pmerge --pretend --verbose
!!! resolution failed
!!! request ( ( ('repo.livefs',) EqualityMatch: =False || ( ('category',) == virtual && ('package_is_real',) EqualityMatch: =False ) ) && =dev-tex/pgf-3.1.10-r1 ), mode none
!!! trying dev-tex/pgf-3.1.10-r1
!!!   failed due to failed inserting: [<PackageWrapper pkg=<<class 'pkgcore.ebuild.ebuild_src.package'> cpv='dev-tex/pgf-3.1.11a' @0x103887a10> wrapped='use' @0x103fd6450>]

Failures encountered:
!!! failed '( ( ('repo.livefs',) EqualityMatch: =False || ( ('category',) == virtual && ('package_is_real',) EqualityMatch: =False ) ) && =dev-tex/pgf-3.1.10-r1 )'
potentials:
repo gentoo: [ ebuild src: dev-tex/pgf-3.1.10-r1 ]

Wall time
0.559 s vs. 1.585 s for portage-ng