!!! resolution failed
!!! request ( ( ('repo.livefs',) EqualityMatch: =False || ( ('category',) == virtual && ('package_is_real',) EqualityMatch: =False ) ) && =virtual/rubygems-21-r1 ), mode none
!!! trying virtual/rubygems-21-r1
!!!   failed due to failed inserting: [<PackageWrapper pkg=<<class 'pkgcore.ebuild.ebuild_src.package'> cpv='virtual/rubygems-22' @0x1029709f0> wrapped='use' @0x1029ca650>]

Failures encountered:
!!! failed '( ( ('repo.livefs',) EqualityMatch: =False || ( ('category',) == virtual && ('package_is_real',) EqualityMatch: =False ) ) && =virtual/rubygems-21-r1 )'
potentials:
repo gentoo: [ ebuild src: virtual/rubygems-21-r1 ]