dev-lang/qu-prolog-10.7 # slot(0) no change in 474 days for unstable keywords: [ ~amd64, ~ppc, ~x86 ]
dev-lang/xsb-4.0.0 # slot(0) no change in 1000 days for unstable keywords: [ ~amd64, ~x86 ]
dev-lang/yap-7.1.0 # slot(0) no change in 706 days for unstable keyword: [ ~amd64 ]