Allow cabal-install >= 1.22.8 if ghcjs new enough
Allow cabal-install >= 1.22.8 if ghcjs new enough

See https://github.com/ghcjs/ghcjs/issues/470

Blaisorblade/stack,sjakobi/stack,deech/stack,mrkkrp/stack,martin-kolinek/stack,anton-dessiatov/stack,anton-dessiatov/stack,phadej/stack,MichielDerhaeg/stack,AndreasPK/stack,phadej/stack,MichielDerhaeg/stack,mrkkrp/stack,AndreasPK/stack,AndrewRademacher/stack,deech/stack,Fuuzetsu/stack,AndrewRademacher/stack,juhp/stack,Fuuzetsu/stack,martin-kolinek/stack,sjakobi/stack,juhp/stack,Heather/stack,Heather/stack,Blaisorblade/stack